Geology and reservoir characteristics of Moran field, Powder River basin, Wyoming

Conference · Fri Aug 01 04:00:00 EDT 1986 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:6962582

Severding, W H; Pence, T C

The Moran field was discovered June 1984 when Sun Exploration and Production Company successfully completed the E. Moran 1 well in the A sandstone member of the Permian Minnelusa Formation. This field is located along the township line between R29W and R70W in T49N, Campbell County, Wyoming, in the east-central portion of the Powder River basin. Production has been established from 15 wells in the A and upper B sandstone intervals. The original prospect was developed as an A sandstone play using subsurface maps of the Opeche Shale and Minnelusa sandstones. The discovery well encountered a productive A sandstone and a thick lower B sandstone interval in the Minnelusa section. Delineation of the field to the southeast revealed a productive upper B sandstone not anticipated in the original prospect. This upper B sandstone develops in paleolows created by the thinning of the lower B sandstone, similar to the relationship observed in Edsel field, Crook County, Wyoming. Moran field has been developed on 40-ac spacing and has a productive area of approximately 700 ac. Initial production rates have been as high as 540 BOPD with very little water production. Production is characterized by high decline rates due to rapid pressure depletion associated with an undersaturated oil reservoir. An oil-water contact is indicated in both sands by the presence of capillary transition zones. A biodegraded oil zone separates the oil-productive interval from the transition zone in the upper B sandstone. Cumulative production to December 1, 1985, is 471,322 bbl of oil. Potential for secondary recovery exists following unitization.

• Research Organization: Sun Exploration Co., Denver, CO
• OSTI ID: 6962582
• Report Number(s): CONF-8609129-
• Conference Information: Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 70:8
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ENERGY SOURCES
ENHANCED RECOVERY
FEDERAL REGION VIII
FOSSIL FUELS
FUELS
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGY
MINERAL RESOURCES
MONTANA
NORTH AMERICA
OIL FIELDS
OIL WELLS
PALEOZOIC ERA
PERMIAN PERIOD
PETROLEUM
PETROLEUM DEPOSITS
POWDER RIVER BASIN
RECOVERY
RESERVOIR ROCK
RESOURCES
USA
WELLS
WYOMING