木里盆地侏罗系煤层气主控因素及成藏模式

doi:10.19388/j.zgdzdc.2019.04.12

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Abstract The demand for natural gas is increasing yearly, therefore it is urgent to find an alternative energy for conventional natural gas. The Middle-Lower Jurassic in Muli Basin is rich in coal resources with thick coalbeds and huge coalbed methane potential. In this paper, field geological survey, sample analysis tests, drilling and logging data and gas content on-site analysis were used to study the occurrence characteristics, reservoir conditions, main controlling factors and coalbed methane accumulation models of Muli Formation in Muli Basin. The results show that the thickness of the coalbeds in Muli Basin is great, and the burial depth is moderate. The coalbeds are mainly composed of gas coal and coking coal and are in the middle-high metamorphism stage. Gas content in Muli Formation coal is relatively high. The potential of coalbed methane resources is good. The metamorphic degree of coalbeds and the sealing capacity of the top and bottom barriers control the enrichment of coalbed methane. The accumulation models of Jurassic coalbed methane in Muli Basin are mainly gentle syncline and large monoclinic structures. The research of these controlling factors and accumulation models will provide references and basis for further coalbed methane exploration and exploitation in Muli Basin.

Key words： Muli Basin Jurassic coalbed methane accumulation model

Received: 22 April 2019

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	Articles by authors
	TIAN Ya
	DU Zhili
	ZHANG Wenlong
	CHEN Yi

Cite this article:

TIAN Ya,DU Zhili,ZHANG Wenlong, et al. Main controlling factors and accumulation model of Jurassic coalbed methane in Muli Basin[J]. , 2019, 6(4): 88-94.

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http://www.zgdzdcbjb.com/EN/10.19388/j.zgdzdc.2019.04.12 OR http://www.zgdzdcbjb.com/EN/Y2019/V6/I4/88

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