PCD Bearings 45*65*30mm for Drilling motor with PDC drill bit
PCD Bearings – Current Applications
• Drilling motors (oil and gas)
– Approximately 20 years in this application with resurgence in the past 3 years
– High-load and high-speed applications
– Drilling mud-lubricated
– Replace conventional drilling mud-lubricated ball bearings
• Drilling turbines (oil and gas)
– Approximately 30 years in this application
– Often high well temperatures
– Drilling mud-lubricated
• Other oil and gas drilling tools
– Drilling mud-lubricated
Requirements for Bearings in Geothermal
and Deep Drilling Applications
• High temperature – up to 300 C
• Harsh environments
• Long mean-time between failure (costly to replace tools and/or components)
• Some friction is allowable? – depending on application
• PCD bearings are currently used extensively in oil and gas drilling applications including those in deep and hightemperature wells
• PCD bearings are very likely suitable for many processlubricated geothermal drilling and production applications
– Each application must be judged on its own merits (including axial loads, speeds, and cooling conditions)
• PCD bearings perform well in a wide range of operating conditions including boundary, mixed-mode, and
hydrodynamic lubrication regimes
• New PCD bearing configurations give tool manufacturers design flexibility
