摘要
柴达木盆地北缘煤系天然气资源十分丰富,圈闭面积大、保存条件较好,具备形成大中型气田的有利条件.其成藏机制复杂,具一定勘探风险.天然气成藏受烃源、圈闭、运聚和保存等条件控制,其中最重要的是各成藏条件的良好配置和沟通,生、储层烃源断层的发育,及异常高压等.结合柴北缘油气地质条件,综合考虑成藏机理和主控因素,建立了天然气成藏模式.今后柴北缘天然气勘探方向应以下侏罗统生气中心及邻近圈闭为主.
Northern Margin of Qaidam Basin is rich in coal measure gas source with a large area of traps and good sealing conditions.It is equipped with a good environment for forming medium- or large-gas fields.The exploration of the Northern Margin of Qaidam Basin has been carded out for 50 years,but this area possesses exploration risk with lower explorations scales and complicated gas reservoirs formation mechanism.Gas reservoirs are restricted by many facters like gas sources, traps, migration, accumulation and sealing,etc.Among these conditions the most important ones are good match of gas pool formation conditions and developing faults connecting sources and reservoirs.Besides,abnormal high pressure also an important factor of gas pool formation.Gas pool formation models were sat up according to petroleum geological condition,formation mechanism and controlled factors.The center of generation gas in Lower Jurassic and adjacent traps will be gas explotation focal point.
出处
《新疆地质》
CAS
CSCD
2008年第4期377-381,共5页
Xinjiang Geology
基金
中国石油天然气股份有限公司重点科技攻关项目(2004KY10031)资助
关键词
柴达木盆地
天然气
主控因素
异常高压
成藏模式
Northern Margin of Qaidam Basin
natural gas
source-reservoir-seal assemblage
controlling factors
abnormal high pressure
formation models
exploration direction
作者简介
曲江秀（1974-），女，山东荣成人，讲师，2003年博士毕业于中国石油大学（华东），从事石油地质勘探的教学和研究工作
E-mail：gch260725@163．com
