E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/09 (2006.01) B63B 35/44 (2006.01) F16J 15/40 (2006.01)
Patent
CA 2737172
A system compensates for heave induced pressure fluctuations on a floating rig when a drill string or tubular is lifted off bottom and suspended on the rig, such as when tubular connections are made during MPD, tripping, or when a kick is circulated out during conventional drilling. In one embodiment, a liquid and a gas interface moves along a flow line between a riser and a gas accumulator as the tubular moves up and down. In another embodiment, a pressure relief valve or adjustable choke allows the movement of fluid from the riser when the tubular moves down, and a pump with a pressure regulator moves fluid to the riser when the tubular moves up. In other embodiments, a piston connected with the rig or the riser telescoping joint moves in a fluid container thereby communicating a required amount of the fluid either into or out of the riser annulus. The system also compensates for heave induced pressure fluctuations on a floating rig when a riser telescoping joint located below a RCD is moving while drilling.
Bailey Thomas F.
Hannegan Don M.
Harrall Simon John
Marks & Clerk
Weatherford/lamb Inc.
LandOfFree
System and method for managing heave pressure from a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for managing heave pressure from a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for managing heave pressure from a... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1473451