Drilling head

Details Drilling head Drilling head

1981-11-16

1984-11-06

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

277 31, 166;84, E21G 304

Patent

active

044807031

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. Lubricating means is provided for the rotating seal.

REFERENCES:
patent: 1601093 (1926-09-01), Windmeyer
patent: 2222082 (1940-11-01), Leman et al.
patent: 2846247 (1958-08-01), Davis
patent: 3052300 (1962-09-01), Hampton
patent: 3128614 (1964-04-01), Auer
patent: 3529835 (1970-09-01), Lewis
patent: 3868832 (1975-03-01), Biffle
patent: 3934887 (1976-01-01), Biffle
patent: 4157186 (1979-06-01), Murray

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