页岩油藏CO2提高采收率技术现状及展望

doi:10.3969/j.issn.1672-7703.2022.01.012

摘要/Abstract

摘要： 我国陆相页岩油面临单井产量低、递减快、最终采收率低的开发瓶颈，需超前布局CO₂提高采收率技术。在系统解析北美页岩油CO₂提高采收率技术发展历程的基础上，结合我国陆相页岩油资源现实，详细讨论了该技术在国内页岩油开发的适用性与发展前景。分析表明，我国各页岩油区块原油黏度、地层压力、矿物组成等储层特征迥异，效益开发面临的瓶颈各不相同，CO₂提高采收率的主要作用机理差异显著。因此，需针对性建立各区块CO₂提高采收率技术应用指标，制定合理的技术适应性评价标准，加大力度攻关现场应用各环节的关键技术，并积极争取明确的国家财政支持。综合考虑技术发展前景与资源现实，建议在新疆准噶尔盆地吉木萨尔页岩油区块建立CO₂提高采收率技术先导示范区，建立完整的产业技术与政策支撑体系，推动CO₂提高采收率技术发展，保障我国能源安全，助力国家碳中和战略目标实现。

关键词: 非常规资源, 页岩油, CO2 提高采收率, 研究现状, 发展前景

Abstract: The development of continental shale oil in China faces the bottleneck of low production of single well, rapid decline and low ultimate recovery. Therefore, the CO₂enhanced oil recovery (EOR) technology is necessary to be researched in advance. The development process of CO₂ EOR technology in North America is systematically analyzed, and the applicability and prospects of this technology are discussed by combining with the conditions of domestic continental shale oil resources. The result shows that the shale oil plays in China are characterized by a significant variation on crude oil viscosity, formation pressure coefficient and mineral compositions, which have distinctly different challenges for benefit development and largely different CO₂ EOR mechanisms. As a result, a targeted application index of CO₂ EOR technology is required for various shale oil plays, as well as a technical adaptability evaluation criterion. Meanwhile, efforts should be intensified in all links of field application of CO₂ EOR technology, and clear national financial support should be sought actively. Considering the technology prospects and resource conditions, it is proposed to build a pilot demonstration area for CO₂ EOR application in Jimsar shale oil block in Junggar Basin and establish an integrated technology and policy supporting system, so as to effectively promote the development of CO₂ EOR technology, ensure the domestic energy security and support to achieve the strategic goal of carbon neturality.

中图分类号:

TE313.7

刘合, 陶嘉平, 孟思炜, 李东旭, 曹刚, 高扬. 页岩油藏CO₂提高采收率技术现状及展望[J]. 中国石油勘探, 2022, 27(1): 127-134.

Liu He, Tao Jiaping, Meng Siwei, Li Dongxu, Cao Gang, Gao Yang. Application and prospects of CO₂ enhanced oil recovery technology in shale oil reservoir[J]. China Petroleum Exploration, 2022, 27(1): 127-134.

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页岩油藏CO₂提高采收率技术现状及展望

Application and prospects of CO₂ enhanced oil recovery technology in shale oil reservoir

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