Thermal maturation by vitrinite reflectance of Woodford shale, Anadarko Basin, Oklahoma

Journal Article · Thu Oct 31 23:00:00 EST 1985 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:5961839

Cardott, B J; Lambert, M W

The Woodford Shale (Upper Devonian-Lower Mississippian), a black shale widely regarded as an important hydrocarbon source rock, has attained thermal maturity to postmaturity with respect to the generation of liquid hydrocarbons in most of the Anadarko basin in western Oklahoma. Untreated whole-rock well cuttings and core material from selected 10-ft intervals of the Woodford Shale in 28 wells were examined under reflected white light. Thermal maturation was determined by measuring the reflectance in oil immersion (R/sub 0/) of first-generation vitrinite particles. A minimum of 45 reflectance measurements were recorded for each well representing one or more sample intervals. The Woodford Shale was sampled at depth from 5060 ft (1542 m) in the northeastern shelf to 25,115 ft (7655 m) in the deepest part of the basin. Computer-generated plots of vitrinite reflectance versus depth provide a regression equation that predicts the vitrinite reflectance of the Woodford Shale at any depth in the Anadarko basin and determines the amount of erosion. 5 figures, 4 tables.

• Research Organization: Univ. of Oklahoma, Norman
• OSTI ID: 5961839
• Journal Information: Am. Assoc. Pet. Geol., Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Vol. 69:11; ISSN AAPGB
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
BITUMINOUS MATERIALS
BLACK SHALES
CARBONACEOUS MATERIALS
CHATTANOOGA FORMATION
DEVONIAN PERIOD
ENERGY SOURCES
FEDERAL REGION VI
FOSSIL FUELS
FUELS
GEOLOGIC AGES
GEOLOGIC FORMATIONS
MACERALS
MATERIALS
MATURATION
MISSISSIPPIAN PERIOD
NORTH AMERICA
OIL SHALES
OKLAHOMA
OPTICAL PROPERTIES
PALEOZOIC ERA
PHYSICAL PROPERTIES
SOURCE ROCKS
USA