Research Progress on Magnesium Oxychloride Cement and Its Prospective Application in the Petroleum Industry
Conventional cement exhibits issues such as volume shrinkage after curing,high brittleness,and high en-ergy 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,temper-ature resistance,and resistance to salt-brine corrosion.Investigating the application of magnesium oxychloride ce-ment in oil and gas well engineering is of significant importance.Therefore,this paper introduces the basic composi-tion,hydration products,and hydration reaction mechanism of magnesium oxychloride cement.It summarizes the cur-rent 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 oxychlo-ride cement in the petroleum industry.
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