author: NORVELL, Justice. GREENHILL, Justice.

text:
    RAILROAD COMMISSION of Texas and Russell Maguire, Appellants, v. RIO GRANDE VALLEY GAS COMPANY, Appellee.
    No. A-11029.
    Supreme Court of Texas.
    June 22, 1966.
    Rehearing Denied July 27, 1966.
    Dissenting Opinion Filed July 27, 1966.

      Dee J. Kelly, Fort Worth, Linward Shivers, Asst. Atty. Gen., Austin, for appellants.
    Black & Stay ton, Austin, for appellee.
   NORVELL, Justice.

The question involved upon this appeal is whether a Railroad Commission ratable take order dated March 6, 1965 relating to the West Port Isabel Gas Field, Cameron County, Texas, is authorized by the Texas Common Purchaser Act, Article 6049a, 1. c. §§ 8 and 8a, Vernon’s Ann.Tex.Stats. The order required Rio Grande Valley Gas Company to “extend its gathering line to the Russell Maguire Well No. 1, Yturria Lease, and to connect said well and to take gas therefrom without unjust or unreasonable discrimination in favor of its own production or that of any other producer in said field area and without unjust or unreasonable discrimination as between the separate reservoirs making up West Port Isabel Field area so that the said Russell Maguire or any other party owning an interest in the Yturria Lease will be afforded an opportunity to produce and sell his ratable share of the total market outlet for all of said reservoirs making up said field area”.

Rio Grande Valley Gas Company attacked the order of the Commission in the District Court of Travis County, Texas, and by decree dated August 12, 1965, that Court declared that such order was invalid and permanently enjoined the Railroad Commission from enforcing or attempting to enforce the same. The Railroad Commission joined by Russell Maguire prosecuted a direct appeal to this Court.

We reverse the judgment of the District Court and vacate the injunction decree.

The central problem in this case encompasses three questions:

1. Has the Railroad Commission the authority to compel a common purchaser pipeline company to purchase gas produced from a reservoir from which such company is taking no gas? The “West Port Isabel Field” is a multiple reservoir area and Rio Grande is taking from some reservoirs and not from others.

2. Under the circumstances disclosed by the record, does the Common Purchaser Act empower the Commission to order Rio Grande to extend its facilities to connect with the Maguire well?

3. Is the Commission’s order fatally defective because it does not purport to fix the terms upon which Rio Grande is to purchase gas from Maguire No. 1 well in view of the fact that appellant and appellee have not agreed to any terms ?

We will discuss these questions in the order stated. However, in order to make clear our holding with reference thereto it is necessary to state in some detail the physical facts relating to the West Port Isabel Field and the drilling operations had therein. Such field or area embraces seven vertically separated gas reservoirs. Three producing wells have been drilled in the field. The first well was drilled by Texas Gulf Producing Company and is a single completion in the 7300' reservoir. The second well was drilled by Rio Grande and is a quadruple completion in the 7300', 7500', 8350' and 8850' reservoirs. It was originally completed in 1963 as a triple completion in the 6850', 8350' and 8850' reservoirs but in 1964, after the 6850' reservoir had been depleted, the present quadruple completion was made. The third well was drilled by appellant, Russell Ma-guire, and was dually completed in the 7700' and 8100' reservoirs. The acreage of the leaseholds involved is as follows: Texas Gulf: 80 acres; Rio Grande: 845.38 acres; and Maguire: 7189.25 acres.

Rio Grande, in addition to being a producer of gas, owns and operates a wholly intrastate pipeline system in the field area. It purchases, transports and sells gas for domestic use in the Lower Rio Grande Valley of Texas and is designated as a public gas utility in its articles of incorporation.

There are three different sizes of pipeline installations operated by Rio Grande in the field area: (1) a six inch transmission line running east from the City of Port Isabel through the town of Los Fresnos; (2) an eight inch line which runs from the north through a measuring station located on State Highway 100 and continues generally southwest to a point northeast of the Port of Brownsville and thence to the City of Brownsville; and (3) a pipeline approximately 6447 feet long made up of three and four inch diameter pipes running from Rio Grande’s well to the Highway 100 Measuring Station. The subjoined plat taken from a brief on file herein shows the location of the Highway 100 Station and the existing three and four inch line running from the Rio Grande well to the measuring station. The double dash line indicates the extension to the Maguire well ordered by the Commission. The single dash line indicates the course a connecting line would take between the Maguire well and the station by going around the segment of land referred to as the Garcia tract over which Maguire has been unable to obtain a right of way.

On July 30, 1957, Rio Grande and Texas Gulf Producing Company entered into a gas purchase contract. By this contract, Texas Gulf dedicated the gas reserves beneath its Garcia lease in the West Port Isabel Field, together with large gas reserves in a separate field known as the Vista del Mar. The contract fixes the point of delivery for Texas Gulf’s gas at Rio Grande’s Highway 100 Measuring Station. As required by the gas purchase contract, Texas Gulf at its own expense laid a gathering line from its well to the Highway 100 Station. (This pipeline is not shown on the above plat.) At the time Texas Gulf laid its gathering line, Rio Grande’s three and four inch line, 6647 feet in length, had not been constructed but was thereafter laid to the Rio Grande well. Although Rio Grande refers to this latter line as a “gathering” line, it appears that in its reports to the Railroad Commission’s Gas Utility Division, Rio Grande showed this pipeline to be a part of the facilities included in its rate base. The cost thereof is consequently reflected in the rate Rio Grande charges its customers.

Under the Texas Gulf contract, Rio Grande obligated itself to pay 13.9 cents per mcf for all gas taken from the Texas Gulf well from and after May 1, 1965. The 13.9 cents per mcf is also used in calculating the royalty payments made by Rio' Grande out of the production taken from its well.

On October 1, 1964, Rio Grande and Sinclair Oil & Refining Company (Texas Gulf’s successor) executed an agreement whereby Rio Grande acquired 85% of the production and all field equipment formerly owned by Texas Gulf in the West Port Isabel Field. Conversely, Sinclair acquired a 15% interest in Rio Grande’s equipment and production in the field. The Maguire well remained the only one in the field without a connection to the pipeline controlled by Rio Grande and Sinclair, both of which are gas producers. It further appears that except for the Rio Grande pipeline, there was no gas market available within seventeen miles of the West Port Isabel Field.

The Railroad Commission found that ap-pellee, Rio Grande Valley Gas Company, is a common purchaser and public gas utility and that a reasonable extension of its facilities was necessary to prevent unjust and unreasonable discrimination. The operative part of the order entered by the Railroad Commission has been heretofore set out.

Article 6049a, § 8 (made applicable to gas by Article 6049a, § 8a) provides in part that a common purchaser of gas, “shall purchase gas offered to it for purchase without discrimination in favor of one producer or person as against another in the same field, and without unjust or unreasonable discrimination as between fields in this state; taking into consideration the production and age of wells in respective fields and all other proper factors. * *

The word “field” as used in the oil industry has a meaning which is usually determined from the context in which it is used. It may refer to a certain geographical area from which oil is produced or it may be restricted to a particular reservoir. If the term “field” be construed as embracing the seven reservoirs lying above or below each other, then Rio Grande is producing from the West Port Isabel Field with well completions at the 7300', 7500', 8350' and 885(y levels. On the other hand, if the word “field” as used in the statutory phrase “without discrimination in favor of one producer or person as against another in the same field” be restricted to reservoirs, then Rio Grande is not producing from the same field as Maguire whose well was completed at the 7700' and 8100' levels.

It is conceded by the appellants that the Commission for proration purposes is required to classify a common reservoir as a separate field. See, Benz-Stoddard v. Aluminum Company of America, 368 S.W.2d 94 (Tex.Sup.l963).

However, we are here dealing with discrimination and monopolistic practices. The emergency clause of the original Common Purchaser Act (relating to oil) recited that: “The fact * * * that no law of this State regulates the business of purchasing crude petroleum, and that there is existing discrimination and virtual monopoly in such business, constitutes an emergency and imperative public necessity * * *.” Acts 1930, 41st Leg., 5th C.S., ch. 36, p. 171.

Likewise, the emergency clause of the Act which contained the gas amendments to the Common Purchaser Act refers to discrimination in the following terms: “The fact that (the 1930 Act) * * * did not include the common purchasing of natural gas and that there is existing discrimination in the purchase of oil and gas, creating chaos in the industry, constitutes an emergency and an imperative public necessity, * * * ” Acts 1931, 42nd Leg., 1st C.S., ch. 28, p. 58.

It was shown by evidence that in 1930 and 1931 when the Common Purchaser Acts were passed, the technique of multiple completion of gas wells was unknown. It was also shown that the Railroad Commission as a matter of administrative practice and interpretation has always considered that the word “field” as used in the phrase, “shall purchase without discrimination in favor of one producer or person as against another in the same field”, referred to a geographical area containing one or more overlying common reservoirs, and the Attorney General so ruled in 1939 (Op. 0-1103).

The overall general purpose of the common purchaser legislation is abundantly clear. Advances in well drilling techniques such as the development of the multiple completion of gas wells, which may not have been foreseen by the Legislature, should not be allowed to defeat such purpose. Maguire is now producing from the 7700' and 8100' reservoirs and as found by the Commission, "the Rio Grande well has both reservoirs behind the pipe that are found in the Maguire well, but that no gas is being produced from such reservoirs”. To construe the Act as having the limited application urged by the appellee would practically destroy its effectiveness as an anti-discriminatory meaáure so far as vertically separated multiple reservoirs are concerned. A common purchaser could readily avoid the statutory imposed ratable take obligation simply by bypassing and not completing a well in any reservoir which then was producing from a completed well owned by another person or entity.

We hold that Maguire and Rio Grande are producers “in the same field” despite the circumstance that their respective wells are producing from different vertically separated reservoirs, and that accordingly, Maguire is entitled to the protection and benefits of the Common Purchaser Act. See, Railroad Commission of Texas v. Permian Basin Pipeline Company, 302 S.W.2d 238 (Tex.Civ.App.19S7, ref. n. r. e.). Gilbert I. Low, Common Purchasers of Oil and Gas, 39 Tex.L.Review 84 (1960).

We pass to the second question above stated relating to the legality of that portion of the order requiring Rio Grande to extend its pipeline facilities to connect with the Maguire well. In connection therewith, the Commission made the following fact finding which is reasonably supported by substantial evidence, viz.:

“The activities of Rio Grande Valley Gas Company establishes it as a common purchaser and public gas utility serving in the West Port Isabel Field area; that a reasonable extension of its gathering line to the Maguire Well No. 1, Yturria Lease as prayed for in the application of the said Maguire, is reasonably necessary to prevent unjust and unreasonable discrimination; that such extension is reasonable and required in the public interest; that the expense involved will not impair the ability of Rio Grande to perform its duties to the public;”

The statutory basis for this finding and the order based thereon is Article 6049a, §§ 8b and lid, which read as follows:

Section 8b: “It shall be the duty of the Railroad Commission of Texas to see that the provisions of this Act are fully complied with, and it shall have the power, after notice and hearing, to make rules, regulations and orders, defining the distance that extensions or gathering lines shall be made to all oil or gas wells; and such other rules, regulations or orders as may be necessary to carry out the provisions of this Act, and to prevent discrimination in purchases.”
Section lid: “The Railroad Commission shall make inquiry in each field concerning the connections of the various producers and when discrimination is found to be practiced by any common purchaser as defined in this Act the said Railroad Commission shall issue an order to such common purchaser to make such reasonable extensions of their lines and such reasonable connections as will prevent such discrimination.”

Rio Grande’s primary argument is based upon its assertion that each of the overlying reservoirs in the West Port Isabel Field area is to be considered as a separate field and as it is not producing from the reservoirs in which the Maguire well has been completed, it cannot be lawfully ordered to extend its lines to serve a reservoir or “field” from which it is taking no gas. For the reasons heretofore stated, we hold that this position is not well taken.

Rio Grande also contends that the extension ordered by the Commission is unauthorized because it requires a connection with the three and four inch pipeline constructed by Rio Grande to connect with the well drilled and owned by it. It is said that the purpose of this line is essentially private and that the order of the Commission requiring it to transport gas from Maguire’s well by use of this line will deprive Rio Grande of “flexibility” in operation now allowed to it by a single connection to its own well. This flexibility is said to be highly important because of an extreme variation in load factors occasioned by the usual inconsistent weather which prevails in the Lower Rio Grande Valley (served by appellee) during the winter season. It appears, however, from evidence introduced upon the trial that the existing line, 6447 feet in length, running from the Rio Grande well to the Highway 100 Station, has a carrying capacity of seventeen million cubic feet per day and that its average daily • load is approximately one-half of full capacity. The Commission could well conclude that the line would not be taxed beyond capacity by carrying the ratable take from Ma-guire’s well. Further, as has been pointed out, this particular gas line has been reported as a portion of Rio Grande’s rate structure by which the amounts charged to its customers are determined. An extension of such line could also be so reported. The statute speaks of “reasonable extensions” and “reasonable connections” in order to prevent discrimination. Article 6049a, § lid. The Common Purchaser Act vested the Railroad Commission with wide and extensive regulatory power to accomplish the objectives of the Act. Article 6049a, § 9. Further orders may become essential by reason of changing conditions in the West Port Isabel Field and the population growth of the area served by Rio Grande as a public utility. However, it cannot now be said that an order requiring an extension of Rio Grande’s lines is either illegal or unreasonable.

In contending that the order of the Railroad Commission is fatally defective, Rio Grande asserts that such order does not with sufficient certainty inform appellee as to the price it shall pay appellant for his gas or as to the quantity of gas appellee is to take from appellant’s well. The provisions of the order follow the statute. Neither price nor quantity of take are prescribed. This does not mean that such factors may not be ascertained. The Commission directed Rio Grande to connect the Maguire well with its pipeline system and “take gas therefrom without unjust or unreasonable discrimination in favor of its own production or that of any other producer in the field and without unjust or unreasonable discrimination as between the separate reservoirs making up the West Port Isabel Field area * * *

Rather extensive discussions relating to gas prices at the wellhead are contained in the briefs. Rio Grande argues that there is a substantial difference in the way gas prices are established as compared to oil prices which are usually controlled by the posted field price per barrel of oil. It is said that the price per mcf of gas is generally determined by private treaty between purchaser and seller containing numerous provisions relating to quality of gas, processing, dedicated reserves and the like. It is pointed out that in its contract with Texas Gulf, Rio Grande acquired dedicated reserves in the Vista del Mar field which is a separate field from the West Port Isabel Field, and that the connecting line between the Texas Gulf well and the Highway 100 measuring station had been laid by Texas Gulf. It is said that all these factors entered into the price agreed upon per mcf, which under the terms of the contract rose from 12.5 to 13.9 cents per mcf on May 1, 1965, eight years after the contract was signed.

There is also a record of negotiation between Rio Grande and Maguire as to price and the construction of a line connecting the Maguire well with the Rio Grande pipeline system. Rio Grande insisted that Maguire build its own connection to the Highway 100 measuring station and then offered to take only 200 mcf per day at 13 cents per mcf.

On the other hand, it appears that the price of 13.9 cents per mcf is the only price paid for gas in the West Port Isabel Field area. It is the price specified in the Texas Gulf contract and more important, it is the price basis upon which Rio Grande accounts to its royalty holders. It further appears that there is no substantial difference in the quality of gas produced from' any of the several reservoirs in the field or area.

Ordinarily, the question of price is one to be settled by agreement of the parties, and it is not the function of the Commission primarily to set a wellhead price per mcf. The same may also be said as to the amount of gas to be taken from any particular purchaser. However, in the absence of agreement as to these items, it then becomes the primary duty of the common purchaser to devise in good faith a formula, which will be non-discriminatory as to price and ratable take among the various producers in the field. While ratable take is generally based upon a well’s allowable, this is not necessarily true in all cases. Where no allowable has been set, another reasonable basis may be selected. Deep South Oil Company of Texas v. Texas Gas Corporation, 328 S.W.2d 897 (Tex.Civ.App.1959, ref. n. r. e.). Once the common purchaser has in the absence of agreement set a price, the question of the good faith of the purchaser and the reasonableness of the bases chosen by it in setting the price may present a question for the Railroad Commission. Primarily, what the order of the Commission does in this case is to determine that Rio Grande is a common purchaser and that as such it must take gas from the Maguire well in accordance with the statutory provisions proscribing discrimination. The order adopted by the Commission is in proper form to meet the situation as it has so far developed. It remains to be seen whether further or additional orders will be required. A failure to agree when there is a dispute concerning the legal rights of the parties does not necessarily mean that they will continue to disagree when such rights have been settled. Here, the Commission has determined that Rio Grande must extend its lines to connect with Maguire’s well and take his gas without discrimination. We approve these holdings. It is not to be anticipated that hereafter no agreements will be made by the parties or that in the absence of agreement, the common purchaser will adopt an unreasonable plan for ascertaining the price to be paid and the quantity of gas to be taken.

Accordingly, the judgment of the District Court is reversed and the injunction issued by that Court is dissolved. Judgment is here rendered that appellee, Rio Grande Valley Gas Company, take nothing against appellants, Railroad Commission of Texas and Russell Maguire.

DISSENTING OPINION

GREENHILL, Justice.

As I understand the record in this case, no waste of oil or gas or protection of correlative rights are involved. No other producer is taking gas from the particular strata involved. While I could agree that the gas well was “in the same field” with other nearby wells producing from different horizons, I am unable to find any statutory authority authorizing the Railroad Commission to fix the price of gas where the producer and the pipeline company cannot agree upon a price.

Where oil is involved, there is frequently a posted price for the oil in the field; and it is not unreasonable to require the pipeline company to take the oil from the same field at the uniform “posted price.” So far as I know, however, there is no posted price for gas, and the price to be paid for gas has been the subject of private contract.

Perhaps it is desirable for the Commission to have this power; and perhaps it would be desirable for the Texas Railroad Commission to have the power to deal with these intrastate matters as the Interstate Commerce Commission has in interstate transactions.' But the Railroad Commission has those powers delegated to it by the Legislature. In my opinion, the Legislature has not provided for .the fixing of gas prices by the Commission under the circumstances here present, and has not authorized the Commission to compel the gas company to take the gas at the price fixed by it.

      . The complete text of Article 6049a, §§ 8 and 8a is as follows:
      “Sec. 8. Every person, association of persons or corporation who purchases crude oil or petroleum in this State, which is affiliated through stock-ownership, common control, contract, or otherwise, with a common carrier by pipe line, as defined by law, or is itself such common carrier, shall be a common purchaser of such crude petroleum and shall purchase oil offered it for purchase without discrimination in favor of one producer or person as against another in the same field, and without unjust or unreasonable discrimination as between fields in this State; the question of justice or reasonableness to be determined by the Railroad Commission, taking into consideration the production and age of wells in respective fields and all other proper factors. It shall be unlawful for any such common purchaser to discriminate between or against crude oil or petroleum of a similar kind or quality in favor of its own production, or production in which it may be directly or indirectly interested, either in whole or in part, but for the purpose of prorating the purchase of crude oil or petroleum to be marketed, such production shall be taken in like manner as that of any other person or producer and shall he taken in the ratable proportion that such production bears to the total production offered for market in such field. The Railroad Commission of Texas shall have authority, however, to relieve any such common purchaser, after due notice and hearing as hereinafter provided, from the duty of purchasing petroleum of inferior quality or grade.”
      “Sec. 8a. That in order to further conserve the natural gas resources of this State every person, association of persons, joint stock company, limited co-partnership, partnership, corporation, gas pipe line company or gas purchaser now, or hereafter, claiming or exercising the right to carry or transport natural gas by pipe line, or pipe lines, for hire, compensation or otherwise within the limits of this State, or which is now engaged or shall hereafter engage in the business of purchasing, or taking, natural gas, or residue gas or casinghead gas shall be a common purchaser thereof, and shall purchase, or take, such gas under such rules or regulations as may be prescribed by the Commission, in the same manner, under the same inhibitions against dis-criminations and subject to the same provisions as are herein set out with respect to common purchasers of oil.”

      . Article 6049d, Vernon’s Ann.Tex.Stats., relating to the allocation of the production of gas from a common source of supply defines the words, “pool”, “common pool”, “field”, and “common source of supply” as meaning a common reservoir. (Section 10)

      . Appellee calls attention to a paper by D. H. Gregg discussing the negotiation and drafting of gas purchase contracts . in which some twenty problems of drafting are discussed. The matter of price is in turn divided into eight sub-heads. 13th Annual Institute on Oil and Gas Law and Taxation, Southwestern Legal Foundation, p. 87.


source: Caselaw Access Project

author: WALKER, Justice. SMITH, Justice. HAMILTON, Justice.

license: Public Domain

text:
    RAILROAD COMMISSION of Texas et al., Appellants, v. WOODS EXPLORATION AND PRODUCING COMPANY, Inc., et al., Appellees.
    No. A-10825.
    Supreme Court of Texas.
    June 22, 1966.
    Rehearing Denied July 27, 1966.

      Vinson, Elkins, Weems & Searls, James E. Allison, Jr., and Leroy Jeffers, Houston, Clark, Thomas, Harris, Denius & Winters, James H. Keahey, Austin, Waggoner Carr, Atty. Gen., Austin, Linward Shivers and C. L. Snow, Jr., Asst. Attys. Gen., for appellants.
    Herring & Werkenthin, Austin, Miller B. Walker, Jr. and Levert J. Able, Houston, William E. York, McAllen, Price Daniel, Austin, for appellees.
   WALKER, Justice.

This is another controversy between operators with wells qn large tracts and those with wells on small tracts in the Appling Gas Field in Calhoun and Jackson Counties. Substantially the same parties have been before us on two previous occasions. In the first case it was held that each of the vertically separated reservoirs underlying the Field was to be considered as a separate reservoir in determining the right tq a Rule 37 exception. The action of the Railroad Commission in allowing a small tract operator to make multiple completions from a single well bore in the gas sands under her property was upheld, even though production from one sand would have enabled her to recover more than the quantity of gas under her land. Benz-Stoddard v. Aluminum Company of America, Tex.Sup., 368 S.W.2d 94. In the second case it was held that the large tract operators were precluded by lapse of time from attacking the ½-⅜ formula established by the Commission for allocating production from the Field, even though use of the formula allowed the wells on small tracts to drain substantial quantities of gas from the larger units. Railroad Commission of Texas v. Aluminum Company of America, Tex.Sup., 380 S.W.2d 599. The question to be decided now is whether the Commission may, for the purpose of protecting correlative rights, establish a ceiling on the monthly allowable of gas to be produced from a reservoir.

By Special Order No. 2-53,009 dated February 1, 1965, the Commission prescribed a formula to be used in determining the maximum reasonable market demand for five reservoirs in the Appling Field. This suit was instituted by Woods Exploration & Producing Co., Inc. et al. against the Commission to test the validity of the order and enjoin its enforcement. Ben Novak and others who are interested in small tract wells intervened as plaintiffs, while Aluminum Company of America and other large tract operators intervened and aligned themselves with the Commission. After the trial court rendered summary judgment in favor of the plaintiffs, declaring the order invalid and enjoining the Commission from enforcing the same, the Commission and the large tract operators prosecuted a direct appeal to this Court as authorized by Article 1738a.

The question presented for decision is relatively narrow, but a rather full statement is necessary to an understanding of the contentions made by the parties. Section 12 of Article 6008 provides that the Commission shall fix the monthly allowable of gas to be produced from a reservoir “at the lawful market demand therefor or at the volume that can be produced from such reservoir without waste, whichever is the smaller quantity.” It then directs that the monthly reservoir allowable be allocated among the wells entitled to produce from the reservoir so as to give each well its fair share of the gas to be produced, with the proviso that each well shall be restricted to the amount of gas that can be produced without waste. These and other provisions of Article 6008 will be adverted to later in this opinion.

The usual procedure for fixing the monthly gas allowable for a reservoir is set out in Statewide Rule 31. Under its provisions market demand is ordinarily determined primarily on the basis of Producers’ Forecasts filed with the Commission by operators having wells completed in the reservoir. These nominations state the volume of gas which each producer expects to be able to market from his wells the following month, and an operator may forecast any amount he desires provided it does not exceed the delivery capacity of his wells. If the Commission concludes that use of the forecasts does not result in a correct determination of reasonable market demand for the reservoir, it takes into account other pertinent facts such as average production for the previous twelve months or nominations filed by purchasers of gas. The power to do so is expressly recognized by Statewide Rule 31.

Under the provisions of Article 6008 mentioned above and where waste is not involved, market demand as determined by the Commission becomes the monthly reservoir allowable. The allocation formula applicable to the field is then used to divide the reservoir allowable among the wells entitled to produce from the reservoir. In the case of the Appling Field, this is the i/3-¾ formula we refused to strike down in Railroad Commission of Texas v. Aluminum Company of America, supra. Subject to any inequities inherent in the allocation formula, each well thus receives its fair share of the gas produced provided all wells are capable of producing their al-lowables. A well incapable of producing the allowable that would normally be assigned to it is known as a limited capacity well. Under prevailing Commission procedures, limited capacity wells are assigned the maximum allowables they can produce, and the remainder of the allowables they would otherwise be entitled to receive are allocated to other wells in the field. This brings us to the problem dealt with by the Commission in its Special Order No. 2-53,009. There is no dispute as to any of the material facts. Waste is not involved in the case, and there is nothing in the record to suggest that any gas produced from the Appling Field has been devoted to unlawful uses.

As indicated above there are a number of vertically separated reservoirs in the Appling Field. Five of these reservoirs are covered by the Commission’s order here in issue. One of them, the Middle Kop-nicky, is the deepest and by far the largest and most productive reservoir in the Field. It originally contained more than 360 billion cubic feet of gas. Each of the other four reservoirs covered by the order overlies the Middle Kopnicky and originally contained between 3 and 4½ billion cubic feet of gas. Under Rule 37 exceptions granted by the Commission, appellees and other town lot lessees were permitted to drill numerous wells on small tracts, most of them containing approximately Vio of an acre, and to make multiple completions from a single well bore in each of the several reservoirs underlying their lots.

The small tract wells have delivery capacities similar to those of the wells located on large tracts. A 1961 study disclosed that drainage was taking place from the Middle Kopnicky to the smaller upper zone sands through well bore communication in the wells with multiple completions. This well bore communication distorted the producing capability of the upper zone well completions and thus enabled the operators to file forecasts far in excess of what the true delivery capacity of the wells would have been in the absence of such communication. It had that effect because, as pointed out above, the amounts of the forecasts are limited only by the delivery capacities of the wells.

The i/3-¾ allocation formula in itself gave the small tract wells a tremendous drainage advantage over the larger gas units. Prior to the adoption of the order now in question, the Commission determined that operators of many wells on small tracts were following the practice of filing forecasts at or near the full delivery capacity of their wells. These forecasts, when combined with those filed by other operators and handled in accordance with the usual Commission procedure outlined in Statewide Rule 31, resulted in the assignment of very large reservoir allow-ables. The reservoir allowables were so great that the large tract wells, even though they had normal or even maximum delivery capacities, were incapable of producing the allowables representing their fair share of the gas as determined by allocation formula. They were accordingly classified as limited capacity wells and assigned the maximum allowables they were capable of producing; the remainder of the allow-ables to which they were entitled under the allocation formula was reallocated among the town lot wells. This enabled the latter to produce far more of the reservoir allowable than their share as determined by the basic ½-⅜ allocation formula, and the drainage advantage which the small tract operators already enjoyed by virtue of the formula itself was thus substantially enhanced.

An example will serve to illustrate the problem. One of the reservoirs in the Appling Field is designated as Segment 5, 7500', and 18 wells were completed therein. Seventeen of these wells were located on 7.132 acres, while the remaining well was situated on a 328-acre unit. Since the 17 small tract wells have a large aggregate delivery capacity, their operators were able to make correspondingly large forecasts for the month of July, 1964. The total delivery capacity of all 18 wells was approximately 898,000 MCF per month, and the production forecasts resulted in the determination that reasonable market demand, and hence the reservoir allowable, for the month was approximately 880,000 MCF. Under the basic ½-⅜ allocation formula, the large tract well was entitled to an allowable of 591,000 MCF, but the productive capacity of the best well completed in the reservoir was approximately 87,000 MCF per month. The productive capacity of the single large tract well was only about 34,000 MCF, and in accordance with the usual Commission procedures some 557,000 MCF were allocated to the town lot wells for the one month in addition to their shares of the reservoir allowable as determined by application of the ½-⅜ formula.

Aluminum Company of America requested the Commission to amend Statewide Rule 31 as applied to the Appling Field by either (1) establishing a formula for computing the maximum quantity of gas that might constitute market demand for a reservoir, or (2) discontinuing the practice of reallocating the excess allowables of limited capacity wells. The Commission chose the first alternative and entered Special Order No. 2-53,009 adopting Field Rule 11, the relevant portions of which are quoted in the margin. This is the order now under attack. Its effect is to establish as a ceiling on reasonable market demand the quantity of gas which, when fixed as the monthly reservoir allowable, would permit the well on the largest proration unit, if its delivery capacity were equal to the largest delivery capacity of any well in the reservoir, to receive an allowable it would be capable of producing.

It is unnecessary for us to consider some of the arguments advanced by appel-lees in support of the trial court’s judgment. As we view the case, the basic issue is whether the procedure for determining maximum market demand established by Rule 11 is beyond the authority delegated to the Commission by the Legislature in Article 6008. Appellees rely primarily upon the provisions of Section 12 mentioned above. It is their contention that the statute requires the Commission to determine lawful market demand and then, where waste is not involved, set the reservoir allowable at the amount of the market demand so determined. They insist that Rule 11 is invalid because it fixes an arbitrary limit based upon factors which have nothing to do with market demand.

Appellants emphasize Sections 1 and 22 of Article 6008, which provide as follows:

“Sec. 1. In recognition of past, present, and imminent evils occurring in the production and use of natural gas, as a result of waste in the production and use thereof in the absence of correlative opportunities of owners of gas in a common reservoir to produce and use the same, this law is enacted for the protection of public and private interests against such evils by prohibiting waste and compelling ratable production.
“Sec. 22. The Commission shall be vested with a broad discretion in administering this law, and to that end shall be authorized to adopt any and all rules, regulations or orders which it finds are necessary to effectuate the provisions and purposes of said law.”

They say that the remainder of the statute, and particularly the sections upon which appellees rely, must be construed in the light of these provisions. Since the declared purpose of the law is the protection of public and private interests by prohibiting waste and compelling ratable production, they contend that the Commission may properly consider the protection of correlative rights as one of the relevant factors in determining reasonable market demand. The Commission takes the position, therefore, that reasonable market demand is the total figure that allows each operator to produce his fair and allocated share of gas from a common reservoir within the framework of the existing allocation formula. Appellants further insist that the reservoir allowable and the individual well allocations are necessarily intertwined and constitute inseparable parts of a single whole. They point out that a reservoir allowable is not reasonable if it results in unreasonable well allocations, and from this premise they argue that the determination of reasonable market demand must be left to the discretion of the Commission so that unique situations such as that existing in the Appling Field can be handled through special regulation.

Appellants make a strong case for granting the Commission power to consider correlative rights in establishing a reasonable reservoir allowable, but our problem is to determine whether the Legislature has done so. From a reading of Article 6008 and other statutes in pari materia therewith, we agree with appellants that the term “lawful market demand” as used in_the third and fourth sentences of Section 12 means reasonable market demand for lawful uses. After considering all the provisions of Article 6008, however, it seems clear to us that the Legislature did not intend to authorize production from a reservoir to be limited to less than reasonable market demand except for the prevention of waste.

Section 10 of the statute makes it the duty of the Commission to regulate daily gas well production “in the manner and method herein set forth.” The Commission is then directed in general terms to prorate and regulate production for the protection of public and private interests in the prevention of waste and the adjustment of correlative rights, but the Legislature did not stop with this general grant of authority. Section 11 tells us when the powers granted by Section 10 may be exercised. The Commission is instructed there to regulate and prorate production for the protection of correlative rights “when evidence introduced at a hearing to be held as herein provided will support a finding made by the Commission” that potential production is in excess of reasonable market demand. This is a rather clear indication of the legislative intent that the Commission is not to be concerned with correlative rights unless it does make such a finding. It thus appears that the Commission was not intended to have the broad authority and discretion suggested by the provisions of Sections 1 and 22.

The second sentence of Section 12 provides that when the Commission finds that waste exists or is imminent or that the productive capacity of the wells exceeds market demand, it “shall then proceed by proper order to prorate and regulate the gas production from such reservoir on a reasonable basis.” If the Legislature had intended for the Commission to fix as the reservoir allowable any amount that might be reasonable under all the circumstances, Section 12 probably would not have gone beyond the first two sentences. See Rudman v. Railroad Commission of Texas, 162 Tex. 579, 349 S.W.2d 717. Instead of stopping at that point, however, the lawmakers spelled out in some detail how the Commission’s duty to regulate gas production is to be performed. It is directed to determine each month: (1) the lawful market demand for gas to be produced from the reservoir during the following month; and (2) the volume of gas that can be produced from the reservoir and from each well therein during such month without waste. The statute then provides in plain language that the monthly reservoir allowable of gas shall be fixed at the lawful market demand therefor or at the volume that can be produced without waste, whichever is the smaller quantity. In allocating the reservoir allowable among the wells, the Commission is authorized by Section 13 to consider the size of the tracts, the productive capacity of the wells, and “all other factors which are pertinent.” It seems rather significant then that the Commission was not given similar authority in fixing the reservoir allowable.

The Legislature undoubtedly contemplated that each well would receive its fair share of the gas produced, but it also specified the means by which that end is to be accomplished. In our opinion the fixing of the reservoir allowable is controlled by the clear and explicit terms of Section 12, and the authority granted to the Commission in that respect is not enlarged by the more general provisions of Sections 1 and 22. “The correction or relaxation of the Section 12 requirements is a legislative matter if the allowables fixed by the Commission pursuant thereto are seriously fallible.” Rudman v. Railroad Commission of Texas, supra.

In adopting the order now in question, the Commission has set an arbitrary limit on reasonable market demand for gas from the reservoir and hence upon the reservoir allowable. The limit is based upon factors which have nothing to do with market demand, and we agree with the trial court that the order is beyond the power delegated to the Commission by the Legislature. Appellants point out that Rule 11 will serve to reduce or eliminate any distortion in the reservoir allowables resulting from well bore communication or exorbitant forecasts, but this is purely incidental. The formula prescribed thereby is not related in any way to the quantity of gas passing between the reservoirs or to the amount by which the forecasts might be regarded as excessive.

We do not mean to suggest that reasonable market demand must always be fixed at the mathematical total of the Producers’ Forecasts for the month. Use of these nominations is merely an administrative device, and the Commission may consider and give appropriate weight to all facts that are relevant to a determination of reasonable market demand.

Appellants cite Railroad Commission of Texas v. Rowan Oil Co., 152 Tex. 439, 259 S.W.2d 173, Corzelius v. Harrell, 143 Tex. 509, 186 S.W.2d 961, and Brown v. Humble Oil & Refining Co., 126 Tex. 296, 83 S.W.2d 935, 87 S.W.2d 1069, 101 A.L.R. 1393. The opinions in these cases contain general expressions regarding the discretion vested in the Commission and its power to regulate production to protect correlative rights, but none of them throws any light on the question now before us. Appellants also direct our attention to the opinion in Benz-Stoddard, where it was said that the validity of Rule 37 and the exception thereto is based upon the principle that the Railroad Commission can so regulate the flow of gas that no unreasonable hardship need result from its application. We adhere to that view, but this Court is not authorized to enlarge the powers granted to the Commission by the Legislature.

It is also argued that the summary judgment was improper because there is no showing that the reservoir allowable determined for any month by use of the procedure provided in Rule 11 was less than the actual reasonable market demand for that month. Appellants cite Railroad Commission of Texas v. Houston Natural Gas Corp., 155 Tex. 502, 289 S.W.2d 559, as supporting this argument. In that case a rate established by the Commission was attacked as confiscatory, and we held that the manner in which the Commission arrived at its results was not material if the rate actually yielded a fair return. The decision might be in point if the present-suit had been brought for the purpose of questioning the reservoir allowable fixed for a particular month, but here we are concerned with an order which prescribes the use of an illegal method for determining the allowable at all times in the future. The order is subject to attack even though the reservoir allowable calculated in accordance with its provisions for a certain month might not be substantially more or less than the reasonable market demand for gas from the reservoir.

The judgment of the trial court is affirmed.

DISSENTING OPINION

SMITH, Justice.

I respectfully dissent. By Special Order No. 2-53,009 dated February 1, 1965, the Commission prescribed a formula to be used in determining the maximum reasonable market demand for five reservoirs in the Appling Field. Woods Exploration & Producing Co., Inc., et al., instituted this suit against the Commission to test the validity of the order and enjoin its enforcement. Ben Novak and others intervened as plaintiffs. Claire Benz-Stoddard intervened as plaintiff. Aluminum Company of America, Crown Central Petroleum Corporation and others intervened as defendants and aligned themselves with the Commission in an effort to uphold the order.

Plaintiffs and defendants filed motions for summary judgment. The trial court sustained plaintiffs’ motion and entered a judgment that “ * * * the ruling of the Railroad Commission on November 4, 1964 and the formal order thereon by the Railroad Commission dated February 1, 1965, being Special Order #2 53,009, effective December 1, 1964, adopting a new procedure for determining the maximum limit on the daily reasonable market demand from the five gas reservoirs, being Appling (Seg. 5) 7500' field, and the Ap-pling (Seg. 6) 7500' field, the Appling (Seg. 6) 7600' field, and the Appling (Seg. 6) 7600' lower field, and the Appling (Seg. A) Middle Kopnicky Field, situated in Calhoun County, Texas, is not within the statutory authority of the Railroad Commission under Sections 10, 11, and 12, Article 6008, R.C.S. and the undisputed facts and is therefore null and void.”

This Court has upheld the trial court judgment. This action of the Court effectively withdraws from the Commission the power granted it by the Legislature to consider correlative rights in establishing a reasonable reservoir allowable. I do not agree with the Court that Article 6008 or any section thereof either expressly or by implication withholds from the Commission the power to adjust correlative rights. The history of Article 6008 and other statutes in pari materia does not warrant the drastic holding made herein. I will agree that the Court has narrowed the question, but the result reached is destructive in that it takes from the Commission every semblance of power that this Court has in past decisions recognized that it possessed. The Rudman opinion is the Court’s principal authority. That case, as I will later demonstrate, involved no issue concerning the fixing of the field allowable for the field there involved. The plaintiffs cite authorities which have no application here. Those are cases wherein the definition of market demand was reached in dealing with statutes relating to market demand for oil. The market demand for oil is usually determined on a state-wide basis pursuant to Article 6049d, Section 6, and Article 6014, rather than on a field-wide or reservoir basis pursuant to Article 6008. Sections 1 and 22, especially, and even Section 12, do not limit the power of the Commission to enter only such orders as prevent waste. To the contrary the Article specifically directs the Commission to give consideration to protection of correlative rights.

The Commission was confronted with the type of evil mentioned in Section 1 when it adopted the order under consideration. The Commission realized that the undisputed facts warranted action to protect correlative rights and that without the order some of the owners of gas in the reservoirs here involved would not be able to obtain their fair share and would not be able to produce and use their fair share of the gas in the five reservoirs described in the order. Since the facts are undisputed, I deem it sufficient to state here excerpts from the affidavits of Kenneth B. Ford, affidavits 1 and 2 of Bob R. Harris and the affidavit of James E. Werner, all of which were attached to and in support of Defendants’ motion for summary judgment.

Kenneth B. Ford’s affidavit dated April 24, 1965, gives the following summation which shows the true picture at the time of entry of the order under attack.

“13. My study of producer’s forecasts, allowables, and production for small tract wells (two acres or less) in these five reservoirs shows that at the present time [April 24, 1965] and for the past several years, these operators of small tract wells, with few exceptions, have been nominating and/or receiving allowable for and/or producing each month more gas than was originally in place under their tracts in these reservoirs.
“14. Based on the facts presented in this Affidavit, it is clear that the special conditions that exist in these five Appling Field Reservoirs do not exist outside the Appling Field in any reservoir in Railroad Commission Districts 2, 3 and 4 and that statewide procedure as outlined in Statewide Rule 31 is not adequate for these special conditions. For this reason, Special Field Rule 11 written by the Commission is reasonably necessary for effective and fair regulation in these fields.”

Ford’s affidavit refers to information received from James E. Werner, Senior Geologist, since January, 1956. Werner’s affidavit, attached to Railroad Commission’s motion for summary judgment, recites that he had made an extensive study of all geological data in the Appling Fields, including induction electric logs on all wells, and micro-logs, core analyses, formation test results, sonic logs and formation density logs from all wells where such logs tests and analyses were obtained.

Affidavit No. 2 by Bob R. Harris, an employee of the Railroad Commission states:

“The Aluminum Company of America application was to amend the Commission’s procedure for determining maximum reasonable market demand for all reservoirs in the Appling Fields, but the evidence submitted at that time was not sufficient in the opinion of the Commission to justify applying it to all reservoirs. This is the reason the order applied only to the 5 reservoirs covered by the order.”
Werner’s affidavit states:
“I have prepared structure maps of the productive area of the gas reservoirs referred to below [the five involved] based on this study, and have determined by planimeter the number of productive acres in each reservoir. The results of this are set out below.”

Werner’s affidavit shows the results of these tests to be as follows:

“APPLING (SEGMENT A, KOP-NICKY, MIDDLE) FIELD
“The Appling (Segment A, Kopnicky, Middle) Field is the deepest reservoir in the Appling Fields, and also by far the largest. The other productive reservoirs, including those referred to below, lie above the Middle Kopnicky Sand. In my opinion, this reservoir originally contained 4,288 productive surface acres, of which Aluminum Company of America, Crown Central Petroleum Corporation and Pocantico Oil & Gas Corp. (Alcoa et al) have approximately 3,702 acres under lease. I have prepared an isopach map of the original net effective sand which is productive of gas in this reservoir, which was furnished to Mr. Kenneth B. Ford, a petroleum reservoir engineer, to enable him to determine net effective acre feet of productive sand.

“APPLING (SEGMENT 5, 7500') FIELD

“In my opinion, the Appling (Segment 5, 7500’) Field is a reservoir originally containing 435 productive surface acres, of which Alcoa et al have under lease approximately 385 acres. I have determined the net productive sand thickness in each of the wells in this reservoir and furnished this information to Mr. Kenneth B. Ford.

“APPLING (SEGMENT 6, 7500') FIELD

“In my opinion, the Appling (Segment 6, 7500') Field is a reservoir originally containing 352 productive surface acres, of which approximately 310 acres are under lease to Alcoa et al. I have determined the net productive sand thickness in each of the wells in this reservoir and furnished this information to Mr. Kenneth B. Ford.

“APPLING (SEGMENT 6, 7600') FIELD

“In my opinion, the Appling (Segment 6, 7600') Field is a reservoir originally containing 485 productive surface acres, of which 443 acres are under lease to Alcoa et al. I have determined the net productive sand thickness in each of the wells in this reservoir and furnished this information to Mr. Kenneth B. Ford.
“APPLING (SEGMENT 6, 7600', LOWER) FIELD
“In my opinion the Appling (Segment 6, 7600', Lower) Field is a reservoir originally containing 525 productive surface acres, of which 481 are under lease to Alcoa et al. I have determined the net productive sand thickness in each of the wells in this reservoir and furnished this information to Mr. Kenneth B. Ford.”

The Harris affidavit no. 1 as well as the affidavits heretofore discussed vividly portray the probable imminent evils contemplated in Section 1, Article 6008, supra, which would have resulted had the Commission elected to continue the normal procedure of determining the monthly allowable for each prorated gas reservoir in the Appling Fields area. The Commission was confronted with the necessity of determining whether to continue utilization of the procedures set out in Statewide Rule 31(c) and (e) or whether to discard the normal procedure and adopt in its place a method which under the undisputed evidence would adequately protect correlative rights and a method “deemed, necessary to restrict the production of gas to an amount equal to market demand as is required of the Commission by the statutes.” See the Exception in Rule 31. This was a special condition and the market demand order relates solely to the five Appling Field reservoirs. The Railroad Commission expressly found and recited in the order under attack that:

“From evidence adduced at said hearing, it was apparent to the Commission that procedure in use for determining the market demand for gas from the mentioned fields provided a means by which an operator could distort the market demand determination to such an extent that Commission proration and ratable take orders were rendered completely ineffective; that the resulting injury to correlative rights could be adjusted by modifying the market demand procedure; that the suggested alteration in the procedure for determination of reasonable market demand as modified by the Commission would reduce the ability to manipulate and distort the reasonable market demand determination for the fields.”

This Court should bear in mind that the order under attack was not entered as the result of our holding in the case of Railroad Commission of Texas v. Aluminum Company of America, supra. The market demand order is in no sense an attempt to circumvent our decision. The plaintiffs’ claim that such is the purpose of the order is wholly unfounded. The Railroad Commission order in the Aluminum Company case was effective January 30, 1961, whereas the Railroad Commission order in the present case was issued effective December 1, 1964. The order under attack is based on occurrences after January 30, 1961. The Railroad Commission order in Aluminum was entered on the basis of facts and conditions which existed on January 30, 1961; when the order became effective. When the order under attack was entered many material changes had occurred between January 30, 1961, and. May, 1964. The prior order did not and' could not adjudicate conditions existing-on December 1, 1964, or the validity of an. order effective on that date.

The hearing which preceded the adoption: of the order under attack was held on December 5 and 6, 1963. On November 4,. 1964, the Commission ordered its adoption,, effective December 1, 1964. The Examiner, who conducted the hearing for the-Railroad Commission, determined from an. examination of the producers forecasts allowable schedules, production reports and! well test reports filed with the Commission, by operators of many wells on small tracts,, that they were following the practice of.' filing producers forecasts, combined witln the forecasts of the other operators, causing the customary (Rule 31) Commission procedure for determining allowables to result in classification of wells located on larger, tracts as limited capacity wells (wells unable to produce the allowable which would! normally be assigned thereon), and the small tract wells received allowables for greater than the share of reservoir allowable they would have received pursuant to the 1/3 per well — 2/i acreage allocation formula in effect in the field.

The undisputed evidence conclusively establishes that in order to protect correlative rights, the Commission not only had the power under authority of the Legislature to adopt the order, but it would have been derelict in its duty if it had failed to so act. I think this case presents a state of facts which the Legislature intended for the Commission to adjust so as to ultimately give to each operator, small or large, his fair share of the gas in the reservoir. The condition here, so far as correlative rights are concerned, are analogous to the conditions described in the cases of Brown v. Humble Oil & Refining Company, 126 Tex. 296, 87 S.W.2d 1069, 1070, 101 A.L.R. 1393 (1935); Corzelius v. Harrell, 143 Tex. 509, 186 S.W.2d 961 (1945); Gulf Land Co. v. Atlantic Refining Co., 134 Tex. 59, 131 S.W.2d 73 (1939); Magnolia Petroleum Co. v. Railroad Commission, 128 Tex. 189, 96 S.W.2d 273 (1936); Railroad Commission of Texas v. Manziel, 361 S.W.2d 560, 93 A.L.R.2d 432 (Tex.1962).

In these cases, the Court was concerned with the question of the extent the Legislature had clothed the Commission with the power to regulate oil and gas production under the Texas Conservation Statutes. In Corzelius v. Harrell, supra, this Court said :

“The law under consideration states in detail the manner and method the Commission may follow in prorating and regulating the daily gas well production from each common reservoir. The Legislature recognized the difficulty of prorating and regulating the production of gas from a common reservoir. To make sure that the Commission was not to be bound by any narrow, technical rules in carrying out the objects of this law, the Legislature was particular to give the Commission broad discretion in the exercise of its power under the provisions of this law.” [Emphasis added.]

In Brown v. Humble, supra, on motion for rehearing, this Court emphasized the broad and liberal standards to be applied to the conservation orders of the Railroad Commission and stated that the duty is lodged with the Commission to make rules to carry out the mandates of the Legislature and to impartially enforce them. We further said that all rules and rulings of the Railroad Commission are presumed to be valid unless the contrary is made to appear.

These cases announce principles in keeping with repeated statutory declarations of the broad discretion vested in the Commission. See Section 22, Article 6008, supra. Another such statutory declaration is to be found in Article 6042, wherein it is provided :

“Particular powers herein granted to the Commission shall not be construed to limit the general powers conferred by law, and until set aside or vacated by some order or decree of a court of competent jurisdiction, all orders of the Commission as to any matter within its jurisdiction shall be accepted as prima facie evidence of their validity.”

In the case of Railroad Commission v. Rowan Oil Co., 152 Tex. 439, 259 S.W.2d 173, 176 (1953), we said that:

“All property is held subject to a valid exercise of the police power. That some operators will have a less profitable operation, be delayed in recovering their gas, or be in trouble with their creditors does not affect the Commission’s duty to enforce conservation by preventing waste. Neither does it make the Commission’s action arbitrary or confiscatory if correlative rights are protected.”

As heretofore pointed out, Rule 31 itself expressly reserves the power of the Commission to make any modifications or adjustments that the Commission in its discretion deems necessary to prevent waste or to protect correlative rights.

The Manziel case, supra, was one brought by the Manziels attacking a Railroad Commission order on the grounds that it would cause waste, that it would result in the confiscation of the Manziels’ property, that the permit was not necessary to protect the correlative rights of the Whelans and that the order was in violation of the Commission’s own rules. The Manziels contended that the Railroad Commission’s order authorizing the Whelans to drill a well at an irregular location was violative of Article 6029(4). The Commission took the position that it must have the authority to grant the location of water injection wells to prevent drainage and to protect correlative rights. Here the Commission was confronted with a situation where it had' adopted no field-wide spacing rule' for water injection wells, but had made special orders as to each operator desiring to flood. In Manziel, we upheld the order of the Commission, saying:

“The Commission has two primary duties in the administration and control of our oil and gas industry. It must look to each field as a whole to determine what is necessary to prevent waste while at the same time countering this consideration with a view toward allowing each-operator to recover his fair share of the oil in place beneath his land. In carrying out these duties, there has devolved upon the Commission the power to promulgate rules, orders and regulations that control the industry, and such are issued pursuant to the police power of the state, and that power may invade the right of the owner of the land to the oil in place under his land as long as it is based on some justifying occasion, and is not exercised in an-unreasonable or arbitrary manner. See Brown v. Humble Oil and Refining Co., 126 Tex. 269, 83 S.W.2d 935, 87 S.W.2d 1069, 99 A.L.R. 1107, 101 A.L.R. 1393 (1935).”

In view of these repeated judicial and statutory declarations of the broad powers and discretions vested in the Railroad Commission by the Legislature, it is inconceivable that this Court at this late date would hold that the Commission has no power to fix the Appling Field allowable in a manner that will result in reasonable individual well allocations and some degree of increased protection for the correlative rights of the Intervenor-Defendants.

I find no case which sustains the plaintiffs in their contention that the Railroad Commission has no power to consider the protection of correlative rights or to em-. ploy methods designed to see that each individual well gets its fair share of the total production from the common gas reservoir in fixing allowables. The Commission is not strictly limited to the clerical function of running up the mathematical total of the producers’ forecasts in determining the field allowable. The Court seems to indicate that the Rudman case, supra, so holds. I have hurriedly examined the Rudman record and. feel safe in saying that it does not. That case merely holds that the field allowable must be determined in advance of the month to which it is applicable and that it cannot be determined retroactively after the month has expired.

At this time I forego writing upon the question of whether or not the Commission’s and the other defendants’ motions for summary judgment should have been granted. I would, however, reverse the judgment of the trial court.

NORVELL and HAMILTON, JJ., dissent.

DISSENTING OPINION

HAMILTON, Justice.

I respectfully dissent. The Court’s opinion graphically sets out the mass confiscation of property and the gross injustice that results from an enforcement of Rule 31 prior to the amendment that is under attack here. According to Rule 31 before amendment the principal factor to be considered in determining reservoir market demand is the sum total of all gas which producers say they expect to produce the following month and submit on Producers’ Forecasts.

What caused the rule to break down, resulting in the chaos described in the Court’s opinion, was that producers of gas from small tracts (in most cases ¾0 of an acre) did not confine their forecasts to the volume of their own gas which they expected to produce the following month. In most of such cases a producer would say in effect that he had a sale for all the gas he could produce under the field proration formula, but in addition he could produce and sell more than ten times that much more gas belonging to his neighbors. By taking the sum total of such Producers’ Forecasts the Commission was not considering the market demand for gas which the producers had available for sale under the field proration formula as established by Rule 5, but was taking into consideration the gas of other owners, which the producers had no right to offer for sale or to produce. It is evident that consideration of this factor could not furnish any reasonable basis upon which the Commission could determine the true lawful market demand for gas to be produced from the reservoir under the existing regulations.

The Commission came to the conclusion that in considering and determining the market demand for gas to be produced from each reservoir that it should consider only so much of the Producers’ Forecasts as would not exceed the amount of gas which producers could lawfully produce from the reservoir under the allocation formula set out in Rule 5. This is all that Rule 11, the amendment under attack here, seeks to accomplish. It adds another factor to be considered by the Commission in arriving at the lawful demand. It allows the Commission to determine market demand for the gas to be produced from the reservoir under regulation rather than for gas produced at full capacity of the wells.

The real question, then, before the Court is what gas does the Commission take into consideration in determining lawful market demand at its monthly hearings. Does it take into consideration gas to be produced at full capacity of the wells in each reservoir or gas to be produced from each reservoir under the field regulations then in existence? If we determine that the Commission is correct in considering only the gas that can be lawfully produced under the regulations already in existence at the time of its hearing, then the problem with which the Court struggles in its opinion never does arise.

In determining whether the Commission is correct in its approach to this problem we must bear in mind that before the Commission ever had any right to exercise the broad powers the Legislature granted it to prorate and regulate the production of gas it first had to be determined that the capacity of the wells to produce gas from the reservoir in question exceeded the market demand for gas from such reservoir. This finding was made some years ago and the Commission proceeded as the statute directs by orders to promulgate rules and regulations governing the production of gas from each reservoir. These regulations established spacing rules and, for the reservoir in question, it established a 320-acre spacing unit rule with a proviso for exceptions to Rule 37, under which the Commission has granted 17 exceptions in order to prevent confiscation of gas. Then in order to prevent excess drainage from regular size units by these small units the Commission adopted Rule S, which is the ½-⅜ proration formula, ⅜ of production based on acreage, and ½ on per well factor. It is this rule that automatically puts a limit on the maximum amount of gas which can be produced from each well, and consequently a limit on the maximum of production of gas from ,each reservoir.

It is only after all these things have been done by the Commission that it then .at the direction of the Legislature has a hearing on or before the 20th of each month to determine the lawful market demand for gas to be produced from each reservoir for the following month. The lawful producing capacity of each reservoir has already been determined. The Legislature necessarily had in mind that this would have been done before the Commission was called upon to determine the lawful market demand. It necessarily follows that the Legislature, when it said “to determine the lawful market demand for gas to be produced”, had in mind the ga's to be produced under the regulations then in force.

All that Rule 11, the amendment under attack, does is to say that as to the Producers’ Forecasts it will consider so much of the forecasts as does not exceed the amount which the producer can lawfully produce under the regulations in force. If they do not exceed such amount, then the Commission will fix the market demand at the sum total of the Producers’ Forecasts. If they do exceed such amount, then the Commission will fix the lawful market demand at the maximum which the producers could produce under the regulations.

It can be seen that the Commission is not arbitrarily fixing the market demand, but is fixing it in the light of all the facts and circumstances before it at the time it is called upon to make the determination. The Commission considers not only the nominations of purchasers and Producers’ Forecasts, but also the supply of gas that may be lawfully produced from the reservoir. All these factors bear on the lawful or reasonable market demand the Legislature had in mind when it directed the Commission to determine the lawful market demand for gas to be produced from the reservoir.

This Court, in making its holding, says:

“In adopting the order now in ques-the Commission has set an arbitrary limit on reasonable market demand for gas from the reservoir and hence upon the reservoir allowable. The limit is based upon factors which have nothing to do with market demand * * (Emphasis mine.)

In the first place, the statute does not direct the Commission to determine the reasonable market demand for gas from the reservoir, but it is for the gas to he produced from the reservoir. This means a reservoir which is necessarily already under proration, or else the Commission would not be called upon by such statute to determine any market demand. Consequently, the market demand, with which we are concerned here, is for gas to be produced from the reservoir under proration. The Court is holding as a matter of law that the Commission cannot consider the supply of gas as is limited by proration in determining market demand, and has stricken the order of the Commission, which in effect says that the Commission will, consider nominations and Producers Forecasts, but only to the extent that they do not exceed the maximum amount that can be produced under proration, as fixed by the Commission. This is a strange holding, in view of the fact that the Commission would have no power or authority whatever, in a case where waste is not involved, to determine market demand, unless it did relate to correlative rights. Any such order of the Commission establishing the factors to be considered in determining lawful market demand would be without authority if it did' not concern correlative rights. Section 1, Article 6008, is as follows:

“Sec. 1. In recognition of past, present, and imminent evils occurring in the production and use of natural gas, as a result of waste in the production and use thereof in the absence of correlative opportunities of owners of gas in a common reservoir to produce and use the same, this law is enacted for the protection of public and private interests against such evils by prohibiting waste and compelling ratable production.” (Emphasis mine.)

By this provision and others the Legislature has said in no uncertain terms that the Commission may promulgate orders and rules only when they have some reasonable relation to the prohibition of waste or the compelling of ratable production among the owners of gas in a common reservoir. The Supreme Court of the United States, in Thompson v. Consolidated Gas Utilities Co., 300 U.S. 55, 57 S.Ct. 364, 371, 81 L.Ed. 510, in affirming the lower courts which had held invalid an order of the Texas Railroad Commission ostensibly issued under the authority of Article 6008, R.C.S., said this:

“Proration orders would not be valid if shown to bear no reasonable relation either to the prevention of waste or the protection of correlative rights, or if shown to be otherwise arbitrary.”

The whole opinion of this Court shows that it misses the entire purpose and reason for the existence of Article 6008. The very basis of any power given the Railroad Commission is to prevent waste or to protect correlative rights. Consequently, in analyzing Section 12 of Article 6008, after the Commission has determined that facts exist which give it authority to proceed to prorate and regulate oil and gas production, then everything the Commission does thereafter under Section 12 has to be either related to correlative rights or waste. The Commission is given no authority to establish any rule or order which does not have some reasonable relation to one or the other. Consequently, when this Court says that Rule 11 which is under attack here is invalid because it has the effect of protecting correlative rights' it is doing so in the face of the plain purposes and provisions of the statute.

The Court, in arriving at its holding, not only ignores the above-quoted Section 1 of Article 6008, but also ignores Section 22 of said article, which reads as follows:

“Sec. 22. The Commission shall be vested with a broad discretion in administering this law, and to that end shall be authorized to adopt any and all rules, regulations or orders which it finds are necessary to effectuate the provisions and purposes of said law.”

It is interesting to note how the opinion treats the provisions of Sections 1 and 22 as mere suggestions and comes to the conclusion that the Legislature had no intention of giving the Commission the broad authority and discretion contained in the provisions of said sections. The Court reaches its conclusion through an analysis of Sections 10 and 11 of Article 6008, which read as follows:

“Sec. 10. It shall be the duty of the Commission to prorate and regulate the daily gas well production from each common reservoir in the manner and method herein set forth. The Commission shall prorate and regulate such production for the protection of public and private interest:
“(a) In the prevention of waste as ‘waste’ is defined herein;
(b) In the adjustment of correlative rights and opportunities of each owner of gas in a common reservoir to produce and use or sell such gas as permitted in this Article.
“Sec. 11. The Commission shall exercise the authority to accomplish the purpose designated under item (a) of Section 10 when the presence or imminence of waste is supported by a finding based upon the evidence introduced at a hearing to be held as herein provided.
“The Commission shall exercise the authority to accomplish the purpose designated under item (b) of Section 10 when evidence introduced at a hearing to be held as herein provided will support a finding made by the Commission that the aggregate lawful volume of the open flow or daily potential capacity to produce of all gas wells located in a common reservoir, is in excess of the daily reasonable market demand for gas from gas wells that may be produced from such common reservoir, to be utilized as permitted in this Article.”

The Court, after noting the powers granted the Commission in Section 10 to regulate and prorate production for the protection of correlative rights “when evidence introduced at a hearing to be held as herein provided will support a finding made by the Commission”, that potential production is in excess of reasonable'market demand, it then makes this statement:

“This is a rather clear indication of the legislative intent that the Commission is not to be concerned with correlative rights unless it does make such a finding.”

That statement is just as true as it can be, but what the opinion fails to say is that the Commission did make that finding; it did become concerned with correlative rights; it did promulgate a proration order covering the reservoirs here involved, which is Rule 5, to protect correlative rights. Once the Commission made the finding that potential production is in excess of reasonable market demand all the broad powers and discretion conferred upon the Commission to prorate and regulate production of oil and gas came into effect. Yet the Court’s opinion says that, because the Commission first had to make that finding, “It thus appears that the Commission was not intended to have the broad authority and discretion suggested by the provisions of Sections 1 and 22.” It is difficult to see how the Court can conclude, from the reasons it gave, that the Legislature did not mean what it said.

I disagree with the Court’s definition of “lawful market demand” as used in that part of the sentence in Section 12 as follows: “* * * shall determine (1) the lawful market demand for gas to be produced from each such reservoir during the following month; * * The Court defines it as “reasonable market demand for lawful uses.” It does mean that, but it means more in the context in which it is used. I would add to the Court’s definition “and lawfully produced.” As stated above, there was in effect at the time the Commission promulgated the amendment now under attack a valid and subsisting proration order covering the reservoirs in question. This order is not under attack here and is still in force. Until set aside it has the effect of law. Section 16 of Article 6008 says: “It shall be unlawful for any person to produce gas from a gas well in violation of the valid orders of the Railroad Commission of Texas.”

While the Court says that it does not mean to suggest that reasonable market demand must always be fixed at the mathematical total of the Producers’ Forecasts for the month and that the Commission may consider and give appropriate weight to all factors that are relevant to the determination of reasonable market demand, they are rather empty words. The Court holds that the Commission may not consider correlative rights as a factor in the determination of market demand. In view of this holding of the Court there is no way in which the Commission can protect correlative rights. If Woods Exploration Company and a small pipe line can destroy correlative rights in the reservoirs in question it is unthinkable what larger pipe lines can do to gas fields all over this state wherever there are small tract owners located.

The Court says in effect that the Legislature gave broad powers to protect correlative rights to the Commission throughout the statutes on oil and gas but took it away with one stroke of the pen when it wrote this one phrase “shall determine (1) the lawful market demand for gas to be produced from each such reservoir during the following month; * * This in spite of the fact that the Legislature nowhere told the Commission what it must or must not consider in determining lawful market demand. The effect of this holding is to destroy, in so far as gas fields in which there are small tract owners are concerned, the power of the Commission to protect correlative rights. This Court has said numerous times contrary to the present ruling that the Commission has broad powers in so prorating and regulating oil and gas production as to protect correlative rights. Railroad Commission v. Shell Oil Company, 380 S.W.2d 556, at 559; Marrs v. Railroad Commission, 142 Tex. 293, 177 S.W.2d 941; Gulf Land Co. v. Atlantic Refining Co., 134 Tex. 59, 131 S.W.2d 73; Atlantic Refining Co. v. Railroad Commission, 162 Tex. 274, 346 S.W.2d 801; Halbouty v. Railroad Commission, 163 Tex. 417, 357 S.W.2d 364.

I would reverse the judgment of the trial court.

SMITH and NORVELL, JJ., join in this dissent.

      . All statutes are referred to by the article number under which they appear in Vernon’s Annotated Texas Civil Statutes.

      . Appellees say, and appellants do not deny, that this method of determining the amount each well may produce is expressly sanctioned and required by the provisions of Rule 5, which established the ⅝- % allocation formula for the Appling Field.

      . “Rule 11: a. The reasonable market demand for the Appling, Segment 5, 7500'; the Appling, Segment 6, 7500'; the Ap-pling, Segment 6, 7600'; the Appling, Segment 6, 7600', Lower; and the Appling, Segment ‘A’ Kopnicky, Middle Fields, Jackson and Calhoun Counties, Texas, shall be allocated to each well in. each field in accordance with the allocation formula for such field.
      b. The daily reasonable market demand for gas for each of the mentioned fields shall be the lesser gas volume figure as determined either by summation of nominated volumes taken from producers’ forecasts, or by dividing the reported productive capability as shown on the GWT-2 test of the well exhibiting the greatest ability to deliver gas to normal gathering facilities by the participation factor of the largest proration unit.
      c. The monthly reasonable market demand for gas shall be determined by multiplying the daily reasonable market demand by the number of days in the month.”

      . This conclusion is further supported by the history of our oil and gas conservation laws. The first Texas statute prohibited waste and authorized the Commission to “do all things necessary for the conservation of oil and gas.” Acts 1919, 36th Leg., p. 285, eh. 155. It was only after extended controversy that the Legislature adopted the so-called “Market Demand Act” in 1932. Acts 1932, 42nd Leg., 4 C.S., p. 3, ch. 2. This was preceded by the “Anti-Market-Demand Act,” which provided that waste “shall not be construed to mean economic waste, and the Commission shall not have power to attempt by order, or otherwise, directly or indirectly, to limit the production of oil to equal the existing market demand for oil.” Acts 1931, 42nd Leg., 1 C.S., p. 46, ch. 26. Governor Sterling is reported to have declared that he would veto a bill which authorized limitation of production to reasonable market demand, because he was interested only in preventing physical waste and could not see how limitation of production to reasonable market demand would have the effect of preventing waste. See Hardwicke, Legal History of Proration of Oil Production in Texas, Texas Law Review, 1937 Bar Association Number, p. 99. Against this background, it is rather difficult to believe that when the Legislature finally authorized the Commission to limit production to reasonable market demand, it meant that an even lower figure might be set whenever the Commission concluded that the same would constitute a reasonable reservoir allowable under all the circumstances.

      . All statutes are referred to by the article number under which they appear in Vernon’s Annotated Texas Civil Statutes.

      . Dandger Oil & Refining Co. of Texas v. Railroad Commission of Texas, Tex.Civ.App., 49 S.W.2d 837 (1932) reversed at 122 Tex. 243, 56 S.W.2d 1075 (1933); Railroad Commission v. Continental Oil Co., 157 S.W.2d 695 (Tex.Civ.App.1941, err. refused, w. o. m.); Colorado Interstate Gas Co. v. State Corporation Commission of Kansas, 192 Kan. 2, 386 P.2d 266 (1964).

      . Art. 6008. “Sec. 1. In recognition of past, present, and imminent evils occurring in the production and use of natural gas, as a result of waste in the production and use thereof in the absence of correlative opportunities of owners of gas in a common reservoir to produce and use the same, this law is enacted for the protection of public and private interests against such evils by prohibiting waste and compelling ratable production.

      “See. 12. It shall be the duty of the Commission to determine the status of gas production from all reservoirs in this state. If and when the Commission finds that waste exists or is imminent in the production of gas from any reservoir, or that the capacity of the wells to produce gas from any reservoir exceeds the market demand for gas from such reservoir, the Commission shall then proceed by proper order to prorate and regulate the gas production from such reservoir on a reasonable basis. On or before the 20th day of each month, the Commission, after notice and hearing, shall determine (1) the lawful market demand for gas to be produced from each such reservoir during the following month; and (2) the volume of gas that can be produced from such reservoir and each well therein during the following month, without waste. The Commission shall then fix the monthly reservoir allowable of gas to be produced from such reservoir at the lawful market demand therefor or at the volume that can be produced from such reservoir without waste, whichever is the smaller quantity. The monthly reservoir allowable shall be allocated among all wells entitled to produce gas therefrom so as to give each well its fair share of the gas to be produced from the reservoir, provided that each well shall be restricted to the amount of gas that can be produced from it without waste. The volume of gas so allocated to each well shall be regarded as the monthly allowable for such well. The daily market demand for gas, and the daily allowable, shall be determined by dividing the monthly demand and the monthly allowable by the number of days in the month.
      «< ⅜ * ⅜
      “Sec. 22. The Commission shall be vested with a broad discretion in administering this law, and to that end shall be authorized to adopt any and all rules, regulations or orders which it finds are necessary to effectuate the provisions and purposes of said law.”


author: CALVERT, Chief Justice.

text:
    The CITY OF TYLER et al., Plaintiffs in Error, v. ST. LOUIS SOUTHWESTERN RAILWAY COMPANY OF TEXAS et al., Defendants in Error.
    No. A-11260.
    Supreme Court of Texas.
    July 20, 1966.
    Troy Smith, Tyler, for plaintiffs.
    Roy P. Cosper and Clyde W. Fiddes, Ramey, Brelsford, Flock & Devereux, Tyler, Jackson, Walker, Winstead, Cantwell & Miller, D. L. Case, Dallas, for defendants.
   CALVERT, Chief Justice.

This is an original proceeding in this Court in the form of a motion to vacate, modify or suspend a judgment entered in 1906 in City of Tyler v. St. Louis Southwestern Ry. Co. of Texas, 99 Tex. 491, 91 S.W. 1. The proceeding is dismissed for want of jurisdiction.

In 1902 the City of Tyler and three of its residents, Johanah Pabst, W. H. Cousins and Sue Cousins, instituted a suit in the District Court of Smith County, Texas, in which they sought to enjoin St. Louis Southwestern Railway Company of Texas, movant here, from removing its general offices, machine shops and roundhouses from the City of Tyler. The trial court issued a temporary writ of injunction; but after a trial on the merits, the Court dissolved the temporary injunction and denied all relief sought. The judgment provided, however, that the temporary injunction should remain in force pending an appeal upon the filing by the plaintiffs of a proper supersedeas bond. The bond was filed.

The Court of Civil Appeals affirmed the judgment of the trial court. 87 S.W. 238 (1905). This Court reversed the judgments of the Court of Civil Appeals and trial court and proceeded to render the judgment which the trial court should have rendered, and decreed:

* * * it is ordered adjudged and decreed that the plaintiffs in error * * recover Judgment against defendant in error, the St. Louis Southwestern Railway Company of Texas, that said St. Louis Southwestern Railway Company of Texas, Shall Keep and maintain in said City of Tyler * * * its general offices, and shall Keep and maintain in said City its machine shops and it is further ordered, adjudged and decreed that the injunction heretofore granted on to wit; April 20th 1902, by the Judge of the District Court of Smith County, Texas * * * is hereby perpetuated * * * »

On July 12, 1965, the City of Tyler filed its petition in the District Court of the 7th Judicial District, Smith County, in which it alleged that St. Louis Southwestern Railway Company of Texas was moving its general offices and machine shops from Tyler in violation of the court’s judgment. The City prayed for a cease and desist order and for an order to show cause why the Railway Company and its officers and agents should not be held in contempt for violating the injunction perpetuated by the judgment of this Court. The Railway Company removed the suit to the United States District Court for the Eastern District of Texas, Tyler division, and filed a separate suit in that Court in which the principal relief sought was (1) a declaratory judgment that the judgment of 1906 was void and unenforceable, and (2) enjoining further prosecution of the contempt proceedings in the state district court. The United States District Court remanded the contempt action to the state district court and dismissed the separate suit for declaratory and injunctive relief. Railway Company then filed the instant proceeding in this Court.

Railway Company seeks to vacate, modify or suspend the judgment of 1906 on the ground that the Congress of the United States by enactment of the Transportation Act of 1920 and subsequent amendments, pre-empted the subject matter of the judgment and vested exclusive jurisdiction to regulate the subject matter thereof in the Interstate Commerce Commission, which jurisdiction the Interstate Commerce Commission has exercised by an order entered in 1953 expressly relieving Railway Company of any obligation under the laws of Texas, “contractual, statutory or other,” to maintain machine shops or other facilities at any particular place or places, and authorizing location changes of such facilities as in the judgment of the Board of Directors would enable Railway Company to operate the properties in the public interest with the greatest economy and efficiency.

The first question presented is whether this Court has jurisdiction to grant the relief sought. Before the relief sought can be granted, a preliminary determination must be made that changed conditions require or authorize vacation, modification or suspension of the 1906 judgment. The question to be decided, then, is this: Does the Supreme Court have jurisdiction to determine in the first instance whether a-judgment rendered and entered by it as a court of review has become void or unenforceable. because of changed conditions ? We hold that it does not; that jurisdiction so to determine lies with the trial court in which the case was pending when final judgment was entered.

The Supreme Court is primarily a court of appellate review, with its powers of review limited to questions of law. Sec. 3, Art. 5, Constitution of Texas, Vernon’s Ann.St.; City of Dallas v. Dixon, Tex.Sup., 365 S.W.2d 919, 923 (1963); Morrow v. Corbin, 122 Tex. 553, 62 S. W.2d 641, 645-646 (1933). Other than with respect to some particular matters not relevant to this discussion, the Court’s jurisdiction to act beyond the scope of appellate review is granted and limited by Sec. 3, Art. 5, supra, to the issuance of writs of habeas corpus “as may be prescribed by law, and under such regulations as may be prescribed by law;” the issuance of such writs “as may be necessary to enforce its jurisdiction;” the issuance of “writs of quo warranto and mandamus” in such cases as may be specified by the Legislature; and the ascertainment of “such matters of fact as may be necessary to the proper exercise of its jurisdiction.” Jurisdiction to vacate or modify its prior judgments not being expressly conferred on this Court, it must exist, if at all, by implication.

When the Supreme Court directs the issuance of a writ as an original proposition to preserve or enforce its jurisdiction, there can be no doubt of its jurisdictional power to vacate or modify the judgment which directed its issuance; having entered the judgment in the exercise of its original jurisdiction, it necessarily has the power to vacate or to modify it. It does not follow, however, that it may vacate or modify a judgment it has rendered and entered as a court of review after the judgment has become final.

When as a court of review this Court affirms a judgment of a trial court or enters a judgment which a trial court should have entered, the judgment becomes a judgment of both courts — the trial court and this Court. Crouch v. McGaw, 134 Tex. 633, 138 S.W.2d 94, 96 (1940) ; Houston Oil Co. of Texas v. Village Mills Co., 123 Tex. 253, 71 S.W.2d 1087, 1089 (1934). In that situation and in the absence of changed conditions it is the duty of the trial court to enforce the judgment as entered; and, if necessary, this Court can compel its enforcement. Gulf, Colorado & Santa Fe Ry. Co. v. City of Beaumont, Tex.Sup., 373 S.W.2d 741 (1964);. Conley v. Anderson, Tex.Sup., 164 S.W. 985 (1913); Hovey v. Shepherd, 105 Tex. 237, 147 S.W. 224 (1912). But jurisdiction of this Court to compel enforcement of the judgment does not include jurisdictional power to vacate or modify the judgment because of changed conditions; that power lies alone with the trial court which can subpoena witnesses, take evidence and make findings of fact from a preponderance of the evidence. While this question has not heretofore been decided, we have no doubt of the correctness of our holding. Any other holding would bring the jurisdiction of this Court and of trial courts into conflict in violation of the rule of construction announced in Morrow v. Corbin, 122 Tex. 553, 62 S.W.2d 641, 645 (1933), as follows:

“We should, of course, interpret and construe the various sections of the Constitution defining the jurisdiction of our several courts in such manner as to harmonize them, to the end that each court, whether trial or appellate, shall be permitted to exercise the power conferred upon it without conflict with the authority confided to another tribunal.”

Trial courts undoubtedly have jurisdiction to modify or vacate their judgments granting permanent injunctions because of changed conditions. See 68 A.L.R. 1180; 136 A.L.R. 765; Carleton v. Dierks, Tex.Civ.App., 203 S.W.2d 552, 557 (1947); writ ref., n. r. e.; Uvalde Paving Co. v. Kennedy, Tex.Civ.App., 22 S.W.2d 1091, 1092 (1929), no writ hist. Their judgments doing so or refusing to do so are, of course, reviewable on appeal; but their original jurisdiction to make the decision is exclusive.

The motion is dismissed.