塔里木盆地台盆区古生界油气输导体系与勘探方向

doi:10.11743/ogg20060504

摘要/Abstract

摘要：

古生界是塔里木盆地的主要勘探目的层,通过分析古生界油气输导层、不整合面和输导型断裂分布特征,认为台盆区奥陶系碳酸盐岩输导层、泥盆系砂岩输导层、加里东期和海西期的不整合面和断裂组成了良好的输导体系;划分了海西晚期主成藏期的中、下奥陶统顶面油气运聚单元,根据运聚单元与输导体系差异、有效烃源岩热演化差异在空间上的配置关系,对油气运聚单元的运聚效率进行了综合评价,进而提出塔北沙西凸起-阿克库勒凸起、塔中Ⅰ号断裂带和塔中10-塔中1井一带是台盆区大型油气田的勘探方向,中央隆起两个倾没端、满西地区、阿瓦提坳陷北部是值得高度重视的3个勘探领域。

关键词: 输导系统, 运聚单元, 大型油气田, 勘探方向, 塔里木盆地台盆区

Abstract:

The Paleozoic is the main exploration target in Tarim basin.An analyze on the distribtuion of the hydrocarbon carrier beds,unconformity surfaces,and conductive faults in the Paleozoic,shows that a good carrier system is formed in the platform-basin transitional area by the Ordovician carbonate carrier bed,Devonian sandstone bed,and the Caledonian and Hercynian unconformity surfaces and faults.The units of hydrocarbon migration and accumulation are also recognized on top of the Middle-Lower Ordovician for the main reservoiring period in the late Hercynian.Based on the spatial arrangement of the migration and accumulation units,the carrier system and the thermal evolution of effective source rocks,a comprehensive evaluation is carried out on the migration and accumulation efficiency of the units.It is further proposed that the Shaxi-Akekule swell,Taozhong I fault zone,and area surrounding well Taozhong-10 and Tazhong-1,be the future exploration targets in the platform-basin transitional area,and three areas,namely the two plunges of the central uplift,the Manxi area,and the northern Awati depression,be worth of much attention during the exploration.

Key words: carrier system, migration and accumulation unit, large oil and gas fields, exploration direction, plat-form-basin transitional area in Tarim basin

中图分类号:

TE112.3

张达景,王英民,肖志高,等. 塔里木盆地台盆区古生界油气输导体系与勘探方向[J]. 石油与天然气地质, 2006, 27(5): 604-613. doi: 10.11743/ogg20060504 Zhang Dajing,Wang Yingming,Xiao Zhigao,et al. Paleozoic Carrier system in platform-basin transitional area of Tarim basin and future exploration[J]. Oil & Gas Geology, 2006, 27(5): 604-613. doi: 10.11743/ogg20060504

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