Abstract: Because of the great change in thickness of the overlying gyprock and the high density drilling fluid in Kuqa depression, it is very difficult to define the boundary stratotype.

• 摘要: 在库车坳陷天然气勘探中,由于目的层段上覆膏盐岩厚度变化大、钻井液密度高使得在该区天然气勘探中卡取层位、发现气层十分困难。