Columbia Gas Development Corp., Houston, has tested a significant, horizontally drilled oil discovery in Grand County, Utah.
The 27-1 Kane Spring Federal flowed 914 b/d of crude oil and 290 Mcfd of natural gas through a 10/64 in. choke with 3,460 psi flowing tubing pressure from the Cane Creek zone of the Pennsylvanian Paradox.
The wildcat was drilled to 8,244 ft measured depth, 7,248 ft true vertical depth.
Columbia holds a 50% working interest in the well and is joined by Exxon Co. U.S.A. with a 50% working interest and an industry partner that retains a 35% reversionary working interest after payout.
Columbia and partners control more than 45,000 acres in Grand County, most of which is federal acreage. A second well in the area is expected to spud soon.
ELSEWHERE IN WYOMING
In other action, Silo field in Southeast Wyoming's Laramie County continues to be developed, with Gerrity Oil & Gas Corp., Denver, reporting a strong Cretaceous Niobrara completion.
Gerrity's 4-9H State flowed 1,013 bbl of oil during a 12 hr test.
Initially the well flowed 70 bbl/hr with 100 psi flowing tubing pressure through a 44/64 in. choke. By the end of the test flowing tubing pressure had increased to 200 psi, and production had increased to 110 bbl/hr.
The horizontal leg of the well extends 3,305 ft, of which 3,050 ft is in the Niobrara.
Gerrity drilled and completed the well in less than 1 month for less than $1 million.
Gerrity holds a 71% working interest in the well, Patrick Petroleum Co., Jackson, Mich., has a 15% working interest, and the remaining interest is held by various individuals.
Gerrity holds 100% working interest in offsetting acreage, with plans for continued development. Patrick has a significant leasehold farther south, in Weld and Larimer counties, Colo., where it owns 27,200 gross undeveloped acres.
AUSTIN CHALK
In the pacesetting Cretaceous Austin chalk area of South Texas, one of the busiest operators is Union Pacific Resources Co. (UPRC), Fort Worth.
Eight UPRC Austin chalk wells in Giddings field are producing 4,000 b/d of oil and 11 MMcfd of gas. The wells are in the Fayette County portion of the field.
The first well was tested in October 1990 and the most recent two were tested this month. The initial potentials of the eight wells total more than 7,000 b/d of oil and 15 MMcfd of gas.
UPRC owns 100% working interest in all the wells and has acquired more than 40,000 acres in the county.
As of early April, UPRC had completed more than 100 horizontal wells in the Austin chalk trend. Net production from the wells is more than 12,900 bbl of oil, 40 MMcf of gas, and 9,400 bbl of liquids.
There are 19 rigs working in the trend for UPRC, developing its 315,000 acre leasehold. About 100 more wells are planned for the chalk this year.
Operators are continuing to report strong Cretaceous Austin chalk completions in the First Shot field, Gonzales County, Tex.
Chesapeake Operating Inc., Oklahoma City, tested 2 Culpepper at 3,168 b/d of oil and 2.1 MMcfd of gas through a 48/64 in. choke with 400 psi flowing tubing pressure. The open hole completion is in the lower Austin chalk at 9,315-12,411 ft.
The well marks Chesapeake's eighth horizontal Austin chalk well. Chesapeake's schedule for the rest of 1991 calls for another 15 wells in First Shot field and 15 more in Pearsall field, Frio County.
Wainoco Oil Corp., Houston, has tested its third well in First Shot field, the 1 E. E. Smith Unit 2. A horizontal leg of 4,803 ft in the chalk yielded 2,056 b/d of oil and 1,250 Mcfd of gas during a 24 hr test through a 1 in. choke with 185 psi flowing tubing pressure.
Austin chalk pay was encountered at a vertical depth of about 9,260 ft.
Wainoco and Duncan Energy Co., Denver, have teamed for a fourth well on the prospect, the 1 E. E. Smith Unit 3, 1 1/2 miles east.
In Fayette County, Tex., Terry Resources Inc., Houston, completed 1H Makinson in a 2,900 ft lateral extension in the chalk. The well flowed 550 b/d of oil, 429 Mcfd of gas, and 485 b/d of water through a 48/64 in. choke with 135 psi flowing tubing pressure.
Terry owns a 100% working interest in the Giddings field well.
OKLAHOMA
Oasis Petroleum Corp., Houston, will drill a 3,150 ft lateral section in the Mississippian Osage in the Sooner Trend, near Enid, Okla. If the well goes as planned, 1-9 Holtzen will be the longest radial section to date in the Mississippian, Oasis said.
Some believe horizontal wells in the Sooner Trend could outproduce the Austin chalk, as vertical well production in the Sooner Trend is greater on average than the chalk, the company said.
The well was scheduled to spud Apr. 17, and Oasis plans a large scale drilling program upon its completion.
Copyright 1991 Oil & Gas Journal. All Rights Reserved.
