摘要
莱州湾凹陷构造复杂,断层发育,断层封闭性对研究区油气的运移和聚集起着重要的控制作用。首先从断层的性质、与地层倾角组合关系、倾角、断距和埋深等方面对断层封闭性进行了定性评价;然后从岩性对置、泥岩涂抹和应力3个方面进行常规断层封闭性定量评价;最后用模糊综合评判法综合评价断层封闭性。研究结果表明,倾角较小的断层封闭性优于倾角较大的断层,位于盐背斜带上部的断层封闭性优于其他断层,同向式断层封闭性一般或较差,反向式断层封闭性较好。常规断层封闭性定量分析方法的结果和模糊综合评判法分析基本一致,断层封闭性评价结果与现有井钻探结果匹配良好。
The tectonics is complex and the fault is developed in Laizhou Bay Sag.The fault sealing plays an important role in controlling the migration and accumulation of oil and gas resources.Firstly,this paper evaluates fault sealing qualitatively based on the fault type,the relationship with stratum dip,fault dip,fault displacement and depth of faults.Then,the fault sealing is evaluated quantitatively with conventional methods according to the two side lithology configuration,clay smearing and stress.Finally,the fault sealing is evaluated by fuzzy comprehensive judgment.The results show that the fault sealing with smaller dip is superior to the fault with bigger dip,the fault sealing in salt anticline is superior to other faults,and the coaxial fault sealing is common or poor,while the reverse fault sealing is good.The result of quantitative analysis with conventional methods is consistent with fuzzy comprehensive judgment in the evaluation of fault sealing,which matches the existing drilling results well.
作者
张驰
杨波
胡忠贵
李涛
杨海风
高鹤
ZHANG Chi;YANG Bo;HU Zhonggui;LI Tao;YANG Haifeng;GAO He(College of Geosciences,Yangtze University,Wuhan 430100,China;Wuxi Research Institute of Petroleum Geology,Petroleum Exploration and Production Research Institute,SINOPEC,Wuxi 214126,China;Tianjin Branch of CNOOC Ltd.,Tianjin 300459,China)
出处
《断块油气田》
CAS
CSCD
北大核心
2020年第6期734-738,共5页
Fault-Block Oil & Gas Field
基金
国家科技重大专项课题“渤海油田加密调整及提高采收率油藏工程技术示范”(2016ZX05058-001)。
关键词
断层封闭性
岩性对置
泥岩涂抹
模糊综合评判法
莱州湾凹陷
fault sealing
lithological configuration
clay smearing
fuzzy synthesize judgment
Laizhou Bay Sag
