东濮凹陷“相势”特征及隐蔽油气藏勘探方向分析  

Study on characteristic of phase-potential and subtle pool exploration in Dongpu depression

作　　者：许书堂[1] 

机构地区：[1]中国石化中原油田分公司勘探开发科学研究院,河南濮阳457001

出　　处：《石油地质与工程》2010年第5期1-4,共4页Petroleum Geology and Engineering

基　　金：中国石油天然气集团公司科技攻关项目"东濮凹陷隐蔽油气藏成藏规律及勘探目标研究"(P04092)的部分成果

摘　　要：从"相势控藏"理论出发,分析了东濮凹陷的相势特征,找出了相势耦合关系式。认为东濮凹陷油气成藏符合相势控藏的规律,处于压力封存箱内的前梨园洼陷及柳屯-海通集洼陷是隐蔽油气藏勘探的重要方向。洼陷内普遍发育的异常高压为油气的运移提供了充足的动力,"势"条件优越;洼陷内发育不同类型的砂体,砂岩中发育异常高孔隙,储集性能良好,这些砂体成为形成岩性油气藏的良好载体,"相"条件适宜;且洼陷内烃源岩生油品质好,处于生油高峰期内,油气资源丰富,容易形成各类自生自储的岩性油气藏。This paper analyzes phase and potential characteristic of Dongpu depression based on the phase-potential reservoir control theory and finds out coupling dependence between phase and potential.It is thought that reservoir formation of Dongpu depression accords with phase-potential reservoir control law.Qianliyuan sub-depression and Liutun-Hai-tongji sub-depression within the pressure compartment point to the reservoir exploration direction.Abnormal high pressure developed in the compartmetn provides enough power for hydrocarbon migration.The condition for poten-tial is preferable.Different types sandbodies were developed in the sub-depression.Abnormal high porosity was also de-veloped in the sandstone,forming good carriers for lithologic reservoirs.The condition for phase is suitable and hydrocar-bon source rock in the sub-depression is also of good quali-ty being in the period of oil generation peak,which is easy to form various types of self-generation and self-preserving lithologic reservoirs.

关 键 词：东濮洼陷 相势控藏 隐蔽油气藏 压力封存箱 

分 类 号：TE112.322[石油与天然气工程—油气勘探]