A Review of Studies on Organic Matter Preservation in Muddy Source Rocks

Abstract

Abstract: Many preservation ways of organic matter exist in the muddy source rocks. Besides the oxygen-deficient environment, the organic matter is stably preserved by the degradation and condensation, selectivity preservation, vulcanization and clay protection. The organic matters with different preservation mechanisms form the multiple organic micro-components, such as the sponge amorphism organic matter, configuration organic matter, sporomorph, and particle amorphism organic matter, etc. It is different evidently in the generating hydrocarbon time and the capacity of generating hydrocarbon, which is possible to lead to the wide interval of generating hydrocarbon in the muddy source rocks. In-depth understanding of the preservation mechanisms of organic matter, discussion of the relations of the different preservation mechanisms with each other and the relation between external sedimentary circumstance and organic matter preservation mechanisms, especially the interaction between minerals and organic matter, which are the essential and important problems to study on the organic matter in the future petroleum geology. It is of great significance for deepening the theory of oil and gas genesis, evaluating the oil and gas resources, exploring the new areas for petroleum exploration.

Key words: muddy source rock, organic matter preservation, degradation and condensation, natural vulcanization, clay protection, selectivity preservation

CLC Number:

TE112.1

FAN Fu, CAI Jin-gong, ZHANG Yong-sheng, CUI Hai-na. A Review of Studies on Organic Matter Preservation in Muddy Source Rocks[J]. Xinjiang Petroleum Geology, 2011, 32(6): 686-689.

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