摘要
松辽盆地北部姚家组二、三段是大庆油田油气勘探开发重要地层之一,但大庆长垣以外的姚家组二、三段已发现油田规模不大、分布零散,油气分布复杂.为了进一步弄清储层与油藏的关系,综合利用岩心、录井、测井、地震及分析化验等资料,对姚家组二、三段的沉积相类型、沉积特征及分布,储集砂体的类型、空间展布、横向连通性等方面进行了研究.结果表明：松辽盆地北部姚家组姚二、三段整体具有多个物源、多种沉积体系、相带呈半环状分布的特点,发育河流、三角洲、湖泊、平原淤积等4种沉积体系,其中以三角洲沉积体系为主;不同沉积相带,其砂体空间展布特征、砂体的宽度、厚度、连通性各不相同,整体分为5类砂体类型;砂体类型决定油气藏的分带性,控制着4大油气聚集带分布.
Member Yaojia 2 and 3 are the major formations of the exploration and development in Daqing Oilfield, but the same found members outside Daqing Placanticline are characterized by small scale, scattered and complicat- ed petroleum distribution. In order to make clear of the relationship between the reservoirs and oil reservoirs, by means of integrating the data of cores, mud logging, well logging, seismic data, chemical analyses ＆ tests and so on, the types of the sedimentary faces, depositional characteristics and distributions, kinds and spacial distributions and connectivity of the reservoir sand bodies, etc. , are figured out for Member Yaojia 2 and 3. The results reveal that the members are featured by multi-provenance, multi-sedimentary-system and half-circle-faces-belt-distribu- tion, and moreover four types of the depositional systems are developed ： fluvial, deltaic, lacustrine, plain aggrada tional systems and so on, among them, the second one is the most principal; for different depositional facies belts, there are different sandbody spread distribution features, sandbody width, thickness and connectivity. In a word, there are five kinds of sandbody types ; these types of the sandbodies determine the zonality of the oil and gas reser- voirs and furthermore control the distributions of four petroleum accumulation belts.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2014年第6期1-8,共8页
Petroleum Geology & Oilfield Development in Daqing
基金
国家科技重大专项课题“资源评价参数选取及天然气资源评价”(2011ZX05007-001)资助
关键词
松辽盆地北部
姚二、三段
砂体类型
油藏
控制作用
沉积相
沉积砂体
North Songliao Basin
Member Yao 2 and 3
sandbody facies
reservoir
controlling action
sedimen-tary facies
depositional/sedimentary sandbody
