塔中隆起石炭系油气成藏期研究

Study on Periods of Hydrocarbon Formation Reservoirs of Carboniferous in Tazhong Uplift.

利用油（气）水界面的形成与演化、高压物性资料及根据塔中４油田、塔中６凝析气田石炭系油气特征，对塔里木盆地塔中隆起石炭系油气藏进行了油气运聚成藏期次研究。认为，塔中隆起目前所发现的石炭系油藏形成于古生代末期，中生代调整，新生代再形成；凝析气藏在晚第三纪至第四纪形成。

Based on formation and evolution of the oil(gas)-water contact, PVT test data and characteristics of Carboniferous petroleum system, study on the periods of hydrocarbon migration, accumulation andformation reservoir of Tazhong uplift in Tarim basin was made. The results showed that the Carboniferousreservoirs found nowadays in Tazhong uplift formed in lute Paleozoic, modified in Mesozoic and recoangured in Cenozoic followed by forming condensate gas reservoirs in Neogene and Quaternary period.