Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent
1996-03-19
1998-03-03
Neuder, William P.
Boring or penetrating the earth
With tool shaft detail
Shaft carried guide or protector
F21B 1710
Patent
active
057224960
ABSTRACT:
A removable guide member for guiding drill string components in a drill hole includes and elongated body having a centerline axis with a bore extending along the axis. The body terminates in a head end having a preselected radial dimension with respect to the centerline axis. The guide member is adapted to be threadably connected to adjoining drill string components. The head end radial dimension is preselected to space an outer surface thereof in close proximity to a drill hole sidewall, so that if the drill string begins to deviate out of alignment, the outer surface of the head end will contact the drill hole sidewall to stabilize alignment. The guide member can be inserted into any position along the drill string.
REFERENCES:
patent: 3420323 (1969-01-01), Owens
patent: 3851719 (1974-12-01), Thompson et al.
patent: 3923324 (1975-12-01), Cruickshank et al.
patent: 3945446 (1976-03-01), Ostertag et al.
patent: 3948575 (1976-04-01), Rosser
patent: 4245708 (1981-01-01), Cholet et al.
patent: 5474143 (1995-12-01), Majkovic
Sandvick Product Catalogue dated Aug. 1, 1989.
Connell Stuart A.
Laub James T.
Patsell James C.
Ingersoll-Rand Company
Neuder William P.
Selko John J.
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