考虑烃源岩非均质性的排烃模型

doi:10.11743/ogg20050407

Abstract

Abstract:

Thickness,among the structural parameters of source rocks,has relatively large influences on hydrocarbon expulsion efficiency.Source rocks can be divided into complete expulsion and incomplete expulsion types,according to the relative relation between the continuous thickness and the maximum effective expulsion thickness of source rocks.The development and spatial distribution features of abnormal pressures determine the spatial distribution of episodic expulsion.Based on the distribution of abnormal pressure and structural parameters of source rocks,the geologic models of effective source rocks can be divided into complete expulsion model,incomplete expulsion model and episodic expulsion model.The mathematical models of these 3 kinds of hydrocarbon-expulsion geologic models are derived from the concept of rhythmic layering and source rock heterogeneity.Actual calculation of the source rocks in Niu-38 well verifies that the new models improve the accuracy of calculation.

Key words: heterogeneity, abnormal pressure, hydrocarbon expulsion model, numerical model, source rock

CLC Number:

TE112

Wang Ke, Zha Ming. A study on hydrocarbon expulsion model considering heterogeneity of source rocks[J]. Oil & Gas Geology, 2005, 26(4): 440-443,449.

References

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A study on hydrocarbon expulsion model considering heterogeneity of source rocks

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