Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Patent
1989-12-29
1993-12-28
Neuder, William P.
Boring or penetrating the earth
Means traveling with tool to constrain tool to bore along...
Sectional guide or shaft having means to lock sections in...
175256, E21B 708
Patent
active
052731235
ABSTRACT:
A fitting for controlled trajectory drilling. This fitting comprises a downhole motor, a drilling tool, at least one stabilizer and a remote controlled variable angle elbow element.
REFERENCES:
patent: 4077657 (1978-03-01), Trzeciak
patent: 4739842 (1988-04-01), Kruger et al.
patent: 4817740 (1989-04-01), Beimgraben
patent: 4836303 (1989-06-01), Boulet et al.
patent: 4877092 (1989-10-01), Helm et al.
Bardin Christian
Boulet Jean
Morin Pierre
Institut Francais du Pe'trole
Neuder William P.
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