塔里木盆地三叠－侏罗系储集体成因类型与分布  

Types and Distribution of Triassic-Jurassic Reserviors in Tarim Basin

作　　者：林小云[1] 吴东胜[1] 王正允[1] 王方平 

机构地区：[1]江汉石油学院石油地质系

出　　处：《江汉石油学院学报》1996年第2期13-18,共6页Journal of Jianghan Petroleum Institute

基　　金：国家"八五"重点科技攻关课题

摘　　要：塔里木盆地北部三叠系为一套辫状三角洲（夹扇三角洲）－湖泊沉积体系、南部为正常三角洲－湖泊沉积体系；而侏罗系为宽浅湖盆中的河流－滨钱湖沉积体系。塔里木盆地三叠－侏罗系储集体类型包括辫状三角洲砂岩体、扇三角洲砂岩体、三角洲砂岩体、河流砂岩体和滨浅湖砂岩体等。辫状三角洲砂岩体或扇三角洲砂岩体分布在北部陡坡，厚度向南增大；三角洲砂岩体分布在盆地南部，厚度向拗陷边缘减小；滨浅湖砂岩体和河流砂岩体则分布在环湖中心及盆地边缘。Triassic system in Tarim basin consists of a set of fan delta or braided delta-lacustrine depositional system in the north part,and a normal delta - lacustrine depositional system in the south part,while Jurassic system in Tarim basin is composed of fluvial and coastal-shallow lacustrine depositional system in a wide and shallow lake. The types of Triassic-Jurassic reservoirs include braided delta, fan delta, fluvial and coastalshallow lacustrine sandbodies. Amomg them, the braided- or fan-delta sandbodies are found on the steeper slope of the northern basin with thickness increasing southwards,while the normal sandbodies occur in the south part of the basin with thickness decreasing toward depression margin. The coastal-shallow lacustrine and fluvial sandbodies are distributed around the lake's center and along the basin's margin.

关 键 词：储集层 中生代 塔里木盆地 油气层 

分 类 号：P618.130.2[天文地球—矿床学]