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因缺乏合适的同位素年龄测定矿物,油气成藏年龄从未被准确测定.松辽盆地深层CO2气藏储层营城组火山岩之石英发育CH4-CO2-盐水次生包裹体,这种次生包裹体乃是气藏充注时捕获在石英裂隙中的流体形成的,为开展40Ar-39Ar成藏年龄研究提供了极佳的测定对象.火山岩储层石英次生包裹体40Ar-39Ar定年获得了高度线性相关的等时线,等时线年龄为(78.4±1.3)Ma,表明松辽盆地深层CO2气藏充注发生于白垩纪晚期.首次报道了高精度的天然CO2气藏成藏年龄数据,建立了油气成藏年龄测定新技术,证实了邱华宁在2006～2007年项目设计中提出的“以流体包裹体40Ar-39Ar定年技术解决油气成藏年龄”的研究思路和技术路线的正确性.
Due to the lack of suitable isotopic dating minerals, the age of hydrocarbon accumulation has never been accurately determined. The secondary inclusions of quartz in volcanic rocks of Yingcheng Formation in the deep CO2 gas reservoir of Songliao Basin develop CH4-CO2-saline secondary inclusions The body was formed by fluid trapped in the quartz fissure during filling of gas reservoirs and provided an excellent measurement target for the study of 40Ar-39Ar reservoir age. The 40Ar-39Ar quartz secondary inclusions of volcanic reservoirs were dated The linear isochron and isochron age are (78.4 ± 1.3) Ma, indicating that the filling of deep CO2 reservoirs occurred in the late Cretaceous in the Songliao Basin.The data of the accumulation ages of high-precision natural CO2 gas reservoirs were reported for the first time, Established a new technology of oil and gas accumulation age determination and confirmed the correctness of the research ideas and technical route proposed by Qiu Huaning during the project design from 2006 to 2007 in “40Ar-39Ar dating technology for fluid inclusions to solve hydrocarbon accumulation age” .