[go: up one dir, main page]

WO2011074981A1 - Method and device for closing a well - Google Patents

Method and device for closing a well Download PDF

Info

Publication number
WO2011074981A1
WO2011074981A1 PCT/NO2010/000459 NO2010000459W WO2011074981A1 WO 2011074981 A1 WO2011074981 A1 WO 2011074981A1 NO 2010000459 W NO2010000459 W NO 2010000459W WO 2011074981 A1 WO2011074981 A1 WO 2011074981A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting tool
well
casing
cutting
accordance
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.)
Ceased
Application number
PCT/NO2010/000459
Other languages
French (fr)
Inventor
Svein H. SØLVERSEN
Per Lund
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.)
Norse Cutting and Abandonment AS
Original Assignee
Norse Cutting and Abandonment 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 Norse Cutting and Abandonment AS filed Critical Norse Cutting and Abandonment AS
Priority to EP10837944A priority Critical patent/EP2513414A1/en
Priority to US13/516,882 priority patent/US20120279706A1/en
Priority to AU2010330957A priority patent/AU2010330957A1/en
Priority to BR112012014203A priority patent/BR112012014203A2/en
Publication of WO2011074981A1 publication Critical patent/WO2011074981A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/06—Cutting windows, e.g. directional window cutters for whipstock operations
    • 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
    • E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
    • E21B33/146—Stage cementing, i.e. discharging cement from casing at different levels

Definitions

  • This invention relates to a method of closing a well in the ground. More particularly, it relates to a method of closing a well in the ground, the well being provided with casing.
  • the invention also includes a device for practising the method.
  • each pressure-bearing zone it is usual to place at least two independent barriers including a suitable plugging material which is arranged to seal the well. In some cases it is necessary to remove a section in the longitudinal
  • the casing material is machined away by means of a hard-metal blade which is arranged on a pipe string.
  • the pipe string is connected to a drilling vessel or an installation with the necessary drilling
  • Chips from the machining must be transported up to the surface because the chips, which may be magnetic and may include relatively long chip coils, prevent tools from passing the portion if the chips are not removed. Machining the longitudinal portion away from the casing by means of the prior art may take several days and is a very expensive operation.
  • the invention has for its object to remedy or reduce at least one of the drawbacks of the prior art .
  • the curable mass present in the casing forms a plug.
  • the plug is permanent and seals against the formation.
  • a cutting tool is meant, in this connection, a tool which is arranged to make cuts through the pipe wall as opposed to machining tools which are arranged to remove pipe material by chipping.
  • the method may include cutting the openings by means of a fluid jet.
  • a fluid jet By using a fluid jet, the further induction of magnetic forces into the pipe wall pieces is avoided.
  • the pipe wall pieces cut out may be allowed to fall down and remain in the well.
  • the pipe wall pieces may be carried to the surface, for example by means of a magnet.
  • the method may further include the preparatory actions of:
  • the method may further include connecting the cutting tool to the surface by means of coiled tubing.
  • the method thereby makes it possible for the well to be shut down without the use of a drilling rig.
  • the method can be practised by means of a cutting tool for cutting the longitudinal portion of a casing, the cutting tool including a nozzle head rotatable around its
  • the nozzle head being connected to coiled tubing, the coiled tubing extending to the surface, and the cutting tool being connected to the casing by means of an anchor.
  • the anchor may be a fixed anchor or a rolling anchor and the cutting. tool may be provided with an actuator for moving the nozzle head axially.
  • the actuator may be used for axial movement of the nozzle head during the cutting operation. If a rolling anchor is used, the coiled tubing can be moved axially in the well without the use of a separate actuator.
  • the cutting head may be provided with a pendulum nozzle.
  • the pendulum nozzle which is of a design known per se, is arranged to pivot the fluid jet while the nozzle head is kept stationary.
  • the cutting tool may be provided with a change-over valve which is arranged to selectably connect a fluid flow to a desired nozzle.
  • the fluid flow may be directed to a cutting nozzle during the cutting operation and then directed to a cleaning nozzle during a subsequent cleaning operation.
  • the method and device according to the invention enable a considerable reduction in the time spent on closing petroleum wells while, at the same time, considerably simpler equipment may be used compared with the prior art . ;
  • the invention thereby provides for a substantial reduction in costs
  • Figure 1 shows schematically a well which has been prepared for a cutting operation according to the invention
  • Figure 2 shows schematically a section, on a larger scale, of a cutting head
  • Figure 3 shows a cutting pattern in the wall of the casing
  • Figure 4 shows schematically, on a smaller scale, a well
  • the reference numeral 1 indicates a petroleum well in a formation 2.
  • An inner casing 4, a second-inner casing 6 and other casings 8 are cemented into a borehole 10 by means of a cementation mass 12.
  • a seal 14 seals between the inner casing 4 and the second- inner casing 6.
  • FIG 1 the well 1 is shown after preparatory work has been carried out, such as filling the lower portion of the inner casing 4 with filler 16, cutting the inner casing 4 and removing the upper portion, not shown, of the inner casing 4 from the well 1.
  • Coiled tubing 18 with a cutting tool 20 fitted is in the well 1, the cutting tool 20 being positioned and held fixed in the second-inner casing 6 by means of an anchor 22.
  • the cutting tool 20 includes a tool housing 24 with necessary components known per se, not shown, for controlling the cutting operation.
  • An actuator 26 is arranged to move a rotatable nozzle head 28 in the longitudinal direction of the well 1.
  • the nozzle head 28 includes a change-over valve 30 for selectably directing pressure fluid which is supplied via an actuator channel 32 from the coiled tubing 18 to a cutting nozzle 34 or a cleaning nozzle 36, see figure 2.
  • the change-over valve 30 may be a so-called sequence valve which changes its position every time the fluid pressure is relieved.
  • the cutting may be started by fluid containing abrasive material flowing to the cutting nozzle 34 at relatively high pressure via the coiled tubing 18 and the change-over valve 30.
  • the nozzle head 28 is brought to move the cutting nozzle 34 along a predetermined path giving, for example, the cutting path 38 in the pipe wall 40 of the second-inner casing 6 so that an opening 42 is cut, see figures 3 and 4. After that, the desired number of openings 42 may be cut.
  • the pipe wall pieces 44 that are formed may be given a suitable size.
  • the openings 42 in the second-inner casing 6 may extend across a
  • the part of the cementation mass 12 that may be behind the longitudinal portion 46 of the second-inner casing 6 is also removed via the openings 42 by means of fluid jets from the nozzles 34, 36 of the nozzle head 28.
  • a curable mass is then filled into the second-inner casing 6.
  • the mass flows through the openings 42 and in between the second-inner casing 6 and the formation 2. Thereby a plug is formed, closing the cross section of the borehole 40.
  • the longitudinal portion 46 may be chosen in a location in which openings will have to be cut in two or more casings 6, 8, one outside another, to give access to the formation 2.

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)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Earth Drilling (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Road Repair (AREA)

Abstract

Abstract A method and device for closing a well (1) in a formation (2) in the ground in which casing (4, 6, 8) is arranged, the method including: - moving a cutting tool (20) down into the well (1); - cutting openings (42) across a longitudinal portion (46) of the casing (4, 6, 8); - removing the cutting tool (20); and - filling a curable mass into the casing (4, 6, 8), the curable mass flowing through the openings (42), filling a space between the casing (4, 6, 8) and the formation (2).

Description

METHOD MID DEVICE FOR CLOSING A WELL
This invention relates to a method of closing a well in the ground. More particularly, it relates to a method of closing a well in the ground, the well being provided with casing. The invention also includes a device for practising the method.
When the production from a well in the ground, typically a petroleum well, has been terminated, it is necessary to close the well in a way that protects against future outflow of well fluid from the well, among other things.
Above each pressure-bearing zone it is usual to place at least two independent barriers including a suitable plugging material which is arranged to seal the well. In some cases it is necessary to remove a section in the longitudinal
direction of a casing for a barrier or a plug to be placed against the formation wall.
According to the prior art, the casing material is machined away by means of a hard-metal blade which is arranged on a pipe string. The pipe string is connected to a drilling vessel or an installation with the necessary drilling
equipment. Chips from the machining must be transported up to the surface because the chips, which may be magnetic and may include relatively long chip coils, prevent tools from passing the portion if the chips are not removed. Machining the longitudinal portion away from the casing by means of the prior art may take several days and is a very expensive operation.
The invention has for its object to remedy or reduce at least one of the drawbacks of the prior art .
The object is achieved in accordance with the invention through the features which are specified in the description below and in the claims that follow.
A method is provided for closing a well in a formation in the ground, wherein casing is arranged, and wherein the method includes :
- moving a cutting tool down into the well;
- cutting openings in the pipe wall across a longitude- nal portion of the casing;
- removing the cutting tool; and
- filling a curable mass into the casing, the curable mass flowing through the openings, filling a space between the casing and the formation.
Together with the mass present in the space between the casing and the formation, the curable mass present in the casing forms a plug. The plug is permanent and seals against the formation.
By a cutting tool is meant, in this connection, a tool which is arranged to make cuts through the pipe wall as opposed to machining tools which are arranged to remove pipe material by chipping.
By cutting pipe wall pieces from the longitudinal portion, the production of voluminous chips is avoided while at the same time the pipe wall pieces are relatively easy to handle. Further, the method may include cutting the openings by means of a fluid jet. By using a fluid jet, the further induction of magnetic forces into the pipe wall pieces is avoided. The pipe wall pieces cut out may be allowed to fall down and remain in the well. If desired, the pipe wall pieces may be carried to the surface, for example by means of a magnet.
The method may further include the preparatory actions of:
- filling the lower portion of the well with filler;
- cutting an inner casing at a lower position in the well than the position at which the longitudinal portion is located; and
- removing the upper portion of the inner casing.
The method may further include connecting the cutting tool to the surface by means of coiled tubing. The method thereby makes it possible for the well to be shut down without the use of a drilling rig.
The method can be practised by means of a cutting tool for cutting the longitudinal portion of a casing, the cutting tool including a nozzle head rotatable around its
longitudinal axis, with at least one nozzle, the nozzle head being connected to coiled tubing, the coiled tubing extending to the surface, and the cutting tool being connected to the casing by means of an anchor.
The anchor may be a fixed anchor or a rolling anchor and the cutting. tool may be provided with an actuator for moving the nozzle head axially.
In an embodiment in which the anchor is fixed, the actuator may be used for axial movement of the nozzle head during the cutting operation. If a rolling anchor is used, the coiled tubing can be moved axially in the well without the use of a separate actuator. In a further embodiment the cutting head may be provided with a pendulum nozzle. The pendulum nozzle, which is of a design known per se, is arranged to pivot the fluid jet while the nozzle head is kept stationary.
The cutting tool may be provided with a change-over valve which is arranged to selectably connect a fluid flow to a desired nozzle. For example, the fluid flow may be directed to a cutting nozzle during the cutting operation and then directed to a cleaning nozzle during a subsequent cleaning operation.
The method and device according to the invention enable a considerable reduction in the time spent on closing petroleum wells while, at the same time, considerably simpler equipment may be used compared with the prior art . ; The invention thereby provides for a substantial reduction in costs
connected with closing and finishing off wells.
In what follows is described an example of a preferred embodiment which is visualized in the accompanying drawings, in which:
Figure 1 shows schematically a well which has been prepared for a cutting operation according to the invention;
Figure 2 shows schematically a section, on a larger scale, of a cutting head;
Figure 3 shows a cutting pattern in the wall of the casing;
Figure 4 shows schematically, on a smaller scale, a well
prepared for grouting; and gure 5 shows the well after grouting
In the drawings the reference numeral 1 indicates a petroleum well in a formation 2. An inner casing 4, a second-inner casing 6 and other casings 8 are cemented into a borehole 10 by means of a cementation mass 12.
A seal 14 seals between the inner casing 4 and the second- inner casing 6.
In figure 1 the well 1 is shown after preparatory work has been carried out, such as filling the lower portion of the inner casing 4 with filler 16, cutting the inner casing 4 and removing the upper portion, not shown, of the inner casing 4 from the well 1.
Coiled tubing 18 with a cutting tool 20 fitted is in the well 1, the cutting tool 20 being positioned and held fixed in the second-inner casing 6 by means of an anchor 22.
The cutting tool 20 includes a tool housing 24 with necessary components known per se, not shown, for controlling the cutting operation. An actuator 26 is arranged to move a rotatable nozzle head 28 in the longitudinal direction of the well 1.
In this preferred embodiment, the nozzle head 28 includes a change-over valve 30 for selectably directing pressure fluid which is supplied via an actuator channel 32 from the coiled tubing 18 to a cutting nozzle 34 or a cleaning nozzle 36, see figure 2.
The change-over valve 30 may be a so-called sequence valve which changes its position every time the fluid pressure is relieved.
When the cutting tool 20 is positioned in the well 1, the cutting may be started by fluid containing abrasive material flowing to the cutting nozzle 34 at relatively high pressure via the coiled tubing 18 and the change-over valve 30.
The nozzle head 28 is brought to move the cutting nozzle 34 along a predetermined path giving, for example, the cutting path 38 in the pipe wall 40 of the second-inner casing 6 so that an opening 42 is cut, see figures 3 and 4. After that, the desired number of openings 42 may be cut.
Through the choice of a cutting pattern, the pipe wall pieces 44 that are formed may be given a suitable size. The openings 42 in the second-inner casing 6 may extend across a
longitudinal portion 46.
By switching the change-over valve 30, pressure fluid is carried to the cleaning nozzle 36, whereby the pipe wall pieces 44 can be washed down or into the well 1.
The part of the cementation mass 12 that may be behind the longitudinal portion 46 of the second-inner casing 6 is also removed via the openings 42 by means of fluid jets from the nozzles 34, 36 of the nozzle head 28.
After the cutting work in the well 1 is finished, the coiled tubing 18 and the cutting tool 20 are pulled out of the well 1. The longitudinal portion 46 is thereby prepared for grouting, see figure 4.
A curable mass is then filled into the second-inner casing 6. The mass flows through the openings 42 and in between the second-inner casing 6 and the formation 2. Thereby a plug is formed, closing the cross section of the borehole 40.
In an alternative method, not shown, the longitudinal portion 46 may be chosen in a location in which openings will have to be cut in two or more casings 6, 8, one outside another, to give access to the formation 2.

Claims

P a t e n t c l a i m s
A method of closing a well (1) in a formation (2) in the ground in which casing (4, 6, 8) is arranged, the method including:
- moving a cutting tool (20) down into the well (1) ;
- cutting openings (42) across a longitudinal portion (46) of the casing (4, 6, 8) ;
- removing the cutting tool (20), c h a r a c t e r i z e d i n that the method further includes filling a curable mass into the casing (4, 6, 8), the curable mass flowing through the openings (42) , filling a space between the casing (4, 6, 8) and the formation (2) to form a full cross-sectional plug.
The method in accordance with claim 1, c h a r a c t e r i z e d i n that the method further includes cutting the openings (42) by means of a fluid jet.
The method in accordance with claim 1, c h a r a c t e r i z e d i n that the method further includes letting the pipe wall pieces (44) remain in the well (1) .
The method in accordance with claim 1, c h a r a c t e r i z e d i n that the method further includes the preparatory actions of:
- filling the lower portion of the well (1) with filler (16) ;
- cutting an inner casing (4) at a lower position in the well (1) than the position at which the
longitudinal portion (46) is located; and
- removing the upper portion of the inner casing (4) .
The method in accordance with claim 1, c h a r a c t e r i z e d i n that the method further includes connecting the cutting tool (20) to the surface by means of coiled tubing (18) .
6. A cutting tool (20) for practising the method
according to claim 1, c h a r a c t e r i z e d i n that the cutting tool (20) includes a nozzle head (28) rotatable around its longitudinal axis, with at least one nozzle (34, 36), the nozzle head (28) being connected to coiled tubing (18) , the coiled tubing (18) extending to the surface, and the cutting tool (20) being connected to the casing (4, 6, 8) by means of an anchor (22) .
7. The cutting tool (20) in accordance with claim 6,
c ha r a c t e r i z e d i n that the anchor (22) is a rolling anchor.
8. The cutting tool (20) in accordance with claim 6,
c h a r a c t e r i z e d i n that the cutting tool (20) is provided with an actuator (26) for moving the nozzle head (28) axially.
9. The cutting tool (20) in accordance with claim 6,
c h a r a c t e r i z e d i n that the nozzle head (28) is provided with a pendulum nozzle.
10. The cutting tool (20) in accordance with claim 6,
c h a r a c t e r i z e d i n that the cutting tool (20) is provided with a change-over valve (30) which is arranged to selectably connect a fluid flow to a desired nozzle (34, 36).
PCT/NO2010/000459 2009-12-17 2010-12-14 Method and device for closing a well Ceased WO2011074981A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP10837944A EP2513414A1 (en) 2009-12-17 2010-12-14 Method and device for closing a well
US13/516,882 US20120279706A1 (en) 2009-12-17 2010-12-14 Method and device for closing a well
AU2010330957A AU2010330957A1 (en) 2009-12-17 2010-12-14 Method and device for closing a well
BR112012014203A BR112012014203A2 (en) 2009-12-17 2010-12-14 method and device for closing a well

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20093545 2009-12-17
NO20093545A NO20093545A1 (en) 2009-12-17 2009-12-17 Method and apparatus for closing a well in the ground

Publications (1)

Publication Number Publication Date
WO2011074981A1 true WO2011074981A1 (en) 2011-06-23

Family

ID=44167516

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2010/000459 Ceased WO2011074981A1 (en) 2009-12-17 2010-12-14 Method and device for closing a well

Country Status (6)

Country Link
US (1) US20120279706A1 (en)
EP (1) EP2513414A1 (en)
AU (1) AU2010330957A1 (en)
BR (1) BR112012014203A2 (en)
NO (1) NO20093545A1 (en)
WO (1) WO2011074981A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013115652A1 (en) * 2012-02-03 2013-08-08 Hydra Systems As A method for establishment of an annulus barrier in a subterranean well
US9194200B2 (en) 2011-11-15 2015-11-24 Leif Invest As Apparatus and method for cutting and pulling of a casing
US9670730B2 (en) 2012-02-17 2017-06-06 Hydra Systems As Method of providing mechanical stability around an entrance of a new well path to be formed from an existing well
US10301904B2 (en) 2013-09-06 2019-05-28 Hydra Systems As Method for isolation of a permeable zone in a subterranean well

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO332901B1 (en) * 2009-11-10 2013-01-28 Norse Cutting & Abandonment As Method and apparatus for closing a well in the ground
AU2013406213B2 (en) * 2013-11-27 2017-08-03 Halliburton Energy Services, Inc. Removal of casing slats by cutting casing collars
NO20140209A1 (en) 2014-02-18 2015-06-29 Well Tech As Hydraulic cutting tool, system and method for controlled hydraulic cutting through a pipe wall in a well, as well as applications of the cutting tool and the system
DE112015006986T5 (en) 2015-12-03 2018-06-14 Halliburton Energy Services, Inc. Pipeline removal system
NO345811B1 (en) * 2018-07-10 2021-08-16 Hydra Systems As A method of performing abrasive perforation and washing in a well

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2305683A (en) * 1993-06-19 1997-04-16 Philip Head Method of abandoning a well
US6478088B1 (en) * 1998-05-04 2002-11-12 Norse Cutting & Abandonment A/S Method for the formation of a plug in a petroleum well
WO2004016901A1 (en) * 2002-08-14 2004-02-26 Well-Worx Limited Well abandonment apparatus
WO2006053248A2 (en) * 2004-11-12 2006-05-18 Alberta Energy Partners Method and apparatus for jet-fluid abrasive cutting
WO2009122203A1 (en) * 2008-04-05 2009-10-08 Well Ops Uk Ltd Method of creating an underwater cutting zone, and related plugging devices and methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249055A (en) * 1965-10-04 1966-05-03 Petroleum Res Corp Pump
US5667010A (en) * 1995-03-21 1997-09-16 Steelhead Reclamation Ltd. Process and plug for well abandonment
GB0128667D0 (en) * 2001-11-30 2002-01-23 Weatherford Lamb Tubing expansion
NO325291B1 (en) * 2004-03-08 2008-03-17 Reelwell As Method and apparatus for establishing an underground well.
US10119377B2 (en) * 2008-03-07 2018-11-06 Weatherford Technology Holdings, Llc Systems, assemblies and processes for controlling tools in a well bore

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2305683A (en) * 1993-06-19 1997-04-16 Philip Head Method of abandoning a well
US6478088B1 (en) * 1998-05-04 2002-11-12 Norse Cutting & Abandonment A/S Method for the formation of a plug in a petroleum well
WO2004016901A1 (en) * 2002-08-14 2004-02-26 Well-Worx Limited Well abandonment apparatus
WO2006053248A2 (en) * 2004-11-12 2006-05-18 Alberta Energy Partners Method and apparatus for jet-fluid abrasive cutting
WO2009122203A1 (en) * 2008-04-05 2009-10-08 Well Ops Uk Ltd Method of creating an underwater cutting zone, and related plugging devices and methods

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9194200B2 (en) 2011-11-15 2015-11-24 Leif Invest As Apparatus and method for cutting and pulling of a casing
WO2013115652A1 (en) * 2012-02-03 2013-08-08 Hydra Systems As A method for establishment of an annulus barrier in a subterranean well
AU2013215699B2 (en) * 2012-02-03 2016-12-15 Hydra Systems As A method for establishment of an annulus barrier in a subterranean well
US9702216B2 (en) 2012-02-03 2017-07-11 Hydra Systems As Method for establishment of an annulus barrier in a subterranean well
US9670730B2 (en) 2012-02-17 2017-06-06 Hydra Systems As Method of providing mechanical stability around an entrance of a new well path to be formed from an existing well
US10301904B2 (en) 2013-09-06 2019-05-28 Hydra Systems As Method for isolation of a permeable zone in a subterranean well

Also Published As

Publication number Publication date
BR112012014203A2 (en) 2016-06-14
AU2010330957A1 (en) 2012-06-21
US20120279706A1 (en) 2012-11-08
EP2513414A1 (en) 2012-10-24
NO20093545A1 (en) 2011-06-20

Similar Documents

Publication Publication Date Title
WO2011074981A1 (en) Method and device for closing a well
US9359848B2 (en) Systems and methods for removing a section of casing
AU2018369713B2 (en) Method and apparatus for washing an annulus
CA2945402C (en) Downhole tool
CN100562643C (en) Drill and how to use it
US20180135372A1 (en) Wellbore cleanout system
US8590618B2 (en) Method and apparatus for single run cutting of well casing and forming subsurface lateral passages from a well
WO2020018755A1 (en) Method of subterranean fracturing
WO2015126258A1 (en) Hydraulic cutting tool, system and method for controlled hydraulic cutting through a pipe wall in a well, and also uses of the cutting tool and the system
US20120305251A1 (en) Method and device for closing a well in the ground
WO2015038375A1 (en) Apparatus and method for jet perforating and cutting tool
CN103403288B (en) For pipe fitting being arranged on method, system and the rock machining equipment in the hole of Drilling in rock machining
EP2823142A1 (en) A method for combined cleaning and plugging in a well and a flushing tool for flushing in a well
CN102084081A (en) Hydraulic drilling method with penetration control
RU2632836C1 (en) Method to increase formation hydrocarbon yield and intensify oil-gas-condensate production by means of formation radial penetration with hydraulic monitor at pressure drawdown
RU2703064C1 (en) Method of increasing oil recovery of formations and intensification of oil production and system for its implementation
WO2021257416A1 (en) Systems and methods to remove and re-apply sealant on the annular side of casing
AU731454B2 (en) System for cutting materials in wellbores
RU2516670C1 (en) Method of well repair at isolation of behind--casing flows
NL1001807C2 (en) Method and device for removing the top part of a construction located in the seabed.
CN212249964U (en) Controllable circulating pigging pup joint device
CN220247999U (en) Reaming is with pipe drilling tool that cores
CN111587312A (en) Liners for wellbore
WO2025250151A1 (en) Pulse generation of viscous fluids with a mud motor
GB2641477A (en) Well abandonment and severance of control lines

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10837944

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10837944

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2010837944

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2010330957

Country of ref document: AU

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2010330957

Country of ref document: AU

Date of ref document: 20101214

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 13516882

Country of ref document: US

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112012014203

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112012014203

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20120612