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

Conference · Wed Sep 01 00:00:00 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-; CODEN: AABUD2
• Journal Information: AAPG Bulletin (American Association of Petroleum Geologists); (United States), Vol. 77:9; Conference: American Association of Petroleum Geologists (AAPG) mid-continent section meeting, Amarillo, TX (United States), 10-12 Oct 1993; ISSN 0149-1423
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
GEOLOGIC DEPOSITS
GEOLOGIC MODELS
GEOLOGIC STRATA
LITHOLOGY
OIL FIELDS
SEISMIC SURVEYS
ALABAMA
GEOLOGIC TRAPS
HYDROCARBONS
JURASSIC PERIOD
RESERVOIR ROCK
SANDSTONES
STRATIGRAPHY
DEVELOPED COUNTRIES
GEOLOGIC AGES
GEOLOGIC STRUCTURES
GEOLOGY
GEOPHYSICAL SURVEYS
MESOZOIC ERA
MINERAL RESOURCES
NORTH AMERICA
ORGANIC COMPOUNDS
PETROLEUM DEPOSITS
PETROLOGY
RESOURCES
ROCKS
SEDIMENTARY ROCKS
SURVEYS
USA
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration