Abstract: The oxidation state in the process of the fire flooding is very important index factor to judge the efficiency of oil combustion. In this paper, the insufficiency applicability of the method of judging combustion state in the process of ordinary heavy oil fire flooding is studied. First of all, the thermal weight experiment of Du 66 crude oil in Shuguang oil field was studied to determine the relationship between the oxidation temperature and the quality of the reaction stage, and the different stages of the reaction characteristics were obtained. Subsequently, the high temperature and low temperature oxidation experiments were stimulated in order to determine the oxygen utilization ratio, N₂/CO₂ molar ratio, H/C atomic ratio and gas value of crude oil sample. The results show that these indicators can be used to judge the calibration value of the oxidation reaction state, so as to guide the field to judge the state of oxidation.

Key words: Fire flooding, Oxidation status, Low temperature oxidation, High temperature oxidation, Judge state

摘要： 火驱过程中氧化状态是判断原油是否充分燃烧的重要依据, 基于适用性不足的氧化状态判定方法进
行了研究。首先, 对曙光油田D区块原油进行了热重实验, 通过查看火驱各反应阶段的氧化温度与质量分数的关
系, 获得不同阶段的反应特征。然后, 进行室内低温氧化与高温氧化模拟实验, 分析该原油样品的低温氧化、 高温氧
化的实验结果, 对氧气利用率、 N2与CO2物质的量的比值、 视氢碳原子比以及气体指数进行定量标定。实验结果表
明, 运用这些指标的标定值可以判断室内实验的稠油火驱氧化状态, 为进一步判断矿场稠油火驱氧化状态提供
指导。

关键词: 火驱, 氧化状态,  , 低温氧化, 高温氧化,  , 状态判定