Technology progress and development direction of carbon capture,oil-flooding and storage in China
CO2 capture,oil-flooding and storage(CCUS-EOR project)can achieve carbon sequestration while improving oil recovery,which is of great significance for ensuring national energy security and achieving the"dual carbon"goals.By reviewing the foreign and domestic development history of CCUS-EOR project,the paper systematically elaborates the technological progress and engineer-ing practice status in terms of CO2 capture,oil-flooding and storage,and points out the next development direction of CCUS-EOR project.For CO2 capture technology,this paper analyzes the principles,technical characteristics,and application scenarios of pre-combustion,post-combustion,oxygen-rich combustion,and other new carbon capture technologies,and points out that high capture costs and insufficient technological innovation are the main issues restricting the commercialization process of CO2 capture technolo-gy.Moreover,an in-depth analysis is performed on the technological development trend of CO2 oil-flooding and storage from immis-cible flooding,miscible flooding to high-pressure miscible flooding in China.The development concept of CO2 high-pressure miscible flooding and storage in terrestrial sedimentary reservoirs has been innovatively developed with a focus on improving the phase mixing of crude oil and expanding sweep efficiency,thus forming the reservoir engineering design technology for CO2 oil-flooding and stor-age,which involves well pattern and spacing optimization,water-gas alternation,injection-production coupling,and chemical seal-ing.Additionally,relevant supporting technologies such as long-distance pipeline transportation,efficient injection and safety monito-ring are also formed.In response to the challenges and major technical demands faced during CCUS-EOR project development in China,it is proposed to vigorously develop efficient and low-energy CO2 capture technologies for low concentration gas sources,key supporting technologies for collaborative optimization of CO2 oil-flooding and storage,as well as optimization technologies for matching CO2 emis-sion sources with sources and sinks in petroliferous basin,and provide breakthrough direction for the construction of a CCUS full chain industrial cluster system,thus providing support for achieving the large-scale commercial application of CCUS-EOR project.
carbon captureoil-flooding and storagetechnology progressdemonstration projectindustrialization
NETL
NSTL
万方数据
维普
