四川盆地二叠系烃源岩类型与生烃潜力

doi:10.11743/ogg20120102

Abstract

Abstract:

Based on samples from outcrops and cores,we analyzed various geochemical parameters such as elemental component,Rock-Eval and carbon isotopes of the Permian source rocks.The kerogens of the Permian source rocks are dominated by type Ⅱ,with local occurrence of type Ⅰ and/or Ⅲ kerogens.Their hydrocarbon generation capacity is determined by the total organic carbon(TOC)and Rock-Eval parameters.In general,mudstones have a higher TOC,and greater potential for hydrocarbon generation than limestones.We restored the hydrocarbon generation potentials of marine mudstonse and limestones with high thermal maturity,which is necessary for the evaluation of the highly mature source rocks in South China.The Permian source rocks in Sichuan Basin are generally of high thermal maturity at high to post mature stages.During the Early Cretaceous,the Permian source rocks entered into peak hydrocarbon generation and contributed to late gas accumulation in the upper marine assemblage in South China.

Key words: kerogen type, hydrocarbon generation potential, marine source rock, Permian, Sichuan Basin

CLC Number:

TE122.1

Liu Quanyou, Jin Zhijun, Gao Bo, Zhang Dianwei, Xu Mei’e, Tang Ruipeng. Types and hydrocarbon generation potential of the Permian source rocks in the Sichuan Basin[J]. Oil & Gas Geology, 2012, 33(1): 10-18.

References

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Types and hydrocarbon generation potential of the Permian source rocks in the Sichuan Basin

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