Sequence stratigraphy of the upper Pennsylvanian Cleveland Formation: A major tight-gas sandstone western Anadarko Basin, Texas panhandle

Journal Article · Fri Apr 01 00:00:00 EST 1994 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:7120029

Hentz, T F ^[1]

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1. 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), Vol. 78:4; ISSN 0149-1423
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
GEOLOGIC FORMATIONS
STRATIGRAPHY
GEOLOGIC STRATA
DEPOSITION
NATURAL GAS DEPOSITS
SPATIAL DISTRIBUTION
PETROLEUM DEPOSITS
TEXAS
OIL FIELDS
EXPLORATION
GEOLOGIC TRAPS
PERMEABILITY
REGIONAL ANALYSIS
RESERVOIR ROCK
SANDSTONES
SEALS
SEDIMENTARY BASINS
SHALES
SOURCE ROCKS
DEVELOPED COUNTRIES
DISTRIBUTION
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
GEOLOGY
MINERAL RESOURCES
NORTH AMERICA
RESOURCES
ROCKS
SEDIMENTARY ROCKS
USA
020200* - Petroleum- Reserves
Geology
&amp; Exploration
030200 - Natural Gas- Reserves
Geology
&amp; Exploration