Major Factors Controlling the Accumulation and High Productivity of Marine Shale Gas and Prospect Forecast in Southern China
Zhai Gangyi
Wang Yufang
Bao Shujing
Guo Tianxu
Zhou Zhi
Chen Xianglin
Wang Jinzhu
Abstract：Sichuan basin has been taking the lead in China for the shale gas business development in recent years.Ordovician Wufeng Formation-Silurian Longmaxi Formation has been the main layer of marine shale gas development in the south.Based on the analysis of shale gas deposition and distribution, tectonic evolution, tectonic patterns and preservation, shale reservoir characteristics, the main controlling factors on enrichment and high-production of marine shale gas are summarized.The rich organic shale formed in deep shelf sedimentary environment is taken of the main factor as the material basis.The time and style of tectonic uplift are the key factors of shale gas accumulation and preservation.Three types of shale gas tectonic styles are determined, including intact type, residual type and destructive type.Overpressure of formation is a necessary condition of high shale gas production.In this paper the prospect of shale gas in South China has been forecasted.Edges of paleo-highs and Yunnan-Guizhou-Guangxi region are predicted as the favorable areas for future exploration and development of shale gas.
Keywords：shale gasenrichmenthigh-productionmain controlling factortectonic stylestorage conditionspetroleum geology
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 1057-1068 )