EP3800321A1 - Bohrlochverfahren - Google Patents

Bohrlochverfahren Download PDF

Info

Publication number
EP3800321A1
EP3800321A1 EP19201290.4A EP19201290A EP3800321A1 EP 3800321 A1 EP3800321 A1 EP 3800321A1 EP 19201290 A EP19201290 A EP 19201290A EP 3800321 A1 EP3800321 A1 EP 3800321A1
Authority
EP
European Patent Office
Prior art keywords
section
tubular metal
metal structure
downhole
annular barrier
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.)
Withdrawn
Application number
EP19201290.4A
Other languages
English (en)
French (fr)
Inventor
Christian Krüger
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.)
Welltec Oilfield Solutions AG
Original Assignee
Welltec Oilfield Solutions AG
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 Welltec Oilfield Solutions AG filed Critical Welltec Oilfield Solutions AG
Priority to EP19201290.4A priority Critical patent/EP3800321A1/de
Priority to EP20700152.0A priority patent/EP3908732A1/de
Priority to CN202080007472.3A priority patent/CN113227532A/zh
Priority to PCT/EP2020/050155 priority patent/WO2020144148A1/en
Priority to CN202080007477.6A priority patent/CN113272516A/zh
Priority to US16/735,934 priority patent/US11261690B2/en
Priority to PCT/EP2020/050154 priority patent/WO2020144147A1/en
Priority to EP20700153.8A priority patent/EP3908733A1/de
Priority to BR112021012498-5A priority patent/BR112021012498A2/pt
Priority to AU2020205421A priority patent/AU2020205421B2/en
Priority to US16/735,940 priority patent/US11299948B2/en
Priority to BR112021012493-4A priority patent/BR112021012493A2/pt
Priority to AU2020206966A priority patent/AU2020206966B2/en
Publication of EP3800321A1 publication Critical patent/EP3800321A1/de
Withdrawn legal-status Critical Current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
    • E21B33/12—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
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/127—Packers; Plugs with inflatable sleeve
    • 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
    • E21B33/128—Packers; Plugs with a member expanded radially by axial pressure

Definitions

  • the present invention relates to a downhole method for providing a zonal isolation at a predetermined position in an annulus between a wall of a borehole and a well tubular metal structure having a longitudinal extension in an existing well.
  • the zones producing too much water can be isolated e.g. by inserting a patch over a perforated zone or other types of production openings; however, the water from the isolated zone may flow parallelly on the outside of the well tubular metal structure into other producing zones and with the known solution it may be difficult to optimise such wells and these are more likely to be plugged and abandoned even though some zones may still be producing an acceptable amount of hydro-carbon containing fluid.
  • a downhole method for providing a zonal isolation at a predetermined position in an annulus between a wall of a borehole and a well tubular metal structure having a longitudinal extension in an existing well comprising
  • the downhole tool may be a wireline downhole tool.
  • the downhole tool may have a driving unit.
  • the downhole tool may comprise a machining device, the machining device having at least one arm which is pivotably connected with the downhole tool and has a cutting edge in a first end, the arm being movable between a retracted position and a projected position in relation to the downhole tool.
  • Separating the first section from the second section may comprise a machining part of the well tubular metal structure over a predetermined distance along the longitudinal extension, thereby grinding the part of the well tubular metal structure.
  • the machining part of the well tubular metal structure may be performed by milling a part of the well tubular metal structure in the longitudinal extension.
  • Separating the first section from the second section may comprise moving the first section from the second section after the machining.
  • Separating the first section from the second section may comprise pulling the first section out of the borehole after the machining.
  • the downhole method may further comprise inserting the first section in the borehole at a distance from the second section.
  • Inserting the unexpanded annular barrier may be performed by a downhole tool.
  • the unexpanded annular barrier may be inserted through the first section.
  • Inserting the unexpanded annular barrier may be performed by mounting the unexpanded annular barrier at an end of the first section. Subsequently, the first section may be inserted into the borehole, so that the unexpanded annular barrier is arranged between the first section and the second section.
  • the annular barrier may comprise a tubular metal part, an expandable metal sleeve surrounding the tubular metal part, an annular space between the tubular metal structure and the expandable metal sleeve, the tubular metal part having an expansion opening.
  • the annular barrier may comprise an expandable metal sleeve.
  • the annular barrier may comprise a tubular part and a surrounding swellable material.
  • Expanding the annular barrier may be performed by a swelling process of the swellable material of the annular barrier.
  • Expanding the annular barrier may be performed by pressurising at least a part of the well tubular metal structure.
  • the pressurising may be performed by a downhole tool isolating a part of the well tubular metal structure.
  • pressurising may be performed by pressurising the well tubular metal structure from the surface.
  • Expanding the annular barrier may be performed by expanding the tubular metal part and/or the expandable metal sleeve.
  • Expansion of the annular barrier may be performed by means of a mandrel and/or an expandable bladder.
  • Expansion of the annular barrier may be performed by pressurising the tubular metal part opposite the expansion opening and letting fluid into the annular space for expanding the expandable metal sleeve.
  • the expandable metal sleeve may be radially expanded between the first section and the second section to abut the wall of the borehole.
  • the annular barrier may have a first barrier end and a second barrier end, the first barrier end being configured to overlap the first section and the second barrier end being configured to overlap the second section.
  • the downhole method may further comprise providing a second zonal isolation at a second predetermined position in the annulus between the wall of the borehole and the well tubular metal structure.
  • the invention also relates to a downhole system for performing the downhole method as described above.
  • Fig. 1 shows a first part of a downhole method for providing a zonal isolation at a predetermined position in an annulus 2 between a wall 3 of a borehole 4 and a well tubular metal structure 5 having a longitudinal extension in an existing well 1.
  • Fig. 1 shows a partially cross-sectional view of the well tubular metal structure in which a downhole tool 10 is inserted for separating the first section 6 of the well tubular metal structure 5 from the second section 7.
  • the downhole tool 10 is inserted in the well tubular metal structure and positioned opposite the predetermined position, and the separation of the first section 6 from the second section 7 of the well tubular metal structure by machining into and along a circumference of the well tubular metal structure is initiated.
  • the separation comprises moving a machining device 8 of the downhole tool 10 upwards towards a top 51 of the well 1 and a milling or grinding part of the well tubular metal structure so that that part of the well tubular metal structure is removed leaving an open area between the first section 6 and the second section 7.
  • an unexpanded annular barrier 20 is inserted through the first section to the predetermined position between the first section and the second section as shown in Fig. 3 and as shown in Fig. 4 , then the annular barrier 20 is expanded providing zonal isolation at the predetermined position.
  • the downhole tool 10 is removed from the well as shown in Fig. 5 .
  • the downhole tool is a wireline downhole tool.
  • the downhole tool may have a driving unit (not shown).
  • the downhole tool 10 comprises an electronic section 19 for controlling the electricity supply before being directed to a rotation unit, such as an electrical motor 20, driving a hydraulic pump 21.
  • the downhole tool further comprises an anchor section 22 and a stroking tool 23 providing the movement along the longitudinal extension of the well tubular metal structure 5.
  • the downhole tool 10 is submerged into the well tubular metal structure, and the anchor section 22 of the downhole tool is hydraulically activated to anchor a second part of the tool housing of the tool in relation to the well tubular metal structure 5.
  • the motor is powered through a wireline 24 and the electronic section 19 and drives the pump and rotates a rotatable shaft 12 for rotating the cutting arm 9 for separating the upper and first section 6 from the lower second section 7 of the well tubular metal structure 5.
  • the downhole tool 10 is submerged into the well or well tubular metal structure only by a wireline, e.g. with another kind of power supply line, such as an optical fibre, and not by tubing, such as coiled tubing, drill pipe or similar piping.
  • a wireline e.g. with another kind of power supply line, such as an optical fibre
  • tubing such as coiled tubing, drill pipe or similar piping.
  • the separation of the first section from the second section comprises the machining part of the well tubular metal structure over a predetermined distance d along the longitudinal extension L, thereby grinding the part of the well tubular metal structure into inconsiderably small pieces. Machining part of the well tubular metal structure is performed by cutting or milling a part of the well tubular metal structure in the longitudinal extension.
  • Separation of the first section 6 from the second section 7 may also comprise moving the first section 6 the predetermined distance d from the second section 7 after the machining.
  • separation of the first section 6 from the second section 7 comprises pulling the first section 6 out of the borehole 4 after the machining. Then as shown in Fig. 7 , the first section 6 is mounted with an annular barrier and then inserted into the borehole 4, so that the first section is arranged at a distance from the second section where the distance corresponds to the length of the annular barrier, so that the annular barrier abuts the second section 7.
  • the unexpanded annular barrier is inserted by means of a downhole tool 100 and in Fig. 7 , the unexpanded annular barrier is inserted by means of the first section 6.
  • the annular barrier comprises in Figs. 3-5 and 7-9 a tubular metal part 52, an expandable metal sleeve 53 surrounding and connected to the tubular metal part providing an annular space 54 between the tubular metal part/well tubular metal structure and the expandable metal sleeve 53.
  • the tubular metal part has an expansion opening 55 in order to expand the expandable metal sleeve 53.
  • the annular barrier comprises an expandable metal sleeve but does not surround a tubular metal part, as the annular barrier is baseless having only the expandable metal sleeve.
  • the annular barrier can be expanded in different ways.
  • the annular barrier may be expanded by pressurising at least a part of the well tubular metal structure opposite the expansion opening and letting fluid into the annular space for expanding the expandable metal sleeve, e.g. by a tool as shown in Fig. 4 or by plugging (e.g. dropping a ball into a ball seat) the well tubular metal structure below the annular barrier and pressurising the well tubular metal structure from surface.
  • expanding the annular barrier is performed by expanding the tubular metal part and/or the expandable metal sleeve, e.g. by pulling an expandable cone or a mandrel through the tubular metal part, or if no tubular metal part is present by directly expanding the expandable metal sleeve to abut the inner face of the well tubular metal structure overlapping the first section and the second section. Subsequently, the expandable metal sleeve is further expanded by pressuring the expandable metal sleeve from within e.g. by isolating an intermediate part 58 of the expandable metal sleeve as shown in Fig. 12 .
  • each of the ends 56, 57 of the expandable metal sleeve is radially expanded by an expandable bladder 61 so that one end 56 is overlapping the first section and the other end is overlapping the second section. Subsequently, fluid is pumped out through tool openings 63 in the tool 10, expanding the expandable metal sleeve between the first section and the second section to abut the wall of the borehole.
  • the annular barrier has a first barrier end 66 and a second barrier end 67, where the first barrier end is configured to overlap the first section 6 and the second barrier end 67 is configured to overlap the second section 7.
  • sealing elements may be arranged surrounding the outer face of the annular barrier ends as shown in Figs. 10-13 .
  • the expandable metal sleeve 53 comprises sealing elements 64 and split ring-shaped elements 65 for back-up of the sealing element 64.
  • An intermediate element 69 is provided between the sealing element 64 and the split ring-shaped elements 65.
  • the sealing elements, the split ring-shaped elements 65 and the intermediate elements are arranged between two projections 71 forming a groove 72.
  • the downhole system 100 is shown comprising the well tubular metal structure, the annular barrier, and the downhole tool 10.
  • the downhole method may further comprise providing a second zonal isolation at a second predetermined position in the annulus between the wall of the borehole and the well tubular metal structure.
  • the first and second annular barrier provided at the first and second predetermined position may be expanded in one run or two runs.
  • the downhole tool may have means for holding a section of the well tubular metal structure in relation to a second section of the well tubular metal structure by having two anchoring sections 22.
  • the downhole tool 10 providing the separation of the first section from the second section may be the same tool providing and expanding the annular barrier so that the operation may be performed in one run instead of the two runs shown in Figs. 1-4 .
  • the downhole tool 10 comprises a tool housing 6a having a first 7a and a second 8a housing part and a cutting arm 9 being pivotably connected with the first housing part and having a cutting edge 10 in a first end.
  • the arm 9 is movable between a retracted position and a projected position in relation to the tool housing.
  • the arm is shown in its projected position in Fig. 15 .
  • the tool further comprises an arm activation assembly 11 for moving the cutting arm 9 between the retracted position and the projected position.
  • a rotatable shaft 12 penetrates the second housing part 8a and is connected with, and forms part of, the first housing part for rotating the cutting arm.
  • the arm activation assembly 11 comprises a piston housing 13 arranged in the first housing part 7a and comprises a piston chamber 14.
  • a piston member 15 is arranged inside the piston chamber and engages with the cutting arm 9, thereby moving the cutting arm 9 between the retracted position and the projected position.
  • the piston member 15 is movable in a longitudinal direction of the downhole tubing cutter tool and has a first piston face 16 and a second piston face 17. Hydraulic fluid from the pump is pumped into a first chamber section 25 of the chamber 14 through a first fluid channel 18, applying a hydraulic pressure on the first piston face 16, moving the piston in a first direction, applying a projecting force on the cutting arm 9.
  • the cutting edge 10B is capable of cutting through the well tubular metal structure.
  • a first section of the well tubular metal structure can be separated from a second section of the well tubular metal.
  • the rotatable shaft 12 supplies the fluid to the first section 25 of the chamber 14.
  • the fluid from the pump is supplied to the shaft 12 through a circumferential groove 27 fluidly connected with a second fluid channel 28 in the second housing part 8a.
  • the fluid from the second fluid channel 28 is distributed in the circumferential groove 27 so that the first fluid channel 18 in the rotatable shaft 12 is always supplied with pressurised fluid from the pump while rotating.
  • the circumferential groove 27 is sealed off by means of circumferential seals 29, such as O-rings, on both sides of the circumferential groove 27.
  • the piston member moves 15 in the longitudinal direction of the tool 10 inside the piston chamber and divides the chamber 14 into a first chamber section 25 and a second chamber section 26.
  • a spring member 40 abutting the second piston face 17 opposite the first piston face 16 is compressed.
  • the spring member which is a helical spring surrounding part of the piston member arranged in the second chamber section 26, is thus compressed between the second piston face 17 and the piston chamber 14.
  • the piston member has a first end 30 extending out of the piston housing 13 and engaging the cutting arm by having a circumferential groove 31 into which a second end 32 of the cutting arm extends.
  • the second end of the cutting arm is rounded to be able to rotate in the groove.
  • the cutting arm is pivotably connected with the first housing around a pivot point 33.
  • the piston member extends into the shaft 12.
  • a space 45 is created between the second end 34 of the piston member and the shaft.
  • This space 45 is in fluid communication with the well fluid through a third channel 35, which is illustrated by a dotted line. In this way, the piston does not have to overcome the pressure surrounding the tool in the well.
  • the second end 34 of the piston member is provided with two circumferential seals 36 in order to seal off the piston chamber from the dirty well fluid.
  • the downhole method may further comprises providing cement on top of the annular barrier to provide an abandonment plug.
  • a stroking tool 23 is a tool providing an axial force.
  • the stroking tool comprises an electrical motor for driving a pump.
  • the pump pumps fluid into a piston housing to move a piston acting therein.
  • the piston is arranged on the stroker shaft.
  • the pump may pump fluid into the piston housing on one side and simultaneously suck fluid out on the other side of the piston.
  • fluid or well fluid any kind of fluid that may be present in oil or gas wells downhole, such as natural gas, oil, oil mud, crude oil, water, etc.
  • gas is meant any kind of gas composition present in a well, completion, or open hole
  • oil is meant any kind of oil composition, such as crude oil, an oil-containing fluid, etc.
  • Gas, oil, and water fluids may thus all comprise other elements or substances than gas, oil, and/or water, respectively.
  • a casing or well tubular metal structure is meant any kind of pipe, tubing, tubular, liner, string etc. used downhole in relation to oil or natural gas production.
  • a driving unit such as a downhole tractor can be used to push the tool all the way into position in the well.
  • the downhole tractor may have projectable arms having wheels, wherein the wheels contact the inner surface of the casing for propelling the tractor and the tool forward in the casing.
  • a downhole tractor is any kind of driving tool capable of pushing or pulling tools in a well downhole, such as a Well Tractor®.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
EP19201290.4A 2019-01-08 2019-10-03 Bohrlochverfahren Withdrawn EP3800321A1 (de)

Priority Applications (13)

Application Number Priority Date Filing Date Title
EP19201290.4A EP3800321A1 (de) 2019-10-03 2019-10-03 Bohrlochverfahren
EP20700152.0A EP3908732A1 (de) 2019-01-08 2020-01-07 Bohrlochverfahren
CN202080007472.3A CN113227532A (zh) 2019-01-08 2020-01-07 井下方法
PCT/EP2020/050155 WO2020144148A1 (en) 2019-01-08 2020-01-07 Downhole method
CN202080007477.6A CN113272516A (zh) 2019-01-08 2020-01-07 井下方法
US16/735,934 US11261690B2 (en) 2019-01-08 2020-01-07 Downhole method and system for providing zonal isolation with annular barrier expanded from within and through well tubular metal structure
PCT/EP2020/050154 WO2020144147A1 (en) 2019-01-08 2020-01-07 Downhole method
EP20700153.8A EP3908733A1 (de) 2019-01-08 2020-01-07 Bohrlochverfahren
BR112021012498-5A BR112021012498A2 (pt) 2019-01-08 2020-01-07 Método de fundo de poço
AU2020205421A AU2020205421B2 (en) 2019-01-08 2020-01-07 Downhole method
US16/735,940 US11299948B2 (en) 2019-01-08 2020-01-07 Downhole method for removal of tubular metal structure
BR112021012493-4A BR112021012493A2 (pt) 2019-01-08 2020-01-07 Método de fundo de poço
AU2020206966A AU2020206966B2 (en) 2019-01-08 2020-01-07 Downhole method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19201290.4A EP3800321A1 (de) 2019-10-03 2019-10-03 Bohrlochverfahren

Publications (1)

Publication Number Publication Date
EP3800321A1 true EP3800321A1 (de) 2021-04-07

Family

ID=68137903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19201290.4A Withdrawn EP3800321A1 (de) 2019-01-08 2019-10-03 Bohrlochverfahren

Country Status (1)

Country Link
EP (1) EP3800321A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083593A2 (en) * 2003-03-14 2004-09-30 Enventure Global Technology Radial expansion and milling of expandable tubulars
US20180106124A1 (en) * 2015-04-29 2018-04-19 Welltec A/S Downhole tubular assembly of a well tubular structure
WO2019151870A1 (en) * 2018-01-30 2019-08-08 Hydra Systems As A method, system and plug for providing a cross-sectional seal in a subterranean well

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083593A2 (en) * 2003-03-14 2004-09-30 Enventure Global Technology Radial expansion and milling of expandable tubulars
US20180106124A1 (en) * 2015-04-29 2018-04-19 Welltec A/S Downhole tubular assembly of a well tubular structure
WO2019151870A1 (en) * 2018-01-30 2019-08-08 Hydra Systems As A method, system and plug for providing a cross-sectional seal in a subterranean well

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