Genetic mechanism and identification methods of Chang 6 low resistivity reservoir in Zhidan and Ansai area, Ordos Basin
Online published: 2013-06-01
Supported by
陕西省自然科学基础研究项目“陕北中生界延长组特低渗低阻油层识别与评价”（编号：2010JM5003）资助
Low resistivity reservoirs developed well in Mesozoic Yanchang Formation in norhtern Shanxi, with wide distribution and tremendous resource potential. But because of its complex genetic mechanism and diversified forms, the traditional method is difficult to identify them. Combining with the actual oilfield production practice, according to logging, well logging, experimental analysis and production test, with the main producing oil group as the research object, based on the comprehensive geological research, this paper studied the genetic mechanism of Chang 6 low resistivity reservoir in Zhidan and Ansai area, and discussed its identification methods. The results show that complex pore structure, clay with conductive ability and high water salinity are the main causes for Chang 6 low resistivity reservoir, and the methods of
crossplot, logging curve overlapping and adjacent water layer can be used to improve the recognition accuracy of the low resistivity reservoir in the study area.
WANG Shujiang , YONG Xueshan , WANG Yuchao , WANG Xiao , GAO Jianhu . Genetic mechanism and identification methods of Chang 6 low resistivity reservoir in Zhidan and Ansai area, Ordos Basin[J]. Lithologic Reservoirs, 2013 , 25(3) : 106 -111 . DOI: 10.3969/j.issn.1673-8926.2013.03.019
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