Interchangeable lead impression block

Patent metadata

Field	Value
Publication number	US-11965414-B2
Application number	US-202117477254-A
Country	US
Kind code	B2
Filing date	Sep 16, 2021
Priority date	Sep 16, 2021
Publication date	Apr 23, 2024
Grant date	Apr 23, 2024

Abstract

Systems and methods for obtaining a shape of a component within a subterranean well with an impression tool includes the impression tool having a top sub. The top sub is an elongated member having a central axis and a downhole facing surface. A threaded recess of the top sub extends axially from the downhole facing surface. A bottom body section has a block body, a lead impression block positioned at a downhole side of the block body, and a threaded member located at an uphole side of the block body. The threaded member of the bottom body section threadingly engages the threaded recess of the top sub. The bottom body section is operable to be selectively threaded to, and unthreaded from, the top sub.

First claim

What is claimed is:

1. An impression tool for obtaining a shape of a component within a subterranean well, the impression tool having:
a top sub, the top sub being an elongated member having a central axis and a downhole facing surface;
a threaded recess of the top sub extending axially from the downhole facing surface; and
a bottom body section comprising,
a block body,
a lead impression block, and
a threaded member having an outer surface, an uphole end, a downhole end, and threads extending between the uphole end and downhole end, the downhole end threadingly attached to an uphole side of the block body and the uphole end threadingly engaged with the threaded recess.

2. The impression tool of claim 1 , where the bottom body section is operable to be selectively secured to, and removed from, the top sub by hand.

3. The impression tool of claim 1 , where the threaded recess and the threaded member are centered along the central axis of the top sub.

4. The impression tool of claim 1 , where the top sub further includes a fish neck, the fish neck having a reduced neck portion and an enlarged neck portion, an outer diameter of the reduced neck portion being smaller than an outer diameter of the enlarged neck portion.

5. The impression tool of claim 1 , where the top sub has a cylindrical shape and the bottom body section has a cylindrical shape.

6. The impression tool of claim 5 , where the top sub has a maximum outer diameter that is fixed, and the bottom body section has a maximum outer diameter that is selectable.

7. A system for obtaining a shape of a component within a subterranean well, the system having:
an impression tool secured to a delivery string, the impression tool having:
a top sub, the top sub being an elongated member having a central axis, a connector member located at a terminal uphole end of the top sub, and a threaded recess located at a terminal downhole end of the top sub;
a bottom body section, the bottom body section having a block body, a lead impression block positioned at a downhole side of the block body, and a threaded member having a downhole end threaded to an uphole side of the block body and an uphole end selectively threaded into the threaded recess, so that
the bottom body section is operable to be selectively threaded to, and unthreaded from, the top sub;
the connector member secures the impression tool to the delivery string; and
the delivery string extends from an earth's surface into a wellbore of the subterranean well a sufficient distance for the impression tool to engage the component within the wellbore.

8. The system of claim 7 , where the threaded recess and the threaded member are centered along the central axis of the top sub.

9. The system of claim 7 , where the bottom body section has a bottom body section maximum outer diameter, and where the bottom body section maximum outer diameter is selectable.

10. The system of claim 7 , where the bottom body section is operable to be changed by hand, and where the lead impression block is retained with the block body when the bottom body section is changed.

11. The system of claim 7 , where the bottom body section is operable to be changed by hand solely by relative rotation between the top sub and the bottom body section; where the relative rotation is about the central axis of the top sub.

12. A method for obtaining a shape of a component within a subterranean well with an impression tool, the method including:
providing the impression tool having:
a top sub, the top sub being an elongated member having a central axis, a connector member located at a terminal uphole end of the top sub, and a threaded recess located at a terminal downhole end of the top sub; and
a bottom body section, the bottom body section having a block body, a lead impression block positioned at a downhole side of the block body, and a threaded member having a downhole end threadingly attached to an uphole side of the block body;

threadingly engaging an uphole end of the threaded member of the bottom body section with the threaded recess of the top sub;
limiting axial and radial movement between the lead impression block and block body with a shoulder in the block body and pin that extends radially between the lead impression block and block body;
securing the impression tool to a delivery string;
extending the delivery string from an earth's surface into a wellbore of the subterranean well a sufficient distance for the impression tool to engage the component within the wellbore; where
the connector member secures the impression tool to the delivery string; and

the bottom body section is selectively threaded to, and unthreaded from, the top sub; and
replacing the bottom body section with a replacement bottom body section selected from a collection of replacement bottom body sections having variable maximum outer diameters.

13. The method of claim 12 , further including retrieving the impression tool from the subterranean well with the delivery string.

14. The method of claim 12 , where the top sub has a cylindrical shape with a top sub maximum outer diameter, and the bottom body section has a cylindrical shape with a bottom body section maximum outer diameter, where the top sub maximum outer diameter is fixed and the bottom body section maximum outer diameter is selectable.

15. The method of claim 12 , where the bottom body section has a bottom body section maximum outer diameter and where the bottom body section is an initial bottom with an initial bottom maximum outer diameter, and where an upper surface of the replacement bottom body section has a maximum outer diameter greater than a maximum outer diameter than the bottom body section.

16. The method of claim 15 , further including removing the initial bottom solely by relative rotation between the top sub and the initial bottom, where the relative rotation is about the central axis of the top sub.

17. The method of claim 15 , further including installing the replacement bottom solely by relative rotation between the top sub and the replacement bottom, where the relative rotation is about the central axis of the top sub.

18. The method of claim 15 , where the lead impression block of the initial bottom is retained with the block body of the initial bottom, and the lead impression block of the replacement bottom is retained with the block body of the replacement bottom.

19. The method of claim 12 , where threads are formed on an outer surface of the threaded member that extend between the uphole and downhole ends of the threaded member.

Assignees

• Saudi Arabian Oil Co

Inventors

• Nafa Hamed
• Al-Hajjaji Majid
• Al-Ahmadi Adel Khalil

Classifications

• E21B47/01 Primary

  Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like · CPC title

• E21B17/042

  Threaded · CPC title

• E21B47/098 Primary

  using impression packers, e.g. to detect recesses or perforations · CPC title