Petroleum Reservoir Evaluation and Development ›› 2021, Vol. 11 ›› Issue (6): 793-804.doi: 10.13809/j.cnki.cn32-1825/te.2021.06.01

• Specialist Forum •     Next Articles

Different reservoir types of CO2 flooding in Sinopec EOR technology development and application under “dual carbon” vision

LI Yang1(),HUANG Wenhuan2,JIN Yong3,HE Yingfu4,CHEN Zuhua5,TANG Yong6,WU Gongyi7   

  1. 1. China petroleum and chemical corporation, Beijing 100728, China
    2. Chunliang Oil Production Plant, Sinopec Shengli Oilfield, Binzhou, Shandong 256500, China
    3. Sinopec Jiangsu Oilfield, Yangzhou, Jiangsu 225009, China
    4. Sinopec Petroleum Exploration and Production Research Institute, Beijing 100083, China
    5. Research Institute of Exploration and Development, Sinopec East China Oil and Gas Company, Nanjing, Jiangsu 210031, China
    6. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
    7. Taizhou Oil Production Plant, Sinopec East China Oil and Gas Company, Taizhou, Jiangsu 225300, China
  • Received:2021-10-28 Online:2021-12-26 Published:2021-12-31


CO2 flooding has the dual purpose of enhancing oil recovery(EOR) and carbon dioxide storage, and has a large development prospect. In particular, the need of carbon emission reduction gives a large space for the development of large-scale application of this technology. For Sinopec, the development history of CO2 flooding can be divided into three stages: single well stimulation, pilot test and comprehensive application. After more than 50 years of development, CO2 flooding mechanism and supporting technology have been relatively mature. According to the reservoir characteristics of Sinopec and three types of CO2 flooding, which are miscible drive, near miscible drive and immiscible drive, the screening standard of CO2 drive reservoir are established to clarify the mechanism of CO2 flooding in low permeability reservoir, tight reservoir, medium and high permeability reservoir. Taking three reservoirs of Subei Basin, Fu-3 member of Caoshe Oilfield, Fu-3 member in Hua-26 fault block, and Duo-1 member of Zhoucheng Oilfield, and Gao-89-1 block of Zhengli Zhuanggao Block in Bohai Bay Basin as examples, the actual development effect of typical blocks are summarized, showing that CO2 flooding is an important way to improve oil recovery efficiency. In order to solve the technical bottleneck of large-scale application of CO2 flooding in low permeability reservoirs and medium-high permeability reservoirs, the researches on oil displacement mechanism and gas injection effect should be further strengthened to promote the development of CCUS. It is of great significance to achieve “carbon peak” and “carbon neutral” and ensure national energy security.

Key words: carbon capture, utilization and storage(CCUS), CO2 flooding, different reservoir type, enhanced oil recovery, mechanism, standard, development effect

CLC Number: 

  • TE357