Method and apparatus for deepwater drilling

Details Method and apparatus for deepwater drilling Method and apparatus for deepwater drilling

E - Fixed Constructions

21

B

255/16

E21B 7/124 (2006.01) E21B 7/12 (2006.01) E21B 21/00 (2006.01) E21B 21/08 (2006.01) E21B 33/035 (2006.01) E21B 33/08 (2006.01)

Patent

CA 1305469

Abstract of the Disclosure A method and apparatus for drilling subsea wells in water depths exceeding 3000 feet (preferably exceeding 4000 feet). Drilling mud returns are taken at the seafloor and pumped to the surface by a centrifugal pump that is powered by a seawater driven turbine. A low-differential pressure rotating head seats in the upper tapered portion of the longitudinal throughbore of an upper stack package which is attached to the top of the blowout preventer stack and seals against the drill string as it is run in and out of the borehole. The method and apparatus of the present invention enable higher mud weights to be used than can be used in conventional techniques which allows kicks to be more easily controlled, fewer casing strings to be run, and overall drilling time reduced by up to 40%.

565802

Affiliated with

Also associated with

Rating

Method and apparatus for deepwater 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 Method and apparatus for deepwater drilling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for deepwater drilling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1271107