Boring or penetrating the earth – With tool drive prime mover or above-ground mechanical... – Rotary drive for a relatively advancing tool
Patent
1979-08-24
1981-12-08
Pate, III, William F.
Boring or penetrating the earth
With tool drive prime mover or above-ground mechanical...
Rotary drive for a relatively advancing tool
285 16, 277 31, 166 84, E21B 304
Patent
active
043043100
ABSTRACT:
A drilling head comprises a tubular body adapted for connection above a well head and having a removable side outlet with a replaceable wear bushing. An assembly removably secured in the head includes a stator and rotor with bearing means and rotating seal means therebetween. A replaceable tubular, kelly seal boot or stripper carried by the rotor includes an enlarged upper end which diverts drilling mud away from the rotating seal and toward the side outlet.
REFERENCES:
patent: 1601093 (1926-09-01), Widmeyer
patent: 3052300 (1962-09-01), Hampton
patent: 3128614 (1964-04-01), Auer
patent: 3868832 (1975-03-01), Biffle
patent: 3934887 (1976-01-01), Biffle
patent: 4157186 (1979-06-01), Murray
Conley Ned L.
Pate III William F.
Robinson Murray
Rose David Alan
Smith International Inc.
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