摘要
吐哈盆地是一个聚煤而又富含油气的盆地，己发现了一系列侏罗系煤成烃油气田。中、下侏罗统煤系地层是主要的烃源岩，这套源岩生成的油气具有显著的姥鲛烷优势、重碳同位素以及富含Ｃ２９甾烷等特征。煤岩作为盆地重要的源岩，有两个成烃高峰期。由于早生早排，早期形成的构造对油气聚集十分有利，而喜马拉雅期形成的构造聚集油条件欠佳。
Turpan-Hami basin is a coal-accumulating basin enriched in hydrocarbon,in which a series of oil and gas pools sourced from Jurassic coal bed have been discovered.Hydrocarbon generated from Middle-Lower Jurassic coal beds as the main source rock in the basin has remarkably high Pr/ph ratio as well as heavy carbon isotope and C29 sterane.Coal.as the important source rock in the basin,has two peak periods of hydrocarbon generation.Because of earlier generation and expulsion,paleostructures are beneficial to hydrocarbon accumulation,while the structures formed in Himalayan period are not so good for it.
出处
《新疆石油地质》
CAS
CSCD
北大核心
1996年第1期29-33,共5页
Xinjiang Petroleum Geology
关键词
吐哈盆地
生油层
油气聚集
分布
烃源岩
煤系
Turpan-Hami basin Source rock Coal Hydrocarhon component Hydrocarbon evolution Hydrocarbon accumulation
