【摘要】 吐哈盆地台北凹陷鄯深三叠系油气藏成藏后的变化较大。对烃类包裹体、自生伊利石K Ar同位素测年、油砂荧光薄片等微观信息与烃源岩的热演化、储盖组合条件的形成、圈闭的形成与演化、油气运移时期等要素的宏观匹配关系进行多因素综合分析 ,确定该油气藏的成藏早期是中侏罗统七克台组沉积早期 ,充注正常成熟度油气 ;主要成藏期是上侏罗统齐古组沉积早期 ,充注较高成熟度油气 ;主要改造期是上侏罗统齐古组沉积期至喀拉扎组沉积早期 ,再次充注高成熟度的以气为主的烃类。图 4参 13 (王孝陵摘 )更多还原

【Abstract】 Great changes have been taken place in the reservoir of Triassic Formation in Shanshanstructure in Taibei depression, Tuha basin since its formation. Microscopic methods, such as hydrocarbon inclusion, K Ar dating, fluorescence thin section analysis of oil sand and macroscopic methods, such as thermal evolution of hydrocarbon source rocks, the formation of reservoir cap rock assemblage, the formation and evolution of the trap, time of oil and gas migration, etc, were used for comprehensively studying the basin. The paper ascertains that if the early period of pool forming is early J 2q, the normal mature oil and gas filled in the pool; if the main period of pool forming is early J 3q, the high mature oil and gas filled in the pool; and if the main rework period of reservoir is early J 3k, the pool would be filled in again mainly by high mature gas.更多还原