Geology and hydrocarbon production, Sweetwater field, Fisher and Nolan Counties, Texas

Conference · Sun Feb 01 04:00:00 EST 1987 · AAPG Bulletin (American Association of Petroleum Geologists); (USA)

OSTI ID:5338194

Mergele, J L; Breyer, J A ^[1]

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1. Texas Christian Univ., Fort Worth (USA)

The Sweetwater Canyon Sand field lies along the boundary of Fisher and Nolan Counties, north of Sweetwater, Texas. The field was discovered in 1955 when oil was found in Pennsylvanian sandstone in a well testing a structural anomaly in the Lower Ordovician Ellenburger Group. More than 4 million bbl of crude oil and 750 mmcf of gas have been produced from the field. The oil is trapped by the updip pinch-out of Pennsylvanian sandstone. The field is still in production, and yielded 58,486 bbl/year of oil from 1972 to 1981. The field occurs in a sandstone complex at the base of the slope separating the Eastern shelf from the deeper parts of the Midland basin. The complex consists of four sandstone units. The lowest unit, unit D, covers 4 mi{sup 2} (10 km{sup 2}) and averages 8 ft (2.4 m) in thickness. There is no production from this unit. Unit C occurs above and locally in contact with unit D. It covers 9 mi{sup 2} (23 km{sup 2}) and averages 37 ft (11 m) in thickness. A downslope extension of this sandstone connects unit C with Hollins field to the southwest. Most production in Sweetwater field is from this unit. Units A and B occur at the same stratigraphic level, above and in contact with unit C, but separate from each other. Together units A and B cover 8.5 mi{sup 2} (22 km{sup 2}). Both units have been productive. Lobe complexes similar to the Sweetwater field complex occur above and below the producing interval.

• OSTI ID: 5338194
• Report Number(s): CONF-8703189--
• Conference Information: Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (USA) Journal Volume: 71:2
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
FEDERAL REGION VI
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
GEOLOGY
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NORTH AMERICA
OIL FIELDS
ORDOVICIAN PERIOD
PALEOZOIC ERA
PENNSYLVANIAN PERIOD
PETROLEUM DEPOSITS
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY BASINS
SEDIMENTARY ROCKS
TEXAS
USA