摘要
G4-188区块位于加蓬海岸盆地北次盆,WZ地区为一盐岩遮挡鼻状构造,构造位于整体构造高部位。钻遇地层有上白垩统的Azile、Anguille、PC和PG组多套地层。油气层主要分布在UPC组、LPC组和Anguille组,地层纵向上发育多套油气水系统,横向上地层变化剧烈,砂体展布不连续。通过各组段地层测井响应特征,结合录井以及测试资料,分析了油气层测井响应特征。根据岩心物性分析资料,对孔隙度和渗透率进行了标定,初步建立了WZ构造带油气层测井解释标准。
G4-188 block is located in the north sub-basin of Gabon coast basin. WZ structural belt is a salt rock sheltering nose structure that located in the high position of whole structure. In drilling stratas, there are several formations of Azile, Anguille, PC and PG groups of upper cretaceous. Hydrocarbon reservoirs mainly distribute in UPC group, LPC group and Anguille group. Sever- al oil-gas-water systems develop vertically in the formations and stratas change sharply horizontally with discontinuous distribu- tion of sandbody. Based on logging response characteristics of the formations of each group and the datas of logging and testing, the logging response characteristics of oil and gas reservoirs were analyzed. According to the analysis data of core physical property, po- rosity and permeability were calibrated. As a result, logging interpretation standards for the hydrocarbon reservoirs of WZ structural belt were preliminarily established.
出处
《油气藏评价与开发》
2011年第6期29-34,共6页
Petroleum Reservoir Evaluation and Development
关键词
WZ构造
鼻状构造
油气层
测井
测井响应
储层评价
WZ structure, nose structure, hydrocarbon formation, well logging, logging response, reservoir evaluation
