Multi-purpose coiled tubing handling system
AssigneeSchlumberger Technology Corporation
InventorsBartley J. Patton, Shampine Rod, Nikki Hobbs, Terry McCafferty, Robin Mallalieu
Life of this patent
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Abstract
A system for reducing the effects of heave movements of a wellhead in an offshore drilling device is provided that includes a frame; a coiled tubing stack supported by the frame; and a heave compensation system for controlling an amount of load transferred from the coiled tubing stack to the wellhead to reduce relative movements between the coiled tubing stack and the wellhead.
Claims14
A system for reducing the effects of heave movements of a wellhead in an offshore drilling device comprising:
- a frame;
- a coiled tubing stack supported by the frame;
- a heave compensation system for controlling an amount of load transferred from the coiled tubing stack to the wellhead to reduce relative movements between the coiled tubing stack and the wellhead;
- a flexible riser section for connecting the coiled tubing stack to the wellhead in a manner that allows for angular misalignment between the coiled tubing stack and the wellhead;
- and
- a system for monitoring the load on the wellhead and activating the heave compensation system when predetermined load limits are exceeded.
A method of reducing the effects of heave movements of a wellhead in an offshore drilling device comprising:
- providing a frame which supports a coiled tubing stack;
- positioning the frame proximate to the wellhead;
- providing a heave compensation system for controlling an amount of load transferred from the coiled tubing stack to the wellhead to reduce relative movements between the coiled tubing stack and the wellhead;
- monitoring the load on the wellhead;
- and
- activating the heave compensation system when predetermined load limits on the wellhead are exceeded.
A system for reducing the effects of heave movements of a wellhead in an offshore drilling device comprising:
- a frame;
- a coiled tubing stack supported by the frame;
- and
- a heave compensation system for controlling an amount of load transferred from the coiled tubing stack to the wellhead to reduce relative movements between the coiled tubing stack and the wellhead.
Dependencies are inferred from the claim text.