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从烃源条件和保存条件两方面分析了库车油气系统的成藏条件 ,结果表明 ,中生界烃源岩分布广泛、厚度大 ,富含倾气的Ⅲ型干酪根 ,成熟度高 ,且主力生气期晚 ,使库车油气系统具备了整体富气的气源条件 ;侏罗系、下第三系、上第三系泥岩及膏盐分布广泛、厚度大 ,微观封闭能力强 ,膏盐的发育有效地降低了喜山期断裂活动对成藏条件的破坏 ,区内具备了良好的保存条件 ;源盖条件的有效匹配使库车油气系统成为继续寻找大中型 -特大型天然气田的有利探区
The hydrocarbon accumulation conditions of the Kuqa oil and gas system were analyzed from hydrocarbon source and storage conditions. The results show that the Mesozoic source rocks are widely distributed, with large thickness and rich updip type Ⅲ kerogen, with high maturity and The main angry period was late, making the Kuqa oil and gas system have the overall rich gas source conditions. Jurassic, Lower Tertiary and Upper Tertiary mudstone and gypsum salt were widely distributed, with large thickness and strong microscopic sealing ability. The gypsum salt Effectively reduced the damage to the hydrocarbon accumulation conditions caused by the Himalayan fault activity and provided good preservation conditions in the area; the effective matching of the source cap conditions made the Kuqa hydrocarbon system continue to be favorable for finding large and medium-sized large natural gas fields Exploration area