Downhole flexible drive system
Patent
·
OSTI ID:6571052
An improved downhole system for operating a drill bit around a small radius of bend in the directional drilling of curved holes from a vertical well hole in an oil or gas formation. The system is comprised of a plurality of double shaft downhole motors assembled in line and their shafts are connected by a flexible coupling. A flexible assembly encloses the area between the motors and provides a means for drilling fluids to be pumped through the system to a drill bit. The system can be constructed of either electrical motors or fluid turbine motors which can operate from drilling fluids pumped down a drill pipe string.
- Assignee:
- IFI; EDB-81-049375
- Patent Number(s):
- US 4227584
- OSTI ID:
- 6571052
- Country of Publication:
- United States
- Language:
- English
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