Recent developments at Wilburton field, Latimer County, Oklahoma
- Anadarko Petroleum Corp., Oklahoma City, OK (USA)
Recent deeper drilling in Wilburton field has resulted in new production from the Spiro, Cromwell, and Arbuckle formations in a structurally high fault block in situ beneath the old field pay in the overthrusted Spiro. ARCO Oil and Gas Company first found production from Spiro in situ beneath a low-angle thrust fault in Sec. 36, T5N, R17E. Nine wells now produce from this reservoir. Two wells have been completed below the Spiro in the in-situ Cromwell reservoir, and others are thought to be productive. Three wells are currently being drilled for insitu Spiro and Cromwell. Structural data generated by drilling the in-situ Spiro and Cromwell pays revealed a southwest-dipping, upthrown fault block with nearly 2,000 ft of vertical relief. ARCO tested this feature with their ARCO 2 Yourman well in Sec. 15, T5N, R18E, discovering prolific gas production from the Arbuckle. The Arbuckle reservoir consists largely of vugs and solution-enlarged fractures in a clean dolostone. Conventional neutron-density logs show very low porosity, but cores and formation microscanner images reveal the vugs, some of which are several inches across. Permeability is created by a pervasive system of younger fractures and microfaults. All current production is from the uppermost 700 ft of the Arbuckle, with a gas column of at least 1,100 ft. To date, six Arbuckle wells have been completed, two are in completion, and two are being drilled.
- OSTI ID:
- 5535248
- Report Number(s):
- CONF-8909245-; CODEN: AABUD
- Journal Information:
- AAPG Bulletin (American Association of Petroleum Geologists); (USA), Vol. 73:8; Conference: American Association of Petroleum Geologists (AAPG) mid-continent section meeting, Oklahoma City, OK (USA), 24-26 Sep 1989; ISSN 0149-1423
- Country of Publication:
- United States
- Language:
- English
Similar Records
Exploration in mature areas
Karst-related diagenesis and reservoir development in the Arbuckle Group, Wilburton field, Oklahoma
Related Subjects
OIL FIELDS
EXPLORATION
RESERVOIR ROCK
OKLAHOMA
DOLOMITE
GEOLOGIC FAULTS
PERMEABILITY
POROSITY
WELL LOGGING
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATES
FEDERAL REGION VI
GEOLOGIC DEPOSITS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MINERAL RESOURCES
MINERALS
NORTH AMERICA
OXYGEN COMPOUNDS
PETROLEUM DEPOSITS
RESOURCES
USA
020200* - Petroleum- Reserves
Geology
& Exploration