层内自生CO₂提高采收率技术现状*

Status of Enhanced Oil Recovery Technology by In-situ CO₂ Generated in the Formation

金发扬 周顺明 高士博 姚 峥 王瑞林

JIN Fayang，ZHOU Shunming，GAO Shibo，YAO Zheng，WANG Ruilin

自生CO2提高采收率技术是通过化学药剂的相互作用，在储层内自发产生CO2或者泡沫进行调驱的一种新 技术，该技术不需要天然CO2资源、能控制产气量、注入工艺简便、与地层配伍性好，是一种极具潜力的提高采收 率技术。在深入调研的基础上，本文综述了近年来自生CO2产气体系的研究进展以及自生CO2提高采收率技术 的作用机理，为后续进一步深入研究该技术提供参考和借鉴。图2参57

In view of the shortcomings of conventional CO2 flooding，domestic and foreign scholars have proposed in-situ CO2 generation technology and done a lot of research. This technology is a new technology that spontaneously produces CO2 or foam in the reservoir to displacement oil through the interaction of chemical agents，it has the advantages of no natural CO2 resources required，controllable gas production，simple process，good injection，and strong adaptability，it is a promising enhanced oil recovery technology. Based on in-depth research，this paper reviews the research progress on the CO2 gas production system in recent years and the mechanism of the self-generated CO2 flooding technology.

10.19346/j.cnki.1000-4092.2021.03.033