【摘要】 本文在对中坝气田天然气的成分、碳同位素特征及凝析油的轻烃组成研究的基拙上,结合构造条件分析,指出雷三气藏的气是混源气,气源主要通过断层来自上三叠统须一段。考虑到中、下三叠统生油条件较差,今后在川西北找气,应重视生油层系有机相、运移通道和储集条件配置的研究。更多还原

【Abstract】 Based on the study of the component and carbon isotope characteristic of natural gas and the light-hydrocarbon composition of condensate in Zhongba Gas Field and combined with analyzing its structural conditions,it is pointed out that the gas in Lei-3 Reservoir is the mixed-source one which mainly came form the first member of Xujiahe Formation through the faults. Considering the worsesource conditions in Middle-Lower Triassic,it should pay more attention to researching the match of or-ganic facics of source bcds.migration channels and reservoir conditions in search for gas in northwest Sichuan from now on.更多还原