Lucky Mound field: A new Mississippian Sherwood shoreline field
- Balcron Oil, Billings, MT (United States)
- Hendricks and Associates, Inc., Denver, CO (United States)
Lucky Mound field produces oil and gas from the Sherwood interval of the Mississippian Mission Canyon Formation. Presently, eight wells are producing with development ongoing. Extensive coring, testing, logging, and petrographic evaluations throughout the field have allowed for detailed analysis of reservoir characteristics and paleoenvironmental interpretation. Sherwood shoreline fields typically produce from reservoir-quality packstones and grainstones trapped by a lateral facies changes into impermeable dolomite and anhydrite. At Lucky Mound, packstones, grainstones, and a productive dolomite facies all contribute to the producing interval. The productive dolomite facies is generally found in the upper portion of the Sherwood along the eastern margin of the field. Porosity as high as 22% and permeability values up to 16 md are present in the dolomite facies. These dolomites are the result of complete to partial replacement of micrite. In addition, the dolomitization process has enhanced intercrystalline and intraparticle porosity throughout the Sherwood interval. Pore types present include vuggy, intergranular, intraparticle, and intercrystalline. Pore occluding and replacive cements include fibrous calcite, prismatic calcite spar, baroque dolomite, anhydrite, celestite, pyrite, and chert. An understanding of carbonate depositional environments, diagenetic processes, Williston basin structural development, and Sherwood reservoir behavior is essential in the exploration for new Sherwood fields.
- OSTI ID:
- 6130718
- Report Number(s):
- CONF-9107109--
- Journal Information:
- AAPG Bulletin (American Association of Petroleum Geologists); (United States), Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Vol. 75:6; ISSN AABUD; ISSN 0149-1423
- Country of Publication:
- United States
- Language:
- English
Similar Records
Wabek and Plaza fields: Carbonate shoreline traps in the Williston basin of North Dakota
Habitat of Rival oil in Burke County, North Dakota
Related Subjects
020200* -- Petroleum-- Reserves
Geology
& Exploration
020300 -- Petroleum-- Drilling & Production
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
030300 -- Natural Gas-- Drilling
Production
& Processing
CARBONIFEROUS PERIOD
CRYSTAL STRUCTURE
DEVELOPED COUNTRIES
DIAGENESIS
DRILL CORES
DRILLING
EXPLORATION
FEDERAL REGION VIII
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGIC HISTORY
GEOLOGY
LITHOLOGY
MICROSTRUCTURE
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NORTH AMERICA
NORTH DAKOTA
OIL FIELDS
PALEOZOIC ERA
PERMEABILITY
PETROGRAPHY
PETROLEUM DEPOSITS
PETROLEUM GEOLOGY
POROSITY
RESERVOIR ROCK
RESOURCES
STRATIGRAPHY
USA
WELL DRILLING
WILLISTON BASIN