China organic-rich shale geologic features and special shale gas production issues

The depositional environment of organic-rich shale and the related tectonic evolution in China are rather different from those in North America. In China, organic-rich shale is not only deposited in marine environment, but also in non-marine environment： marine-continental transitional environment a...

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Bibliographic Details
Published inJournal of Rock Mechanics and Geotechnical Engineering Vol. 6; no. 3; pp. 196 - 207
Main Authors Ju, Yiwen, Wang, Guochang, Bu, Hongling, Li, Qingguang, Yan, Zhifeng
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2014
Elsevier
Subjects
Mineral composition
Organic matters
Organic-rich shale
Production
Tectonic deformation
中国
地质特征
有机质
沉积环境
海洋环境
特征和
生产
页岩气
Organic matters
Organic-rich shale
Mineral composition
Tectonic deformation
Production
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Summary:The depositional environment of organic-rich shale and the related tectonic evolution in China are rather different from those in North America. In China, organic-rich shale is not only deposited in marine environment, but also in non-marine environment： marine-continental transitional environment and lacustrine environment. Through analyzing large amount of outcrops and well cores, the geologic features of organic-rich shale, including mineral composition, organic matter richness and type, and li- thology stratigraphy, were analyzed, indicating very special characteristics. Meanwhile, the more complex and active tectonic movements in China lead to strong deformation and erosion of organic-rich shale, well-development of fractures and faults, and higher thermal maturity and serious heterogeneity. Co-existence of shale gas, tight sand gas, and coal bed methane （CBM） proposes a new topic： whether it is possible to co-produce these gases to reduce cost. Based on the geologic features, the primary pro- duction issues of shale gas in China were discussed with suggestions.
Bibliography:Organic-rich shaleMineral compositionOrganic mattersTectonic deformationProduction
42-1801/O3
The depositional environment of organic-rich shale and the related tectonic evolution in China are rather different from those in North America. In China, organic-rich shale is not only deposited in marine environment, but also in non-marine environment： marine-continental transitional environment and lacustrine environment. Through analyzing large amount of outcrops and well cores, the geologic features of organic-rich shale, including mineral composition, organic matter richness and type, and li- thology stratigraphy, were analyzed, indicating very special characteristics. Meanwhile, the more complex and active tectonic movements in China lead to strong deformation and erosion of organic-rich shale, well-development of fractures and faults, and higher thermal maturity and serious heterogeneity. Co-existence of shale gas, tight sand gas, and coal bed methane （CBM） proposes a new topic： whether it is possible to co-produce these gases to reduce cost. Based on the geologic features, the primary pro- duction issues of shale gas in China were discussed with suggestions.
ISSN:1674-7755
DOI:10.1016/j.jrmge.2014.03.002