Gravity modeling of a reef in Allegan County, Michigan

Conference · Mon Mar 01 04:00:00 EST 1993 · Geological Society of America, Abstracts with Programs; (United States)

OSTI ID:7207927

Wong, M L; Smith, W A; Harrison, III, W B ^[1]

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1. Western Michigan Univ., Kalamazoo, MI (United States). Dept. of Geology

The study of the Diamond Springs oil field in Allegan County focuses on the use of gravity to delineate a patch reef. The reef is approximately 1,400 feet deep and is located within the Middle Devonian Traverse Limestone. Its depositional environment was an open shelf, carbonate platform and lagoonal environment. The area of the reef is approximately one square mile and has a vertical relief of about 30 to 80 feet. Porous reef materials are commonly buried by muds or evaporites resulting in ideal conditions for the generation and entrapment of hydrocarbons. Reefs in the Traverse Limestone has produced over 100 million barrels of oil. Using data from cores and well logs available at the Michigan Basin Core Repository at Western Michigan University, a stratigraphic cross section of the reef was constructed. Based on this cross section, a theoretical gravity model is produced using a computer modeling program. Field work was then conducted. The gravity stations were 200 feet apart along a paved road. As the expected anomaly is small, repeat gravity measurements, using a Lacoste-Romberg gravimeter, were made in order to minimize the error, thus allowing the authors to discern the anomaly from the regional. The gravity models obtained from the reduced field data will then be compared with the theoretically determined models.

• OSTI ID: 7207927
• Report Number(s): CONF-9303210--
• Conference Information: Journal Name: Geological Society of America, Abstracts with Programs; (United States) Journal Volume: 25:3
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580000 -- Geosciences
DATA ANALYSIS
DEVELOPED COUNTRIES
GEOLOGIC DEPOSITS
GEOLOGIC MODELS
GEOLOGIC STRUCTURES
GEOLOGY
GEOPHYSICAL SURVEYS
GRAVITY SURVEYS
MICHIGAN
MINERAL RESOURCES
NORTH AMERICA
PETROLEUM DEPOSITS
PETROLOGY
REEFS
RESERVOIR ROCK
RESOURCES
SURVEYS
USA