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Subsea pod pump

a pod pump and subsea technology, applied in underwater drilling, drilling machines and methods, borehole/well accessories, etc., can solve the problems of affecting oil production, reducing the reliability of such equipment, and often non-standard umbilicals

Inactive Publication Date: 2012-07-12
OCEANEERING INTERNATIONAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, umbilicals are often non-standard as they have to be tailored to the specific subsea site.
Field operators are often unable to retrieve susbea modules to service, replace or reconfigure key components utilized in a subsea oil field development, thus decreasing the reliability of such equipment which, in turn, affects oil production.

Method used

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  • Subsea pod pump
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Examples

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Embodiment Construction

[0011]Referring to FIGS. 1-2, in one embodiment system 1 comprises umbilical 10, HPU module 20, chemical injector module 30, accumulator module 40, low pressure hydraulic module 50, high pressure hydraulic module 60, and electrical module 70. In an embodiment, system 1 further comprises subsea umbilical termination module 80. FIGS. 1-2 illustrate deployment of system 1 in a field further comprising surface structure 100, subsea Christmas trees 4a-4d, and other structures for illustration.

[0012]Umbilical 10 may comprise lines 12. As other lines needed for subsea control may originate subsea with system 1, e.g. hydraulic lines 2a-2d and / or electrical control lines 3a-3d, umbilical 10 may be standardized with a set number of lines 12. For example, umbilical 10 may comprise steel tubes, power lines, and fiber optic cables. Further, moving HPU module 20 from the surface, e.g. located at platform 100, to a module subsea may eliminate the need for a hydraulic supply line in umbilical 10.

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Abstract

A subsea oil and gas production Christmas tree control system, serviceable by an ROV subsea, comprises an umbilical and a system controller further comprising an HPU that comprises a manipulatable subsea housing; a subsea hydraulic fluid reservoir; a motor disposed in the housing; and a hydraulic power unit disposed in the housing. Hydrocarbon production may controlled subsea by deploying a modular subsea oil and gas production Christmas tree control system using an ROV; supplying the HPU with hydraulic fluid; providing a predetermined control to a subsea Christmas tree using a Christmas tree control system component; monitoring a Christmas tree control system status; enabling a redundant Christmas tree control system component upon detection of a fault in a Christmas tree control system component paired with the redundant component; and providing status data from the Christmas tree control system to a status data receiver using a data communications link.

Description

PRIORITY [0001]This application claims priority through United States Provisional Application 61 / 413,707 filed Nov. 15, 2010.FIELD OF THE INVENTION[0002]The invention described herein relates a change in the umbilical architecture of most field developments as only low pressure fluids would need to be delivered to the local subsea distribution manifold or subsea tree. The invention more specifically relates to supplying hydraulic power subsea, and more specifically to a subsea hydraulic power unit that uses a biodegradable fluid for hydraulic motive force.BACKGROUND OF THE INVENTION[0003]Typical control umbilicals for subsea field developments contain numerous components such as electrical signal and power wires. The actual amount used and the size of any of these depends on the configuration of the field development. Hydraulic supplies, e.g. pumps and storage, are typically located at a surface location as opposed to subsea, necessitating hydraulic supply lines to be included in a ...

Claims

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Application Information

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IPC IPC(8): E21B43/01E21B43/12
CPCE21B33/0355
Inventor KROHN, DANCUNNINGHAM, MIKEMUNDORFF, JAN
Owner OCEANEERING INTERNATIONAL