摘要
系统剖析了不同成煤环境下煤的成油潜力。对吐哈盆地煤层划分出四种煤相类型：干燥森林沼泽相、潮湿森林沼泽相、流水沼泽相及开阔水体沼泽相。不同煤相煤的生烃潜力存在差异，干燥森林沼泽相形成的煤，其惰质组含量高，为氧化环境下形成的产物，生烃潜力＜１２０ｍｇ／ｇ，基本为非生油岩；潮湿森林沼泽相形成的煤，其沼泽水介质可以从弱氧化到弱还原环境，成油性范围较宽，从差生油煤到中等生油煤均存在；流水沼泽相形成的煤，沼泽水介质从弱还原到还原环境，基本具中等生油能力；而开阔水体沼泽相主要形成于还原环境，富含壳质组分，应属于好生油煤。流水沼泽相是煤成油源岩发育的最有利相带，三角洲分流间湾沼泽应是煤成烃勘探最有利的场所。以生烃潜力为基准，提出煤作为油源岩的评价标准。
he Turpan Hami Basin is a typical example of oil derived from coal.Four types of coal facies are distinguished,dry forest swamp,moist forest swamp,running water swamp and open water swamp,based on coal formed environments and genesis of macerals.The oil generation potentials were analyzed for different coal formed environments.It is pointed out that delta interdistributary swamp is favorable for coaly oil source rock,running water swamp is a benefit location to hydrocarbon derived from coal combining the development degree of coalbed.Assessment standard of coal acted as oil source rock is proposed.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1998年第3期21-25,共5页
Acta Petrolei Sinica
关键词
吐哈盆地
煤成油
聚煤环境
煤系
生油岩
盆地
Turpan Hami Basin coal formed oil coal formed environment coal measures source rock evaluation
