Systems and Methods for Controlling Risers
AssigneeKellogg Brown & Root LLC
InventorJohn Christian Hartley Mungall
Life of this patent
Estimating the term…
Abstract
Systems and methods for controlling movement of an elongated member providing communication between a vessel and a subsea unit are provided. The method can include connecting a positively buoyant member to an elongated member at a first location and connecting a negatively buoyant member to the elongated member at a second location, wherein at least a portion of the negatively buoyant member rests on a seabed when the elongated member is in an operational null position.
Claims20
A method for controlling movement of an elongated member providing communication between a vessel and a subsea unit, comprising:
- connecting a positively buoyant member to an elongated member at a first location;
- and
- connecting a negatively buoyant member to the elongated member at a second location, wherein at least a portion of the negatively buoyant member rests on a seabed when the elongated member is in an operational null position.
A system for controlling movement of an elongated member providing communication between a vessel and a subsea unit, comprising:
- a vessel in communication with a subsea unit, wherein the communication comprises:
- an elongated member;
- a positively buoyant member connected to the elongated member at a first location;
- and
- a negatively buoyant member connected to the elongated member at a second location, wherein a portion of the negatively buoyant member rests on a seabed when the elongated member is in an operational null position.
A system for controlling movement of an elongated member providing communication between a vessel and a subsea unit, comprising:
- an elongated member connected to a vessel at a first end and a subsea unit at a second end, wherein the elongated member comprises:
- a first negatively buoyant region, a weighted region, a first variably buoyant region, a second variably buoyant region, a positively buoyant region, and a second negatively buoyant region;
- wherein the first negatively buoyant region and the weighted region hang below the vessel, wherein the weighted region is intermediate the first negatively buoyant region and the first variably buoyant region;
- and wherein the positively buoyant region is intermediate the second variably buoyant region and the second negatively buoyant region, and wherein the second negatively buoyant region includes the second end of the elongated member;
- a positively buoyant member connected to the elongated member intermediate the first variably buoyant region and the second variably buoyant region;
- and
- a negatively buoyant member attached to the elongated member, wherein at least a portion of the negatively buoyant member rests on a seabed when the elongated member is in an operational null position.
Dependencies are inferred from the claim text.