Cotton Valley Tight Gas

Cotten Valley Tight Gas Description ImageThe Cotton Valley subsurface formation is a tight gas play in Northeast Texas and Northwest Louisiana located just above the Haynesville/Bossier Shale.  It is Upper Jurassic and Lower Cretaceous in origin and consists of sandstone, limestone, and shale. The depth of the Cotton Valley formation is roughly 7,800 to 10,000 feet. Although it is mainly a natural gas play, some oil has been produced in parts of the Cotton Valley.

Some of the more active producers in the Cotton Valley are Petrohawk Energy, Goodrich Petroleum, Exco Resources, Forest Oil, XTO Energy (now part of ExxonMobil), Questar, Penn Virginia, Cabot Oil & Gas, Devon Energy, and El Paso Corp.

Cotton Valley Map

Cotton Valley News

U.S. BRIEFS

Feb 26, 1990 MINERALS MANAGEMENT SERVICE set terms for OCS Sale 123 of 5,698 blocks covering 30.5 million acres in the Central Gulf of Mexico. The sale, scheduled Mar. 21 at Le Meridien Hotel, New Orleans, will offer tracts 3220 miles off Louisiana, Mississippi, and Alabama in 4-3,200 m of water.

WHAT ARE WE PAYING TO FIND OIL, GAS IN MISSISSIPPI, ALABAMA?

May 7, 1990 Verne L. Culbertson David W. Miller Jackson, Miss. When explorationists look at the oil and gas provinces of Mississippi and Alabama, they must first decide where to commit their risk capital. The cost per barrel of oil (or gas equivalent) was calculated for all hydrocarbons discovered in Mississippi and Alabama during the six year period from 1981 through 1986. There was some concern that selecting a six year period was too short to produce representative data, but the problem with long

SMACKOVER OIL POTENTIAL UPDIP OF MEXIA-TALCO

Jun 18, 1990 G. Alan Petzet Exploration Editor Discovery of Clarksville field in Red River County, Tex., almost 5 years ago created a flurry of seismic surveys, leasing, and drilling as operators tried to duplicate the field along trend. The activity led to more questions than answers, but interest remains high. Observers don't agree whether the producing formation in Clarksville field is Jurassic Cotton Valley, as in nearby Bogata field, or an updip facies of Jurassic Smackover.

U.S. BRIEFS

Jun 18, 1990 SOUTHERN CALIFORNIA GAS CO. plans to buy 227 MMcfd of spot gas in June at $1.42/MMBTU, the same price it paid through May 21, when it took 551 MMcfd of spot gas. A WILLIAMS PIPE LINE CO. line spilled more than 75,000 gal of diesel fuel into the Minnesota River from a leak at the Eden Prairie, Minn., river crossing just south of Minneapolis. Fuel spread about 8 miles downstream, and boat traffic was halted while it was contained. Williams officials blamed failure of a check valve and connected

U.S. BRIEFS

Aug 13, 1990 MINERALS MANAGEMENT SERVICE released a draft environmental impact statement for OCS Sale 126 off Alaska scheduled for August 1991. The proposed sale area consists of 4,319 blocks covering more than 23 million acres of the Chukchi Sea in water depths of 100-300 ft. Comments on the draft EIS, available from the MMS office in Anchorage, Alas., will be accepted until Sept. 11.

U.S. DRILLING SLUMPED IN '89; INFILL, HEAVY OIL, COALBED GAS WORK BUSY

Sep 10, 1990 G. Alan Petzet Exploration Editor The number of wells drilled in the U.S. in 1989, when all wells have been reported, will be the lowest in nearly two decades, says Petroleum Information Corp.'s Resume 1989 yearbook. PI expects operators eventually to report that about 28,100 wells were completed during 1989, down more than 16% from 1988's 33,500. Of 21,398 completions on record at yearend 1989, 37.4% were oil wells, the lowest oil tally in nearly 20 years. The number of gas

FRAC HEIGHT MAY INCREASE AWAY FROM WELL BORE

Feb 25, 1991 Ercill Hunt Ercill Hunt & Associates Inc. Houston Well logs with deep investigation capabilities are necessary to determine accurately the height of hydraulically produced fractures. Logs with shallow investigation capability will indicate the height of the fracture near the well bore, but as shown in a test in an East Texas well, fracture height in some formations can be substantially greater away from the well bore. In the East Texas test, sponsored by the Gas Research Institute (GRI), six

EXPLORATION PACE FAST IN MISSISSIPPI, ALABAMA

Mar 4, 1991 G. Alan Petzet Exploration Editor Exploration in northern and southern Mississippi and adjacent northwestern Alabama is off to a fast start in 1991. A sample of activity in the area includes a potentially significant Cambro-Ordovician Knox dolomite play building in northern Mississippi in and west of the Black Warrior basin. ARCO Oil & Gas Co. has abandoned one wildcat in northwestern Mississippi.

HORIZONTAL DRILLING TECHNOLOGY ADVANCES

Mar 4, 1991 Horizontal drilling technology is making further advances in the Texas Austin chalk play as such drilling continues to spread in many U.S. land areas. Union Pacific Resources Co., Fort Worth, has completed a Cretaceous Austin chalk oil well with the longest horizontal well bore in Texas and what at 1 1/6 miles is believed to be the world's longest medium radius horizontal displacement. UPRC's 1 Borchers Trust, 8 miles northeast of Gonzales in Gonzales County, flowed 1,162 b/d of oil and

JET-ASSISTED DRILLING NEARS COMMERCIAL USE

Mar 11, 1991 Mike Cure Grace Drilling Co. Dallas Pete Fontana FlowDril Corp. Kent, Wash. Recent changes in a high-pressure, jet-assisted drilling system have been successfully tested in several East Texas wells. These encouraging results will help move the system from the test stage into commercial application. The higher the formation angle or the harder the rock, the better the test for the high-pressure, jet-assisted (Fig. 1) drilling system. Grace/FlowDril, a joint venture between Grace Drilling of

REMOTE WILDCAT ADDED TO MISSISSIPPI SEARCH

May 6, 1991 G. Alan Petzet Exploration Editor A Canadian operator conducting a broad exploration and development program in the U.S. has staked a remote Lower Cretaceous Washita-Fredericksburg wildcat in southeastern Mississippi. Norcen Explorer Inc., Houston, plans to drill the 1 Exxon Corp. et al., NW NW NW 25-3n-8w, in western Greene County, Miss. Projected total depth is 11,000 ft. The location is 1 3/4 miles southwest of Byrd, Miss., and 8 miles south of Avera field, which produces oil from several

HORIZONTAL WELL WILL BE EMPLOYED IN HYDRAULIC FRACTURING RESEARCH

May 20, 1991 A new 10-well research site is planned to enable more controlled experiments for better definition of hydraulic fracturing. One of the 10 wells will be a near-horizontal well that will monitor microseismic events along its length. The Gas Research Institute (GRI) has begun evaluating a low-permeability, gas-bearing sandstone as the target stratum for experiments to be conducted at its hydraulic fracture test site (HFTS). During a 4-year period, GRI will use the HFTS as a field laboratory to

CLARKSVILLE FIELD, RED RIVER COUNTY, TEX.: PRODUCTION AND FACIES INTERPRETATION

Jun 10, 1991 Chris H. Reed Petroleum Geologist Tyler, Tex. Clarksville field was discovered in December 1985 by a well targeting a deeper Paleozoic horizon. Since production began in 1986, this field has produced more than 1 million bbl of oil with the appearance of a considerably longer and more lucrative life. The producing horizon is a Jurassic age lithic conglomerate sitting unconformably on the Paleozoic and Triassic structural front of the buried Ouachita range. Facies correlation out of the basin

U.S. BRIEFS

Jun 24, 1991 SOUTHWESTERN ENERGY CO., Fayetteville, Ark., will hike 1991 capital spending to $48.1 million from an original budget of $32.2 million. The revised amount in-cludes $37.9 million for exploration and production, $9.5 million for utility system expenses, and $700,000 for other expenses. EXXON CO. U.S.A. let a contract to Jacobs Engineering Group Inc., Pasadena, Calif., for construction and engineering services for a 7,000 b/sd methyl tertiary butyl ether unit at its Baton Rouge, La., refinery.

U.S. BRIEFS

Aug 19, 1991 ATMOS ENERGY CORP., Dallas, let contract to CNG Services Inc., Midland, Tex., to build four public refueling sites for compressed natural gas vehicles in Texas and Louisiana at major oil company retail stations. Sites in Odessa, Lubbock, and Amarillo, Tex., will form the first U.S. network of CNG stations in a wide regional area. The station in Lafayette, La., will be that state's first public CNG refueling site.
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