摘要：
库车坳陷的第三系盐膏质区域盖层具有厚度大、分布广、岩性致密、突破压力高、地层压力也很高的特点，属于封闭性特别强的区域盖层；在坳陷的成藏系统中，起着应变分隔带、流体压力屏障、油气成藏机制分界线的作用；在其上下出现了两种成藏模式—克拉苏模式和大宛齐模式。这套盖层是坳陷油气富集的最重要条件之一，也是我国最优良气田—克拉2大气田形成的最重要条件之一。在其下还会有更多的克拉2型的气田存在。
Abstract:
The Tertiary seal is the most enclosed regional cap-rock, deposited from semi-closed bay and lagoon lake, with characterizing by the very large thickness(1000m), widely distributive province, very dense , and very high pore pressure and high breakthrough pressure(＞60MPa), which constructed the strain segmenting zone ,pore pressure barrier and the division of two forming-pool models-the Kelasu model and the Dawanqi model in the Kuche Depression. The characteristics of Kelasu model placed under the regional seal with the overpressure , in anticline trap ,and which one of the Dawabqi model placed upper the regional seal, with the normal-pressure, in many kinds of trap. It has been the one of the most important conditions of the oil and gas enrichment in this depression and the forming factors of the Kela 2 gigantic gas field. Some gas fields similar to Kela 2 will be discovered under the Tertiary seal.
周 兴 熙. 库车坳陷第三系盐膏质盖层特征及其对油气成藏的控制作用[J]. 古地理学报, 2000, 2(4): 51-57.
Zhou Xingxi. The feature of the seal consisted of salty-gypsum layer in the Tertiary and the controlling process of oil and gaspool-forming in the Kuche Depression[J]. JOURNAL OF PALAEOGEOGRAPHY, 2000, 2(4): 51-57.