塔里木盆地大油气田勘探方向

Targets for Exploration of Giant Oil-Gas Fields in Tarim Basin

塔里木盆地具优越的构造背景,多旋回沉积体系、多构造体系、多时代含油气体系、多期成藏的特点;自1984年沙参2井实现油气重大突破20年来,塔里木盆地已发现30个油气田(藏),其中大油气田4个。现已查明盆地有4个成藏期:晚加里东—早海西运动期,晚海西运动期,印支—燕山运动期,喜马拉雅运动期。台盆区古隆起、古斜坡、断裂带、区域不整合面、前陆盆地的断褶带、斜坡带以及逆掩带和各类扭动构造带是今后油气勘探主要方向和耙区。

Tarim basin is of superior structural setting, multi-cyclic depositional system, multi-structural system, multi-era petroleum system and multi-epoch petroleum accumulations which are found in late Caledonian-early Hercynian, late Hercynian, Indosinian-Yanshan and Himalayan movements. A major breakthrough for oil-gas exploration was made in Shacan-2 Well since 1984, more than 30 fields or reservoirs have been discovered, of which 4 belong to giant fields. It is concluded that the major targets for further hydrocarbon prospecting are the paleo-uplift, paleo-slope, fault belt, regional unconformity in platform-basin area and the bruchfalten zone, slope zone in foreland basin as well as overthrust fault belt and various shear structural systems.