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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: Principles of Hydrocarbon Generation and
Application
to Oil and Gas Exploration
By
Petroleum generation in the subsurface involves primarily
the geothermal (time-temperature) conversion of organic
matter into hydrocarbons. The type of organic matter, its
abundance, and the geothermal history of the sediments
largely determines the quantity and the type of petroleum
hydrocarbons generated in a specific source facies.
Many physical methods have been used to measure the
geothermal history of a sedimentary sequence but by far the
most informative, with respect to oil-gas generation, are the
geochemical changes in hydrocarbon type and composition
concomitant with increasing diagenesis. The chemical
parameters reflecting diagenesis are well documented and,
when applied to the exploration process, commonly are used
to evaluate the hydrocarbon potential of sedimentary
sections in frontier areas prior to extensive exploration
drilling.
In a complete basin assessment, a comprehensive
geochemical program provides pertinent, basic information
necessary to delineate organic facies, hydrocarbon source
facies, and the types of oil and/or gas which can be expected
within prospective reservoir facies. End_of_Record - Last_Page 3---------------