【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。更多还原

【Abstract】 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.更多还原