Method and apparatus for offshore drilling and well completion
First Claim
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1. FOR USE OFFSHORE, AN ELONGATED TUBULAR CONDUIT INCLUDING AN ELONGATED LOWER TUBULAR MEMBER AND AN ELONGATED UPPER TUBULAR MEMBER CONNECTED TO SAID LOWER MEMBER IN AXIALLY ALIGNED TELESCOPIC RELATIONSHIP, MEANS FOR FIXING THE LOWER END OF SAID LOWER MEMBER AGAINST AXIAL MOVEMENT RELATIVE TO THE OCEAN BOTTOM, MEANS FOR ATTACHING THE UPPER END OF SAID UPPER MEMBER TO A PLATFORM FOR AXIAL MOVEMENT THEREWITH RELATIVE TO SAID LOWER MEMBER, AND ADJUSTABLY VARIABLE FLUID PRESSURE MEANS ON SAID PLATFORM OPERATIVELY CONNECTED TO EXERT A REGULATED SUBSTANTIALLY CONSTANT UPWARD PRESELECTED AXIAL FORCE ON THE UPPER PORTION OF SAID LOWER MEMBER AS SAID UPPER MEMBER MOVES AXIALLY RELATIVE TO SAID LOWER MEMBER WITHIN SELECTED DESIGN LIMITS.
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1 Claim
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1. FOR USE OFFSHORE, AN ELONGATED TUBULAR CONDUIT INCLUDING AN ELONGATED LOWER TUBULAR MEMBER AND AN ELONGATED UPPER TUBULAR MEMBER CONNECTED TO SAID LOWER MEMBER IN AXIALLY ALIGNED TELESCOPIC RELATIONSHIP, MEANS FOR FIXING THE LOWER END OF SAID LOWER MEMBER AGAINST AXIAL MOVEMENT RELATIVE TO THE OCEAN BOTTOM, MEANS FOR ATTACHING THE UPPER END OF SAID UPPER MEMBER TO A PLATFORM FOR AXIAL MOVEMENT THEREWITH RELATIVE TO SAID LOWER MEMBER, AND ADJUSTABLY VARIABLE FLUID PRESSURE MEANS ON SAID PLATFORM OPERATIVELY CONNECTED TO EXERT A REGULATED SUBSTANTIALLY CONSTANT UPWARD PRESELECTED AXIAL FORCE ON THE UPPER PORTION OF SAID LOWER MEMBER AS SAID UPPER MEMBER MOVES AXIALLY RELATIVE TO SAID LOWER MEMBER WITHIN SELECTED DESIGN LIMITS.
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Current AssigneeWilliam Fischer
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Original AssigneeWilliam Fischer
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InventorsFischer, William
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Application NumberUS04/372,061Time in Patent Office1,043 DaysField of SearchUS Class Current166/355CPC Class CodesE21B 17/01 RisersE21B 7/128 from floating support with ...
