A subsurface study of the North Frisco City field, Monroe County, Alabama

Conference · Wed Sep 01 04:00:00 EDT 1993 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:6916542

Stephanson, M A; Cox, J G; Harmount, M; Bruno, L ^[1]

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1. Paramount Petroleum Company, Inc., Jackson, MS (United States)

The 1991 discovery of the North Frisco City field has led to a resurgence of industry activity in the updip Jurassic trend of Monroe County, Alabama. Six wells in the field are presently delivering 6,000 BOPD and 5 MMJCFGP out of the Frisco City Sand Member of the lower Haynesville Formation. The North Frisco City field is a combination structural-stratigraphic trap associated with Paleozoic basement topography. A geological and geophysical exploration model for Haynesville production in Alabama was developed from existing subsurface and seismic control. The model predicted hydrocarbons generated from Smackover carbonates migrated through an incompetent or absent Buckner Anhydrite seal into the overlying Frisco City Sand. The Frisco City Sand is vertically sealed by overlying Haynesville shales and anhydrites. The sedimentary strata of the Frisco City Sand Member at North Frisco City field are interpreted to have accumulated as fluvial deposits. The predominant lithology is a coarse- to fine-grained sandstone deposited in a sandy braided-stream environment. The sandy braided-stream deposits occur in stacked fining-upward sequences and have excellent reservoir character. Some of these sequences are very gravel rich and may have accumulated in braided streams associated with alluvial fans. A nonconformity exists totally between the Jurassic sediments and the underlying crystalline metamorphic basement rock. A three-dimensional (3-D) seismic survey was acquired after the discovery well was drilled. The survey covered 8 mi[sup 2] of surface area with a bin size of 82.5 ft. This provided excellent structural control across the prospective area and resulted in better drilling decisions. Also, once 3-D acquisition was complete, the field was developed at an accelerated pace, which has had a positive impact on cash flow and field economics.

• OSTI ID: 6916542
• Report Number(s): CONF-9310237--
• Conference Information: Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Journal Volume: 77:9
• 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
ALABAMA
DEVELOPED COUNTRIES
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC MODELS
GEOLOGIC STRATA
GEOLOGIC STRUCTURES
GEOLOGIC TRAPS
GEOLOGY
GEOPHYSICAL SURVEYS
HYDROCARBONS
JURASSIC PERIOD
LITHOLOGY
MESOZOIC ERA
MINERAL RESOURCES
NORTH AMERICA
OIL FIELDS
ORGANIC COMPOUNDS
PETROLEUM DEPOSITS
PETROLOGY
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SEISMIC SURVEYS
STRATIGRAPHY
SURVEYS
USA