塔里木盆地库车坳陷盐构造与油气成藏特征

Salt structure and hydrocarbon accumulation of Kuqa Depression
in Tarim Basin

殷进垠

Yin Jinyin

中国石油化工股份有限公司勘探开发研究院， 北京 100083

(Research Institute of Petroleum Exploration and Exploitation, SINOPEC, Beijing 100083, China).

塔里木盆地库车坳陷沉积有较厚的含盐层系，并影响了该地区构造变形和油气聚集成藏过程。大型盐构造主要包括盐枕和盐推覆。受含盐层系和盐构造发育影响，库车坳陷盐上、盐间和盐下具有不同的油气成藏要素和成藏机理，大部分油气都聚集在盐下构造圈闭之中。

Thick salt layers have been deposited in the Kuqa Depression of northern Tarim Basin. Because of its unique properties, the salt exerted serious influence on the structural distortion and hydrocarbon accumulation in this region. The large-scale salt structures mainly involve the salt pillows and salt nappes. Governed by the salt structures, there are different types of forming models of hydrocarbon in the supra-salt, salt and subsalt layers and the majority of oil and gas are located in the subsalt structural traps.