Lockhart Crossing field: new Wilcox trend in southeastern Louisiana
Journal Article
·
· Am. Assoc. Pet. Geol., Bull.; (United States)
OSTI ID:5301373
In 1982, a significant onshore oil discovery in the lower Eocene Wilcox was made at Lockhart Crossing field, illuminating a new oil trend in southeast Louisiana. Twenty-eight producers and nine dry holes were drilled, resulting in development of 3400 productive acres with estimated recoverable reserves of 21 million bbl of oil after secondary recovery. The main field reservoir is a 40 to 80-ft (12 to 24-m) marine sandstone. The dominant facies is an upward-coarsening sequence of very fine to fine-grained glauconitic sandstone deposited as a nearshore marine bar. The associated facies is a younger, upward-fining, channelized sequence of medium to very fine-grained sandstone. Faulting initiated channeling and erosion into the existing nearshore bar facies with subsequent deposition of channel fill. Together these two facies constitute one reservoir. The primary trapping mechanism is structural, in the form of a rollover anticline. This solution gas drive reservoir is normally pressured and displays a concave-downward producing water level that initially masked the true productive limits of the field. 14 figures, 3 tables.
- Research Organization:
- Amoco Production Co., New Orleans, LA
- OSTI ID:
- 5301373
- Journal Information:
- Am. Assoc. Pet. Geol., Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Vol. 70:5; ISSN AAPGB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
CENOZOIC ERA
ENERGY SOURCES
ENHANCED RECOVERY
FEDERAL REGION VI
FLUID INJECTION
FOSSIL FUELS
FUELS
GAS INJECTION
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOLOGIC TRAPS
GEOLOGY
LOUISIANA
MINERAL RESOURCES
NORTH AMERICA
OIL FIELDS
OIL WELLS
PETROLEUM
PETROLEUM DEPOSITS
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RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
TERTIARY PERIOD
USA
WELLS
020200* -- Petroleum-- Reserves
Geology
& Exploration
CENOZOIC ERA
ENERGY SOURCES
ENHANCED RECOVERY
FEDERAL REGION VI
FLUID INJECTION
FOSSIL FUELS
FUELS
GAS INJECTION
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOLOGIC TRAPS
GEOLOGY
LOUISIANA
MINERAL RESOURCES
NORTH AMERICA
OIL FIELDS
OIL WELLS
PETROLEUM
PETROLEUM DEPOSITS
RECOVERY
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
TERTIARY PERIOD
USA
WELLS