Natural Gas Geoscience ›› 2010, Vol. 21 ›› Issue (6): 1057-1060.doi: 10.11764/j.issn.1672-1926.2010.06.1057

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Comparison of Controlled Factors for Coalbed Methane and Shale Gas Accumulation

JIANG Wen-Li, ZHAO Su-Ping, ZHANG Jin-Chuan, YE Xin   

  1. 1.School of Energy Resources,Key Laboratory of Marine Reservoir Evolution and Hydrocarbon
    AccumulationMechanism,Ministry of Education,China University of Geosciences (Beijing),Beijing 100034,China;
    2.Strategic Research Center of Oil and Gas Resources,Ministry of Land and Resources,Beijing 100083,China;
    3.Langfang Branch,Research Institute of Petroleum Exploration and Development,PetroChina,Langfang  065007,China;
    4.Exploration and Production Research Institute,SINOPEC,Beijing100083,China
  • Received:2010-01-15 Revised:2010-05-06 Online:2010-12-10 Published:2010-12-10

Abstract:

It is rapid development of CBM in China,in contrast shale gas is starting.It is important to elucidate the common and difference between CBM and shale gas,because of similar aspects of gas sources,migration,preservation and accumulation between them.There is mixing of CBM and shale gas in some basins.The accumulation of both gases is constrained by reservoir thickness,thermal maturity,organic matter content,and reservoir pore and microfracture.The CBM is also affected by structure and hydrogeology.By contrast of depositional conditions,the coal was mainly formed in the seashore,delta plain,alluvial plain and front of alluvial fan,while the shale was quickly deposited in the reductive environment.

Key words: Coalbed methane, Shale gas, Hydrocarbon accumulation, Mixed sedimentation

CLC Number: 

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