Thrust bearing assembly for a wireline-operated directional...

Details Thrust bearing assembly for a wireline-operated directional... Thrust bearing assembly for a wireline-operated directional...

E - Fixed Constructions

21

B

E21B 17/16 (2006.01) E21B 3/00 (2006.01) E21B 7/04 (2006.01) E21B 17/10 (2006.01)

Patent

CA 2749221

Thrust bearing assembly (40) for a wireline-operated directional core barrel drill, especially for rock drilling of curved holes with a predetermined path, where all sliding or rolling surfaces of the thrust bearing assembly (40) are made of tungsten (wolfram carbide), titanium carbide, ceramic or Polycrystalline Diamond (PCD), and wherein the thrust bearing assembly (40) has an inner diameter large enough to allow the drive shaft (35) to pass through.

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