EP3721047B1 - A device for forming a barrier in an annulus of a well - Google Patents

A device for forming a barrier in an annulus of a well Download PDF

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Publication number
EP3721047B1
EP3721047B1 EP18885475.6A EP18885475A EP3721047B1 EP 3721047 B1 EP3721047 B1 EP 3721047B1 EP 18885475 A EP18885475 A EP 18885475A EP 3721047 B1 EP3721047 B1 EP 3721047B1
Authority
EP
European Patent Office
Prior art keywords
annulus
liquid
opening
pressure
introducing
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.)
Active
Application number
EP18885475.6A
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German (de)
English (en)
French (fr)
Other versions
EP3721047A1 (en
EP3721047A4 (en
Inventor
Bengt Gunnarson
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.)
Cannseal As
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Cannseal As
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Publication date
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Publication of EP3721047A1 publication Critical patent/EP3721047A1/en
Publication of EP3721047A4 publication Critical patent/EP3721047A4/en
Application granted granted Critical
Publication of EP3721047B1 publication Critical patent/EP3721047B1/en
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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
    • E21B33/138—Plastering the borehole wall; Injecting into the formation
    • 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
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/04—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
    • E21B23/0419—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion using down-hole motor and pump arrangements for generating hydraulic pressure
    • 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
    • E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
    • E21B27/02—Dump bailers, i.e. containers for depositing substances, e.g. cement or acids
    • 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
    • E21B33/12—Packers; Plugs
    • 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

Definitions

  • the present invention relates to a method for forming a barrier in an annulus of a well.
  • the annulus isolation are formed by either cement, another sealing material or by a mechanical packer being part of the initial well completion.
  • a challenge with a cemented annulus is that it can leak water or hydrocarbons in between the zones, or to the surface via the cemented annulus.
  • Prior art devices for repairing a leaking cemented barrier is called a cement squeeze and comprising a method where cement is squeezed into the annulus to repair the failed barrier. To repair a leaking packer is by traditional means not possible.
  • WO2010/147476A1 discloses a well tool and a method for forming a barrier in a well using a resin.
  • a further prior art method is known from WO2014/060293A2 .
  • an object is to provide a device that enables a barrier to be formed in an annulus of a well subjected to a differential pressure with improved reliability.
  • the device further comprises a device for forming said opening in the annulus.
  • the device for forming said opening comprises for example a perforation unit or a drill unit.
  • control unit adapted to control the pump unit so that said liquid is provided into the opening in the annulus with two or more injection sequences with increasing pressure.
  • said liquid has a viscosity between 1*10 ⁇ 6 - 10*10 ⁇ 6 cP at the close down phase of introducing the liquid to the opening, preferably between 2*10 ⁇ 6 - 5*10 ⁇ 6 cP.
  • the method comprises:
  • the initial pressure is between 1 - 50 bar, preferably between 10 - 30 bar.
  • the method comprises providing said liquid into the opening in the annulus with two or more injection sequences with increasing pressure.
  • FIG. 1 is a schematic view of device 1 for forming a barrier in an annulus 5 of a well according to an embodiment of the invention disclosed.
  • Fig. 1 also discloses an arrangement 10 comprising the device 1 configured with a polymeric hardening liquid.
  • FIG. 2 is a schematic view of a well 11 comprising the annulus 5 to be provided with a barrier by means of the device 1 in fig. 1 .
  • the well 11 comprises a well head 12 and a first casing 14 and second casing 16 concentric between which an annulus 5 is formed that has been filled with a solid, such a solid comprising a cement material or other suitable material.
  • the device 1 is adapted to be introduced into the well 11.
  • the device 1 comprises an injection tool 20, a device 22 for forming the opening into the annulus 5, a reservoir 24 for containing the polymeric hardening liquid and a pump unit 26.
  • the device 22 for forming the opening in the annulus 5 comprises for example a drill unit comprising a drive unit and a drill bit for drilling through the first casing 14 and into the annulus 5.
  • the device 22 for forming the opening in the annulus 5 comprises alternatively a perforation unit.
  • the pump unit 26 is configured to provide pressure to the liquid so that the liquid is introduced into the opening in the annulus 5 with a controllable pressure.
  • the pump unit 26 comprises for example a hydraulic induced pump or an electric induced pump.
  • the device 1 further comprises a control unit 30 adapted to control the pump unit 26 and accordingly the pressure in which the liquid is introduced into the opening in the annulus 5.
  • the control unit 30 adapted to control the pump unit 26 so that said liquid is provided into the opening with an initial pressure at a start up phase of introducing the liquid into the opening and a final pressure at a close-down phase of introducing the liquid into the opening.
  • the final pressure is higher than the initial pressure.
  • the control unit 30 is adapted to control the pump unit 26 so that the liquid is introduced at a low pressure when the liquid has a low viscosity at the start-up phase of forming the barrier and at a high pressure when the liquid has a high viscosity at the close-down phase when forming the barrier.
  • the "low” and "high” in the previous sentence is to be regarded as relative terms for the purpose of explaining the invention. Details on parameters for forming will be explained in connection with the explanation of the method.
  • the control unit 30 comprises a logic unit, such as a CPU, adapted to execute a computer program, and signalling means connected to the pump unit 26 for controlling the pressure of introducing the liquid into the opening in the annulus 5. It shall be understood that the control unit 30 comprises the necessary features for controlling the pressure of introducing the liquid into the opening in the annulus 5 during a period of time of forming the barrier.
  • the polymeric hardening liquid comprise mainly a thermoset material.
  • the liquid has preferably the characteristic in form a viscosity between 5 - 2000 cP at the start up phase of introducing the liquid to the opening, preferably a viscosity of between 15 - 1*10 ⁇ 6 cP.
  • the liquid has preferably the characteristic in form a viscosity between 1*10 ⁇ 6 - 10*10 ⁇ 6 cP at the close down phase of introducing the liquid to the opening, preferably between 2*10 ⁇ 6 - 5*10 ⁇ 6 cP.
  • control unit 30 of above discussed device 1 is configured to control the device 1 accordingly.
  • FIG. 3 is a flow chart of a method for forming a barrier in an annulus 5 of a well 11 according to the disclosure
  • the method comprises, in a step 110, positioning an injection tool 20 at a position of an opening in in the annulus 5 for introducing the polymeric hardening liquid.
  • the method comprises, at a start-up phase, introducing the liquid into the opening at an initial pressure.
  • the method comprises, at a close-down phase, introducing the liquid into the opening at a final pressure, wherein the final pressure is higher than the initial pressure.
  • the method comprises introducing the liquid into the opening at the initial pressure between 1 - 50 bar, preferably between 10 - 30 bar.
  • the method comprises introducing the liquid into the opening at the final pressure is between 2 - 400 bar, preferably between 30 - 250 bar.
  • the duration between the start up phase and the close-down phase of introducing the liquid to the opening is between one hour and 72 hours, preferably between 12 and 48 hours.
  • In fig. 4 is a flow chart of a method for forming a barrier in an annulus 5 of a well 11 according to a further embodiment is disclosed.
  • the method in fig. 4 differs from the method in fig. 3 in that the method further comprises, in a step 125, gradually increasing the pressure of the liquid over time from the start up phase to the close-down phase of introducing the liquid into the opening.
  • In fig. 5 is a flow chart of a method for forming a barrier in an annulus 5 of a well 11 according to yet another embodiment is disclosed.
  • the method in fig. 5 differs from the method in fig. 3 in that the method further comprises, in a step 127, providing said liquid into the opening in the annulus 5 with two or more injection sequences with increasing pressure.
  • the method in fig. 3-5 may also involve the step of forming the opening into the annulus 5 if the opening into the annulus 5 has not yet been established.

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  • 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)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Massaging Devices (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
EP18885475.6A 2017-12-07 2018-11-29 A device for forming a barrier in an annulus of a well Active EP3721047B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20171955A NO344114B1 (en) 2017-12-07 2017-12-07 A device for forming a barrier in an annulus of a well
PCT/NO2018/050297 WO2019112438A1 (en) 2017-12-07 2018-11-29 A device for forming a barrier in an annulus of a well

Publications (3)

Publication Number Publication Date
EP3721047A1 EP3721047A1 (en) 2020-10-14
EP3721047A4 EP3721047A4 (en) 2021-07-07
EP3721047B1 true EP3721047B1 (en) 2023-12-27

Family

ID=66751781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18885475.6A Active EP3721047B1 (en) 2017-12-07 2018-11-29 A device for forming a barrier in an annulus of a well

Country Status (5)

Country Link
US (1) US20210172283A1 (da)
EP (1) EP3721047B1 (da)
DK (1) DK3721047T3 (da)
NO (1) NO344114B1 (da)
WO (1) WO2019112438A1 (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO347203B1 (en) 2020-10-20 2023-07-03 Interwell Norway As Thermite deployment tool
NO347012B1 (en) 2020-10-20 2023-04-03 Interwell Norway As Thermite deployment tool
NO347929B1 (en) 2021-03-19 2024-05-13 Interwell P&A As Sedimented thermite in well

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO325306B1 (no) * 2005-03-14 2008-03-25 Triangle Tech As Fremgangsmåte og anordning for in situ dannelse av en tetning i et ringrom i en brønn
US7523785B2 (en) * 2006-03-09 2009-04-28 Maersk Olie Og Gas A/S System for injecting a substance into an annular space
US7757769B2 (en) * 2007-10-04 2010-07-20 Baker Hughes Incorporated Wellbore and reservoir treatment device and method
NO329699B1 (no) * 2009-06-16 2010-12-06 Agr Cannseal As Brønnverktøy og fremgangsmåte for in situ innføring av et behandlingsfluid i et ringrom i en brønn
DK2574720T3 (da) * 2011-09-30 2015-06-01 Welltec As Brøndinjektionsværktøj
WO2014060293A2 (en) * 2012-10-16 2014-04-24 Maersk Olie Og Gas A/S Sealing apparatus and method
US9546313B2 (en) * 2013-12-13 2017-01-17 Brian Henry Tomlinson Compositions and methods for controlling wellsite fluid and gas flow
US11015417B2 (en) * 2014-04-07 2021-05-25 Halliburton Energy Services, Inc. Using cement slurries in hydrajetting tools
CN106285554B (zh) * 2016-09-07 2018-09-14 中国石油大学(华东) 用于固井阶段的井筒压力控制系统及方法

Also Published As

Publication number Publication date
NO20171955A1 (en) 2019-06-10
NO344114B1 (en) 2019-09-09
US20210172283A1 (en) 2021-06-10
EP3721047A1 (en) 2020-10-14
EP3721047A4 (en) 2021-07-07
DK3721047T3 (da) 2024-03-18
WO2019112438A1 (en) 2019-06-13

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