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Research on Mechanism of Strength Changes of Magnesium Oxychloride Cement in Hot Water

Guo Xiaoyang

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Abstract

The conventional cement can damage reservoirs in sealing profile water plugging and reservoir recreating,so as to influence the acid stimulation,but the magnesium oxychloride cement can fix them very well.In this paper,the effect of magnesium oxychloride cement stone compressive strength in hot water is studied by XRD and SEMEDX.The results show that the strength decreases with longer time and higher curing temperature,the component and form of hydration products have negative effect on the strength,and the best ratio is MgO:MgCl2:H2O= 8:1:16 in normal temperature.

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What this paper is about

The conventional cement can damage reservoirs in sealing profile water plugging and reservoir recreating,so as to influence the acid stimulation,but the magnesium oxychloride cement can fix them very well.In this paper,the effect of magnesium oxychloride cement stone compressive strength in hot water is studied by XRD and SEMEDX.The results show that the strength decreases with longer time and higher curing temperature,the component and form of hydration products have negative effect on the strength,and the best ratio is MgO:MgCl2:H2O= 8:1:16 in normal temperature.

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Available abstract

The conventional cement can damage reservoirs in sealing profile water plugging and reservoir recreating,so as to influence the acid stimulation,but the magnesium oxychloride cement can fix them very well.In this paper,the effect of magnesium oxychloride cement stone compressive strength in hot water is studied by XRD and SEMEDX.The results show that the strength decreases with longer time and higher curing temperature,the component and form of hydration products have negative effect on the strength,and the best ratio is MgO:MgCl2:H2O= 8:1:16 in normal temperature.

Key concepts: Cement, Magnesium, Compressive strength, Curing (chemistry), Materials science, Mechanical strength, Formation water, Composite material

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