Performance Prediction of a Turbodrill Based on the Properties of the Drilling Fluid

High-temperature geothermal well resource exploration faces high-temperature and high-pressure environments at the bottom of hole. The all-metal turbodrill has advantages resistance corrosion good application prospects. Multistage hydraulic components, consisting stators rotors, are key to turbodrill. purpose this paper is provide a basis for designing blades with high-density drilling fluid under conditions. Based on basic equation pseudo-fluid two-phase flow modified Bernoulli equation, mathematical model coupling viscous blade established. A single-stage performance prediction proposed extended multi-stage blades. Computational Fluid Dynamics (CFD) 100-stage channel established, simulation results different properties given. analysis confirms influence viscosity density output research show that compared condition clear water, high-viscosity conditions (viscosity 16 mPa∙s, 1.4 g/cm3) will increase braking torque by 24.2%, peak power 19.8%, pressure drop 52.1%. be beneficial modification geometry guide on-site improve efficiency.