Abstract
The high temperature formation, strong abrasiveness, numerous fractures and caves are the main problems of high temperature geothermal well drilling, cementing. Cone bit teeth repeated impact tests show that bit life mainly affected by tooth shape, materials, solid tooth technology. Setting special materials around the teeth and adjusting the fitting wring will improve the life of cone bit teeth. Study of quartz sand amount and fineness ratio effect on cement high temperature compressive strength, permeability show that optimization of high temperature cement slurry can improve the high temperature leakage zone cementing sealing and long-term effectiveness.
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