The Logging Evaluation of Source Rocks of Triassic Yanchang Formation in Chongxin Area, Ordos Basin
详细信息
- 责任者：Yang Shaochun (School of Geosciences ; China University of Petroleum ; Qingdao 266580 ; China) ; Wang Na
- 刊名：Natural Gas Geoscience
- 出版年：2013
- 卷期：24(3)
- 关键词：烃源岩 ; source rocks ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.470-476
- 图表：10 illus., 1 table, 21 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
Core data were commonly used in previous study of source rocks in Chongxin area,Ordos Basin.Constrained by the limited cored wells and samples,the organic carbon distribution pattern of source rocks underground is hard to be characterized.Based on logging data and core analysis and test data,usingΔlogR technology,TOCof the study area can be quantitatively calculated.Compared with traditional methods,correlation of the improvedΔlogRtechnology increases 23%.Satisfactory results have been reached in the study area.Results show Chongxin area has high quality source rocks,with majority TOCcontents ranged from 5%-15%.The eastern region adjacent to center of basin has high TOCcontents,mostly above 5%,while the northwestern region suffered from severe erosion,and source rocks were poorly developed.
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