Influence of Structure of Northwest Guizhou Area on Preservation of Lower Cambrian Shale Gas Reservoirs

doi:10.11885/j.issn.16745086.2015.01.08.02

Abstract

Abstract: Tectonic conditions of Northwest Guizhouare highly complex. The preservation conditions of shale gas reservoirs in Lower Cambrian Niutitang Formation are studied and the favorable preservation condition areas of the shale gas reservoirs are divided with reference to shale gas reservoirs' preservation condition evaluation index. Combined with the tectonic evolution, the development and distribution characteristics of folds and faults, the shale sedimentary environment and thickness, the organic carbon content and the organic matter maturity, etc. in Northwest, Guizhou. Preservation conditions of shale gas reservoirs have important reference values in other areas. The folds and faults are highly developed in Northwest,Guizhou. The folds are mainly trough-like folds,and the faults have four groups of fault systems at different stages and trends. The preservation conditions of shale gas reservoirs are destroyed at different degrees by the above reasons. The favorable preservation condition areas of the shale gas reservoirs are mainly distributed in most parts of the Dafang and Qianxi County in Central of Northwest Guizhou, and some parts of the Tongzi County and Renhuai City in the northeast of Northwest Guizhou.

Key words: northwest Guizhou, Niutitang Formation, shale gas reservoirs, structural characteristics, preservation condition

CLC Number:

TE122

FU Jinglong, DING Wenlong, ZENG Weite, HE Jianhua, WANG Zhe. Influence of Structure of Northwest Guizhou Area on Preservation of Lower Cambrian Shale Gas Reservoirs[J]. 西南石油大学学报(自然科学版), 2016, 38(5): 22-32.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.16745086.2015.01.08.02

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2016/V38/I5/22

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