Thermal maturation by vitrinite reflectance of Woodford Shale, Anadarko Basin, Oklahoma: discussion

Journal Article · Wed Jul 01 04:00:00 EDT 1987 · AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)

OSTI ID:5923500

Katz, B J; Liro, L M

Cardott and Lambert (1985) proposed a single linear relationship to predict vitrinite reflectance values as a function of depth for the Woodford Shale within the Anadarko basin. They tested their proposed relationship by comparing published nitrinite data with that predicted by the regression. Several measured reflectance values proved to be significantly less than those predicted by the regression. Cardott and Lambert implied that the lack of correlation is due to analytical and interpretive error, the need for some refinement in the regression, and the presence of the thermal anomaly within the basin. The authors believe, however, that the observed discrepancies may be more fundamental, particularly those observed in deeper samples where much of the variability occurred. A single regression relating reflectance to depth of an individual unit does not take into consideration natural geologic variation within the basin. These geologic variations may be manifested in the geothermal gradient (past and present), burial history, or both (Tissot and Welte, 1984).

• Research Organization: Texaco Inc., Houston, TX
• OSTI ID: 5923500
• Journal Information: AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States), Journal Name: AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States) Vol. 71:7; ISSN AABUD
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
FEDERAL REGION VI
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGIC STRUCTURES
GEOTHERMAL GRADIENTS
MACERALS
MATURATION
MINERAL RESOURCES
NORTH AMERICA
OKLAHOMA
OPTICAL PROPERTIES
PETROGRAPHY
PETROLEUM DEPOSITS
PHYSICAL PROPERTIES
REFLECTIVITY
RESOURCES
ROCKS
SEDIMENTARY BASINS
SEDIMENTARY ROCKS
SHALES
SOURCE ROCKS
SPECTRAL REFLECTANCE
SURFACE PROPERTIES
TEMPERATURE GRADIENTS
USA