【摘要】 在F1断裂发育及演化特征分析的基础上,利用自行设计组装的模拟实验装置,对断裂在塔里木盆地克拉2气田形成中的作用进行了模拟,得到F1断裂在活动时期侏罗系和三叠系源岩生成、排出的天然气向上运移的通道,但沿其运移散失速度大于其进入克拉2气田内的天然气速度,对克拉2气田形成的贡献不大。通过物理模拟试验确定了膏泥岩塑性变形极限和断裂带封气所需要的膏泥岩含量下限,利用断层面压力和断裂带中膏泥含量对F1断裂静止后垂向封闭性进行了评价,结果认为,F1断裂在垂向上具有好的封闭性,对克拉2气田中天然气的保存十分有利更多还原

【Abstract】 The development and evolution of F1 fault is analyzed. The effect of F1 fault on forming Kela-2 gas field in Tarim basin is simulated by using the self-designed model. The pathway for gas migrating upward generated and discharged from Jurassic and Triassic source rocks in active F1 fault. The result shows its little contribution to the shape of Kela-2 gas field for the losing velocity of gas through F1 fault zone is bigger than the velocity of gas entering into Kela-2 gas field. The physical model experiment provides the plastic deforma- tion limit of gypsum and mudstone and the minimum contents of gypsum and mudstone to seal gas in F1 fault zone. The fault plane pres- sure and the contents of gypsum and mudstone are used for evaluation of seal feature in static F1 fault zone, indicating its good vertical seal and favorable preservation for gas accumulation in Kela-2 gas field.更多还原