Angle adjustment sub

Details Angle adjustment sub Angle adjustment sub

1976-05-04

1978-01-10

Callaghan, Thomas F.

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

Normally curved guide or shaft

285 89, 285 91, 285 93, 285184, 285333, E21B 708

Patent

active

040674045

ABSTRACT:
An angle adjustment sub which permits the rotational adjustment of adjacent portions of a running string to bring the axis of adjacent portions of a running string, which are deviated at different vertical angles, into a common planar axis.

REFERENCES:
patent: 1349518 (1920-08-01), Lyle
patent: 2090008 (1937-08-01), Newmark et al.
patent: 2320107 (1943-05-01), Speckert
patent: 2501217 (1950-03-01), Hawn
patent: 2646253 (1953-07-01), Johnston
patent: 2680358 (1954-06-01), Zublin
patent: 2746773 (1956-05-01), Bily
patent: 3128825 (1964-04-01), Blagg
patent: 3189372 (1965-06-01), Johnson
patent: 3260318 (1966-07-01), Neilson et al.
patent: 3398804 (1968-08-01), Holbert
patent: 3563323 (1971-02-01), Edgecombe

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