E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/15
E21B 7/12 (2006.01)
Patent
CA 1100938
SUBSEA DRILLING TEMPLATE WITH CAROUSEL GUIDANCE SYSTEM ABSTRACT OF THE DISCLOSURE A sea floor template with vertical well guides or slots is low- ered to the sea floor. Guide rails, such as a railroad track, are sup- ported 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 cen- tral axis of the circle of template well slots. Locking means are pro- vided to hold the carousel drilling frame well slot aligned with any selected one of the well slots in the sea floor template.
363366
Gowling Lafleur Henderson Llp
Standard Oil Company
LandOfFree
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