江桥地区油藏地质特征与油气成藏主控因素  

The geological characteristics and master control factors of hydrocarbon accumulation in Jiangqiao area

作　　者：姚勇[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2008年第4期39-41,共3页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技攻关项目"中国东部岩性油气藏地质评价和关键技术研究"(2003BA613-01-02)资助

摘　　要：江桥地区位于松辽盆地北部西斜坡带中段,油藏主要以微幅度构造、岩性和地层-岩性油气藏为主。研究区油层主要分布在萨二、三油层和高台子油层顶部,厚度较大,储层物性较好,主要为高孔高渗型。地层为正常温压系统,地层流体为稠油和湿气。油气成藏主要受圈闭与运移通道控制。油气主要聚集在岩性上倾尖灭、河道透镜状砂体、构造-岩性3种类型的圈闭中,以远距离油气运移为主,运移的主要通道是高台子油层顶部的区域不整合面与储层中的砂体。Jiangqiao area is in the middle of the west slope in north Songliao Basin. The oil pool is mainly consisted of little amplitude structures, lithological and stratigraphic-lithological reservoirs. The target stratum distributes at the top of Gaotaizi oil bed and S2 ＋3 oil layer. The oil layer is thicker with better physical property and high porosit） and permeability. The formation is in normal thermobaric system. The formation fluids include heavy crude and humid gas. The main controlling factors for hydrocarbon accumulation are traps and migration pathways. The oil and gas are mainly accumulated in three types of traps ： lithological updip pinchout, river channel lenticular sand body and structure-lithological trap. In this area, long range fluid migration takes the main role, and the main migration pathways are regional unconformity at the top of Gaotaizi oil layer and sand body in reservoirs.

关 键 词：油气运移 反转构造 成藏主控因素 江桥地区 松辽盆地 

分 类 号：TE122.222[石油与天然气工程—油气勘探]