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Cable installation in underwater well device

A cable and line technology, which is applied in the direction of cable installation, cable installation, and cable installation devices in underground pipelines, and can solve problems such as replacing expensive umbilicals.

Inactive Publication Date: 2012-02-29
VETCO GRAY CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although an alternative solution is taught in UK Patent Application No. 0921858.7, currently the only solution to these problems is to replace the very expensive umbilical cord

Method used

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  • Cable installation in underwater well device
  • Cable installation in underwater well device
  • Cable installation in underwater well device

Examples

Experimental program
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Embodiment Construction

[0021] In the following embodiments, insulated cables are pumped down a standby, backup or active chemical or hydraulic control line conduit. The cable may have one, two (for return lines) or more cores and may be used to deliver electrical power and / or data to and / or from the subsea production facility. Fiber optic cables may also be included in the cable to provide replacement or additional communication links. This embodiment allows for additional electrical power and / or communication capacity to a mature oil field (Brownfield) site, or provides additional electrical and / or communication equipment to upgraded fluid production facilities.

[0022] First refer to figure 1 , at the surface of the subsea hydrocarbon well installation, various gas and / or fluid and / or chemical supply pipelines 1, 2 and 3 (only three are shown as examples) within the umbilical 4 and power and / or Communication cables (not shown) are terminated with connectors 5 . The connectors 5 are coupled wit...

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PUM

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Abstract

A method of installing a cable (9) between a topside location (7) of an underwater well device and an underwater location (16) of the device. The method comprises inserting an end of the cable into a passageway (8, 3, 20) between the locations and using a fluid passed along the passageway to displace the cable along the passageway so that it extends between said locations.

Description

technical field [0001] The present invention relates to the installation of cables in subsea well installations. Background technique [0002] In subsea hydrocarbon well installations, umbilicals deliver power and fluids from surface platforms to subsea fluid production facilities. Originally intended for backup purposes, umbilicals typically have redundant or back-up piping within them for chemical and hydraulic control lines. [0003] Over time, the insulation surrounding the copper cores of the cables in the umbilical may degrade, for example, through water intrusion or chemical degradation. The core itself can also typically degrade through corrosion. Such degradation can result in a reduction in the electrical capacity of the core so that insufficient power is available to the well and the well cannot operate adequately. An alternative possibility is to upgrade the well installation with additional equipment requiring additional power not available with existing powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G9/02H02G9/06
CPCE21B23/08H02G1/086H02G1/10
Inventor N·J·埃尔森P·维亚斯
Owner VETCO GRAY CONTROLS