近几年辽河油田低渗油藏开发效果较差，由于低渗透油藏注水开发难以建立有效驱 替系统，因此急需转变开发方式。空气驱是改善低渗油藏开发效果的有效技术，特别是 空气驱具有成本低、驱油效率高等优势，而在辽河油田该项技术研究仍属起步阶段，由 此本文对轻质油藏空气驱进行可行性研究。 本文通过调研国内外文献对轻质油藏空气驱研究现状进行归纳总结空气驱提高采 收率机理。进行轻质油藏注空气驱室内实验：填砂管模型实验和细长管模型实验，对不 同注气压力、不同油藏温度及不同注气速度对采收率的影响进行实验结果分析。并建立 低温氧化数学模型并结合强 1 区实际地质特征建立空气驱模型，对开发因素和地质因素 进行数值模拟研究，其中开发因素包括井距、注气速度和注入压力；地质因素包括渗透 率极差，地层倾角和油藏温度，考察这六大因素对空气驱开发效果的影响。同时制定减 小氧气浓度的注入气体组合，形成减氧空气驱开发方式，对减氧空气驱开发效果进行评 价。 研究表明，注入 0.19PV 时，气体发生突破，在气体突破前可形成含油饱和度较高 的油墙；强1区的井距为400m，注气速度为200t/d，注入压力为 16MPa，渗透率级差为 40，地层倾角为 10°，油藏温度为 85℃时，空气驱的开发效果最佳。强 1 区块注空气开 发效果明显好于水驱，对空气驱进行开发方案预测，生产指标结果表明，该区块进行空 气驱开发潜力巨大。 关键词：强 1 区块；低温氧化；空气驱；数值模拟东北石油大学硕士研究生学位报告 III Qiang 1 block Light Oil reservoir air Injection Displacement Feasibility Study Abstract In recent years, low permeability reservoirs in Liaohe oil field have the poor development results. Liaohe oil field badly needs transformation of the mode of development, because water flooding development of low permeability reservoir is difficult to establish an effective displacement system. The air displacement is an effective technology to improve the development effect of low permeability reservoirs. And air displacement has advantages of low cost and high oil displacement efficiency. In this paper, feasibility study of air displacement of light oil reservoir has been conducted. Light oil reservoir low-temperature oxidation air injection technology is improved the recovery method though the heating effect and the approximate reaction of flue gas flooding. And oxygen in the air and oil consume oxygen oxidizing reaction after high pressure air injection. Based on the research at home and abroad literature this paper summarizes the research status of recovery mechanism of light oil reservoir air flooding. Light oil reservoir air injection displacement indoor experiment has been conducted, including sand filling tube model experiment and a slender tube model experiment. Experiment results analyzed the influence of different gas injection pressure, reservoir temperature and the of different gas injection rate on the recovery. Low temperature oxidation mathematical model and Air displacement model based on geological characteristics of Qiang 1 area has been made. The numerical simulation study on the development and geological factors has been conducted. Developing factors include spacing, gas injection rate and injection pressure. Geologic factors include poor permeability, stratigraphic dip and reservoir temperature. Injected gas composition with reduced the oxygen concentration, Formed oxygen reduction air displacement development way to evaluate oxygen air flooding development effect. Researches show that, when injection of 0.19 PV, gas breakthrough, before the gas breakthrough reservoir can form high oil saturation of oil wall. The development of air displacement effect is best. When distance is 400 m, gas injection rate is 200 t/d, the injection pressure is 16 MPa, permeability differential is 40, the formation dip Angle is 10 °, reservoir temperature is 85 ℃. Air injection effect is much better than that of water flooding development in Qing 1 Block. Development plan projections for air displacement, the production index results show that the blocks in the air drive huge potential for development. Key Words: Qiang 1 Block; low temperature oxidation; Air displacement; numerical simulation东北石油大学硕士研究生学位报告 IV 创新点摘要 1.通过填砂管模型实验研究了空气驱过程中不同注入倍数、注入压力、温度对含油 饱和度影响分析；通过细长管模型实验研究不同油藏温度、不同注入压力和不同氧气浓 度对空气驱过程中驱油效率、压力、温度的影响，得到空气驱过程中压力、温度和含油 饱和度的变化规律，确定油藏温度、压力、氧气浓度对空气驱替效果的影响。 2.根据辽河油田强 1 区的实际情况，建立空气驱理想模型，研究开发因素和地质因 素对轻质油藏空气驱的开发效果影响，同时制定减小氧气浓度的注入气体组合，形成减 氧空气驱开发方式，对减氧空气驱开发效果进行评价，并对区块进行整体空气驱方案预 测。东北石油大学硕士研究生学位报告 目 录 学位报告独创性声明.................................................................................................................I 学位报告使用授权声明.............................................................................................................I 摘要........................................................................................................................................II Abstract...................................................................................................................................III 创新点摘要..............................................................................................................................IV 前 言........................................................................................................................................1 第一章 轻质油藏注空气提高采收率机理研究......................................................................4 1.1 轻质油藏空气驱机理研究进展..................................................................................4 1.2 气驱机理......................................................................................................................5 1.3 推土效应机理..............................................................................................................6 1.4 低温氧化反应热效应..................................................................................................6 第二章 轻质油藏低温氧化数学模型......................................................................................8 2.1 高压注空气低温氧化反应过程方程..........................................................................8 2.2 三相六组分数学模型..................................................................................................9 2.3 氧化动力学模型........................................................................................................11 2.3.2 低温氧化反应简化模型..................................................................................12 2.3.3 氧化动力学基本模型及参数确定..................................................................14 第三章 轻质油藏注空气驱实验研究....................................................................................16 3.1 填砂管模型实验.........................................................................................................16 3.1.1 实验设备..........................................................................................................16 3.1.2 实验方法..........................................................................................................16 3.1.3 实验结果及分析..............................................................................................17 3.2 细长管模型实验........................................................................................................20 3.2.1 实验设备..........................................................................................................20 3.2.2 实验方法..........................................................................................................20 3.2.3 实验结果及分析..............................................................................................20 第四章 强 1 区轻质油藏非烃类气驱数值模拟研究............................................................30 4.1 地质特征........................................................................................................