Granted Patent B2

US 12,624,607 · App. 18/803,338 · Granted May 12, 2026

Inventors: Brian Craig (Aberdeen, GB); Malcolm David Finlayson (Aberdeen, GB); Michael Donnelly (Aberdeen, GB); Timothy Crowther (Brechin, GB); Andrew Hughes (Aberdeen, GB)

Assignee: Baker Hughes Energy Technology UK Limited

E21B33/04E21B47/06

Abstract

Claims (50)

1 . A system for a re-entry tool to be used with oilfield equipment, comprising:

a stinger comprising flushing holes to enable fluid for flushing through the re-entry tool and into one or more of an Xmas tree head, tubing hanger, or crown plug;

one or more sleeves external to the stinger and comprising flushing slots to enable circulation of the fluid from the Xmas tree head, tubing hanger, or crown plug to an external environment relative to the Xmas tree head, tubing hanger, or crown plug; and

one or more orientation keys to enable alignment of each of the one or more sleeves with respect to each other and with respect to the stinger within the re-entry tool.

2 . The system of claim 1 , wherein the stinger is capable of being in one or more of an extended position or a retracted position relative to the re-entry tool.

3 . The system of claim 1 , further comprising:

a plurality of dogs extending through at least one of the one or more sleeves, the plurality of dogs to engage the Xmas tree head to provide a locking of the re-entry tool with respect to the Xmas tree head.

4 . The system of claim 1 , further comprising:

a shoulder of the Xmas tree head; and

a surface of the re-entry tool, the surface to enable landing the re-entry tool on the shoulder during the flushing through the re-entry tool and into an Xmas tree head.

5 . The system of claim 1 , further comprising:

a stinger retainer cap to allow the stinger to be retained in a retracted position relative to the re-entry tool and to allow the stringer to move to an extended position relative to the re-entry tool.

6 . The system of claim 1 , further comprising:

a latching profile of the Xmas tree head to allow receipt of the stinger in an extended position and to allow landing of the re-entry tool thereon.

7 . The system of claim 1 , further comprising:

a first latch piston of the one or more sleeves, the first latch piston to cause engagement or disengagement of a plurality of dogs with respect to the Xmas tree head, wherein the engagement of the plurality of dogs with respect to the Xmas tree head enables overpull, pressure testing, and wireline operations using the re-entry tool, and wherein disengagement of the plurality of dogs allows, at least in part, retraction of the re-entry tool.

8 . The system of claim 1 , further comprising:

a second latch piston of the one or more sleeves, the second latch piston to be in one of a retracted position or an extended position, wherein the retracted position enables an unbalanced load in the re-entry tool to allow, at least in part, retraction of the re-entry tool, wherein the extended position allows removal of the tubing hanger from the Xmas tree head.

9 . The system of claim 1 , further comprising:

one or more break rings within the one or more sleeves, the one or more break rings to be an unbroken status in normal operations of the re-entry tool and to be in a broken status during an emergency operation in the re-entry tool, the broken status to allow for an unbalanced load on a latch piston to further allow, at least in part, retraction of the re-entry tool.

10 . A method for a re-entry tool to be used with oilfield equipment, comprising:

providing a stinger that comprises flushing holes within the re-entry tool;

enabling fluid for flushing through the stinger and into one or more of an Xmas tree head, tubing hanger, or crown plug;

enabling one or more sleeves that are external to the stringer and comprising flushing slots to circulate the fluid from the Xmas tree head, tubing hanger, or crown plug to an external environment relative to the Xmas tree head; and

enabling, using one or more orientation keys, alignment of each of the one or more sleeves with respect to each other and with respect to the stinger within the re-entry tool.

11 . The method of claim 10 , wherein the stinger is capable of being in one or more of an extended position or a retracted position relative to the re-entry tool.

12 . The method of claim 10 , further comprising:

extending a plurality of dogs through at least one of the one or more sleeves; and

causing the plurality of dogs to engage the Xmas tree head to provide a locking of the reentry tool with respect to the Xmas tree head.

13 . The method of claim 10 , further comprising:

providing a shoulder of the Xmas tree head and a surface of the re-entry tool;

landing the re-entry tool on the Xmas tree head at an interface of the shoulder and the surface;

enabling the flushing through the re-entry tool and into an Xmas tree head prior to the landing, during the landing, and after the landing.

14 . The method of claim 10 , further comprising:

allowing, using a stinger retainer cap, the stinger to be retained in a retracted position relative to the re-entry tool; and

allowing the stringer to move to an extended position relative to the re-entry tool.

15 . The method of claim 10 , further comprising:

allowing the stinger, in an extended position, to be received into a latching profile of the Xmas tree head; and

allowing landing of the re-entry tool on the latching profile of the Xmas tree head, wherein the stinger is moved from the extended position to a retracted position during the landing.

16 . The method of claim 10 , further comprising:

enabling a first latch piston to be movable within the one or more sleeves; and

causing, using the first latch piston, engagement or disengagement of a plurality of dogs with respect to the Xmas tree head, wherein the engagement of the plurality of dogs with respect to the Xmas tree head enables overpull, pressure testing, and wireline operations using the reentry tool, and wherein disengagement of the plurality of dogs allows, at least in part, retraction of the re-entry tool.

17 . The method of claim 10 , further comprising:

enabling a second latch piston of the one or more sleeves to be in one of a retracted position or an extended position;

enabling, in the retracted position of the second latch piston, an unbalanced load in the reentry tool to allow, at least in part, retraction of the re-entry tool; and

enabling, in the extended position of the of the second latch piston, removal of the tubing hanger from the Xmas tree head.

18 . The method of claim 10 , further comprising:

enabling one or more break rings within the one or more sleeves to be an unbroken status in normal operations of the re-entry tool;

causing the one or more break rings to be in a broken status during an emergency operation in the re-entry tool; and

allowing, in the broken status of the one or more break ring, retraction of the re-entry tool.

Assignments (1)

Continuity (2)

References Cited (37)