廊固凹陷旧州断层封闭性研究  

Study on sealing property of Jiuzhou fault in Langgu depression

作　　者：邓婷婷[1] 查明[1] 高长海[1] 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580

出　　处：《石油地质与工程》2013年第4期9-12,145,共4页Petroleum Geology and Engineering

基　　金：国家科技重大专项"重点盆地地层油气藏成藏机理与分布规律"(2011ZX05001-001-006)

摘　　要：大柳泉构造带是廊固凹陷的大型鼻状构造带,其中部的旧州断层控制了该地区的油气运移和分布。依据断层活动性、断层两盘的岩性配置关系、断层泥比率、断裂充填物泥质含量和断面力学特征等指标,对旧州断层的封闭性进行了综合分析。结果表明:旧州断层沙三中到东营期活动强烈,与研究区的油气运移成藏期相匹配,为沙三中油气藏的形成提供了有效的运移通道,整体上具"下好上差"的特征,且北部地区封闭性要好于南部,从而造成了南北成藏的差异性。DaLiuquan structure zone of Langgu Depression is a large nose structure zone.The Jiuzhou fault , in the middle of DaLiuquan structure zone , plays an important role in the migration and accumulation of oil and gas.The indicator of synthetic evaluation of Jiuzhou fault sealing property includes fault activity , lithologic association on two sides of fault , mudstone smearing , rate of mud in fault stuff and the stress of fracture surface analysis.The results show that Jiuzhou fault starts and grows intensely in the third Shahejie and Dongying sedimentary period.It fits to the hydrocarbon migration periods in this area.So the fault could become the pathway of hydrocarbon migration for oil and gas reservoir of the middle third Shahejie formation.The feature of Jiuzhou fault sealing is'lower good and upper bad'on the whole , and northern region is better than the southern , which due to the difference of north and south reservoir.

关 键 词：廊固凹陷 旧州断层 断层封闭性 综合评价 

分 类 号：TE111.2[石油与天然气工程—油气勘探]