WO2002053804A1 - Subsea pipeline power transmission - Google Patents
Subsea pipeline power transmission Download PDFInfo
- Publication number
- WO2002053804A1 WO2002053804A1 PCT/GB2001/005689 GB0105689W WO02053804A1 WO 2002053804 A1 WO2002053804 A1 WO 2002053804A1 GB 0105689 W GB0105689 W GB 0105689W WO 02053804 A1 WO02053804 A1 WO 02053804A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipeline
- power transmission
- anode
- impedance
- impedance means
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/20—Conducting electric current to electrodes
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/31—Immersed structures, e.g. submarine structures
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/32—Pipes
Definitions
- This invention relates to subsea pipeline power transmission systems, methods
- Such pieces of equipment might, for example, be sensors which monitor the integrity or operation of the pipeline system.
- pipeline power transmission system comprising a pipeline, an electrical power supply connected to the pipeline at a first location, and connection means
- the pipeline has a plurality of cathodic protection anodes, each of which is electrically connected via respective impedance means to the pipeline.
- a method of subsea pipeline power transmission along a pipeline having a plurality of cathodic protection anodes comprising the steps of: applying electrical power to the pipeline at a first location; and electrically connecting a load to be supplied to the pipeline at a second location; wherein each anode is electrically connected via respective impedance means to the pipeline.
- apparatus for use in a subsea pipeline power transmission system or method comprising: an anode arrangement comprising, a sacrificial anode arranged for
- impedance means having one terminal connected to the anode and another terminal arranged for connection to said pipeline;
- an electrical power supply arranged for electrical connection to a pipeline.
- anode arrangement for use in a subsea pipeline power transmission system
- a sacrificial anode arranged for mounting on a pipeline and impedance means having one terminal connected to the anode and another terminal arranged for connection to said pipeline.
- the anode arrangement may include further terminals allowing the connection of a load across the impedance means.
- the impedance means may comprise inductance means.
- the impedance means comprises filter means.
- the impedance means, especially when comprising filter means, may be arranged to give a high impedance to time varying signals within one or more selected ranges of frequencies and a low impedance to signals outside the selected range or ranges.
- the means can be arranged so that the real part of the impedance is substantially zero. This means that there is little or no attenuation of the dc components of signals passing through the impedance means.
- the metallic structure is used to carry power currents because these means can be chosen to offer high impedance to the time varying signals used for power supply thereby reducing losses, whilst offering low impedance to the currents used for cathodic protection. Minimising losses is particularly important when
- the drawing shows a subsea pipeline system which comprises a pipeline 1 provided with a plurality of anodes 2 which are electrically connected to the pipeline 1 via respective filter means 3.
- a power supply 4 is electrically connected to the pipeline 1 towards one end.
- This location will typically be at a main facility or some other place provided with good infrastructure such that the provision of a power supply 4 is not problematic.
- the pipeline system is provided with a cathodic protection system of which the anodes 2 form an essential part.
- Cathodic protection currents flowing in the pipeline 1 to improve corrosion resistance will be dc currents.
- each anode is arranged to have substantially zero impedance to dc
- the filter means 3 are arranged to have a very high impedance to the power supply currents delivered by the power supply means
- the power supply means applies a current typically having a frequency in the order of 30 to 100 Hz.
- the filter means 3 are arranged to have a high impedance to signals having the appropriate frequencies in this range.
- the filter means 3 may be designed so that at the transmission frequency it gives an impedance of at least two orders of magnitude greater than the
- the frequency of current used to transmit power is chosen with regard to two
- the frequency at which skin effect begins to compromise performance may be determined empirically on a test length of pipe but can be expected to be in the range of 50 to 100 Hz for most typical pipes.
- loads 5 i.e., pieces of equipment which need electrical power
- a load 5 may, for example, be connected directly to the pipeline 1 and provided with a separate earth terminal E, or may be connected directly across one of the filter means 3 associated with a particular anode 2 where the equipment to be driven is located at or near an anode 2.
- suitable impedance means preferably as in this embodiment filter means 3, between the pipeline 1 and the anode 2 makes a power supply system of this type feasible.
- impedance means 3 preferably as in this embodiment filter means 3
- power supply in this manner might be possible in a subsea pipeline over a distance of say only 300 to 400 metres.
- filter means included, it can be possible to transmit power over a distance of say 10
- this signal may be locally converted into a dc signal using known techniques if this is required.
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002554299A JP2004517592A (en) | 2001-01-03 | 2001-12-20 | Underwater pipeline transmission |
CA2433736A CA2433736C (en) | 2001-01-03 | 2001-12-20 | Subsea pipeline power transmission |
KR10-2003-7008992A KR20030069201A (en) | 2001-01-03 | 2001-12-20 | Subsea pipeline power transmission |
EA200300611A EA200300611A1 (en) | 2001-01-03 | 2001-12-20 | TRANSFER OF ELECTRIC ENERGY IN UNDERWATER PIPES |
BR0116708-1A BR0116708A (en) | 2001-01-03 | 2001-12-20 | Underwater Pipeline Power Transmission |
EP01272502A EP1368510B1 (en) | 2001-01-03 | 2001-12-20 | Subsea pipeline power transmission |
APAP/P/2003/002777A AP2003002777A0 (en) | 2001-01-03 | 2001-12-20 | Subsea pipeline power transmission |
MXPA03005788A MXPA03005788A (en) | 2001-01-03 | 2001-12-20 | Subsea pipeline power transmission. |
NO20033025A NO336079B1 (en) | 2001-01-03 | 2003-07-01 | System and method for power transmission in submarine pipelines |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0100104.9 | 2001-01-03 | ||
GBGB0100104.9A GB0100104D0 (en) | 2001-01-03 | 2001-01-03 | Subsea pipeline power transmission |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002053804A1 true WO2002053804A1 (en) | 2002-07-11 |
Family
ID=9906187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2001/005689 WO2002053804A1 (en) | 2001-01-03 | 2001-12-20 | Subsea pipeline power transmission |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP1368510B1 (en) |
JP (1) | JP2004517592A (en) |
KR (1) | KR20030069201A (en) |
AP (1) | AP2003002777A0 (en) |
BR (1) | BR0116708A (en) |
CA (1) | CA2433736C (en) |
EA (1) | EA200300611A1 (en) |
GB (1) | GB0100104D0 (en) |
MX (1) | MXPA03005788A (en) |
NO (1) | NO336079B1 (en) |
OA (1) | OA12489A (en) |
WO (1) | WO2002053804A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2486687A (en) * | 2010-12-20 | 2012-06-27 | Expro North Sea Ltd | Impressed current cathodic protection systems and monitoring |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3340431A1 (en) * | 2016-12-20 | 2018-06-27 | Koninklijke Philips N.V. | System for impressed current cathodic protection |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0241440A2 (en) * | 1986-02-19 | 1987-10-14 | BAC Bergsöe Anti Corrosion AB | Control system for electrochemical protection on submersible metal structures |
EP0479519A1 (en) * | 1990-10-02 | 1992-04-08 | Petroleo Brasileiro S.A. - Petrobras | Coupling device for pipeline heating system |
US5176807A (en) * | 1989-02-28 | 1993-01-05 | The United States Of America As Represented By The Secretary Of The Army | Expandable coil cathodic protection anode |
US5627414A (en) * | 1995-02-14 | 1997-05-06 | Fordyce M. Brown | Automatic marine cathodic protection system using galvanic anodes |
WO2001004381A1 (en) * | 1999-07-13 | 2001-01-18 | Flight Refuelling Limited | Anode monitoring systems and methods |
-
2001
- 2001-01-03 GB GBGB0100104.9A patent/GB0100104D0/en not_active Ceased
- 2001-12-20 OA OA1200300160A patent/OA12489A/en unknown
- 2001-12-20 MX MXPA03005788A patent/MXPA03005788A/en unknown
- 2001-12-20 CA CA2433736A patent/CA2433736C/en not_active Expired - Lifetime
- 2001-12-20 WO PCT/GB2001/005689 patent/WO2002053804A1/en active Application Filing
- 2001-12-20 KR KR10-2003-7008992A patent/KR20030069201A/en not_active Application Discontinuation
- 2001-12-20 AP APAP/P/2003/002777A patent/AP2003002777A0/en unknown
- 2001-12-20 BR BR0116708-1A patent/BR0116708A/en not_active Application Discontinuation
- 2001-12-20 EP EP01272502A patent/EP1368510B1/en not_active Expired - Lifetime
- 2001-12-20 EA EA200300611A patent/EA200300611A1/en unknown
- 2001-12-20 JP JP2002554299A patent/JP2004517592A/en active Pending
-
2003
- 2003-07-01 NO NO20033025A patent/NO336079B1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0241440A2 (en) * | 1986-02-19 | 1987-10-14 | BAC Bergsöe Anti Corrosion AB | Control system for electrochemical protection on submersible metal structures |
US5176807A (en) * | 1989-02-28 | 1993-01-05 | The United States Of America As Represented By The Secretary Of The Army | Expandable coil cathodic protection anode |
EP0479519A1 (en) * | 1990-10-02 | 1992-04-08 | Petroleo Brasileiro S.A. - Petrobras | Coupling device for pipeline heating system |
US5627414A (en) * | 1995-02-14 | 1997-05-06 | Fordyce M. Brown | Automatic marine cathodic protection system using galvanic anodes |
WO2001004381A1 (en) * | 1999-07-13 | 2001-01-18 | Flight Refuelling Limited | Anode monitoring systems and methods |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2486687A (en) * | 2010-12-20 | 2012-06-27 | Expro North Sea Ltd | Impressed current cathodic protection systems and monitoring |
Also Published As
Publication number | Publication date |
---|---|
GB0100104D0 (en) | 2001-02-14 |
EA200300611A1 (en) | 2003-12-25 |
AP2003002777A0 (en) | 2003-06-30 |
KR20030069201A (en) | 2003-08-25 |
CA2433736C (en) | 2010-04-06 |
OA12489A (en) | 2006-05-24 |
MXPA03005788A (en) | 2003-09-10 |
NO20033025L (en) | 2003-09-03 |
JP2004517592A (en) | 2004-06-10 |
EP1368510B1 (en) | 2012-07-25 |
BR0116708A (en) | 2003-12-23 |
NO336079B1 (en) | 2015-05-04 |
EP1368510A1 (en) | 2003-12-10 |
CA2433736A1 (en) | 2002-07-11 |
NO20033025D0 (en) | 2003-07-01 |
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