Special Oil & Gas Reservoirs ›› 2024, Vol. 31 ›› Issue (6): 10-23.DOI: 10.3969/j.issn.1006-6535.2024.06.002

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Research Progress on Magnesium Oxychloride Cement and Its Prospective Application in the Petroleum Industry

Xu Mengran1,2, Bu Yuhuan1,2, Zhao Hengyi3,4, Liu Fang5, Pang Xueyu1,2, Zhang Zhen1,2, Xiang Gang3,4   

  1. 1. School of Petroleum Engineering,China University of Petroleum,Qingdao Shandong 266580,China;
    2. Key Laboratory of Deep Oil and Gas,China University of Petroleum,Qingdao Shandong 266580,China;
    3. Key Laboratory for the Evaluation and Development of Unconventional Natural Gas in Complex Structural Areas, Ministry of Natural Resources,People's Republic of China,Guiyang,Guizhou 550081,China;
    4. Guizhou Oil and Gas Exploration and Development Engineering Research Institute,Guiyang,Guizhou 550081,China;
    5. PetroChina Huabei Oilfield Company,Langfang,Hebei 065700,China
  • Received:2023-08-11 Revised:2024-09-01 Online:2024-12-25 Published:2025-01-22

Abstract: Conventional cement exhibits issues such as volume shrinkage after curing,high brittleness,and high energy consumption during production.In contrast,magnesium oxychloride cement can effectively mitigate the above weaknesses,and possesses engineering advantages such as high mechanical strength,strong CO2 adsorption,temperature resistance,and resistance to salt-brine corrosion.Investigating the application of magnesium oxychloride cement in oil and gas well engineering is of significant importance.Therefore,this paper introduces the basic composition,hydration products,and hydration reaction mechanism of magnesium oxychloride cement.It summarizes the current research status of magnesium oxychloride cement in oil and gas well cementing,reservoir sealing,and drilling waste disposal.It identifies existing research issues and research directions,and highlights the potential application prospects of magnesium oxychloride cement in CCUS,salt-gypsum layer cementing,and deepwater shallow formation cementing.The research findings can provide a reference for the application and development of magnesium oxychloride cement in the petroleum industry.

Key words: magnesium oxychloride cement, well cementation, sealing, water resistance, compressive strength, CCUS, review

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