Well tool
Patent
·
OSTI ID:6359033
There is disclosed a turbodrill wherein excessive wear on the axial thrust bearing supporting the shaft from the housing is detectable at the surface by means of an increase in the back pressure of the drilling fluid circulating through the turbine section.
- Assignee:
- Engineering Enterprises Inc
- Patent Number(s):
- US 4260030
- OSTI ID:
- 6359033
- Country of Publication:
- United States
- Language:
- English
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