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US20130319671A1 - Method and Device for Plugging of a Subsea Well - Google Patents

Method and Device for Plugging of a Subsea Well Download PDF

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Publication number
US20130319671A1
US20130319671A1 US13/879,332 US201113879332A US2013319671A1 US 20130319671 A1 US20130319671 A1 US 20130319671A1 US 201113879332 A US201113879332 A US 201113879332A US 2013319671 A1 US2013319671 A1 US 2013319671A1
Authority
US
United States
Prior art keywords
perforation
inner casing
well
stinger
connection housing
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US13/879,332
Other languages
English (en)
Inventor
Per Lund
Per Buset
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Subsea P&A AS
Original Assignee
Subsea P&A AS
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 Subsea P&A AS filed Critical Subsea P&A AS
Assigned to SUBSEA P&A AS reassignment SUBSEA P&A AS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BUSET, PER, LUND, PER
Publication of US20130319671A1 publication Critical patent/US20130319671A1/en
Abandoned legal-status Critical Current

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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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like

Definitions

  • This invention relates to a method for plugging a subsea well. More particularly, it relates to a method for plugging a subsea well in which there is a wellhead valve arranged at the seabed, the method including:
  • the invention also includes a device for practicing the method.
  • Subsea wells that is to say wells that have been drilled from the seabed, typically petroleum wells, must be securely plugged before they are permanently abandoned. In several countries there are official requirements with respect to how the work is to be carried out and to its completion.
  • GB patent 2414492 discloses how a plugging operation may be performed by perforating a casing and using a two-wiper plug system.
  • the two parts of the two-wiper plug system are closed and released from a tool in a sequence by means of signals from the surface.
  • the method according to this document is unsuitable when a wellhead valve is in position on the well.
  • the invention has for its object to remedy or reduce at least one of the drawbacks of the prior art.
  • a method for plugging a subsea well in which a wellhead valve is arranged at the seabed including:
  • the packer forms part of the stinger, the packer is set after the stinger has been positioned in the inner casing, but before the circulation of cleaning fluid is started.
  • the second perforation may be close to the seabed. It is usual that the filling is performed by means of pumping.
  • the circulation of cleaning fluid may be carried out via the connection housing, the stinger, a portion of the inner casing, the first perforation, the annulus, the second perforation, a portion of the inner casing and back via the connection housing.
  • the packer prevents the cleaning fluid and casting substance from flowing back via the inner casing.
  • the casting substance is supplied via the flow path mentioned, but is stopped when a suitable amount of casting substance has been supplied.
  • the amount of casting substance must be sufficient to ensure that the casting substance fills the necessary length of the annulus.
  • the method may further include removing the packer and the stinger. These may relatively simply be pulled up after the casting substance has set and the packer has been relieved.
  • the method may be practised by means of a plugging tool for plugging a subsea well in which a wellhead valve is arranged at the seabed, the tool being characterized by including a connection housing which fits sealingly between the well and the wellhead valve, the connection housing being formed with a through-going axial bore, a first pipe bore extending from the outside of the connection housing into the bore, and a second pipe bore extending from the outside of the connection housing and communicating with the pipe bore of a casing.
  • connection housing enables fluids in a sufficient amount to be circulated outside the wellhead valve.
  • the tool includes a stinger which is detachably placed in a sealing manner in the connection housing, the stinger communicating with the first pipe bore and with the first perforation.
  • the stinger thus constitutes a pipe connection between the connection housing and the first perforation.
  • the stinger includes an expandable packer which is arranged to seal the pipe bore of the inner casing.
  • At least one of the first pipe bore and the second pipe bore of the connection housing may be in communication with a vessel. Thereby, by means of suitable equipment, fluids for circulation and supply to the well may be pumped down into the well from a vessel.
  • At least one of the first pipe bore and the second pipe bore may be provided with a valve. Normally, there will be a requirement that a pipe bore in the connection housing be secured with at least one shut-off valve.
  • the method and the device in accordance with the invention enable a substantial simplification of plugging operations in wells that have the wellhead valve, the BOP, installed, the invention arranging for sufficient circulation capacity through the well. This, in turn, makes it possible for the plugging to be carried out where there are requirements/regulations on the use of a wellhead valve for work in a well.
  • the plugging may be carried out from a vessel, which means a considerable cost saving compared with using a drilling rig.
  • FIG. 1 shows a principle drawing of a subsea well which is provided with a connection housing according to the invention
  • FIG. 2 shows the same as FIG. 1 , but after a packer has been set and circulation of cleaning fluid may take place;
  • FIG. 3 shows the same as FIG. 2 , but after a casting substance has been supplied to the well.
  • the reference numeral 1 indicates a subsea well extending from the seabed 2 and downwards in the ground 4 .
  • a typical well 1 includes a conductor pipe 6 with at least one casing 8 and an inner casing 10 which is connected to a production tubing 12 by means of a production packer 14 .
  • the areas between a borehole 16 and the different pipes 6 , 8 , 10 and 12 may be filled, at least partially, with substances such as casting substances and sand.
  • the well 1 is otherwise filled with fluid 20 .
  • connection housing 22 is arranged between the well 1 , that is to say one or more of the casings 6 , 8 , 10 in the well 1 , and a wellhead valve 24 .
  • the connection housing 22 is shown as one unit but may comprise various components not shown.
  • a through-going centric bore 26 provides a fluid connection between the wellhead valve 24 and the well 1 .
  • a first pipe bore 28 extends from the outside of the connection housing 22 into the bore 26 .
  • the first pipe bore 28 communicates with a vessel, not shown, via a first valve 30 and a first pipe connection 32 .
  • a second pipe bore 34 extends from the outside of the connection housing 22 and opens into the well 1 .
  • the second pipe bore 34 communicates with the vessel, not shown, via a second valve 36 and a second pipe connection 38 .
  • a perforation tool 40 When the well 1 is to be plugged, a perforation tool 40 is sluiced into the well 1 via the wellhead valve 24 and the connection housing 22 .
  • the perforation tool 40 is shown in two positions for the perforation of a first perforation 42 and a second perforation 44 .
  • the perforation tool 40 is then pulled out of the well 1 before a stinger 46 is moved into the well 1 , see FIG. 2 .
  • the stinger 46 is provided with an expanded packer 48 which, after expansion, seals against the inner casing 10 .
  • the stinger 46 opens below the packer 48 into the inner casing 10 .
  • the stinger 46 is formed with a boss 50 that fits sealingly in the bore 26 of the connection housing 22 .
  • the stinger 46 communicates with the first pipe bore 28 .
  • Circulation fluid for cleaning of an annulus 52 located outside the inner casing 10 may then be circulated via the first pipe connection 32 , the first valve 30 , the first pipe bore 28 , the stinger 46 , the pipe bore of the inner casing 10 , the first perforation 42 , the annulus 52 , the second perforation 44 , the pipe bore of the inner casing 10 , the second pipe bore 34 , the second valve 36 and the second pipe connection 38 .
  • a casting substance 54 is supplied to the well via the flow path mentioned, until a sufficient length of the annulus 52 is filled with the casting substance 54 .
  • a packer may be arranged to keep the casting substance 54 separated from the fluid 20 in the well 1 .
  • a partition is arranged between the casting substance 54 and the fluid 20 in the well 1 by means of so-called balanced flow.
  • the well 1 is plugged.
  • the packer 48 may be relieved and pulled out of the well 1 together with the stinger 44 .
  • the wellhead valve 24 and the connection housing 22 may then be removed.

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Making Paper Articles (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)
US13/879,332 2010-10-26 2011-10-21 Method and Device for Plugging of a Subsea Well Abandoned US20130319671A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20101460A NO332439B1 (no) 2010-10-26 2010-10-26 Fremgangsmåte og anordning for å plugge en undervannsbrønn
NO20101460 2010-10-26
PCT/NO2011/000297 WO2012057631A1 (en) 2010-10-26 2011-10-21 Method and device for plugging of a subsea well

Publications (1)

Publication Number Publication Date
US20130319671A1 true US20130319671A1 (en) 2013-12-05

Family

ID=45994143

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/879,332 Abandoned US20130319671A1 (en) 2010-10-26 2011-10-21 Method and Device for Plugging of a Subsea Well

Country Status (5)

Country Link
US (1) US20130319671A1 (no)
AU (1) AU2011321094A1 (no)
BR (1) BR112013010329A2 (no)
NO (1) NO332439B1 (no)
WO (1) WO2012057631A1 (no)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160024874A1 (en) * 2014-07-25 2016-01-28 Halliburton Energy Services, Inc. Dual barrier perforating system
US9797219B2 (en) 2014-10-23 2017-10-24 Saudi Arabian Oil Company Remedial second-stage cementing packer
US20180100373A1 (en) * 2015-04-22 2018-04-12 Welltec A/S Downhole tool string for plug and abandonment by cutting
NO20170537A1 (en) * 2017-03-31 2018-10-01 Island Offshore Subsea As An arrangement for providing a flowable solidifier into a subsea hydrocarbon well
US10190387B2 (en) * 2013-09-25 2019-01-29 Statoil Petroleum As Method of sealing a well
US10214988B2 (en) 2015-08-12 2019-02-26 Csi Technologies Llc Riserless abandonment operation using sealant and cement
US10378299B2 (en) 2017-06-08 2019-08-13 Csi Technologies Llc Method of producing resin composite with required thermal and mechanical properties to form a durable well seal in applications
US10428261B2 (en) 2017-06-08 2019-10-01 Csi Technologies Llc Resin composite with overloaded solids for well sealing applications
US20230167708A1 (en) * 2021-11-30 2023-06-01 Saudi Arabian Oil Company Tieback casing to workover liner using a crossover

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9488024B2 (en) * 2012-04-16 2016-11-08 Wild Well Control, Inc. Annulus cementing tool for subsea abandonment operation
BR112020002845B1 (pt) * 2017-08-11 2023-04-18 Fmc Technologies, Inc Método e sistema para a formação de um tampão superior em um poço

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556220A (en) * 1969-04-01 1971-01-19 Otis Eng Co Well tools
US4531583A (en) * 1981-07-10 1985-07-30 Halliburton Company Cement placement methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2275282B (en) * 1993-02-11 1996-08-07 Halliburton Co Abandonment of sub-sea wells
GB2305683B (en) * 1993-06-19 1997-10-08 Philip Head A method of abandoning a well
NO981998D0 (no) * 1998-05-04 1998-05-04 Henning Hansen FremgangsmÕte ved flerfaset tettende plugging av borehull benyttet for produksjon av hydrokarboner eller injeksjon av vµsker til nedihulls formasjoner eller unders÷kelsesborehull
GB0218836D0 (en) * 2002-08-14 2002-09-18 Well Worx Ltd Apparatus and method
GB2414492B (en) * 2004-05-26 2008-03-05 U W G Ltd Apparatus and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556220A (en) * 1969-04-01 1971-01-19 Otis Eng Co Well tools
US4531583A (en) * 1981-07-10 1985-07-30 Halliburton Company Cement placement methods

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10190387B2 (en) * 2013-09-25 2019-01-29 Statoil Petroleum As Method of sealing a well
US10480279B2 (en) 2013-09-25 2019-11-19 Statoil Petroleum As Method of sealing a well
US20190178050A1 (en) * 2013-09-25 2019-06-13 Statoil Petroleum As Method of sealing a well
US9689237B2 (en) * 2014-07-25 2017-06-27 Halliburton Energy Services, Inc. Dual barrier perforating system
US20160024874A1 (en) * 2014-07-25 2016-01-28 Halliburton Energy Services, Inc. Dual barrier perforating system
US9797219B2 (en) 2014-10-23 2017-10-24 Saudi Arabian Oil Company Remedial second-stage cementing packer
US10724328B2 (en) * 2015-04-22 2020-07-28 Welltec A/S Downhole tool string for plug and abandonment by cutting
US20180100373A1 (en) * 2015-04-22 2018-04-12 Welltec A/S Downhole tool string for plug and abandonment by cutting
US10214988B2 (en) 2015-08-12 2019-02-26 Csi Technologies Llc Riserless abandonment operation using sealant and cement
WO2018182425A1 (en) * 2017-03-31 2018-10-04 Island Offshore Subsea As An arrangement for providing a flowable solidifier into a subsea hydrocarbon well
NO20170537A1 (en) * 2017-03-31 2018-10-01 Island Offshore Subsea As An arrangement for providing a flowable solidifier into a subsea hydrocarbon well
AU2018246876B2 (en) * 2017-03-31 2020-09-10 Tios As An arrangement for providing a flowable solidifier into a subsea hydrocarbon well
EP3601720A4 (en) * 2017-03-31 2020-11-25 Tios AS ARRANGEMENT TO DELIVER A FLUID SOLIDIFIER INTO AN UNDERWATER HYDROCARBON WELL
US11261688B2 (en) 2017-03-31 2022-03-01 Tios As Arrangement for providing a flowable solidifier into a subsea hydrocarbon well
NO346727B1 (en) * 2017-03-31 2022-12-05 Island Offshore Subsea As An arrangement, a system, and a method for providing a flowable solidifier into a subsea hydrocarbon well
US10378299B2 (en) 2017-06-08 2019-08-13 Csi Technologies Llc Method of producing resin composite with required thermal and mechanical properties to form a durable well seal in applications
US10428261B2 (en) 2017-06-08 2019-10-01 Csi Technologies Llc Resin composite with overloaded solids for well sealing applications
US20230167708A1 (en) * 2021-11-30 2023-06-01 Saudi Arabian Oil Company Tieback casing to workover liner using a crossover
US11668158B1 (en) * 2021-11-30 2023-06-06 Saudi Arabian Oil Company Tieback casing to workover liner using a crossover

Also Published As

Publication number Publication date
NO20101460A1 (no) 2012-04-27
BR112013010329A2 (pt) 2016-09-20
AU2011321094A1 (en) 2013-05-02
WO2012057631A1 (en) 2012-05-03
NO332439B1 (no) 2012-09-17

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SUBSEA P&A AS, NORWAY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LUND, PER;BUSET, PER;REEL/FRAME:031324/0962

Effective date: 20130604

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION