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Application and Improvement of CO2 Flooding Injection-Production Technology in Yanchang Oilfield
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Yiting WANG, Pengtao SHI, Liting MING, Shihao WANG, Zhuolin GAO
Science Technology and Industry | 2025, 25(3) : 26 - 30
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Science Technology and Industry | 2025, 25(3): 26-30
• Technology Innovation •
Application and Improvement of CO2 Flooding Injection-Production Technology in Yanchang Oilfield
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Yiting WANG, Pengtao SHI, Liting MING, Shihao WANG, Zhuolin GAO
Affiliations
  • Exploration and Development Technology Research Center, Yanchang Oilfield Co., Ltd, Yan’an 716000, Shaanxi, China
Published: 2025-02-10
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In order to help realizing the national “double carbon target”, it is necessary to explor oilfield recovery technology in-depth. Yanchang Oilfield has established two pilot test areas, an engineering demonstration site, and determined to start the planning of CCUS(carbon capture, utilization, and storage) project with an annual injection volume of 5 million tons, but there are some limitations and deficiencies in the existing CO2 injection and extraction process. The current situation and characteristics of CO2-driven injection and extraction technology in oilfields were systematically described, the problems in field application were thoroughly discussed. A series of improvements and refinements are proposed in injection and extraction wellheads, tubing columns, ancillary tools and anticorrosion measures, etc., to form an injection and extraction technology that meets the demand of prolonging the 360 000 ton annual injection volume of low-permeability reservoirs. The next direction of CO2 drive injection and extraction technology is proposed in order to provide reference and guidance for the development of the subsequent million-ton CCUS injection and extraction technology and supporting technology of Yanchang.

Yanchang Oilfield  /  CO2 flooding  /  injection-production technology  /  packer  /  gas injection string
Yiting WANG, Pengtao SHI, Liting MING, Shihao WANG, Zhuolin GAO. Application and Improvement of CO2 Flooding Injection-Production Technology in Yanchang Oilfield[J]. Science Technology and Industry, 2025 , 25 (3) : 26 -30 .
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Year 2025 volume 25 Issue 3
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Article Info
  • Receive Date：2024-06-26
  • Online Date：2025-07-21
  • Published：2025-02-10
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  • Received：2024-06-26
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Affiliations
    Exploration and Development Technology Research Center, Yanchang Oilfield Co., Ltd, Yan’an 716000, Shaanxi, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
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Percentage of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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