Producing characteristics of the Ellenburger formation of north Texas

Journal Article · Wed Jan 01 04:00:00 EST 1964 · Tulsa Geol. Soc. Dig.; (United States)

OSTI ID:6650498

Cole, F W

The Ellenburger formation, which is the deepest oil producing horizon in North Texas, is usually a secondary objective in oil exploration. Ellenburger oil production is characterized by the following: (1) small structural features; (2) high gravity, usually above 40/sup 0/ API; (3) undersaturation; (4) water production accompanying the oil; and (5) primary recovery averaging 25% of initial oil in place. Although most of the oil is left unrecovered at the end of primary operations, at the present time the appliction of secondary recovery techniques is not economical due to the small size of the structures and to the water influx. In those reservoirs having large differences between matrix and fracture permeability, there may be some possibility of increasing ultimate recovery by taking advantage of water imbibition from the fractures to the matrix. This would require alternate producing and shut-in cycles.

• OSTI ID: 6650498
• Journal Information: Tulsa Geol. Soc. Dig.; (United States), Journal Name: Tulsa Geol. Soc. Dig.; (United States) Vol. 32; ISSN TGSDA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
020300 -- Petroleum-- Drilling & Production
ENGINEERING
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
INDUSTRY
MINERAL RESOURCES
NORTH AMERICA
OIL FIELDS
PERMEABILITY
PETROLEUM DEPOSITS
PETROLEUM INDUSTRY
RESERVOIR ENGINEERING
RESERVOIR ROCK
RESOURCES
SOUTHWEST REGION
TEXAS
USA