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US 4,174,011 AGranted
Subsea drilling template with carousel guidance system
AssigneeStandard Oil Company (Indiana)
InventorHubart B. Zaremba
Life of this patent
Estimating the term…
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AssigneeStandard Oil Company (Indiana)
InventorHubart B. Zaremba
Estimating the term…
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.
A drilling guidance carousel for use in driling underwater wells from a floating vessel which comprises
A sea floor template for use with a guidance system for drilling underwater wells from a floating vessel which comprises:
A sea floor template and drilling guidance carousel for use in drilling wells in the bottom of the body of water which comprises:
A drilling guidance carousel for use in drilling underwater wells from a floating vessel which comprises:
Dependencies are inferred from the claim text.