大民屯凹陷西部斜坡带沙四段成藏条件分析  

Analysis of Hydrocarbon Accumulation Condition of the Fourth Section of Shahejie Formation in Western Slope Zone of Damintun Depression

作　　者：尹宏[1] 代宗仰[1] 郭伟[1] 林朋[2] 解宝国[2] 

机构地区：[1]西南石油大学,四川成都610500 [2]辽河油田分公司,辽宁盘锦124010

出　　处：《断块油气田》2006年第6期4-6,共3页Fault-Block Oil & Gas Field

基　　金：四川省重点学科建设项目(SZD0414)资助

摘　　要：通过对大民屯凹陷西部斜坡带沙四段油藏成藏条件的系统分析,认为该段西部斜坡带的有利圈闭是油气聚集的良好场所,同时储集砂体的展布及储集物性是成藏的关键。油源主要来自该段的湖相泥岩;储层为该段低孔低渗的扇三角洲、冲积扇及湖相砂岩。在沉积和构造的共同作用下形成了自生自储的侧变式生储盖组合。Through systematic analysis of hydrocarbon accumulation condition for the fourth section of Shahejie Formation in westen slope zone of Damintun depression,it is considered that the favorable traps of western slops are the well zones of oil and gas accumulation.And the key conditions of reservoir formation are the distribution of the sand body and the physical property of reservoir beds.The source rock is mainly the mud shale and the reservoir beds are tight fan delta,alluvial fan and limnetic sand stone which is all from the fourth section of Shahejie Formation.The source-reservoir-seal assemblage is formed,which is self-generation and self-accumulation controlled by sedimentary and tectonic action.

关 键 词：成藏条件 沙四段 大民屯凹陷 

分 类 号：TE112.1[石油与天然气工程—油气勘探]