古龙油田葡萄花油层断层封闭性分析  

THE FAULT SEALING ANALYSIS OF THE PUTAOHUA OIL LAYER IN THE GULONG OILFIELD

作　　者：张驰 李涛[1] 胡佳 田淼 ZHANG Chi;LI Tao;HU Jia;TIAN Miao(College of Geosciences,Yangtze University,Wuhan 430100,Hubei,China;Jilin Oilfield Geophysical Exploration Research Institute,Songyuan 138000,Jilin,China;College of Geosciences,China University of Petroleum,Beijing 102249,China)

机构地区：[1]长江大学地球科学学院,湖北武汉430100 [2]吉林油田地球物理勘探研究院,吉林松原138000 [3]中国石油大学地球科学学院,北京102249

出　　处：《地质力学学报》2018年第3期301-308,共8页Journal of Geomechanics

基　　金：国家自然基金项目(41340030);国家科技重大专项(2011ZX05030)

摘　　要：古龙油田断层极为发育,断层的封闭性对研究区油气的运聚起着重要的控制作用,研究断层封闭性有利于预测油气成藏的有利部位。从断层类型、几何特征和埋深对研究区断层封闭性开展地质定性分析,重点从断层两盘岩性对置、泥岩涂抹和应力对断层封闭性进行了定量分析,研究典型断层的封闭演化史。结果表明,古龙油田葡萄花油层一级断层和三级断层封闭性较好,二级断层封闭性一般;平面上鼻状构造断层封闭性好于向斜断层封闭性,其中龙南鼻状构造断层封闭性最好。Faults in the Gulong oilfield are extremely developed. The fault sealing ability plays an important role in controlling the oil and gas migration and accumulation in the study area, so the study of fault sealing is in favor of the prediction of favorable locations for oil and gas accumulation. Qualitative analysis were carried out on the fault sealing ability in the study area from the aspects of fault type, geometric characteristics and buried depth, focusing on the two sides lithology configuration, clay smearing and stress. The sealing evolution history of typical faults was also studied. The results show that the primary and tertiary faults have good sealing ability, while the sealing ability of the secondary faults is ordinary. The fault sealing ability of the nose structure is superior to that of the syncline fault, in which the fault sealing ability of Longnan nose structure is the best.

关 键 词：断层封闭性 岩性对置 泥岩涂抹 古龙油田 

分 类 号：P618.13[天文地球—矿床学] P542[天文地球—地质学]