塔里木盆地主要古隆起的形成、演化及控油气地质条件分析

古隆起的分布及其形成演化对油气的聚集具有决定作用。综合利用地震、测井和分析测试资料，对塔里木盆地不同地质时期的古隆起分布及其演化进行了分析，对塔中、塔北和巴楚3个古隆起的性质、演化特征及油气成藏地质条件进行了对比，指出油气关键成藏期的古隆起及其后期的发展演化影响着盆地的地质结构，制约着油气的聚集与分布，认为由此决定的不同时期的成藏主控因素和油气聚集区显著不同，例如加里东运动晚期，塔北隆起和塔中隆起是油气聚集的有利区；海西运动晚期，塔北隆起、巴楚隆起、塔中隆起和塔东隆起及其斜坡带是油气的有利聚集区；喜马拉雅运动期，巴楚隆起及其围斜部位则是主要的油气勘探有利区，塔东地区也值得重视。

Formation, Evolution and Hydrocarbon-Controlling Geological Conditions of Major Paleohighs, Tarim Basin

The distribution, formation and evolution of paleohighs play a decisive role for hydrocarbon accumulation. Based on the seismic, log and test data, this paper systemically studies the distribution and evolution of different geological paleohighs in Tarim Basin. Through the comprehensive comparison of the properties and evolutional characteristics and hydrocarbon geological conditions of three paleohighs (Tazhong, Tabei and Bachu), it analyzes the favorable exploration domains during different periods, and indicates that the paleohigh in the crucial hydrocarbon\|accumulation period and its later evolution impact on the basin’s geological structure and restrict the hydrocarbon accumulation and distribution. These lead to different main controlling factors of hydrocarbons and different hydrocarbon accumulation zones in different periods. Tabei and Tazhong are the favorable accumulation areas in the late Caledonian period. These highs and their slopes of Tabei, Bachu, Tazhong, Tadong are the favorable accumulation areas in the late Hercynian period. In the Himalayan period, Bachu high and its ramp are the main favorable areas for exploration, and Tadong also deserves attention.