冀中拗陷断陷盆地构造岩相带控制油气藏和油气聚集带的形成  

Structure lithofacies belt in fault basin controlling the formation of oil and gas reservoir and accumulation belt(an example from Jizhong depression)

作　　者：杨桂茹[1,2] 崔俊峰[2] 张文朝[2] 李红恩[2] 贺淑萍[2] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]华北油田勘探开发研究院,河北任丘062552

出　　处：《大庆石油学院学报》2009年第2期10-15,47,共7页Journal of Daqing Petroleum Institute

基　　金：国家自然科学基金项目(40472073)

摘　　要：古近纪断陷盆地具有凸凹相间、陡高缓低、起伏多变的地貌景观,结合多物源、窄相带、多种成因类型砂体和规模不一的次级构造带,形成类型多样的构造岩相带,其沉积构造属性和油气成藏条件差别很大,给油气评价和油气勘探带来困难.依据沉积演化、层序地层特征、沉积体系及沉积微相、储集体分布特点、圈闭类型和油气成藏条件等方面,进行精细评价和有利构造岩相带预测.结果表明,冀中古近纪断陷盆地划分为斜坡外带—辫状河三角洲—滩坝砂等8类35个构造岩相带,其中6个Ⅰ类构造岩相带及洼中带、陡翼反转带和坡折带油气成藏条件最好,是华北油田油气勘探的主攻方向.The fault basin in Paleogene has the physiognomy sight of alternating convex and concave,steep low-high relief and volatile ups and downs with multi-sedimentary sourced,narrow facies,multi-genesis sands and sub-structure belts in different scales.These sub-structure belts have a very good matching relationship with different sediment microfacies and different genesis reservoirs,forming various kinds of structure lithofacies belts.Many difficulties have been posed in petroliferous evaluation and exploration in oil and gas because of the much difference in their sedimentary and structure property and the formation condition of oil and gas.So,according to the sediment evolvement,the characteridtics of stratum sequence sediment system and sediment facies,the character of reservoir distribution,trap type and the formation condition of pools.Jizhong Paleogene fault basin was divided into 8 types and 35 structure lithofacies belts such as besides slope-braided river delta-beech bar sand.There are 6 Ⅰtype structure lithofacies belts and the center belt in low-lying reserves belt in steep and slop break has the best reservoirs formation condition.They will be the major explorative direction of Huabei Oilfield.

关 键 词：冀中拗陷 断陷盆地 构造岩相带 油气聚集带 油气评价 勘探方向 

分 类 号：TE121.1[石油与天然气工程—油气勘探]