--> Abstract: Estimation of In Situ Thermal Conductivity in the Jeanne D'Arc Basin, by Z. Huang and M. A. Williamson; #91012 (1992).

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ABSTRACT: Estimation of In Situ Thermal Conductivity in the Jeanne D'Arc Basin

HUANG ZHEUI, and MARK A. WILLIAMSON, Atlantic Geoscience Center, Bedford Institute of Oceanography, Dartsmouth, Nova Scotia, Canada

For more accurate estimates of petroleum generation, migration, and accumulation in the Jeanne d'Arc Basin, in situ thermal conductivities are estimated from cutting sample examination and sonic and density logs. The matrix conductivity of an interval of rock (at least 3 m thick) is calculated with a geometric mean model that uses published matrix conductivity values for 13 lithologies; 7 of these are laboratory measurements on samples from the Jeanne d'Arc Basin. The effect of temperature on both rock and pore water conductivity is corrected with the thermal gradient at each well location. Matrix sonic travel time and matrix density of each interval are also calculated according to lithological proportion, using published matrix sonic travel times and densities of major lithologies. reliminary results are providing compaction and temperature corrected borehole thermal conductivity profiles with errors generally less than 15%. The implications of these profiles for thermal models of the Jeanne d'Arc Basin source rocks are illustrated with reference to sensitivity studies that examine effects on petroleum generation and expulsion timing.

 

AAPG Search and Discovery Article #91012©1992 AAPG Annual Meeting, Calgary, Alberta, Canada, June 22-25, 1992 (2009)