提高采收率
烟气
二次空气喷射
石油工程
燃烧
轻质原油
残余油
注水(采油)
环境科学
油田
磁导率
蒸汽注入
环境工程
废物管理
地质学
化学
有机化学
工程类
古生物学
生物化学
膜
作者
Zongfa Li,Lijuan Huang,Xiaosong Zhou,Xiaoyu Huang,Zhiwei Chen,Shaoran Ren
出处
期刊:Physics of Fluids
[American Institute of Physics]
日期:2024-03-01
卷期号:36 (3)
被引量:4
摘要
Aiming at low permeability, high water content light reservoir with a recovery rate higher than 20%, an improved air injection enhanced heat flooding technology is applied by combining the combustion reaction flow and flue gas flooding mechanism. The method involves the injection of air into the reservoir, which reacts with the crude oil at temperatures ranging from 220 to 300 °C. This reaction consumes part of the oil, enabling effective evaporation and flow of the remaining oil. This process combines combustion reaction flow with flue gas flooding, using high-temperature oxidation reactions to mobilize residual oil. Experimental results from combustion tube tests demonstrate stable reaction fronts, peak temperatures reaching up to 550 °C, and a significant increase in recovery rates, reaching 73.8% in some cases. Field applications of this technology require maintaining high air flux and burning rates in low-permeability zones to ensure effective heat-driven evaporation. The geological model of the well group shows that the recovery factor of the target block can be increased by more than 20% by air injection based on the water drive recovery factor of 28%–30%. The oil exchange ratio can be less than 4000 sm3/m3 by optimizing the air injection rate and oxygen content. The research results provide technical feasibility for heat flooding to significantly improve oil flow and recovery in low-permeability light oil reservoirs.
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