中国中西部4种组合类型前陆盆地油气成藏研究：Ⅱ.油气成藏过程分析

分别以准西北缘前陆盆地(早衰型)、川西前陆盆地(改造型)、柴北缘冲断带(新生型)和准南前陆盆地(叠加型)为例，探讨了中国中西部不同组合类型前陆盆地的油气成藏过程。指出燕山期及之前是早衰型前陆盆地(准西北缘)和改造型前陆盆地(川西)最主要的油气成藏期，喜山期则主要表现为早衰型前陆盆地油气藏的保存和改造型前陆盆地油气藏的调整和定型;喜山晚期是新生型前陆盆地(如柴北缘前陆冲断带)最主要的成藏期，而叠加型前陆盆地(准南前陆盆地)具有多期成藏的特征，但喜山晚期的油气成藏最为重要。

HYDROCARBON ACCUMULATION OF FOUR ASSEMBLAGE FORELAND BASINS IN CENTRAL-WESTERN CHINA:PART Ⅱ.FILLING STAGES

Oil & gas accumulation stages are discussed based on examples such as northwestern Junggar foreland basin(the presenile type),western Sichuan basin(the reconstructed type),northern Chaidamu foreland thrust(the regenerated type) and southern Junggar foreland basin(the superimposed type).The main hydrocarbon accumulations for the northwestern Junggar foreland basin and the western Sichuan basin occured before and in the period of Later Yanshan movement,with reservoir adjusting in the western Sichuan basin and reservoir preservation in the northwestern Junggar basin in the period of Himalayan movement.The main hydrocarbon accumulation in the northern Chaidamu foreland thrust belt occured in the period of Later Himalayan movement.There were several hydrocarbon accumulation periods in the southern Junggar foreland basin,the most important period being in the Later Himalayan movement.