吐哈盆地葡萄沟地区储层预测及成藏特征探讨

Discussion on reservoir prediction and reservoir-accumulating feature in Putaogou area of Tu-Ha basin

葡萄沟地区是吐哈盆地油气最为富集的有利区带之一。综合研究表明,葡萄沟地区主要目的层七克台组为一套近西物源的辫状河三角洲沉积体系,发育有水下分流河道和滩砂坝等有利储集相带,七克台组油藏类型以背斜、断背斜等构造油藏为主,上油藏以边水层状油藏为主,下油藏以底水块状油藏为主;三间房组油藏以构造—岩性油藏为主。古构造与现今构造的良好配置、有利的储集相带以及燕山期形成具封堵性的断层是成藏的主控因素。火焰山断层上盘南部背斜带和北部斜坡带分别是下一步构造圈闭和构造—岩性圈闭的有利勘探方向。

Putaogou area is one of the benefit blocks enriching oil and gas in Tu-Ha basin. Integrative research showed that the Qiketai Formation the major objective horizon in Putaogou area is a set of braid river delta sedimentary system that the material source comes from near-western area, developing benefit reserving facies such as underwater branching channel and beach sand bar, and Qiketai Formation reservoir type mainly is structural reservoir such as anticline and faulted anticline: upper reservoir mainly is...