油气田中油气的分异作用——以塔里木盆地牙哈凝析油气田为例  

Differentiation Process inside Oil and Gas Fields: Example from the Yaha Oil and Gas Condensate Field in the Tarim Basin

作　　者：周兴熙[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《地质论评》2003年第5期507-512,共6页Geological Review

基　　金："九五"国家重点科技攻关项目"塔里木盆地天然气成藏条件及勘探方向"(编号99-111-01-03)

摘　　要：塔里木盆地牙哈油气田是我国迄今发现的最大的凝析油气田,由12个油气藏组成,油气分布具有“西油东气”、“上气下油”、“上轻下重”的特征,这种特征的形成,是油气自西北分两个高峰期注入和在重力作用下分异的结果,呈现了“中部注入的正向差异聚集”的模式。这种模式与Gussow和Schowalter所建立的模式在形成机制或油气分布方面有所不同。The Yaha oil and gas field in the Tarim Basin is the largest oil and gas condensate discovered in the mainland of China up to now, which consists of 12 petroleum pools. The distribution of oil and gas is characterized by 'oil enriched in the west, gas enriched in the east' , 'oil enriched in the upper, gas enriched in the lower' and ' lighter in the upper, heavier in the lower'. The character was cause by gravitational differentiation, when oil and gas injected from the northwest during two peaks of petroleum injection. It formed a 'positive differential entrapment injected from the middle' model, which is different from those of Gussow and Schowalter.

关 键 词：分异作用 重力分异 正向差异聚集 凝析油气田 塔里木盆地 

分 类 号：P618.13[天文地球—矿床学]