Downhole motor and method for directional drilling of boreholes
Patent
·
OSTI ID:6250159
The invention relates to a downhole motor having a housing of which the resistance against bending in a predetermined longitudinal plane is smaller than in any other longitudinal plane. Directional drilling of boreholes is carried out by rotating the drill string simultaneously with the rotation of the drill bit driven by the downhole motor over periods preceded and followed by selected periods during which the drill string is not rotated simultaneously with the rotation of the drill bit driven by the downhole motor.
- Assignee:
- Shell Oil Company
- Patent Number(s):
- US 4485879
- OSTI ID:
- 6250159
- Country of Publication:
- United States
- Language:
- English
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