Study on the Method of Stratigraphic Accurate Correlation and Subdivision in Zhuangnan Fault Zone of Zhanhua Sag, Jiyang Depression
详细信息
- 责任者：Chen Qinghua (School of Geosciences ; China University of Petroleum ; Qingdao 266580 ; China) ; Wang Jing
- 刊名：Journal of Earth Sciences and Environment
- 出版年：2013
- 卷期：35(2)
- 关键词：砂岩储集层 ; sandstone reservoirs ; 济阳坳陷 ; Jiyang Depression
- 页码：p.75-80
- 图表：illus., 1 table, 23 refs.
- 分类号：1003
- issnNo：ISSN1672-6561
- isbnNo：CN61-1423/P
摘要
Stratigraphic accurate correlation and subdivision are very difficult because of the complicated faults in Zhuangnan fault zone of Zhanhua sag,Jiyang depression.According to the formers’ research,a method of stratigraphic accurate correlation and subdivision in fault zone was first proposed.The method mainly included step-by-step subdivision,partition correlation and unified all-region.For step-by-step subdivision,the subdivision was from oil layer group to sand group,then to single layer,and later to single sandbody in vertical,and the selection of auxiliary marker formation and correlation marker of adjacent wells was the key;for partition correlation,the distribution of correlation marker of adjacent wells was certain and overlapping,multi-marker control principle was used for partition correlation,and finally unified all-region correlation was carried out.The innovation points of the method included the discovery and application of mudstone auxiliary marker formation,re-definition and classification of correlation marker of adjacent wells systematically,and the first introduction on multi-marker integrated overlapping application correlation method.Finally,the method applied on stratigraphic correlation and subdivision in Zhuangnan fault zone was effective,and solved the problem including the simplemethod and the lower accuracy of correlation in the old correlation scheme,and improved the stratigraphic accurate correlation and subdivision in similar complex fault-block areas.