Sequence stratigraphy of the upper Pennsylvanian Cleveland Formation: A major tight-gas sandstone western Anadarko Basin, Texas panhandle
- Univ. of Texas, Austin, TX (United States)
The Upper Pennsylvanian (lower Missourian) Cleveland formation has yielded 459 bcf of natural gas and 18.6 million bbl of oil from low-permeability (<0.10 md) fluvial and deltaic reservoirs in a seven-county tight-gas area of the northeastern Texas panhandle. Regional study of the Cleveland and underlying Desmoinesian Marmaton Group siliciclastics using tight well control and cores established the sequence-stratigraphic framework to clarify the vertical and areal occurrence of Cleveland reservoirs, seals, and possible source rocks. Regionally distinctive facies stacking patterns in the study interval compose a sequence-stratigraphic framework of several westerly sourced systems and tracts and three depositional sequences (S). S1 is characterized by landward- and seaward-stepping deltaic and strand plain cycles (parasequences) deposited on the top-of-Oswego type 1 sequence boundary that define (in ascending order) Marmaton late-stage lowstand-wedge (LST:pw) and transgressive systems tracts (TST) and a lower Cleveland highstand systems tract (HST). A relative sea level drop with the onset of S2 deposition initiated development of a lowstand incised-valley system (LST:iv) in the middle to upper Cleveland that extended basinward of the lower Cleveland depositional shelf edge. Subsequent coastal onlap by thin deltaic systems of the overlying TSt marks the start of decreased sediment influx during late Cleveland time, resulting in thinning of parasequences and an increase in carbonate beds of high-frequency cycles in upper S2 and S3. Stratigraphic traps and pinch-out of reservoir facies within small, southeast-plunging anticlines make up most of the traps in the producing area. Potential new reservoirs should be targeted at the updip terminations of systems tracts, at lap-out positions of individual sand-rich HST and TST parasequences and along LST:iv valley-margin stratal terminations. 40 refs., 17 figs.
- OSTI ID:
- 7120029
- Journal Information:
- AAPG Bulletin (American Association of Petroleum Geologists); (United States), Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Vol. 78:4; ISSN 0149-1423; ISSN AABUD2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sequence-stratigraphic context of Pennsylvanian (Desmoinesian-Missourian) siliciclastics: Cleveland Formation and Marmaton Group, western Anadarko Basin, Texas panhandle
Depositional environments, sequence stratigraphy, and trap configuration of lower Wolfcampian clastics along eastern edge of Midland basin, west Texas
Related Subjects
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
DEPOSITION
DEVELOPED COUNTRIES
DISTRIBUTION
EXPLORATION
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGIC STRATA
GEOLOGIC STRUCTURES
GEOLOGIC TRAPS
GEOLOGY
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
OIL FIELDS
PERMEABILITY
PETROLEUM DEPOSITS
REGIONAL ANALYSIS
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEALS
SEDIMENTARY BASINS
SEDIMENTARY ROCKS
SHALES
SOURCE ROCKS
SPATIAL DISTRIBUTION
STRATIGRAPHY
TEXAS
USA