This suit was instituted by Sun Oil Company seeking a temporary and permanent injunction against Earnest Whitaker and Doyle Henderson. Sun seeks to enjoin the two named defendants from preventing or interfering with Sun’s use of underground fresh water under a 267 acre tract of land in Hockley County, Texas, for a proposed water flooding project. The High Plains Underground Water Conservation District No. 1 intervened. The trial court, after a hearing, denied the motion for a temporary injunction and Sun Oil Company has perfected this appeal.
Sun Oil is the lessee of an oil, gas and mineral lease executed by L. D. Gann as lessor, on April 5,1946 covering the 267 acre tract in Hockley County. Whitaker is the owner of the land by virtue of a deed from Gann dated January 2, 1948. Whitaker and his son-in-law Henderson are presently cultivating the land as an irrigated farm. The deed to Whitaker reserved all minerals and expressly made the conveyance subject to the terms of the oil and gas lease. The lease has remained in force and effect by virtue of eight producing oil wells on the leased land. Production of the oil wells has diminished and in an effort to improve production Sun has obtained authority from the Railroad Commission to inject fresh water into two injection wells. To accomplish this Sun has drilled a water supply well in the northeastern corner of the tract and two injection wells in the central part of the tract. Sun alleged the defendants have repeatedly threatened to prevent them from using such water in the proposed water flooding project.
The oil and gas lease, under which Sun is asserting its right to the use of the subterranean water, contains the clause: “Lessee shall have free use of oil, gas, coal, wood and water from said land except water from Lessor’s wells for all operations hereunder”. (Emphasis added.) All parties agree that the right of Sun Oil, the lessee, to the free use of the underground water for water flooding turns on the construction of the phrase “for all operations hereunder”. As far as we have been able to determine this question has not been previously raised in this state.
It is the contention of Sun that since its valid oil and gas lease expressly provides that it “shall have free use of oil, gas, coal, wood and water from the said land except water from Lessor’s wells for all operations hereunder”; and that water flooding to enhance oil production under the lease is one such operation under its lease; it has a legal right to the free use of water from the leased premises for water flooding. For its refusal to enforce such right, Sun contends the trial court has abused its discretion.
The defendants and the intervenor take the position that at the time of the execution of the mineral lease in 1946, secondary recovery by water flooding was unknown in the South Plains area; that the “free use of oil, gas, coal, wood and water” by the lessee had reference to the ordinary drilling operations ; and that the lessee is limited to such operations of a general nature as will not substantially destroy the estate of the surface owner. As we understand it, the defendants do not contend the lessee does not have an implied right to conduct secondary *682 recovery operations, but say the lease does not show it was the intention of the parties at the time the lease was executed to permit the lessee the free use of any amount or all of the underground water to carry out water flooding. The trial court’s findings of fact and conclusions of law were favorable to the contentions of the defendants and intervenor.
It has long been settled in this state that the mineral and royalty owners hold the dominant estate, and have the right to use as much of the surface and to use it in such a manner as is reasonably necessary to carry out the purposes of the lease. Harris v. Currie,
In interpreting oil and gas leases it is the duty of the court to ascertain the intention of the parties. McMahon v. Christmann,
The phrase “all operations hereunder” is not ambiguous on its face. However the meaning of that language when applied to the rights of the parties hereto become uncertain and doubtful. We do not think it can be said such language is not subject to more than one reasonable meaning. Contrary to Sun’s contention “all operations hereunder” has not been given a settled, legal construction. It does not have *683 an exact meaning. The lease does not specifically grant the lessee the right to engage in secondary recovery by the process of water flooding. To hold the phrase under consideration is not subject to more than one reasonable interpretation, we would be compelled to hold as a matter of law that the lessee is entitled to free water for water flooding as an operation under its lease rights. We think such a holding would be untenable. We therefore conclude the trial court correctly admitted evidence pertaining to the conditions and circumstances under which the oil and gas lease was executed.
The lease was executed in 1946. There was ample evidence to the effect water flooding was not practiced in the West Texas area at that time, even though it was known in the oil industry for some time prior to 1946. Knowledgeable people in the Hockley County area became aware of secondary recovery by water flooding in the 1950’s. The fresh underground water Sun proposes to use is in the Ogallala formation, the only source of domestic and irrigation water in that area. Whitaker irrigates his crops from two irrigation wells and has one domestic well which draws water from the Ogallala formation. This fresh water producing formation is a closed, isolated reservoir to the extent there is no replenishment of the Ogallala water except from moisture that may percolate down to the formation after falling on the surface. This replenishment is irregular and relatively insignificant. These characteristics have been judicially determined by a holding that water in this formation in the Southern High Plains was subject to depletion and exhaustion for tax refund purposes. United States v. Shurbet, 5 Cir.,
In Wiser Oil Company v. Conley
In Atwood v. Rodman, Tex.Civ.App.,
In view of the absence of a settled, legal construction of the phrase “all operations hereunder,” together with the circumstances and conditions under which the lease was executed, we hold the parties to the lease did not intend to include the free use of fresh water to the lessee for water flooding. To hold otherwise would mean the potential destruction of the surface estate. Water is not a “mineral” within the phrase “all oil, gas and other minerals” found in oil and gas leases. Fleming Foundation v. Texaco, Inc. (Tex.Civ.App.)
In our opinion appellant Sun Oil Company has failed to show its right to the free úse of the water for water flooding. It therefore follows it failed to prove a probable right to a permanent injunction and a probable injury. Oil Field Haulers Ass’n v. Railroad Commission,
The judgment of the trial court is affirmed.
