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长庆油田注气驱油先导性试验预计将在低渗透的安塞油田坪桥区进行。作为室内前期工作，研究了安塞长６层原油与长庆气田天然气及长庆气田天然气／马岭炼厂液化气混合气之间的混相性质，测定了油气混合体系中气相的组成、油相中溶解气体的组成及油相（溶气原油）的高压物性。研究结果表明，对于安塞长６层原油，天然气／液化气混合气是比天然气更有效的驱替气体
Changqing Oilfield gas injection oil displacement pilot test is expected to be in the low permeability Ansai Oilfield Pingqiao area. As a preliminary work in the laboratory, the miscibility properties between the long 6-layer crude oil of Ansai and the natural gas of Changqing Gas Field and the natural gas / Maling Refinery gas mixture of Changqing Gas Field and Maling Refinery were studied. The gas phase composition, oil phase Dissolved gas composition and the oil phase (dissolved crude oil) high pressure properties. The results show that for the 6-layer crude oil in Ansai, the natural gas / liquefied gas mixture is a more effective displacement gas than natural gas