Horizontal drilling in relatively mature U.S. onshore reservoirs continues in several states.
For example, American Exploration Co., Houston, 2-15 Midway Field Unit, in Lafayette County of South Arkansas flowed at rates of as much as 900 b/d of oil through a 20/64 in. choke with 450 psi flowing tubing pressure from Jurassic Smackover open hole at 7,149-80 ft.
The well, given a light acid treatment, is expected to produce a sustained 450 b/d of oil. Site is 8 miles north of Lewisville.
Other operators are completing or planning horizontal wells in several formations in Mississippi, Louisiana, East Texas, and the Texas Gulf Coast.
They also reported additional horizontal oil completions in the Mississippian Bakken shale trend in the Williston basin and Cretaceous Niobrara play in the Silo field area of Wyoming's Denver basin.
Meanwhile, Chevron U.S.A. Inc. completed a Permian Wolfcamp horizontal oil well in Flying W field of Winkler County.
Its 378H Keystone Cattle Co., 13 miles northeast of Kermit, pumped 160 b/d of 40.7 gravity oil and 8 b/d of water from open hole at 8,652-10,040 ft.
SOUTHEAST U.S.
Amerada Hess Corp. plans to drill one of the deepest known horizontal wells and one of few in a gas/condensate reservoir.
The company received a permit to drill 6 Mil-Vid, in Vidor Ames field, in the Vidor city limits, Orange County, Tex.
The permit calls for a 14,500 ft Eocene Yegua test with a 1,264 ft lateral drilled in a south-southeast direction. Location is in Thomas H. Breece Survey A-3.
Amerada Hess has completed several deep Yegua gas/condensate development wells in the field, which it discovered in 1989 (OGJ, Nov. 19, 1990, p. 78). The discovery well, 1 Venus Oil Co., Mil-Vid, flowed 8.041 MMcfd of gas, 817 b/d of 48.5 gravity condensate, and 14 b/d of water from perforations at 12,858-13,003 ft.
Unocal Exploration Partners, Houston, will target Upper Cretaceous Buda at a horizontal test in East Texas. Target depths for 1 Lane, in Houston County 4 miles west of Lovelady in East Fort Trinidad field, are 9,465 ft true vertical depth (TVD) and 12,680 ft measured depth (MD).
Coho Resources Inc., Dallas, is completing a Lower Cretaceous Washita-Fredericksburg sand horizontal oil well in Soso field, Jasper County, Miss.
The 1H Soso, 28-10n-13w, is an attempt to reduce water cut of 85-90% in three vertical wells completed in the formation.
Howell Petroleum Corp., Houston, said two of 19 exploratory wells in which it will participate with Paramount Petroleum Co. this year will be horizontal tests in Mississippi's Upper Cretaceous Selma chalk.
BAKKEN WORK EXPANDS
Columbia Gas Development Corp. completed its 12th successful horizontal well in 2 years in North Dakota's Ash Coulee field, where it plans six more development wells in 1991.
The 1 Rauch, 21-142n-101w, Billings County, 13 miles north of Medora, flowed 789 b/d of oil through an 18/64 in. choke with 600 psi flowing tubing pressure from Mississippian Bakken.
Exxon Co. U.S.A. plans to drill 1 Hamilton-Federal, 28-144n-101w, in North Elkhorn Ranch field of Billings County.
In McKenzie County, Pennzoil Exploration & Production Co. expects to encounter mostly northwest-southeast trending fractures in Bakken at a horizontal well to be drilled in 35-148n102w, North Branch field.
Pennzoil expects 10 ft of first Bakken shale at the site, 7 miles northeast of nearest Bakken production at a horizontal well in Pierre Creek field, Petroleum Information reported. North Branch field produces oil from deeper Devonian Nisku and Duperow and Ordovician Red River.
SILO FIELD GROWING
Union Pacific Resources Co. completed 1H Epler, 7-15n-63w, Laramie County, Wyo., the easternmost horizontal producing well in Silo field 15-17 miles northeast of Cheyenne.
It pumped 280 b/d of oil with 72 Mcfd of gas from Niobrara open hole at 7,772-11,710 ft MD. The well flowed at rates as high as 855 b/d of oil, 373 Mcfd of gas, and 55 b/d of water on earlier tests.
Exxon staked its first horizontal test of Niobrara in Silo field, Laramie County, Wyo.
Bottomhole location of 1 H Blevins Oil Unit, 6-15n-64w, will be within 1 mile west of Union Pacific Resources Co.'s 1 McGahan 21-5H, a horizontal Niobrara producer completed late in 1990.
Other operators working in Silo field include Snyder Oil Corp., Fort Worth; Cimarron Operating Co., Oklahoma City; Gerrity Co., Denver; and Cowan Oil Co., Greeley, Colo.
Elsewhere, Merrion Oil & Gas Corp., Farmington, N.M., staked 1 Federal, 28-20n-5w, a planned Jurassic Entrada horizontal test in Ojo Encino field, McKinley County, N.M. Merrion expects the zone at 5,879 ft TVD.
OKLAHOMA
Eastern and southern Oklahoma are hosting more horizontal drilling.
PBM Production Co., Dallas, plans a 2,000 ft well in Pennsylvanian Bartlesville sand at about 1,700 ft TVD in Osage County.
The 26 Osage, 13-22n-10e, will be in Wildhorse field west of Skiatook. The operator plans to commingle oil produced from the Bartlesville horizontal section with oil encountered in Pennsylvanian Cleveland at 900-1,000 ft in the vertical part of the hole.
White Buffalo Petroleum Co., Tulsa, sought spacing and pooling for multiple horizontal wells in sections 3, 10, and 11-19n-7e in the Jennings field area of Creek County. The company applied for horizontal drilling units to produce oil from Pennsylvanian Red Fork and Bartlesville and Mississippian-Devonian Misener sands.
BHP Petroleum (Americas) Inc. plans to reenter and horizontally drill 10 Banks, 7-6s-1w, Love County, in a link area where North Simon and Northeast Oswalt fields meet. BHP plans a 1,368 ft northeasterly lateral in Ordovician Viola at TVD 9,486 ft.
Copyright 1991 Oil & Gas Journal. All Rights Reserved.
