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Rigless intervention

a drilling rig and intervention technology, applied in the direction of transportation and packaging, sealing/packing, and well accessories, etc., can solve the problems of high operating cost of drilling rigs, easy damage to sub-sea equipment being retrieved or deployed, and slow transportation of drilling rigs

Inactive Publication Date: 2012-12-13
SHELL OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As such, the piece of sub-sea equipment being retrieved or deployed may be susceptible to being damaged during transportation.
Further, drilling rigs are extremely expensive to operate, costing around $600,000-$800,000 / day to lease and operate.
Furthermore, drilling rigs are transported at a slow rate when compared to other floating vessels (e.g., ships, tug boats), which may increase the amount of time it takes to retrieve and / or deploy sub-sea equipment.

Method used

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  • Rigless intervention
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Examples

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Embodiment Construction

[0015]In one aspect, embodiments disclosed herein relate to a method of retrieving and deploying subsea equipment, such as an electric submersible pump (ESP) caisson. Specifically, embodiments disclosed herein relate to a method of using a workboat and a side deck of a floating production, storage, and offloading vessel (FPSO) to retrieve, deploy, and / or service an ESP.

FIG. 1:

[0016]Referring initially to FIG. 1, a system for attaching a piece of subsea equipment 100 to a workboat 102 according to embodiments of the present disclosure is shown. In this embodiment, a piece of subsea equipment 100 is located at and / or below the mudline 101. When repairs, upgrades, replacement, or other operations known in the art require an installation, retrieval, or other intervention, a workboat 102 may be connected to the piece of subsea equipment 100 via a line 104 and a connector 103. The workboat 102 may include a lifting device 116 such as a crane, winch, hoist or other lifting device known in ...

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PUM

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Abstract

A method comprising providing a first vessel floating on a surface of a body of water; connecting a first line from the first vessel to a subsea structure; lifting the subsea structure within the body of water; connecting a second line from a second vessel to the subsea structure; disconnecting the first line from the subsea structure; and lifting subsea structure to the second vessel with the second line.

Description

BACKGROUND OF INVENTION[0001]1. Field of the Invention[0002]The invention is directed to systems and methods for installing and / or retrieving subsea components without the use of a drilling rig.[0003]2. Background Art[0004]Currently, sub-sea equipment (e.g., submersible pumps, manifolds, and trees) may be deployed and / or retrieved using a semi-submersible drilling rig. Typically, the drilling rigs are configured to hoist the sub-sea equipment from the ocean floor to the surface through the use of cables and lines. Once the sub-sea equipment has reached the surface, it may be lifted through an opening in the center of the rig (e.g., moon pool) and onto the deck of the drilling rig. As such, the piece of sub-sea equipment being retrieved or deployed may be susceptible to being damaged during transportation. Further, drilling rigs are extremely expensive to operate, costing around $600,000-$800,000 / day to lease and operate. Furthermore, drilling rigs are transported at a slow rate when...

Claims

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Application Information

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IPC IPC(8): E02B17/08
CPCE21B41/04B63C7/02E02B17/08E21B19/00E21B33/035E21B33/038E21B33/043E21B33/064
Inventor BYERS, ROBERT LOVEDAVIS, SCOTT WINFIELDGAGE, JASON HUNTERKENNEY, JOHN JOSEPHPRITCHETT, WILLIAM MICHAELVOLKERT, BRUCE CLINTON
Owner SHELL OIL CO