GB2611955A - A method for cutting off a tubular in a subterranean well removing the cut-off section of the tubular from the well - Google Patents

A method for cutting off a tubular in a subterranean well removing the cut-off section of the tubular from the well Download PDF

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Publication number
GB2611955A
GB2611955A GB2301154.7A GB202301154A GB2611955A GB 2611955 A GB2611955 A GB 2611955A GB 202301154 A GB202301154 A GB 202301154A GB 2611955 A GB2611955 A GB 2611955A
Authority
GB
United Kingdom
Prior art keywords
tool
tubular
spear
valve
cut
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.)
Granted
Application number
GB2301154.7A
Other versions
GB202301154D0 (en
GB2611955B (en
Inventor
Tore Torvestad Bjorn
Bergesen Thomas
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.)
Archer Oiltools AS
Original Assignee
Archer Oiltools 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 Archer Oiltools AS filed Critical Archer Oiltools AS
Priority to GB2400257.8A priority Critical patent/GB2623662A/en
Publication of GB202301154D0 publication Critical patent/GB202301154D0/en
Publication of GB2611955A publication Critical patent/GB2611955A/en
Application granted granted Critical
Publication of GB2611955B publication Critical patent/GB2611955B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools 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
    • 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
    • E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
    • 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
    • E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
    • E21B29/005—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window
    • 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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • 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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • E21B31/16—Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
    • 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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Knives (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

A method for cutting off a tubular in a subterranean well and removing a cut-off section of said tubular from the subterranean well, wherein the method comprises: - providing a downhole tool assembly (10) on a work string (20) wherein a through-bore (19) extends through said work string (20) and said tool assembly (10), the tool assembly (10) comprising, from top to bottom: - a pull tool (14), - an anchor tool (11) for anchoring the pull tool (14) to a first tubular (1), - a space-out drill pipe string (21), - a spear tool (12) for anchoring the pull tool (14) to a second tubular (2), at least partially surrounded by the first tubular (1), - a packer tool (15), - a valve tool (16) for controlling fluid communication in the through-bore (19), wherein a first fluid conduit (161) extends between the valve tool (16) and the packer tool (15), - a cutter tool (13) for cutting said second tubular (2), - running the tool string into the desired portion of the second casing, cutting, pulling and releasing the anchor tool (11) - pulling the entire tool assembly (10) with the cut-off section of the second tubular (2) out of the well.

Claims (19)

PATENT CLAIMS
1. A method for cutting off a tubular in a subterranean well and removing a cut-off section of said tubular from the subterranean well, wherein the method comprises: a) providing a downhole tool assembly (10) on a work string (20) wherein a through-bore (19) extends through said work string (20) and said tool assembly (10), the tool assembly (10) comprising, from top to bottom: - a pull tool (14), - an anchor tool (11) for anchoring the pull tool (14) to a first tubular (1), - a space-out drill pipe string (21), - a spear tool (12) for anchoring the pull tool (14) to a second tubular (2), at least partially surrounded by the first tubular (1), - a packer tool (15), - a valve tool (16) for controlling fluid communication in the through-bore (19), wherein a first fluid conduit (161) extends between the valve tool (16) and the packer tool (15), - a cutter tool (13) for cutting said second tubular (2), b) lowering the tool assembly (10) into the well until said anchor tool is enclosed by the first tubular (1) and near a top of said second tubular (2), and said cutter tool is at a target cutting depth and the spear tool (12) is enclosed by the second tubular (2), c) instructing the valve tool (16) to close so as to prevent fluid communication through said through-bore (19) such that a set of slips (121) in the spear tool (12) is pressure-actuated and brought in contact with the second tubular (2), d) actuating the spear tool (12) for gripping engagement of the spear tool (12) with the second tubular (2), e) instructing the valve tool (16) to fully open so as to enable fluid communication through said through-bore (19) such that the fluid is allowed to actuate the cutter tool (13) so that knives (131) of the cutter tool (13) are deployed by means of fluid pressure and/or fluid flow, f) rotating the cutter tool (13) so as to cut-off a section of the second tubular (2) by means of the deployed knives (131) of the cutter tool (13), g) reducing the fluid pressure and/or fluid flow so as to retract the deployed knives (131) of the cutter tool (13), h) instructing the valve tool (16) to open the first fluid conduit (161) for enabling setting of the packer tool (15) in the second tubular (2), above the cut, to set the packer tool (15), i) pressure-testing for presence of fluid communication, via said cut and said annulus, in the annulus external to the second tubular, j) unsetting the packer tool (15), k) releasing the spear tool (12) from said second tubular (2), L) pulling up the tool assembly (10) until the spear tool (12) is near a top portion of the cut-off section of the second tubular (2), m) instructing the valve tool (16) to close so as to prevent fluid communication through said through-bore (19) such that a set of slips (121) in the spear tool (12) is pressure-actuated and brought in contact with the second tubular (2) for engagement of the spear tool (12) with the top portion of the cut-off section of the second tubular (2) and actuating the spear tool (12) to hold said top portion of the cut-off section, n) pressure-actuating a set of anchor slips (111) of the anchor tool (11) for gripping engagement with the first tubular (1), o) pressure-actuating the pull tool (14) to pull upwards said space-out drill pipe string (21) with said spear tool (12) and the thereto engaged cut-off section of the second tubular (2) thus releasing said cut-off section of the second tubular (2) from its stuck state in the well, p) releasing said anchor tool (11) from the first tubular (1), and q) pulling the entire tool assembly (10) with the cut-off section of the second tubular (2) out of the well.
2. Method according to claim 1, wherein the method further comprises: - providing a no-go unit (111) in order to prevent downwards movement of the anchor (11) beyond said top of the second tubular (2).
3. Method according to any of the preceding claims, wherein the process of instructing said valve tool (16) comprises sending a control signal (S) from the surface to a receiver (R) of an electronic control unit (162) in said valve tool (16), said electronic control unit (162), on the basis of said control signal (S), prepare pressure-actuated operation of a valve element (164) of said valve toll (16) to open/close said through-bore (19).
4. Method according to 3, wherein the control signal (S) is transmitted to the receiver (R) of the electronic control unit (162) along a wired pipe - work string (20).
5. Method according to claim 3, wherein the control signal (S) is a pressure pulse signal transmitted to the receiver (R) of the electronic control unit (162) via the fluid of the through-bore (19) of the work string (20).
6. Method according to claim 3, wherein the control signal (S) comprises RFID-tags placed in the fluid of the through-bore of the work string (20), whereupon said RFID-tags are, via the fluid of the through-bore, transmitted to an RFID-reader associated with the receiver (R) of the electronic control unit (162).
7. Method according to claim 3, wherein the control signal (S) is in the form of tool rotation parameters, including rotational speed and/or duration of rotation, wherein said receiver (R) of the electronic control unit (162) comprises a a rotation sensor (RS) for tool rotation parameters.
8. Method according to any of the preceding claims, wherein at least one of the spear tool (12), and the cutter tool (13) is mechanically actuated, said spear tool (12) actuated by upward pull via said space-out drill pipe string (21), said cutter tool (13) actuated by rotation of said work string (20).
9. Method according to any of the preceding claims, wherein at least one of said pull tool (14), said anchor tool (11), said spear tool (12), said packer tool (15), said valve tool (16), wherein - said pull tool (14) is actuated by pressure through said work string (20) with said valve tool (16) closed; - said anchor tool (11) is actuated by pressure in said work string (20) and pull via said pull tool (14) while said space-out drill pipe string (21) with said spear tool (12) is set; - said spear tool (12) is set via pull in said work string (20) and reinforced via pull via said space-out drill pipe string (21) from said pull tool (14); - said cutter tool (13) is hydraulically actuated by pressure and/or flow rate when said valve tool (16) is open.
10. Method according to any of the preceding claims, wherein if pressure-testing detects presence of fluid communication between the through-bore (19) and the annulus, via the cut, increasing the fluid pressure and the flow rate in the work string (20) in order to at least partially wash out sediments from said annulus.
11. Method according to any of the preceding claims, wherein a second fluid conduit (162) extends between the packer tool (15) and the spear tool (12) so as to enable fluid communication between said valve tool (16) and said spear tool (12), via said packer tool (15), wherein, prior to setting of the packer tool (15) in the second tubular (2), a set of slips (121) in the spear tool (12) is actuated and brought in contact with the second tubular (2) by means of fluid flowing through the first and second fluid conduits (161 , 162) from said valve tool (16) to said spear tool (12), via said packer tool (15).
12. A downhole tool assembly (10) for cutting off a tubular in a subterranean well and removing the cut-off section of said tubular from the subterranean well, said assembly (10) for being conveyed on a work string (20), wherein a through-bore (19) extends through said work string (20) and said tool assembly (10), the tool assembly (10) comprising, from top to bottom: - a pull tool (14), - an anchor tool (11) for anchoring the downhole pull tool (14) to a first tubular (1), said anchor tool comprising a set of pressure-actuated anchor slips (111) for engaging with the first tubular (1), - a space-out drill pipe string (21), - a spear tool (12) for anchoring the downhole pull tool (14) to a second tubular (2), said spear tool comprising a set of pressure-actuated slips (121) for engaging with the second tubular (2), - a pressure-actuated packer tool (15), - a valve tool (16) for controlling fluid communication in the through-bore, wherein a first fluid conduit (161) extends between the valve tool (16) and the packer tool (15), - a pressure-actuated, rotatable cutter tool (13) for cutting said second tubular (2), said cutter tool (13) comprising retractable knives (131), said tool assembly (10) being suitable for releasing the cut-off section of the second tubular (2) and pulling the entire tool assembly (10) with the cut-off section of the second tubular (2) out of the well.
13. Downhole tool assembly (10) according to claim 12, wherein the tool assembly (10) comprises a no-go unit (111) arranged immediately below said anchor tool (12).
14. Downhole tool assembly (10) according to any of the claims 12-13, wherein the space-out drill pipe string (21) has a length that is commensurate to a length between the top of the second tubular (2) and the target cut.
15. Downhole tool assembly (10) according to claim 14, wherein the length between the top of the second tubular (2) and the target cut in the range between 30 m and 600 m.
16. Downhole tool assembly (10) according to claim 12, wherein the packer tool (15) and the valve tool (16) are combined into one valve and packer tool unit (15, 16).
17. Downhole tool assembly (10) according to any of the claims 12-16, wherein the valve tool (16) is in an open state when the knives (131) of the cutting tool (13) are deployed.
18. Downhole tool assembly (10) according to any of the claims 12-16, wherein the valve tool (16) is in a closed state when the pull tool (14) is pulling the cut-off section of the second tubular (2).
19. Downhole tool assembly (10) according to any of the claims 12-18, wherein a second fluid conduit (162) extends between the packer tool (15) and the spear tool (12) so as to enable fluid communication between said packer tool (15) and said spear tool (12).
GB2301154.7A 2020-06-26 2021-06-25 A method for cutting off a tubular in a subterranean well removing the cut-off section of the tubular from the well Active GB2611955B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2400257.8A GB2623662A (en) 2020-06-26 2021-06-25 A method for cutting off a tubular in a subterranean well and removing the cut-off section of the tubular from the well

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20200757A NO346136B1 (en) 2020-06-26 2020-06-26 A method for cutting off a tubular in a subterranean well and removing the cut-off section of the tubular from the well, and a toolstring thereof.
PCT/NO2021/050156 WO2021262011A1 (en) 2020-06-26 2021-06-25 A method for cutting off a tubular in a subterranean well and removing the cut-off section of the tubular from the well

Publications (3)

Publication Number Publication Date
GB202301154D0 GB202301154D0 (en) 2023-03-15
GB2611955A true GB2611955A (en) 2023-04-19
GB2611955B GB2611955B (en) 2024-02-21

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GB2301154.7A Active GB2611955B (en) 2020-06-26 2021-06-25 A method for cutting off a tubular in a subterranean well removing the cut-off section of the tubular from the well
GB2400257.8A Pending GB2623662A (en) 2020-06-26 2021-06-25 A method for cutting off a tubular in a subterranean well and removing the cut-off section of the tubular from the well

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GB2400257.8A Pending GB2623662A (en) 2020-06-26 2021-06-25 A method for cutting off a tubular in a subterranean well and removing the cut-off section of the tubular from the well

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GB (2) GB2611955B (en)
NO (1) NO346136B1 (en)
WO (1) WO2021262011A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011031164A1 (en) * 2009-09-10 2011-03-17 Bruce Allan Flanders Well tool and method for severing and withdrawing a pipe section from a pipe string in a well
WO2018083473A1 (en) * 2016-11-04 2018-05-11 Ardyne Technologies Limited Method of removing a downhole casing
US20190162033A1 (en) * 2017-11-29 2019-05-30 Baker Hughes, A Ge Company, Llc Bottom Hole Assembly for Cutting and Pulling a Tubular
GB2574647A (en) * 2018-06-14 2019-12-18 Ardyne Holdings Ltd Improvements In Or Relating To Well Abandonment And Slot Recovery
GB2576010A (en) * 2018-08-01 2020-02-05 Ardyne Holdings Ltd Improvements in or relating to well abandonment and slot recovery

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3152386B1 (en) * 2014-08-19 2019-04-03 Halliburton Energy Services, Inc. Behind pipe evaluation of cut and pull tension prediction in well abandonment and intervention operations
WO2020006333A1 (en) * 2018-06-28 2020-01-02 Schlumberger Technology Corporation Methods and apparatus for removing sections of a wellbore wall
NO346596B1 (en) * 2019-02-07 2022-10-24 Ardyne Holdings Ltd Resettable mechanism and a method of controlled actuation of a hydraulically operated downhole tool
WO2020165369A1 (en) * 2019-02-14 2020-08-20 Ardyne Holdings Limited Improvements in or relating to well abandonment and slot recovery
GB2584281B (en) * 2019-05-24 2021-10-27 Ardyne Holdings Ltd Improvements in or relating to well abandonment and slot recovery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011031164A1 (en) * 2009-09-10 2011-03-17 Bruce Allan Flanders Well tool and method for severing and withdrawing a pipe section from a pipe string in a well
WO2018083473A1 (en) * 2016-11-04 2018-05-11 Ardyne Technologies Limited Method of removing a downhole casing
US20190162033A1 (en) * 2017-11-29 2019-05-30 Baker Hughes, A Ge Company, Llc Bottom Hole Assembly for Cutting and Pulling a Tubular
GB2574647A (en) * 2018-06-14 2019-12-18 Ardyne Holdings Ltd Improvements In Or Relating To Well Abandonment And Slot Recovery
GB2576010A (en) * 2018-08-01 2020-02-05 Ardyne Holdings Ltd Improvements in or relating to well abandonment and slot recovery

Also Published As

Publication number Publication date
WO2021262011A1 (en) 2021-12-30
GB202400257D0 (en) 2024-02-21
GB202301154D0 (en) 2023-03-15
GB2611955B (en) 2024-02-21
NO346136B1 (en) 2022-03-14
NO20200757A1 (en) 2021-12-27
GB2623662A (en) 2024-04-24

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