Boring or penetrating the earth – With means to simultaneously feed and rotate tool from a...
Patent
1988-03-03
1989-03-21
Neuder, William P.
Boring or penetrating the earth
With means to simultaneously feed and rotate tool from a...
173 44, E21B 1906
Patent
active
048134988
ABSTRACT:
An active counterbalance for suspending a power swivel from a traveling block. The power swivel includes a motor drive assembly for rotating a drill string and a handling system for supporting a drill pipe. The counterbalance includes a motor which provides means for biasing the load capacity of the counterbalance when supporting the power swivel to allow vertical displacement of the power swivel relative to the traveling block. The counterbalance prevents damage to connecting or sealing surfaces when adding pipe to or removing pipe from the drill string because most of the weight of the power swivel and pipe suspending from the handling system is transferred to the counterbalance.
REFERENCES:
patent: 2712932 (1955-07-01), Gould
patent: 3037803 (1962-06-01), Phillips
patent: 3766991 (1973-10-01), Brown
patent: 3792787 (1974-02-01), Maloney
patent: 3838613 (1974-10-01), Wilms
patent: 3942592 (1976-03-01), Hodge
patent: 4121806 (1978-10-01), Jato et al.
patent: 4251176 (1981-02-01), Sizer et al.
patent: 4589503 (1986-05-01), Johnson et al.
patent: 4593773 (1986-06-01), Skeie
Ford David B.
Lynch James E.
Bunyard R. J.
Fillnow L. A.
Johnson R. H.
National-Oilwell
Neuder William P.
LandOfFree
Active counterbalance for a power swivel during well drilling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active counterbalance for a power swivel during well drilling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active counterbalance for a power swivel during well drilling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-471385