The Study of Shale Gas Reservoir Theory and Resources Evaluation

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  • 1.School of Geosciences,China University of Petroleum,Qingdao 266580,China; 2.Shengli Oilfield Dongsheng Jinggong Petroleum Development Group Co.Ltd.,Dongying 257000,China

Received date: 2012-07-09

  Revised date: 2012-10-16

  Online published: 2013-06-10

Abstract

Based on the investigation of shale gas at home and abroad,this article systematically studies the basic characteristics of shale gas reservoir,analyzes formation mechanism of shale gas reservoir and its controlling factors.In addition,it discusses the matching identification method and resource assessment methods aiming at the shale gas reservoir′s special accumulation characteristics.Studies show that shale gas reservoir generally has characteristics such as self-generation and self-storage,fine particle size,low porosity and low permeability,fracture development,big reservoir area,continuous distribution,wide formation temperature and burial depth,abnormal formation pressure,low capacity,low recovery ratio,long production period and its occurrence mode is mainly adsorption state.Shale gas reservoir formation has transitional characteristic,with reservoir formation mechanism of both source-contacting gas and conventional natural gas.The type,content and maturity of organic matters,the fracture,porosity and permeability,mineral composition,thickness,humidity,burial depth of shale,as well as the temperature and pressure have certain controlling effect on the formation of shale gas reservoir.Shale gas can be identified qualitatively or quantitatively with core analysis method,geophysical method and new logging techniques such as ECS logging and imaging logging.According to the difference of principles,there are mainly four shale gas resource assessment methods for different geological and data conditions,which are analogy method,statistic method,genetic method,comprehensive analytical method. 〖WT5HZ〗Key words〖WT〗:

Cite this article

WANG Wei-feng,LIU Peng,CHEN Chen,WANG Hui-li,JIANG Shuai,ZHANG Zhi-chao . The Study of Shale Gas Reservoir Theory and Resources Evaluation[J]. Natural Gas Geoscience, 2013 , 24(3) : 429 -438 . DOI: 10.11764/j.issn.1672-1926.2013.03.429

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