Sedimentology and Coalbed Methane Geology of Middle Jurassic Coal Measures in Juhugeng Mine, Qinghai Province

Meng Li; Zheng Fei Zhang; Sheng Zhang; Ming Ming Wang; Xiang Dong Gao; Long Yi Shao

doi:10.4028/www.scientific.net/AMR.734-737.156

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 734-737Sedimentology and Coalbed Methane Geology of...

Sedimentology and Coalbed Methane Geology of Middle Jurassic Coal Measures in Juhugeng Mine, Qinghai Province

Abstract:

Field-based lithofacies in the Middle Jurassic coal measures of the Juhugeng coal mine area of Qinghai Province have been identified employing lithology, geometry and lateral facies relationships. The coal measures were deposited in a range of environments spanning from braided river, delta to lake, and economic coal seams have been formed in the deltaic interdistributary bay and fluvial flood basin environments. The coal has a rank ranging from gas coal to coking coal, and the vitrinite macerals have a relatively high content, being from 60%~80%. Cleats and fractures of coal reservoirs are well developed. The isothermal adsorption experiments reveal that coal in the Juhugeng mine has relatively low Langmuir volume and relatively high Langmuir pressure with low to medium absorbability. All these conditions are beneficial to the formation and preservation of the coalbed methane.

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Periodical:

Advanced Materials Research (Volumes 734-737)

Pages:

156-160

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.734-737.156

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Online since:

August 2013

Authors:

Meng Li, Zheng Fei Zhang, Sheng Zhang, Ming Ming Wang, Xiang Dong Gao, Long Yi Shao

Keywords:

CBM, Enrichment Condition, Juhugeng Coal Mine Area, Sedimentology

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