为了确定轻质油藏注空气提高原油采收率技术在海塔油田贝中次凹区块应用的可行性,根据注空气的主要技术原理,设计了水驱和空气驱驱油效率对比实验、细长管空气驱低温氧化实验、燃烧管空气驱高温氧化实验和产出气体溶胀实验.研究表明:海塔油田空气驱比水驱驱油效率高22.19％；注空气后油藏中可以发生低温氧化反应,且氧化随温度升高加速进行；取得了低温氧化反应动力学参数活化能和指前因子；得到了产出气组分变化关系及产出气溶于原油后溶解度、黏度、密度和体积系数的变化.验证了注空气低温氧化采油技术原理,为轻质油藏注空气开发技术的矿场实施提供了可靠依据.%In order to determine the feasibility of applying light-oil air-injection EOR technology in Beizhong Sub-sag of Hailar-Tamsag Oilfield, the contrast experiment of the displacement efficiency of water flooding and air-injection displacement, slime tube low-temperature oxidation test of air-injection displacement, combustion tube high-temperature oxidation test of air-injection displacement and swelling experiment of produced gas are designed according to main technological theory of air injection. The study shows that the displacement efficiency of air-injection displacement is 22. 19% higher than that of water flooding. Low temperature oxidation may occur in reservoirs after air injection, and moreover the oxidation may accelerate with the increase of temperature. The kinetic parameters of low-temperature oxidation reaction, I. E. Activation energy and pre-exponential factor, are obtained. The component change relation of produced gas and the change of solubility, viscosity, density and volume factor of produced gas after its dissolve in crude oil are obtained. The technical principle of air-injection low-temperature oxidation oil recovery is verified, all of which provides the reliable evidence for the field operation of air-injection oil recovery technology in light-oil reservoirs.
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