天山南、北冲断-褶皱带油气成藏条件对比与评价

doi:10.11743/ogg20110613

摘要/Abstract

摘要：

天山南、北两侧的冲断-褶皱带是塔里木、准噶尔盆地油气勘探的重点领域之一。油气成藏条件对比分析表明,两侧冲断-褶皱带在邻近的生烃坳陷均发育以侏罗系煤系地层和湖相泥岩为主的烃源岩,均发育以陆相碎屑岩为主的储集层系,圈闭类型多以断层相关褶皱等构造圈闭为主;但南侧冲断-褶皱带侏罗系烃源岩有机质丰度和有机质成熟度,碎屑岩储层储集物性、储层厚度和展布范围,以及圈闭完整性等油气地质条件均优于北侧。控制这种差异的主要因素是两侧盆地在二叠纪和侏罗纪期间的盆地属性及演化历史、盆地与造山带之间接触的深部地质结构、沉积埋藏及演化历史、主要滑脱层的岩性和盖层岩性及构造活动性等保存条件的不同。

关键词: 油气成藏, 勘探潜力, 冲断-褶皱带, 天山, 塔里木盆地, 准噶尔盆地

Abstract:

The fold-thrust belts on the southern and northern sides of Tien Shan are among the most important target areas for oil and gas exploration.According to the preserve condition analyses for oil and gas,there are some similarities between these two side fold-thrust belts like in the aspects of source rock features,reservoir characters,structures and traps.However,the petroleum geology on the southern side of Tien Shan is better than that on the northern side of Tien Shan,such as the content of organic of source rocks,the characteristics and thickness of reservoirs,structure styles and trap characters.The main factors for these differences are various basin attributions/evolution history,basin-mountain contact relationships,sediment burial history,the lithology of the detachment zone and preserve conditions.

Key words: hydrocarbon accumulation, exploration potential, thrust-fold belt, Tien Shan, Tarim Basin, Junggar Basin

中图分类号:

TE122.1

赵桂萍. 天山南、北冲断-褶皱带油气成藏条件对比与评价[J]. 石油与天然气地质, 2011, 32(6): 903-908. doi: 10.11743/ogg20110613 Zhao Guiping. Comparison and evaluation of hydrocarbon accumulation conditions between the southern and northern Tien Shan thrust-fold belts[J]. Oil & Gas Geology, 2011, 32(6): 903-908. doi: 10.11743/ogg20110613

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