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BR-112023018868-B1 - Mechanism for setting and recovering a wellbore tool, method for recovering a downhole tool and wellbore system.

BR112023018868B1BR 112023018868 B1BR112023018868 B1BR 112023018868B1BR-112023018868-B1

Abstract

The present invention relates to a setup and recovery mechanism for a downhole tool including a chuck, a body locking ring disposed over the chuck, a body locking ring engagement member engaged and disengageable with the body locking ring, and a setup load and recovery sleeve disposed over the chuck and having a support region for the engagement member and a release region for the engagement member. A method for recovering a downhole tool includes moving a setup and recovery sleeve to position a release region for the setup and recovery tool engagement member to allow disengagement of an engagement member with a body locking ring, applying a pulling force to the setup and recovery sleeve, disengaging the engagement sleeve from the body locking ring under the impulse of the pulling force on the setup and recovery sleeve, and releasing energy captured in the downhole tool by means of the disengagement and pulling force on the setup and recovery sleeve.

Inventors

  • Wilfred Provost

Assignees

  • BAKER HUGHES OILFIELD OPERATIONS LLC

Dates

Publication Date
20260310
Application Date
20220315
Priority Date
20210318

Claims (19)

  1. 1. Settling and retrieval mechanism (10, 110) for a well tool characterized by comprising: a mandrel (12); a body locking ring (22, 122) disposed over the mandrel (12); a body locking ring engagement member (28, 128) engaged and disengaged with the body locking ring (22, 122); a settling and retrieval load sleeve (16) disposed over the mandrel (12) and having a support region for the engagement member (32, 132) and a release region for the engagement member (34, 134); and a tool interface movably engaged with the settling and retrieval sleeve, the tool interface including a clearance hole with an inner diameter larger than an outer diameter of the body locking ring (22, 122).
  2. 2. Settling and recovery mechanism (10, 110), according to claim 1, characterized by additionally including a recovery hook (36) on the settling and recovery load sleeve (16).
  3. 3. Settling and retrieval mechanism (10, 110), according to claim 1, characterized in that the locking ring of the body (22, 122) includes inner surface serrations in a one-way ratchet engagement with outer surface serrations of the chuck.
  4. 4. Settling and recovery mechanism (10, 110), according to claim 1, characterized in that the body locking ring (22, 122) includes outer surface serrations (26) that can be ratcheted in the same direction as the unidirectional serrations (22, 122) that can be ratcheted on an inner surface of the body locking ring.
  5. 5. Settling and recovery mechanism (10, 110), according to claim 4, characterized in that the outer surface serrations (26) of the body locking ring include a flank having an angle of 60 degrees or less measured from a longitudinal axis of the body locking ring (22, 122).
  6. 6. Settling and recovery mechanism (10, 110), according to claim 1, characterized in that the engagement member includes serrations that can be ratcheted in a recovery direction.
  7. 7. Settling and recovery mechanism (10, 110), according to claim 1, characterized in that the load settlement passes through a shoulder (40) of the settling and recovery load sleeve (16) in contact with the engagement member (28, 128) and from the engagement member (28, 128) in contact with a settling sleeve (16).
  8. 8. Settling and recovery mechanism (10, 110), according to claim 1, characterized in that the release region of the engagement member (34, 134) provides sufficient radial space to allow the engagement member (28, 128) to disengage from the body locking ring (22, 122).
  9. 9. Settling and recovery mechanism (10, 110), according to claim 8, characterized in that the radial movement of the engagement member (28, 128) in the radial space is facilitated by a serration angle that engages the engagement member (28, 128) to the locking ring of the body (22, 122).
  10. 10. Settling and recovery mechanism (10, 110), according to claim 9, characterized in that the angle is 60 degrees or less measured from a longitudinal axis of the coupling member (28, 128).
  11. 11. Settlement and recovery mechanism (10, 110), according to claim 1, characterized in that the support region (32, 132) and the release region (34, 134) are each a collection of regions and are configured as a castle.
  12. 12. Settling and recovery mechanism (10, 110), according to claim 11, characterized in that the engagement member (28, 128) exhibits a complementary castellation.
  13. 13. Settling and recovery mechanism (10, 110), according to claim 1, characterized by additionally including a release member that restricts the movement of the settling and recovery sleeve.
  14. 14. Settling and recovery mechanism (10, 110), according to claim 13, characterized in that the release member is a shear screw.
  15. 15. Method for recovering a downhole tool characterized by comprising: moving a seating and recovery sleeve (16) to position a release region of the engagement member (28, 128) of the seating and recovery sleeve (16) to allow the disengagement of an engagement member with a body locking ring (22, 122), the body locking ring (22, 122), until disengagement, maintaining energy accumulated in the downhole tool; allocating a traction force on the seating and recovery sleeve (16); disengaging the engagement member from the body locking ring (22, 122) under the impulse of the traction force on the seating and recovery sleeve (16); release energy captured in the downhole tool by means of disengagement and traction force on the settling and recovery sleeve (16), including moving a tool interface that has a clearance hole, the hole having an inner diameter larger than the outer diameter of the body locking ring (22, 122).
  16. 16. Method according to claim 15, characterized in that the movement of the settling and retrieval sleeve (16) is pulled from an uphole location (42).
  17. 17. Method according to claim 15, characterized in that the disengagement includes actuating the engagement member (28, 128) in the opposite direction to the locking ring of the body (22, 122) with serrations (14).
  18. 18. Well system (150) characterized by comprising: a wellbore (152) in a subsurface formation (154); a string (156) in the wellbore (152); and a settling and recovery mechanism (10, 110), as defined in claim 1, arranged with the string (156).
  19. 19. Settling and retrieval mechanism (10, 110) for a well tool characterized by comprising: a mandrel (12); a body locking ring (22, 122) disposed over the mandrel (12); a body locking ring engagement member (28, 128) engaged and disengaged with the body locking ring (22, 122); a settling and retrieval load sleeve (16) disposed over the mandrel (12) and having a support region for the engagement member (32, 132) and a release region for the engagement member (34, 134), the settling and retrieval load sleeve including a retrieval hook.

Description

BACKGROUND [001] In the resource recovery sector, tools are installed in a wellbore and set with reference to various purposes. Some of these tools are permanently installed, but some must be recoverable. Recoverable tools include devices to relieve stress on one or another of the components of a specific tool so that the energy trapped in the tool from the setting process can be released, thus facilitating recovery. Although recovery mechanisms exist in the art that function for this purpose, there are also difficulties related to accessing the stress-relieving device due to other tools being in the way or debris collected in the tool obscuring the recovery device. The art will benefit from additional recovery mechanisms that provide reliability. SUMMARY [002] The present embodiment relates to a seating and retrieval mechanism for a well tool including a mandrel, a body locking ring disposed over the mandrel, a body locking ring engagement member engaged and disengaged with the body locking ring, and a seating and retrieval load sleeve disposed over the mandrel and having a support region for the engagement member and a release region for the engagement member. [003] Method for retrieving a downhole tool including moving a settling and retrieval sleeve to position a release region of the settling and retrieval tool engagement member to allow disengagement of an engagement member with a body locking ring, applying a pull force to the settling and retrieval sleeve, disengaging the engagement sleeve from the body locking ring under the impulse of the pull force on the settling and retrieval sleeve, and releasing energy captured in the downhole tool by means of the disengagement and pull force on the settling and retrieval sleeve. BRIEF DESCRIPTION OF THE DRAWINGS [004] The following descriptions should not be considered limiting in any respect. With reference to the attached drawings, similar elements are numbered similarly: [005] Figure 1 is a cross-sectional view of a tool having a recovery mechanism as presented in the present invention before the tool is seated; [006] Figure 2 is the mechanism in the defined position; [007] Figure 3 is the mechanism in the release position; [008] Figure 3a is an enlarged portion of Figure 3 to elucidate the details; [009] Figure 4 is the mechanism in the recovery position; [0010] Figure 5 is an alternative mode in a defined position; [0011] Figure 6 is the alternative form of Figure 5 in the release position; and [0012] Figure 7 is a well system that includes a tool with the release mechanism in it. DETAILED DESCRIPTION [0013] This document presents a detailed description of one or more embodiments of the apparatus and method disclosed herein by way of example, but without any limitation with reference to the Figures. [0014] With reference to Figures 1 to 4, a first embodiment of a seating and retrieval mechanism 10 is illustrated. In Figure 1, the mechanism 10 is in an operating condition. The mechanism includes a mandrel 12 which has serrations (“wickers”) 14 on it. A seating and retrieval sleeve 16 is radially arranged outward from the mandrel 12 and slides on it. The sleeve 16 is operationally connected to an actuator sleeve 18 which allows the actuator sleeve 18 to enter by pushing the bottom hole or pulling the uphole to impart the same movement on the seating and retrieval sleeve 16. In one embodiment, this occurs via a thread 20. In a position adjacent to the seating and retrieval sleeve 16 is a body locking ring 22, which has serrations 24 on an inner surface thereof and serrations 26 on an outer surface thereof. Also adjacent to the sleeve 16 is an engagement member 28, having internal surface serrations 30 that engage with external surface serrations 26 of the body locking ring 22. The seating and retrieval sleeve 16 defines a support region for the engagement member 32 and a release region for the engagement member 34. The sleeve 16 also includes a removal hook 36. Finally illustrated is a tool interface 38 that transmits both a compressive load to the tool during seating and a tensile load to the tool during retrieval. [0015] With reference to Figure 2, the seating and recovery mechanism 10 is in the defined position. It should be noted that the seating and recovery sleeve 16 has moved relative to the chuck 12. A load from the uphole is transmitted through the sleeve 18 into the sleeve 16 and then through the shoulder 40 of the sleeve 16 into the well end 42 of the engagement member 28, from the through member 28 to the bottom end 44 into the surface 46 of the tool interface 38. All these components move in the direction of the bottom hole together. The body locking ring (BLR) 22 is also engaged with the engagement member 28, so that the body locking ring 22 also moves in the wellbore relative to the chuck 12. The BLR 22 is segmented, or a C-ring or similar, so that it can ratchet along the chuck 12's serrations 14 as it moves in the direction of the wellbore