Balanced cross section through Wilburton gas field, Latimer County, Oklahoma: Implications for Ouachita deformation and Arbuckle (Cambro-Ordovician) exploration in Arkoma basin

Conference · Tue Aug 01 04:00:00 EDT 1989 · AAPG Bulletin (American Association of Petroleum Geologists); (USA)

OSTI ID:5533892

Camp, W K; Ratliff, R A ^[1]

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1. Anadarko Petroleum Corp., Oklahoma City, OK (USA)

A computer-balanced regional cross section allows several new interpretations for the structural development of the Wilburton gas field. The gas-productive deep Arbuckle structure is interpreted to be in the hanging wall of a high-angle, south-dipping reverse fault. This fault may be a reactivated normal fault based on Pennsylvanian lower Atokan thickness changes and by analogy to comparable extensional faults to the north. Overlying the Arbuckle fault block is an imbricated thrust sheet containing Pennsylvanian Spiro and Cromwell sandstone reservoirs where gas production has been established from both the hanging wall and footwall fault blocks. The main thrust originates from a detachment zone within Mississippian shales to the south and ramps over the deeper Arbuckle fault block along the southern margin of the field. Minimum horizontal displacement of the hanging wall Spiro cutoff is 2.3 mi (3.7 km). This estimate is significantly smaller than that shown by previously published sections through the area, yet is still too large to be adequately accommodated by blind thrusting north of Wilburton field. Well and surface data indicate that much of the displacement instead may have been accommodated by north-dipping backthrusts. Although poorly constrained, at least some fault movement on the Arbuckle reverse fault appears to postdate the overlying thrust-faulted structures.

• OSTI ID: 5533892
• Report Number(s): CONF-8909245--
• Conference Information: Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (USA) Journal Volume: 73:8
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030200* -- Natural Gas-- Reserves
Geology
& Exploration
CAMBRIAN PERIOD
CROSS SECTIONS
FEDERAL REGION VI
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NORTH AMERICA
OKLAHOMA
ORDOVICIAN PERIOD
PALEOZOIC ERA
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY BASINS
SEDIMENTARY ROCKS
SHALES
SOURCE ROCKS
USA