Controlling factors for large gas field formation in thrust belt of Kuqa coal derived hydrocarbon foreland basin

作     者：SONG Yan JIA Chengzao ZHAO Mengjun TIAN Zuoji 

作者机构：Research Institute of Petroleum Exploration and DevelopmentPetroChinaBeijing 100083China PetroChinaBeijing 100011China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2002年第47卷第S1期

页      面：55-61页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：sub-project(G1999-04-33) 

主　　题：foreland basin thrust belt coal-bearing formation large gas field. 

摘      要：Kuqa depression is a foreland basin developedwith Mesozoic-Triassic-Jurassic coal-bearing formation. Theresearch results of the coal-derived hydrocarbon forelandbasins in Kuqa depression indicated that the coal-bearingformation can be the rich sources for generating gas becauseof their thickness and rich source rocks with gas-generatingpredominant kerogen. Although the foreland thrust beltmainly acting in compression is very complicated, integrallarge structural traps can be formed. Moreover, the thrustbelt can act as the passage for communication with deepsource rocks. The high quality gypsolish and gypseous mud-stone cap rock developed in the upper formation is the keyfor the formation of the large gas field. The late formation ofreservoirs in the large gas fields depended on the hydrocar-bon-generating history controlled by the foreland basin andthe developing process of foreland thrust belt.