Hydraulic drilling rig and power swivel

Details Hydraulic drilling rig and power swivel Hydraulic drilling rig and power swivel

1974-09-30

1976-04-13

Purser, Ernest R.

Boring or penetrating the earth

With magazine for successively moving unconnected, oriented...

166315, 173 57, 173164, 175 85, 214 25, E21B 1914

Patent

active

039498182

ABSTRACT:
A two-ram hydraulic drilling rig is provided with a lateral support frame. The rams have rods connected through a tension structure with a power swivel. The power swivel has a removable swivel stem assembly for allowing through-swivel positioning of drill pipe, particularly for tripping.

REFERENCES:
patent: 2174115 (1939-09-01), Auld et al.
patent: 3005504 (1961-10-01), Mayhew
patent: 3158213 (1964-11-01), O'Neill et al.
patent: 3282357 (1966-11-01), Bunn
patent: 3312294 (1967-04-01), Wilson
patent: 3722607 (1973-03-01), Ray
patent: 3766991 (1973-10-01), Brown

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