Structural/stratigraphic reconstruction of frontal [open quotes]Choctaw[close quotes] triangle zone within Oklahoma Atoka Trend - early controls (Prethrusting) on deposition of deep-water clastic reservoirs
- Seagull Mid-South Inc., Shreveport, LA (United States)
A structural and stratigraphic study in southwestern Oklahoma, encompassing approximately 30 townships in Atoka, Coal, and Pittsburg counties, was done using several hundred wells, surface geologic maps, and more than 400 mi of 1980 seismic data. Isopach maps of six Atokan sands covered various areas, all within a deep-water fan setting. Structural balancing, done on numerous geologic cross sections of six mi or less, allowed correlation of logs of the various reservoirs and structural details within the frontal [open quotes]Choctaw[close quotes] triangle zone. Two regional cross sections were made based, respectively. on 12 and 16 mi or recent high-fold common-depth-point seismic lines, with a minimum of one-well-per-mile control, diameter data, and surface geology. These cross sections were reconstructed by line balancing to illustrate the amount of thrusting in the section and the pre-Pennsylvanian normal faulting that subtly controlled the Atoka sands depositional framework. The thickest and most channelized sands are found downthrown to these earlier faults, with is past relationship now obscured by post-Atokan thrusting.
- OSTI ID:
- 7135333
- Report Number(s):
- CONF-9310237-; CODEN: AABUD2
- Journal Information:
- AAPG Bulletin (American Association of Petroleum Geologists); (United States), Vol. 77:9; Conference: American Association of Petroleum Geologists (AAPG) mid-continent section meeting, Amarillo, TX (United States), 10-12 Oct 1993; ISSN 0149-1423
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GEOLOGIC FAULTS
MAPPING
OKLAHOMA
GEOLOGIC STRUCTURES
RESERVOIR ROCK
STRATIGRAPHY
SAND
DEPOSITION
CRETACEOUS PERIOD
PETROLEUM GEOLOGY
DEVELOPED COUNTRIES
GEOLOGIC AGES
GEOLOGIC FRACTURES
GEOLOGY
MESOZOIC ERA
NORTH AMERICA
USA
020200* - Petroleum- Reserves
Geology
& Exploration
020300 - Petroleum- Drilling & Production