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通过室内试验和油藏模拟已经研究了与裂缝性轻油油藏注空气有关的采油机理,把注空气确定为用于裂缝性轻油白垩油藏的可能的IOR方法。为了研究动力特性(例如活化能和着火温度)进行了室内试验。此外,通过试验估算了扩散系数,利用数值模拟对这些扩散系数进行了验证。根据室内试验和地质力学模拟评价了由于热和CO2可能造成的白垩变化。为了研究通过孔隙介质的燃烧前缘扩大情况进行了燃烧管试验。进行了油田规模的注空气可行性研究,介绍了该项研究的结果,包括潜在采油效益的评价和在注空气项目中包括的主要费用。
The mechanism of oil recovery related to the injection of air into fractured light oil reservoirs has been studied through laboratory experiments and reservoir simulations, and the injection of air has been identified as a potential IOR method for use in fractured light-oil chalk reservoirs. In order to study the dynamic characteristics (such as activation energy and ignition temperature) conducted indoor tests. In addition, the diffusion coefficient was estimated experimentally and these diffusion coefficients were verified by numerical simulation. Chalk changes due to heat and CO2 were evaluated based on laboratory tests and geomechanical simulations. In order to study the expansion of the combustion front through the porous media, a combustion tube test was conducted. A feasibility study of air injection at an oilfield scale was conducted and the results of the study were presented, including an assessment of potential oil recovery benefits and major costs included in the air injection project.