Wave motion compensating and drill string drive apparatus

Details Wave motion compensating and drill string drive apparatus Wave motion compensating and drill string drive apparatus

1973-09-04

1976-12-21

Leppink, James A.

Boring or penetrating the earth

Boring a submerged formation

175 27, 173149, E21B 712

Patent

active

039982807

ABSTRACT:
A wave motion compensating and drill string drive apparatus for use in connection with offshore drilling operations includes a kelley with a mandrel telescopically disposed therein and providing a hydraulic ram whose working volume is supplied with fluid at a preselected pressure such that a constant weight can be imposed by the drill string on the bit as the vessel undergoes vertical motion. The hydraulic fluid is supplied to the ram via a swivel coupling to enable the kelley and mandrel to rotate relative thereto, and the members are coupled by slidable splines for the transmission of torque from the rotary to the drill string.

REFERENCES:
patent: 1971922 (1934-08-01), Smith
patent: 2007666 (1935-07-01), Smith
patent: 2598203 (1952-05-01), Acker
patent: 2838283 (1958-06-01), Simmonds
patent: 2945677 (1960-07-01), Kammerer
patent: 3421581 (1969-01-01), Geijn
patent: 3653635 (1972-04-01), Bates
patent: 3768578 (1973-10-01), Russell
patent: 3917006 (1975-11-01), Kellner
patent: R27261 (1971-12-01), Bromell et al.

Affiliated with

Also associated with

Rating

Wave motion compensating and drill string drive 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 Wave motion compensating and drill string drive apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wave motion compensating and drill string drive apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1833742