松辽盆地七棵树油田沙河子组层序地层格架与油气的关系  

Relationship between Sequence Stratigraphic Framework and Petroleum of Shahezi Formation in Qikeshu Oilfield

作　　者：陈贤良[1] 纪友亮[1] 樊太亮[2] 王宏语[2] 郝悦娟[2] 聂文彬[2] 闫宁[3] 

机构地区：[1]中国石油大学油气资源与探测国家重点实验室,北京102249 [2]中国地质大学能源学院,北京100083 [3]中国石化江汉油田分公司物探研究院,湖北武汉430035

出　　处：《现代地质》2013年第4期968-977,共10页Geoscience

基　　金：中国石油化工股份有限公司东北油气分公司基础研究项目(G1200-09-WT-045)

摘　　要：应用层序地层学和沉积学原理及方法,建立松辽盆地七棵树油田沙河子组层序地层格架,并划分沉积相,识别了沉积相在纵向上的演化规律和横向上的展布特征。同时,在上述研究基础之上分析层序地层格架内砂体的展布特征和油气的分布规律,并预测了研究区岩性油气藏的类型及分布。研究结果表明:沙河子组为一个三级层序,内部可划分出2个四级层序,其整体演化经历了一个由快速退积到缓慢进积的过程。受构造沉降、湖平面变化和沉积物供给的影响,砂体主要发育在四级层序的基准面下降半旋回,是寻找岩性透镜体油气藏和岩性上倾尖灭油气藏的有利部位。On the basis of the sequence stratigraphy and sedimentology,the sequence stratigraphic framework and sedimentary facies of Shahezi Formation in Qikeshu oilfield,Songliao Basin were established,and the distribution characteristics of sandstone and the rules of hydrocarbon accumulation within the sequence stratigraphic framework were analyzed,then the type and distribution of lithologic reservoir were predicted. The results show that Shahezi Formation is a third-order sequence and can be subdivided into two fourth-order sequences,experiencing an evolution process from rapid regression to slow transgression. The development of sand bodies is controlled by the tectonic effect,lake-level change and sediment supply,and the sand bodies mainly grow in the descending base-level cycles of the fourth-order sequence,which are favorable exploration zones for lithologic reservoirs.

关 键 词：层序地层格架 沙河子组 七棵树油田 

分 类 号：TE121.3[石油与天然气工程—油气勘探]