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When the chloride content in the mud is high, it will shorten the lifespan of the motor due to corrosion, which is more prominent at high bottom hole temperatures. If the mass fraction of Cl - concentration in drilling fluid is higher than 30000 × 10-6 hours, saltwater resistant downhole motor should be selected. If the downhole motor has been used in high chloride content mud, it should be rinsed at the wellhead as much as possible after lifting out to prevent corrosion of the downhole motor.
Our company provides special downhole motor for drilling fluids with high chloride content.
The main technology are divided into:
1. Tungsten carbide flame plating rotor
Tungsten carbide flame plating is the process of combining tungsten carbide alloy with the substrate in a coating form to create a tungsten carbide wear-resistant layer. By using supersonic flame plating of tungsten carbide, industrial spare parts are sealed, greatly increasing the wear and corrosion resistance of the product, improving its performance and service life. In petroleum and natural gas downhole motor, due to the erosion of sediment and saturated salt water, tungsten carbide flame plating is used to increase the wear resistance and corrosion resistance of downhole motor, greatly improving their service life.
2. Stainless steel rotor
Use stainless steel materials such as 20Cr13 to make the rotor and perform chrome plating treatment. Excellent performance in corrosion resistance. In recent years, it has gained more applications and recognition.
