Boring or penetrating the earth – With above-ground guide for relatively advancing tool
Patent
1985-01-14
1986-12-16
Novosad, Stephen J.
Boring or penetrating the earth
With above-ground guide for relatively advancing tool
173141, 175162, F21B 1502, F21B 1500
Patent
active
046290141
ABSTRACT:
A derrick (1) for drilling and maintenance of oil and/or gas wells comprises a portal-shaped derrick structure installed on the drilling deck, consisting of an upper traverse (2) and two spaced-apart, substantially parallel, upright derrick components (3,4) which together define a free space (5), within which a hydraulic elevator (6) connected to a drilling machine (18) for the drill string (15) is adapted to travel along stationary, upright rack rails (10). The vertically movable elevator (6), in a manner known per se, is driven by means of hydraulic motors having gears (9) that engage with the rack rails (10).
REFERENCES:
patent: Re27261 (1971-12-01), Bromell et al.
patent: 2276016 (1942-03-01), Brantly
patent: 2514498 (1950-07-01), Kesler
patent: 2781185 (1957-02-01), Robbins
patent: 2807441 (1957-09-01), Sewell
patent: 2869826 (1959-01-01), Thornburg
patent: 3145786 (1964-08-01), O'Neill et al.
patent: 3282357 (1966-11-01), Bunn
patent: 3365008 (1968-01-01), Zimmerman et al.
patent: 3404741 (1968-10-01), Gheorghe et al.
patent: 3465607 (1969-09-01), Erdman
patent: 3695363 (1972-10-01), Kelley
patent: 3785445 (1974-01-01), Scozzafava
patent: 3867989 (1975-02-01), Hisey et al.
patent: 3937301 (1976-02-01), Bertail
patent: 3949818 (1976-04-01), Russell
patent: 4128229 (1978-12-01), Ellison
Transactions of the Institute of Marine Engineers, vol. 92, No. 42, Mar. 1983, pp. 1-11, Londres, GB; J. T. Hatleskog: "Drill String Compensators and Riser Tensioning Systems for Offshore Drilling", p. 7, FIG. 7.
Eilertsen Bjorn
Flobak Jens O.
Gabrielsen Jonny
Jakobsen Nikolai
Swisher Roger C.
Bagnell David J.
Novosad Stephen J.
O.T.C. A/S
LandOfFree
Derrick does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Derrick, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Derrick will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-240129