新开—董家岗斜坡带冲积扇体成藏特征  

Reservoir forming characteristics on the alluvial fan of Xinkai-Dongjiagang slope belt

作　　者：孙卉[1] 

机构地区：[1]中油辽河油田分公司,辽宁盘锦124010

出　　处：《特种油气藏》2005年第5期35-37,共3页Special Oil & Gas Reservoirs

摘　　要：从斜坡带冲积扇体发育的构造、沉积背景、扇体展布及储集特征等几方面入手,对冲积扇体成藏特征进行了深入的分析,总结了控制本区油气藏分布的关键因素。指出:古地貌形态、断裂活动期次、强度及坡折带的发育控制了扇体的数量、规模与迁移方向。扇体成藏主要取决于扇体与断层的组合、配置方式、有利相带的展布及砂砾体上倾方向上的有效遮挡。区内低位期冲积扇体尤其是位于坡折带下方的扇体是油气聚集的有利部位。This paper analyzes reservoir forming characteristics on alluvial fan and summarizes the key factors controlling the distribution of reservoirs in this area by starting with the structure,sedimentary setting,distribution and reservoir characteristics of slope alluvial fan.It is pointed out that,the number,scale and migration direction of fans were controlled by palaeogeomorphology,periods and strength of fault movement,and the development of slope-bend belt.Fan reservoir forming mainly depended on the combination and configuration of fans and faults,the distribution of favorable phases,and the effective screen of glutenite in updip direction.The lowstand alluvial fans,especially the fans below the slope-bend belt,are favorable positions of oil and gas accumulation.

关 键 词：冲积扇 斜坡带 古地貌 成藏特征 新开-董家岗地区 

分 类 号：TE122.3[石油与天然气工程—油气勘探]