塔里木盆地沙雅、卡塔克和巴楚隆起油气成藏主控因素对比与评价

沙雅、卡塔克和巴楚隆起是塔里木盆地油气勘探的重点地区,截至2006年底提交的探明油气地质储量占整个盆地探明储量的66.78%,但3个隆起探明油气地质储量规模存在显著差异。有效供烃范围、优质储层的发育和空间展布、构造演化历史尤其是后期构造活动性的差异是导致3个隆起储量规模显著不同的主要原因。根据3个隆起油气成藏主控因素的对比分析,沙雅隆起油气成藏条件最好、卡塔克隆起次之、巴楚隆起相对较差。

Comparison and evaluation of main factors controlling hydrocarbon accumulation in the Shaya,the Katake and the Bachu Uplift,the Tarim Basin

As the major exploration targets in the Tarim Basin,three uplifts,namely,the Shaya,the Katake and the Bachu Uplift,contained an accumulative proven geologic reserves which account for 66.78 % of the basin's total by the end of 2006.However,they varied greatly in the scale of their proven geologic reserves-a phenomenon caused by differences in effective source rocks,development and distribution of high-quality reservoirs,and tectonic evolution history(especially late tectonic activities).Comparative analysis on main factors controlling hydrocarbon accumulation in these uplifts revealed that the Shaya Uplift had the best condition for hydrocarbon accumulation,the Katake Uplift had a less favorable accumulation environment,and the Bachu Uplift had the worst.