Subsea drilling template with carousel guidance system

Details Subsea drilling template with carousel guidance system Subsea drilling template with carousel guidance system

1977-09-12

1979-11-13

Purser, Ernest R.

Boring or penetrating the earth

Boring a submerged formation

Boring from floating support with submerged independent...

166366, 166341, E21B 1502

Patent

active

041740114

ABSTRACT:
A sea floor template with vertical well guides or slots is lowered to the sea floor. Guide rails, such as a railroad track, are supported on top of the frame of the template in a path which extends along each well slot. A drilling guidance carousel is lowered to the template. Rollers on the drilling guidance carousel engage guide rails so that the carousel can be moved to each template well slot. Guidelines extend from the drilling guidance carousel to a floating drilling vessel for guiding drilling equipment from the vessels down through the template well slot which is aligned with the carousel well slot. Preferably, the template well slots are arranged in a circle at each corner of a rectangular sea floor template. The guide rails are arranged concentrically with the central axis of the circle of template well slots. Locking means are provided to hold the carousel drilling frame well slot aligned with any selected one of the well slots in the sea floor template.

REFERENCES:
patent: 3308881 (1967-03-01), Chan et al.
patent: 3500906 (1970-03-01), Petersen
patent: 3542125 (1970-11-01), Sizer
patent: 3777812 (1973-12-01), Burkhardt et al.
patent: 3789921 (1974-02-01), De Chassy et al.
patent: 3987638 (1976-10-01), Burkhardt et al.
patent: 4068729 (1978-01-01), Peevey

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