EVALUATION OF THE HYDROCARBON GENERATION POTENTIAL OF SOURCE ROCKS OF THE JURASSIC YAOJIE FORMATION IN MULI DEPRESSION OF QILIAN MOUNTAINS

XU Jiu-sheng; WEN Zhi-gang; HU Dao-gong; ZHANG Yao-ling; QI Bang-shen

2015 Vol. 21, No. 3

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XU Jiu-sheng, WEN Zhi-gang, HU Dao-gong, ZHANG Yao-ling, QI Bang-shen. EVALUATION OF THE HYDROCARBON GENERATION POTENTIAL OF SOURCE ROCKS OF THE JURASSIC YAOJIE FORMATION IN MULI DEPRESSION OF QILIAN MOUNTAINS[J]. Journal of Geomechanics, 2015, 21(3): 446-452.

Citation:

EVALUATION OF THE HYDROCARBON GENERATION POTENTIAL OF SOURCE ROCKS OF THE JURASSIC YAOJIE FORMATION IN MULI DEPRESSION OF QILIAN MOUNTAINS

1.
Earthquake Administration of Hubei Province, Wuhan 430071, China
2.
Key Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071, China
3.
School of Earth Environmental and Water Resources, Yangtze University, Wuhan 430100, China
4.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

Received Date: 12 February 2014

Publish Date: 25 September 2015

Abstract

Abstract

The research results of the abundance, types and maturity of the organic matter of mudstone and coal seam of Yaojie coal-bearing formation in Muri depression of Qilian Mountains show that the mudstone of Yaojie coal-bearing formation is good hydrocarbon source rock and the organic matter type is sapropelic-humic (Ⅱ₁) during the mature stage in which gas generation is predominant. While the coal seams are relatively poor hydrocarbon source rocks, with the organic matter of humic type (Ⅲ) at the mature stage, which have a certain hydrocarbon generating potential. Based on the analysis of hydrocarbon source rocks in others formation, it is concluded that the mudstone of Yaojie coal-bearing formation and the lacustrine mudstone of Galedesi formation in late Triassic are the main source rocks of gas hydrates in Muri depression.
- Yaojie Formation /
- hydrocarbon generation potential /
- Muli depression /
- Qilian Mountains

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References

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