E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
61/12.1
E02D 27/52 (2006.01) E21B 33/038 (2006.01)
Patent
CA 1155308
-19- ABSTRACT OF THE DISCLOSURE A sea-floor cellar is installed in substantially in the sea-floor in a shallow water area where the distance between the sea-floor, which has a packed or rock ladened soil formation, and a drill ship is not sufficient to allow for normal positioning of a blowout preventer stack on the surface of the sea-floor. According to the method and apparatus of this invention, a first honeycomb of bore holes is drilled in the designated bottom area; a second honeycomb of bore holes having diameters larger than the first honey- comb of holes is then drilled into the designated bottom area to produce a second honeycomb of bore holes of larger diameter; and, a bar member is then rotated into the bore hole to eliminate soil structures left standing in the second honeycomb to produce a substantially clear recessed area for receiving the implantable sea-floor cellar to house a blowout preventer stack substantially below the surface of the subsea bottom.
380373
Atwood Oceanics Inc.
Ridout & Maybee Llp
LandOfFree
Method and apparatus for installing a sea-floor cellar in 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 Method and apparatus for installing a sea-floor cellar in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for installing a sea-floor cellar in a... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1000926