Well drilling tool
Patent
·
OSTI ID:6285301
There is disclosed a turbodrill having an axial thrust bearing section which is contained within a lubricant chamber arranged within an annular space between the case and shaft of the turbodrill above the turbine section, and which is defined between means sealing between the shaft and the case which, in use of the turbodrill, are above the drilling fluid circulating therethrough.
- Assignee:
- Engineering Enterprises Inc
- Patent Number(s):
- US 4260032
- OSTI ID:
- 6285301
- Country of Publication:
- United States
- Language:
- English
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