WO2007055592A1 - Dispositif de chauffage d'une conduite de transport d'hydrocarbures - Google Patents

Dispositif de chauffage d'une conduite de transport d'hydrocarbures Download PDF

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Publication number
WO2007055592A1
WO2007055592A1 PCT/NO2006/000410 NO2006000410W WO2007055592A1 WO 2007055592 A1 WO2007055592 A1 WO 2007055592A1 NO 2006000410 W NO2006000410 W NO 2006000410W WO 2007055592 A1 WO2007055592 A1 WO 2007055592A1
Authority
WO
WIPO (PCT)
Prior art keywords
transport line
power
power source
heating
subsea
Prior art date
Application number
PCT/NO2006/000410
Other languages
English (en)
Inventor
Asbjørn ERIKSEN
Geir Aalvik
Original Assignee
Norsk Hydro Produksjon A.S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Norsk Hydro Produksjon A.S filed Critical Norsk Hydro Produksjon A.S
Publication of WO2007055592A1 publication Critical patent/WO2007055592A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
    • E21B36/04—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30—Heating of pipes or pipe systems
    • F16L53/34—Heating of pipes or pipe systems using electric, magnetic or electromagnetic fields, e.g. using induction, dielectric or microwave heating

Definitions

  • the present invention relates in general to oil and gas transport pipe lines, and more particularly to heating of such transport lines, in order to counteract clogging of the pipe interior.
  • European patent application EP 0036322 A1 discloses a similar system based on induction heating, for shorter hydrocarbon transport lines, less than 1 km. Further, Brazilian publication Pl 0101546-OA discloses a pipe induction heating system primarily for local heating, by means of a compact apparatus that can be transported to and used at a spot where a hydrate plug has already formed.
  • the present invention concerns the above described induction heating technique for preventing and removing hydrate plugs from short pipeline lengths and associated equipment like e.g. valves, and concerns more particularly an efficient manner of supplying power for such induction heating.
  • the method and arrangement of the invention are based on using a power source that is free to deliver power to the induction wiring on the hydrocarbon transport line due to a shut-down. It is just when a shut-down occurs, that the need for pipe heating arises, as explained earlier, so using "free" power for this purpose is quite advantageous.
  • Fig. 1 shows a schematic drawing of a preferred system layout for an embodiment of the present invention.
  • a hydrocarbon transport line section 6 appears, equipped with induction wiring 7 along its length.
  • three cables 7 are used, short-circuited at one end of the pipe section to be heated.
  • the pipe section 6 may also be equipped with valves and other details that may also benefit from the heating.
  • the induction cables 7 may be installed simply by seizing with unmagnetic strips, for instance plastic strips.
  • the pipe 6 may be thermally insulated or not, and the induction cables 7 are favourably arranged under the possible thermal insulation layer.
  • the gist of the present invention lies however in the power supply chain leading up to those induction cables.
  • a general indication of a power supply 1 is found to the far left.
  • the box 1 may represent a generator system or simply a line feed from a power grid.
  • Reference numeral 2 indicates a so-called Variable Speed Drive (VSD) that is normally used for feeding power to one or more subsea motors 4.
  • VSD Variable Speed Drive
  • selector switch 3 As indicated by selector switch 3 between the VSD 2 and the motor 4, it is possible to re-route power to the induction cables 7 instead. Particularly when power to motors and other equipment is shut down, there is an increased need for providing extra heat to the transport line so as to avoid hydrate ice plugs.
  • the drawing thus shows a situation where the selector switch 3 has been switched over to route power to the induction heating.
  • the switch 3 is preferably operated automatically by a control signal on a separate line (not shown) on the basis of a control parameter in connection with system operation, so that switching takes place immediately or a predetermined time period after a shutdown. Or, the switch 3 may be operated "manually", for instance by an ROV.
  • an optional transformer 5 is included to provide a suitable voltage for the induction wiring 7.
  • the drawing shows a situation in which power is taken from the normal supply chain to a motor 4, but power may equally well be taken from a power chain leading to another heating system, for instance a system for heating an antisurge loop for a subsea gas compressor.
  • VSD 2 provides a frequency that may be higher than the normal grid frequency of 50 or 60 Hz, actually for motor operation, but such increased frequencies are favourable also for the induction heating system. A higher frequency will give a better heating effect, and the frequency adjustability can also be used to choose between maintenance heating, for preventing forming of plugs, or a high power setting in order to defrost plugs that have already been formed.
  • normal grid frequency may be used also. , , • ,. • • ' ; • '

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

Dans la prévention de formation de bouchons d'hydrate dans une conduite de transport d'hydrocarbures (6) ou dans l'élimination de tels bouchons déjà formés, on utilise un système de chauffage à induction (7). L'électricité acheminée jusqu'au système de chauffage (7) est fournie par le réacheminement de l'électricité provenant d'un bloc d'alimentation (1, 2) libre de distribuer de l'électricité, en raison d'un arrêt d'un système (4) ainsi alimenté normalement .
PCT/NO2006/000410 2005-11-11 2006-11-10 Dispositif de chauffage d'une conduite de transport d'hydrocarbures WO2007055592A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20055358 2005-11-11
NO20055358A NO20055358D0 (no) 2005-11-11 2005-11-11 Arrangement for oppvarming av et hydrokarbon transportror

Publications (1)

Publication Number Publication Date
WO2007055592A1 true WO2007055592A1 (fr) 2007-05-18

Family

ID=35520211

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2006/000410 WO2007055592A1 (fr) 2005-11-11 2006-11-10 Dispositif de chauffage d'une conduite de transport d'hydrocarbures

Country Status (2)

Country Link
NO (1) NO20055358D0 (fr)
WO (1) WO2007055592A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2453125A (en) * 2007-09-25 2009-04-01 Statoil Asa Deadleg
US8893792B2 (en) 2011-09-30 2014-11-25 Baker Hughes Incorporated Enhancing swelling rate for subterranean packers and screens
US9010428B2 (en) 2011-09-06 2015-04-21 Baker Hughes Incorporated Swelling acceleration using inductively heated and embedded particles in a subterranean tool
WO2016066968A1 (fr) * 2014-10-31 2016-05-06 Saipem S.A. Station de chauffage de fluides circulant dans un reseau de conduites sous-marines
GB2582178A (en) * 2019-03-15 2020-09-16 Acergy France SAS Subsea installations comprising heated conduits
WO2022013757A1 (fr) * 2020-07-13 2022-01-20 Fmc Technologies Do Brasil Ltda Système de chauffage par induction sous-marin et procédé associé
US12018798B2 (en) 2016-06-09 2024-06-25 Aker Solutions Limited Method for hydrate control

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4589434A (en) * 1985-06-10 1986-05-20 Exxon Production Research Co. Method and apparatus to prevent hydrate formation in full wellstream pipelines
US6049657A (en) * 1996-03-25 2000-04-11 Sumner; Glen R. Marine pipeline heated with alternating current
WO2001071157A1 (fr) * 2000-03-17 2001-09-27 Halliburton Energy Services, Inc. Appareil de completion de puits souterrain comportant un systeme de debit, et procedes associes
WO2002016732A1 (fr) * 2000-08-23 2002-02-28 Fmc Corporation Source de chaleur auto-regulatrice pour equipement sous marin
US6617556B1 (en) * 2002-04-18 2003-09-09 Conocophillips Company Method and apparatus for heating a submarine pipeline

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4589434A (en) * 1985-06-10 1986-05-20 Exxon Production Research Co. Method and apparatus to prevent hydrate formation in full wellstream pipelines
US6049657A (en) * 1996-03-25 2000-04-11 Sumner; Glen R. Marine pipeline heated with alternating current
WO2001071157A1 (fr) * 2000-03-17 2001-09-27 Halliburton Energy Services, Inc. Appareil de completion de puits souterrain comportant un systeme de debit, et procedes associes
WO2002016732A1 (fr) * 2000-08-23 2002-02-28 Fmc Corporation Source de chaleur auto-regulatrice pour equipement sous marin
US6617556B1 (en) * 2002-04-18 2003-09-09 Conocophillips Company Method and apparatus for heating a submarine pipeline

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2453125A (en) * 2007-09-25 2009-04-01 Statoil Asa Deadleg
GB2453125B (en) * 2007-09-25 2012-02-08 Statoilhydro Asa Deadleg
US9297237B2 (en) 2007-09-25 2016-03-29 Statoil Petroleum As Deadleg
US9010428B2 (en) 2011-09-06 2015-04-21 Baker Hughes Incorporated Swelling acceleration using inductively heated and embedded particles in a subterranean tool
US8893792B2 (en) 2011-09-30 2014-11-25 Baker Hughes Incorporated Enhancing swelling rate for subterranean packers and screens
FR3028131A1 (fr) * 2014-10-31 2016-05-06 Saipem Sa Station de chauffage de fluides circulant dans un reseau de conduites sous-marines
WO2016066968A1 (fr) * 2014-10-31 2016-05-06 Saipem S.A. Station de chauffage de fluides circulant dans un reseau de conduites sous-marines
US10816123B2 (en) 2014-10-31 2020-10-27 Saipem S.A. Station for heating fluids flowing through a network of submarine pipelines
US12018798B2 (en) 2016-06-09 2024-06-25 Aker Solutions Limited Method for hydrate control
GB2582178A (en) * 2019-03-15 2020-09-16 Acergy France SAS Subsea installations comprising heated conduits
WO2020188362A2 (fr) 2019-03-15 2020-09-24 Acergy France SAS Installations sous-marines comprenant des conduits chauffés
GB2582178B (en) * 2019-03-15 2021-07-14 Acergy France SAS Subsea installations comprising heated conduits
US11808114B2 (en) 2019-03-15 2023-11-07 Acergy France SAS Subsea installations comprising heated conduits
WO2022013757A1 (fr) * 2020-07-13 2022-01-20 Fmc Technologies Do Brasil Ltda Système de chauffage par induction sous-marin et procédé associé

Also Published As

Publication number Publication date
NO20055358D0 (no) 2005-11-11

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