Drilling head method and apparatus

Details Drilling head method and apparatus Drilling head method and apparatus

1983-08-24

1985-07-30

Novosad, Stephen J.

Boring or penetrating the earth

Processes

277 3, 277 31, 175195, 166 84, E21B 3303

Patent

active

045315914

ABSTRACT:
A rotary drilling head wherein rotary friction between the rotary spindle assembly and the spindle housing is limited by improvements in bearing and seal lubrication and by seal structure such that the gripping action of a resiliently flexible packer on a drill string provides a rotary drive connection sufficient to impart rotation to the spindle assembly through rotation of the drill string.

REFERENCES:
patent: 2170916 (1939-08-01), Schweitzer et al.
patent: 2862735 (1958-12-01), Knox
patent: 3029083 (1962-04-01), Wilde
patent: 3128614 (1964-04-01), Auer
patent: 3387851 (1968-06-01), Cugini
patent: 3400938 (1968-09-01), Williams
patent: 3503617 (1970-03-01), Williams
patent: 4345769 (1982-08-01), Johnston
patent: 4363357 (1982-12-01), Hunter
patent: 4367791 (1983-01-01), Bittle
patent: 4423776 (1984-01-01), Wagoner et al.

Affiliated with

Also associated with

Rating

Drilling head method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drilling head method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drilling head method and apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2367840