塔里木盆地北部地区油气富集规律及成藏模型  

ENRICHING REGULARITY AND POOL-FORMING MODEL OF HYDROCARBON IN NORTH TARIM REGION

作　　者：何向阳 演怀玉[2] 

机构地区：[1]地质矿产部西北石油地质局,乌鲁木齐830011 [2]地质矿产部石油地质研究所,北京100083

出　　处：《石油与天然气地质》1992年第3期303-313,共11页Oil & Gas Geology

摘　　要：塔北为大型古隆起控制油气区域性聚集,它与生油坳陷紧邻,油气源充沛;古隆起上的大型凸起、重叠复合构造、不整合面、断裂、地层楔形体,对油气运移、聚集和分布有不同的控制作用。沙雅隆起具有纵向上的三层结构特征和横向上的三大油气聚集领域。Shaya uplift in North Tarim Region is situated between Amang and Kuqa oil-generating depressions with rich hydrocarbon source.Oil and gas accumulation is con-trolledby the large embossment,stratigraphic wedges,superposition structures and localstructures developed on the uplift.The pool-forming model is considered to be:1.Three-layer structure in vertical.The upper one is composed of Meso-Cenozoicsandstone and characterized with secondary accumulation;the middle one is composed ofMiddle-Upper Paleozoic sandstone in wedge-shape,and characterized with primary andsecondary accumulation;the lower one is composed of percolation bed and interior layer ofweathered crust in Lower Paleozoic carbonate rocks,and characterized with primary accu-mulation. 2.Three accumulation fields in lateral including(1)the superimposed area of upperand lower structural layers in the north part of Shaya uplift;(2)the superimposed areaof Upper-Middle Paleozoic wedge between two unconformities in the margin of the uplift;(3)three completely superimposed area in the south part of the uplift.

关 键 词：构造圈闭 油气藏类型 

分 类 号：P618.130.2[天文地球—矿床学]