Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type
Patent
1978-09-05
1980-04-22
Leppink, James A.
Boring or penetrating the earth
With below-ground tool drive prime mover
Fluid rotary type
175228, 277135, 308DIG9, 415502, E21B 312, E21B 4100
Patent
active
RE0302570
ABSTRACT:
There are disclosed several embodiments of a well tool which is adapted to be connected as part of a pipe string through which drilling fluid is circulated, and which comprises inner and outer members which are rotated with respect to one another by a motor between them.
REFERENCES:
patent: 2456496 (1948-12-01), Ford et al.
patent: 2646962 (1953-07-01), Wagner
patent: 3232362 (1966-02-01), Cullen et al.
patent: 3291230 (1966-12-01), Cullen et al.
patent: 3659662 (1972-05-01), Dickey
patent: 3741321 (1973-06-01), Slover, Jr. et al.
patent: 3749511 (1973-07-01), Mayall
patent: 3807513 (1974-04-01), Kern et al.
Eickenroht Marvin E.
Engineering Enterprises Inc.
Favreau Richard E.
Leppink James A.
Thompson Jennings B.
LandOfFree
Well drilling tool does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Well drilling tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Well drilling tool will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1468857