二连盆地“洼槽”控油规律与油气勘探前景  

THE LAW OF OIL CONTROLLED BY SUBSAGS AND PROSPECT OF PETROLEUM EXPLORATION IN ERLIAN BASIN

作　　者：张文朝[1] 祝玉衡[1] 姜冬华 高双[1] 曹兰柱[1] 

机构地区：[1]华北石油管理局勘探开发研究院

出　　处：《石油学报》1997年第4期25-31,共7页Acta Petrolei Sinica

摘　　要：依据洼槽的沉积演化、结构类型、生油条件、成藏模式、含油现状和勘探成效，对二连盆地３３个凹陷以洼槽为单元分类评价［１］。初步建立了５种洼槽式样，研究了不同类型洼槽的控油规律。指出洼槽的沉积、构造同性严格控制油气生成和油气藏展布①，断槽继承型洼槽成藏条件最好，勘探成效最高，断超继承型和断槽过渡型大中型洼槽成藏条件较好，其中央断裂构造带和斜坡带是有利聚油带，具有良好的勘探前景，属近期油气勘探和储量接替的主要洼槽。Based on the sedimentary evolution, textural types, tectonic character, oil-generation condition, reser- voir-generation pattern, oil-bearing situation and exploration effect of sub-sags, taking the sub-sags as an element, the thirty-three depressions in Erlian Basin are classified and estimated. Five types of sub-sag models have been set up primarily. The law of oil-gas control in different sags have been studied. Finally it is pointed out that hydrocarbon generation and oil--gas pool, arrangement are strictly controlled by sediment and tectonic character of sub-sags. The sub-sag with fault-sag inheritance is of the best reservoir generation conditions and the highest exploration efficiency. The reservoir generation condition of large and middle sub-sags in the fault-sag onlap inheritance and fault-sag transition are the better ones. The center fracture structural belt and slope zone are the best oil-gas accumulation zone with good exploration prospect, they are the major sub-sags of oil-gas exploration and the reservoir storage in the near future.

关 键 词：盆地 洼槽 油气藏 油气勘探 

分 类 号：P618.130.8[天文地球—矿床学]