摘要
塔里木盆地北部三叠系辫状三角洲砂体是本区主要的油气藏宿主储层之一，按其沉积特征可划分为前缘亚相、平原亚相．根据野外典型剖面的类比及钻井岩芯的详细分析，阿克库勒—达里亚地区的辨状三角洲砂体可划分出6组界面和9个构型单元。按其特征和规模其非均质性可分为4类级别，它们不同程度地对油气的富集起着控制作用，造成了储层沉积体在纵、横向上含油气性能的差异。
The Sand body of Triassic braided delta in northwest Tarim basin is one of the major hosting reser- voirs of oil/gas pools in this area, which can be divided into a frontal subfacies and plain subfacies accord- ing to their depositional features. Based on the analogy of typical sections in field and detailed analyses of drilling cores, six classes of bounding surface and nine architectural units are identified for the sand body of braided delta in Akekule--Daliya region. Furthermore, in view of the features and scale, the hetero-geneity can be classified into four classes, whieh will control the enrichment of oil/gas to different extents, resulting in a petroliferous difference in the sedimentary reservoir bodies either vertically, laterally or up- wards.
出处
《石油实验地质》
CAS
CSCD
北大核心
1997年第3期201-208,共8页
Petroleum Geology & Experiment
基金
国控85-101-04-01专题
