WO2024073841A1 - Dispositif de capture d'ancre des tiges de production actionné par un mouvement axial de mandrin - Google Patents

Dispositif de capture d'ancre des tiges de production actionné par un mouvement axial de mandrin Download PDF

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Publication number
WO2024073841A1
WO2024073841A1 PCT/CA2023/051303 CA2023051303W WO2024073841A1 WO 2024073841 A1 WO2024073841 A1 WO 2024073841A1 CA 2023051303 W CA2023051303 W CA 2023051303W WO 2024073841 A1 WO2024073841 A1 WO 2024073841A1
Authority
WO
WIPO (PCT)
Prior art keywords
mandrel
tubing
tubing anchor
axially extending
anchor catcher
Prior art date
Application number
PCT/CA2023/051303
Other languages
English (en)
Inventor
Vern Hult
Emery Stoesser
Original Assignee
Evolution Oil Tools Inc.
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 Evolution Oil Tools Inc. filed Critical Evolution Oil Tools Inc.
Publication of WO2024073841A1 publication Critical patent/WO2024073841A1/fr

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
    • 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
    • E21B40/00—Tubing catchers, automatically arresting the fall of oil-well tubing

Definitions

  • the present invention relates to a wellbore tool and in particular to a tubing anchor catcher.
  • tubing anchor catchers For anchoring the tubing string and catching a string in the event that the tubing string is severed above the tubing anchor catcher.
  • a tubing anchor catcher comprising: a mandrel for connection to a tubing string, the mandrel having upper and lower ends each configured for connection into a tubing string, an enlargement on the upper end, an enlargement on the lower end and therebetween a smaller diameter necked region on the outer surface of the mandrel; a slip cage assembly carried on the mandrel necked region; and a J-slot mechanism between the mandrel and the slip cage assembly, the J-slot mechanism including a J- slot including a pathway of slots and a control pin over which the pathway of slots ride and wherein the J-slot mechanism is selectable between at least a run in position, a tubing anchoring position, a tubing catching position and a run out position relative by axial movement upwardly or downwardly of the mandrel through the slip cage.
  • Figure 1 is a side, isometric view of a tubing anchor catcher.
  • Figure 2a (i) is a side elevation view of the tubing anchor catcher of Figure 1 in a run in position (Pos 1) in a wellbore;
  • Figure 2a (ii) is a side elevation view of the tubing anchor catcher of Figure 2a (i) in a tension anchoring position (Pos 2) in a wellbore;
  • Figure 2a (iii) is a side elevation view of the mandrel of the tubing anchor catcher of Figures 2a (i) and 2a (ii) showing the direction of mandrel movement required to move the tubing anchor catcher from Pos 1 to Pos 2 and the path through which the control pin of the outer slip cage moves through the control slots on the mandrel;
  • Figure 2b (i) is a side elevation view of the tubing anchor catcher of Figure 1 in a wellbore, the tubing anchor catcher is in an anchoring, tensioning position (Pos 2), which is the same as Figure 2a (ii);
  • Figure 2b (ii) is a side elevation view of the tubing anchor catcher of Figure 2b (i) in an anchor catching position (Pos 3) in a wellbore;
  • Figure 2b (iii) is a side elevation view of the mandrel of the tubing anchor catcher of Figures 2b (i) and 2b (ii) showing the direction of mandrel movement and the path for moving the tubing anchor catcher from Pos 2 to Pos 3;
  • Figure 2c (i) is a side elevation view of the tubing anchor catcher of Figure 1 in a transitional position near to Pos 3, but where the upper slips are not yet expanded;
  • Figure 2c (ii) is a side elevation view of the tubing anchor catcher of Figure 2c (i) in a run out position (Pos 4) in a wellbore;
  • Figure 2c (iii) is a side elevation view of the mandrel of the tubing anchor catcher of Figures 2c (i) and 2c (ii) showing the direction of mandrel movement for moving the tubing anchor catcher from Pos 3 to Pos 4 and the path through which the control pin moves through the control slots during this movement;
  • Figure 3 is a side elevation of the tubing anchor catcher of Figure 1 in a run in position (Pos 1);
  • Figure 4 is a side, isometric view of another tubing anchor catcher
  • Figure 5a is a side elevation view of the tubing anchor catcher of Figure 4 in a run in position (Pos 1A);
  • Figure 5a (ii) is a side elevation view of the tubing anchor catcher of Figure 5a (i) in a tension anchor/rotation position (Pos 2A) in a wellbore;
  • Figure 5a (iii) is a side elevation view of the mandrel of the tubing anchor catcher of Figures 5a (i) and 5a (ii) showing the direction of mandrel movement required to move the tubing anchor catcher from Pos 1A to Pos 2A and the path through which the control pin of the outer slip cage moves by the indicated movement through the control slots of the mandrel;
  • Figure 5b (i) is a side elevation view of the tubing anchor catcher in a wellbore in a tension anchor/rotation position (Pos 2A), which is the same as Figure 5a (ii);
  • Figure 5b (ii) is a side elevation view of the tubing anchor catcher of Figure 5b (i) in an anchor catching position (Pos 3A) in a wellbore;
  • Figure 5b (iii) is a side elevation view of the mandrel of the tubing anchor catcher of Figures 5b (i) and 5b (ii) showing the direction of mandrel movement and the path for moving the tubing anchor catcher from Pos 2A to Pos 3A;
  • Figure 5c (i) is a side elevation view of the tubing anchor catcher of Figure 4 in a transition position near an anchor catching position (Pos 3A) in a wellbore;
  • Figure 5c (ii) is a side elevation view of the tubing anchor catcher of Figure 5c (i) in a run out position (Pos 4A) in a wellbore;
  • Figure 5c (iii) is a side elevation view of the mandrel of the tubing anchor catcher of Figures 5c (i) and 5c (ii) showing the direction of mandrel movement for moving the tubing anchor catcher from Pos 3A to Pos 4A and the path through which the control pin moves through the control slots during this movement;
  • Figure 6 is a side elevation of the tubing anchor catcher of Figure 5a (i) in a run in position (Pos 1A);
  • Figure 7 is a quarter section through the tubing anchor catcher of Figure 6.
  • Figures 1 to 3 illustrate a tubing anchor catcher according to one aspect of the present invention.
  • the tubing anchor catcher includes a mandrel 1 and a slip cage 3 carried rotatably and concentrically on the mandrel.
  • the tubing anchor catcher is intended to be coupled in line to a tubing string T.
  • mandrel 1 has a tubing string tubular of the tubing string coupled, for example threaded, onto its upper threaded end 13a and another tubing string tubular coupled to its lower threaded end or lower sub 13b.
  • the mandrel includes a necked area la between an enlarged upper end lb and an enlarged lower end 1c.
  • the necked area has an outer diameter smaller than the outer diameters at the enlarged ends.
  • the slip cage 3 can ride up and down along the necked area, but cannot move upwardly past the upper enlarged end lb and cannot move downwardly past the lower enlarged end 1c.
  • Slip cage 3 includes a cylindrical housing and a plurality of upper slips 4a carried on the cylindrical housing. There may also be a plurality of lower slips 4b carried on the cylindrical housing.
  • the slip cage cylindrical housing also carries drag blocks 5 biased outwardly by springs 5a ( Figure 7).
  • a retainer clip 6 is coupled, as by a fastener 7, to the cylindrical housing and extends across an outward facing portion of each drag block 5 to act against the biasing springs 5a, to limit the outward extension of the drag blocks.
  • upper slips 4a are each configured integral with a drag block and the lower slips are each configured integral with a drag block.
  • each retainer clip 6 can extend across the combined slip/drag block members between the slip outer facing surface and the drag block outer facing surface, such that the combined members can pivot around their retainer clips. For example, the combined members can rock back and forth, wherein each slip can pivot outwardly, while its attached drag block pivots inwardly and vice versa.
  • Drag blocks 5 permit relative movement between the slip cage and the mandrel.
  • the drag blocks are selected to firmly drag along the wellbore wall when the tubing anchor is moved. This permits the slip cage 3 to remain in place in the well, while mandrel is moved up and down through it. However, if enough force is applied, the drag blocks do move with the tubing string. Normally, springs 5a bias the drag blocks out and ensure that the drags blocks are in contact with the wellbore wall.
  • the plurality of upper slips 4a are normally retracted to a retracted diameter.
  • springs 5a bias the drag blocks out, which pivots the toothed faces of the slips to be retracted.
  • the upper set of slips 4a can, however, be expanded to an expanded diameter, which is larger than the retracted diameter. Expansion of the upper set of slips 4a occurs when frustoconical surface lb' of the enlarged upper end lb of the mandrel is moved down behind the backside 4a' of the slips 4a.
  • Slips 4a are coupled to the slip cage and backsides 4a' are ramped in a reverse angle to frustoconical surface lb' so that when the mandrel is moved down while slip case is retained against movement by the drag blocks, frustoconical surface lb' is driven under the slips 4a and they expand radially outwardly.
  • This is shown in Figure 2b (ii), and identified as Pos 3, Anchor Catcher Position.
  • the tubing anchor catcher lower slips 4b act in a similar manner as upper slips but are expanded by lower frustoconical surface 1c' on the enlarged lower end 1c of the mandrel, to prevent selected instances of upward movement of the tubing string. Generally, this may be used to pull the anchor the tubing string and possibly to pull it into tension, which may be the normal set position of the tubing anchor catcher when it is in use downhole. This position is shown in Figure 2a (ii) and Figure 2b (i), and identified as Pos 2, Tension anchor position.
  • the tubing anchor catcher further includes a J-slot mechanism between mandrel 1 and slip cage assembly 3.
  • the J- slot mechanism includes a J-slot including a pathway of slots 2a and a control pin 2b that rides in the pathway of slots.
  • the J-slot pathway 2a and control pin 2b cooperate such that tubing anchor catcher is configurable between at least the run in position Pos 1, the set, anchor catching position Pos 3 and the run out position Pos 4 by moving the pathway of slots 2a relative to the control pin 2b. This is achieved by axial movement upwardly and/or downwardly of the mandrel through the slip cage.
  • the pathway of slots 2a is a groove on the outer surface of mandrel 1 in the necked area la and control pin 2b is carried, inwardly extending on the inner facing surface of slip cage 3.
  • Movement of the mandrel is achieved by movement of the drill string in which the mandrel is coupled.
  • the tubing anchor catcher is set and operated through the various positions by up and down motion of the mandrel relative to the slip cage. This up and down axially directed movement allows the control pin to initiate the rotation of the mandrel within the slip cage instead of by rotational motion of the tubing string, and thereby the mandrel, from surface. Setting and releasing the tubing anchor catcher through up and down motion is straightforward and easy to control. For moving the tubing anchor catcher from one position to another, there is no need to rotate the tubing string and thereby the mandrel from surface.
  • the movement of the tubing anchor catcher from position to position is by interaction between the pathway of slots and the control pin.
  • the pathway of slots 2a has a plurality of axially extending slots 2a 2a 2 , 2a 3 , 2a 4 , which are each joined one to the next by an angled deflector 2ad.
  • Angled deflectors 2ad are portions of the slot grooves that have side walls shaped with an angular surface leading from one slot to the next, always in one deflecting direction. All of the plurality of slots extend along a length of the mandrel, substantially parallel to the long axis of the mandrel.
  • each of the axially extending slots stop relative to a frustoconical surface determines which position P os 1, P os 2, P os 3 or P os 4 the tubing anchor catcher will be in after the axial movement of the mandrel within the slip cage. More specifically, the pathway of slots has deflectors 2ad positioned about midway between the frustoconical surfaces. There is a short slot 2ai that extends from the midway point a length towards the upper end. An end wall 2a of slot 2ai creates a stop in the slot that spaces the slot a distance from upper frustoconical surface lb'.
  • a long slot 2a 2 Joined to slot 2ai via an angled deflector is a long slot 2a 2 that extends a distance from the angled deflector towards, and has its end wall close to, the frustoconical surface lc' on the lower end.
  • Joined to slot 2a 2 via another angled deflector is an upwardly extending long slot 2a 3 .
  • Long slot 2a 3 extends parallel to slot 2a but has a length longer than slot 2ai such that its end wall 2a 3 ' is close to frustoconical surface lb' on the upper end.
  • Joined to slot 2a 3 via another angled deflector is a downwardly extending short slot 2a 4 .
  • Slot 2a 4 extends parallel to slot 2a 2 , but has a length shorter than slot 2a 2 .
  • Another slot 2ai may be joined via an angled deflector after slot 2a 4 .
  • the control pin and pathway of slots are slidably locked together. Therefore, recalling that downhole slip cage assembly 3 is held in position by the drag blocks, movement of the mandrel up and down forces the slots to move past the control pin. Since the mandrel pathway of slots is restricted to ride over the control pin, movement of the mandrel up and down causes the mandrel to rotate slightly and move to ride over the control pin from slot to slot.
  • the angled deflectors are axially aligned at the opening to each slot and the angled deflectors are angled to force the mandrel to rotate slightly upon moving a slot off the pin, such that the pin engages into the next slot. The mandrel cannot rotate backwards. In the illustrated embodiment, the mandrel is configured to move counterclockwise as the pathway of slots ride over the control pin.
  • the distances between the ends of the slots and the frustoconical surfaces determine how the slips will interact with mandrel.
  • the end walls of slots 2ai and 2a 4 are each spaced far enough from their adjacent frustoconical surfaces such that when those slots are riding on the control pin, the frustoconical surfaces cannot ride under and impact the slips.
  • slips 4a, 4b remain retracted.
  • slots 2a2 and 2a 4 are each close to their adjacent frustoconical surfaces such that when those slots are riding on the control pin, the frustoconical surfaces can ride under and expand the slips.
  • mandrel 1 can be pulled up with the slots moved along path P relative to control pin 2b until frustoconical surface lc' is pulled under slips 4b to bear against the backsides 4b' of the slips and expand those slips out. Slips 4b then jam in between wellbore wall W and the frustoconical surface lc' to allow the tubing string to be pulled up into tension.
  • the tubing anchor catcher has a position Pos 3 where it can catch the tubing if the tubing starts to fall and forces the mandrel rapidly down through the slip cage, for example if the tubing is severed above the tubing anchor catcher.
  • Pos 3 frustoconical surface lb' is forced under slips 4a and they will expand out to hold the slip housing and thereby the mandrel and tubing string T from dropping.
  • the mandrel can be pulled up to move slot 2a 4 over the control pin.
  • slip cage 3 is carried on the mandrel with slips 4b spaced from frustoconical surface lc' and the tubing anchor catcher is free to be pulled to surface with the tubing string.
  • the tubing string can be moved down to move the mandrel into a transitional position, as shown in Figure 2c(i) which is near to Pos 3, but where slips have not jammed against the frustoconical surface lb'. Then, the tubing string can be moved up to bring mandrel 1 into Pos 4, as shown in Figure 2c(ii) for running out.
  • the anchor anchor catcher also has a good annular bypass area between the slips. While there are a plurality of slips, the space between slips 4a, 4b is a relatively thin walled area 3a on the slip cage. Therefore, there is an open area A in the annular space about the tool, which is between each slip and drag block member around the anchor anchor catcher. The open area defines a fluid bypass for the tubing anchor catcher.
  • the slip and drag blocks can be installed within raised sites on the slip cage and have an enlarged outer diameter compared to the smaller outer diameter across the thin walled area.
  • the anchor anchor catcher also has an additional shear out capability allowing the tool to be unset by pulling up until the shear out is achieved. This feature allows the tool to be unset and pulled to surface should any of the mechanisms plug or become seized during its engagement to the casing in the well.
  • Shear pins 11 and shear ring 12, or other shear mechanisms, may be positioned adjacent lower sub 13 to allow the lower frustoconical surface lc' to be sheared away from slips 4b.
  • Figures 4 to 7 illustrate a rotatable version of the tubing anchor catcher.
  • This tubing anchor catcher is similar to the above-noted static tubing anchor catcher ( Figures 1-3), but the embodiment of Figures 4-7 has a mandrel capable of rotating once set in Tension anchor position Pos 2 A in slot 2a 2A .
  • This rotation allows tubing attached to the threaded ends of the mandrel to be rotated while the anchor catcher is set in the well.
  • annular area 2c below the J-slot mechanism pathway of slots 2a that has a uniform outer diameter.
  • Slot 2a 2 A opens into the annular area 2c.
  • There are funneled guide walls 2c' that are raised, stepped up relative to annular area 2c. Funneled guide walls 2c' converge and lead from annular area 2c to slot 2a 2A .
  • the position of the lower limit 2c" of annular indented area 2c is close enough to lower frustoconical surface 1c' such that when slot 2a 2 A is pulled up over control pin 2d, the slips 4b can be expanded out to tensioning position Pos 2 A and while the mandrel can be rotated.
  • the end wall 2a 4A ' of slot 2a 4A is separated from, not open to, annular indented area 2c.
  • the groove of the slot does not extend down to area 2c and there is a raised portion of mandrel that forms end wall 2a 4 A in between. Therefore, when the control pin is in slot 2a 4 A and thereby in the run out position Pos 4A, slips 4b are maintained in a spaced position away from frustoconical surface 1c' and mandrel 1 cannot rotate within the slip cage 3 ( Figure 5c (ii) and (iii)).
  • drag and slip functions can be separated such that drag blocks can act independently of the slips and the slips can be help radially inward by springs or other means and forced outward by contact with the frustoconical surfaces in the upward or downward directions as explained previously.

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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)

Abstract

Un dispositif de capture d'ancre des tiges de production comprend : un mandrin destiné à être relié à une colonne de production et une cage de glissement, le mandrin étant supporté dans un alésage principal de la cage de glissement par un mécanisme de verrouillage en J. Le mécanisme de verrouillage en J configure l'outil entre des positions de descente, de placement et de montée simplement en déplaçant le mandrin axialement à travers la cage de glissement, sans aucune rotation du train de tiges/mandrin requise depuis la surface.
PCT/CA2023/051303 2022-10-03 2023-10-02 Dispositif de capture d'ancre des tiges de production actionné par un mouvement axial de mandrin WO2024073841A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202263412644P 2022-10-03 2022-10-03
US63/412,644 2022-10-03

Publications (1)

Publication Number Publication Date
WO2024073841A1 true WO2024073841A1 (fr) 2024-04-11

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PCT/CA2023/051303 WO2024073841A1 (fr) 2022-10-03 2023-10-02 Dispositif de capture d'ancre des tiges de production actionné par un mouvement axial de mandrin

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327975A (en) * 1991-04-08 1994-07-12 Rotating Production Systems, Inc. Tubing anchor catcher with rotating mandrel
US7347273B2 (en) * 2005-10-21 2008-03-25 Stellarton Technologies Inc. Bottom hold completion system for an intermittent plunger
US20140262343A1 (en) * 2013-03-15 2014-09-18 Don Larsen Rotatable tubing anchor
US20160251939A1 (en) * 2014-12-29 2016-09-01 Ncs Multistage Inc. Tool for opening and closing sleeves within a wellbore
US20180163490A1 (en) * 2015-06-11 2018-06-14 Dreco Energy Services Ulc Dual direction j-slot tool
CA3181034A1 (fr) * 2021-11-03 2023-05-03 Oilify New-Tech Solutions Inc. Mecanisme d'ancrage en fond de trou

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327975A (en) * 1991-04-08 1994-07-12 Rotating Production Systems, Inc. Tubing anchor catcher with rotating mandrel
US7347273B2 (en) * 2005-10-21 2008-03-25 Stellarton Technologies Inc. Bottom hold completion system for an intermittent plunger
US20140262343A1 (en) * 2013-03-15 2014-09-18 Don Larsen Rotatable tubing anchor
US20160251939A1 (en) * 2014-12-29 2016-09-01 Ncs Multistage Inc. Tool for opening and closing sleeves within a wellbore
US20180163490A1 (en) * 2015-06-11 2018-06-14 Dreco Energy Services Ulc Dual direction j-slot tool
CA3181034A1 (fr) * 2021-11-03 2023-05-03 Oilify New-Tech Solutions Inc. Mecanisme d'ancrage en fond de trou

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