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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 67 (1983)

Issue: 9. (September)

First Page: 1410

Last Page: 1414

Title: Temperature, Subsidence, and Hydrocarbon Maturation in Extensional Basins: A Finite Element Model

Author(s): J.-CL. De Bremaecker (2)

Abstract:

The thermo-mechanical history of extensional basins is of great importance in determining their hydrocarbon potential. Because of the great variation of geologic conditions, a flexible method is needed to model this history. A one-dimensional finite element method is particularly suited for this purpose. Its use shows that the temperature distribution is out of equilibrium if the rate of sedimentation exceeds ~ 100 m/Ma (~300 ft/Ma). Favorable conditions for hydrocarbon production in three models are found between ~100 and 225°C, but this is not a general rule. In areas of reasonably flat interfaces the method yields excellent results at very little cost. It shows the interplay among sedimentation, temperature, and subsidence more clearly than has been possible heret fore.

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