The Shale Gas Resources Estimation: An Example from Mesozoic Triassic Yanchang Formation Member Chang 7, Ordos Basin
详细信息
- 责任者：Wang Fengqin (Unconventional Natural Gas Resources Research Center ; Xi’an University of Petroleum ; Xi’an 710065 ; China) ; Wang Xiangzeng
- 刊名：Earth Science Frontiers
- 出版年：2013
- 卷期：20(3)
- 关键词：页岩气 ; shale gas ; 资源量 ; resources extent ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.240-246
- 图表：illus., 3 tables, 27 refs.
- 分类号：1003
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
The Mesozoic Triassic Yanchang Formation Chang 7 shale in Ordos Basin is an important hydrocarbon source rock and recently has developed into a very active point in shale gas exploration.The goal of the study is to estimate the shale gas resources.On the basis of 279 wells logging data,geological and geochemical database consisting of 347 core samples from 18 core wells of this area,we conducted an overall analysis of lithology,petrofacies,porosity,total organic carbon(TOC) content,thermal maturity and gas content for the Chang 7 gas shale and studied the response of logging curves to the patterns of gas reservoir.On the basis of the study of the forming conditions of the gas shale the present paper builds up the quantitative relationship between TOC and logging data,including acoustic time logging,natural gamma ray logging and resistivity logging.We use volumetric method to estimate the shale gas resources.The results will lay a foundation for the exploration and exploitation of shale gas in the future.