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根据圈闭形成时间、油气成熟度、有机包裹体特征等综合分析认为 ,库车前陆逆冲带具有多期油气运移注入的历史 ,主要运移充注事件有晚第三纪康村早中期 (17~ 10Ma)、康村晚期—库车早中期 (10~ 3Ma)、库车晚期—第四纪西域期 (3~ 1Ma) 3期。其中库车晚期—西域期是库车前陆逆冲带天然气藏形成的主要时期 ,康村期—库车早中期则主要是原生油藏和凝析气藏的形成时期 ,但此阶段形成的油藏和凝析气藏在库车晚期—西域期因受到大量高过成熟气的气侵作用以及构造破坏作用而多形成次生油藏甚至破坏散失
According to the comprehensive analysis of trap formation time, oil and gas maturity and organic inclusion characteristics, the Kuqa foreland thrust belt has a history of multi-period hydrocarbon migration and infiltration, and the main migration and infilling events are late Early Tertiary Kangcun In the middle period (17 ~ 10Ma), late Kangcun - early and middle stages of Kuche (10 ~ 3Ma), late Kuqa - Quaternary period (3 ~ 1Ma) Among them, the late Kuqa-western region is the main period of the formation of natural gas reservoirs in the Kuqa foreland thrust belt. The early-middle period of Kangcun-Kuqa is mainly the formation of primary reservoirs and condensate gas reservoirs. However, Reservoirs and gas condensate reservoirs are formed in the late Kuqa-western region because of the gas invasion and the tectonic disruption caused by a large amount of over-mature gas, resulting in the formation of secondary reservoirs and even the destruction and dissipation