Majority of the Working Interest Owners in the Buck Draw Field Area v. Wyoming Oil & Gas Conservation Commission

721 P.2d 1070, 94 Oil & Gas Rep. 636, 1986 Wyo. LEXIS 582
CourtWyoming Supreme Court
DecidedJuly 1, 1986
Docket85-287
StatusPublished
Cited by18 cases

This text of 721 P.2d 1070 (Majority of the Working Interest Owners in the Buck Draw Field Area v. Wyoming Oil & Gas Conservation Commission) is published on Counsel Stack Legal Research, covering Wyoming Supreme Court primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Majority of the Working Interest Owners in the Buck Draw Field Area v. Wyoming Oil & Gas Conservation Commission, 721 P.2d 1070, 94 Oil & Gas Rep. 636, 1986 Wyo. LEXIS 582 (Wyo. 1986).

Opinion

CARDINE, Justice.

After an administrative proceeding, the Wyoming Oil and Gas Conservation Commission (commission) ordered that the interest owners shut-in their oil wells in the Buck Draw North Oil and Gas Field until they agreed upon a unitization plan for secondary recovery operations. A majority of the working interest owners filed a petition for review in the district court, and the case was certified directly to this court. Several of the working interest owners, Kerr-McGee Corporation (Kerr-McGee), Marathon Oil Company (Marathon), and Louisiana Land and Exploration Company (LL & E), support the commission’s decision and have intervened. We must decide whether evidence considered by the commission was properly before it, whether *1072 substantial evidence supported the commission’s finding that further primary production would cause waste, and whether the conditional shut-in amounted to an improper forced unitization.

We affirm.

Facts

The Buck Draw North Oil and Gas Field was discovered by LL & E in 1983. LL & E and other interest owners developed the field quite rapidly, and there is presently at least one producing oil well on each 640-acre drilling unit. The initial reservoir pressure of the. field, 8,100 pounds per square inch (psi), has diminished as production has occurred.

In January of 1985 the commission, on its own motion, called a hearing to review data on the field’s diminishing pressure. The commission and some of the interest owners were concerned that the field’s pressure would drop below the bubble point 1 of 4,665 psi, making secondary recovery operations difficult. 2 On January 8, 1985, the commission issued an order restricting production so that the reservoir’s pressure would remain above the bubble point. The commission also ordered the owners to conduct a pressure survey, submit the data as soon as possible, and appear at the commission’s April meeting to report on the feasibility of unitization and secondary recovery.

Prior to the commission’s order, the owners had formed a technical committee to determine the best methods of developing the field. The committee continued its work throughout the spring of 1985 and hired an independent consulting firm, Jerry R. Bergeson & Associates, Inc. (Bergeson), to study secondary recovery possibilities. The committee’s work was not completed in time for the April hearing; so, at that hearing, the commission and the owners agreed to maintain the restrictions on production pending completion of the study. The commission issued an order to that effect.

After the April hearing, the technical committee received a preliminary Bergeson study based on data from a small part of the reservoir. The technical committee used this preliminary study for a model study to determine the technical and economic feasibility of secondary recovery. The committee concluded that a water-flooding operation would cause a significant loss of primary reserves if commenced while the reservoir pressure was above the bubble point. It recommended that unlimited primary production be resumed and that secondary recovery be studied further only after the pressure fell below the bubble point.

A majority of the owners accepted the committee’s recommendation, but Kerr-McGee, LL & E and Marathon disagreed. They favored a more extensive study of secondary recovery before the reservoir pressure fell below the bubble point. LL & E conducted an in-house study of the water-flood method of secondary recovery while Kerr-McGee retained Bergeson to study the miscible-gas-flood method.

On August 13, 1985, the commission held its main hearing to decide how the North Buck Draw Field should be further developed. The majority, which favored resuming unlimited primary production of oil, called four witnesses. Dr. Phil Schene-werk, a petroleum engineer for Ensearch Exploration Company, told the commission *1073 of the technical committee’s findings. He testified that there would be a significant loss of primary reserves if secondary recovery was begun with the field pressure above the bubble point. This opinion was supported by Robert Scott, an exploration manager for Chomey Oil Company, and Steve Mastovich, a Diamond Shamrock Corporation geologist. They presented testimony, data and exhibits which indicated that the oil-bearing formation could not be successfully flooded with water or gas because it was discontinuous and fractured. The water or gas would move through the fractures and bypass the portions of the formation where the oil was located. According to Bruce Heath, supervisor of improved recovery for Woods Petroleum Corporation and the majority’s fourth witness, it would be uneconomic to continue producing after an unsuccessful flood attempt because only the fluid used in the flood would be produced. The remaining oil that could have been produced under primary production would be trapped in place and lost.

Mr. Heath testified that it would be better to wait until reservoir pressure dropped below the bubble point before beginning any secondary operations. Primary production would then be safely completed and data would be available to analyze the prospects for secondary recovery. Mr. Heath stated that a risky immediate water flood would produce 3,713,000 barrels of oil equivalent while a safe water flood begun below the bubble point would produce only a little less, 3,397,000 barrels. According to Mr. Heath’s most optimistic projection, an immediate miscible gas flood would produce a 14.65 percent rate of return on investment, too little to justify the risks involved.

The three witnesses called by Kerr-McGee and LL & E based their testimony on the additional studies they had conducted after the technical committee decided that it would rely upon the preliminary Bergeson study. Unlike the technical committee’s studies, these studies were based on data from the entire field. These witnesses disputed all of the important conclusions drawn by the majority’s witnesses.

Robert Chebul, an LL & E production manager, stated that the North Buck Draw Field was a candidate for secondary recovery because it was continuous. That opinion was corroborated by Mr. Connie Hawkins, a senior geologist for LL & E who described the geologic origin of the formation and explained in great detail why he concluded that the formation was continuous and not highly fractured. David Kimes, a Kerr-McGee reservoir engineer, also testified that the formation was continuous and therefore a likely candidate for secondary recovery by either miscible gas flooding or water flooding.

Both Mr. Chebul and Mr. Kimes testified that secondary operations would succeed only if begun above the bubble point. Mr. Chebul explained how a water flood would be impaired below the bubble point:

“[W]hen you draw the pressure down below bubble point [the] gas breaks out of * * * solution in the oil and creates a gas saturation in the reservoir which wasn’t existing above the bubble point.

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721 P.2d 1070, 94 Oil & Gas Rep. 636, 1986 Wyo. LEXIS 582, Counsel Stack Legal Research, https://law.counselstack.com/opinion/majority-of-the-working-interest-owners-in-the-buck-draw-field-area-v-wyo-1986.