塔里木盆地北部构造与油气分布规律

TECTONICS AND OIL-GAS DISTRIBUTION IN THE NORTH TARIM BASIN, NW CHINA

塔里木盆地北部的构造演化和构造格局直接受控于南天山碰撞造山带的形成与演化过程。在此构造演化过程中形成了中生代的库车前陆盆地和新生代的北塔里木前陆盆地。塔里木盆地北部的构造演化和构造格局又控制了该地区的油气分布规律 :秋里塔格带以北的前陆褶皱冲断带 ,即库车坳陷的主体部分是天然气富集区 ;塔北隆起的南部至中央隆起的北部是黑油富集区 ;

The tectonic evolution and framework of northern part of the Tarim Basin was controlled, obviously, by the creation and evolution of the South Tianshan collisional orogenic belt. The oil and gas distribution there was controlled by the tectonic evolution and framework of northern part of the Tarim Basin, where two generations of foreland basin could be distinguished: the Mesozoic Kuqa and Cenozoic North Tarim foreland basins. The gas bearing region was fold and thrust belt north to the Qiulitag belt (including the northern part of Qiulitag belt), namely, the major part of the Kuqa Depression. The southern part of the Tabei (North Tarim) Rise to the northern part of the Central Rise was an oil bearing region. From the southern part of the Qiulitag belt to the northern part of the Tabei Rise was a region of gas and oil co existing. The regularity of the oil and gas distribution in North Tarim was closely related to developing of the foreland basins.