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A glass-like casing was developed to mend the instable borehole due to its great similarities in compositions and structure. In order to boost the casing’s mechanical properties and lower its cost, different wt% additions of aluminum and quartz sand are added into the composition. Based on the outcomes of differential scanning calorimeter (DSC), it is suggested to be sintered at the temperature of 700°C. The results of X-ray diffraction (XRD) show that aluminum and SiO2 are its main crystalline phases. Its compression strength and the tensile strength range 5–14 Mpa and 0.5–4.5 Mpa, respectively, with the relative densities of between 1.00 g/cm3 and 1.19 g/cm3. In the end, a glass-based formula with 30 wt% aluminum and 40 wt% quartz sand is developed and experimentally applied

Composition Optimization of Glass-Like Casing and Its Novel Application in Mending Instable Borehole Wall