Ballistically actuated wellbore tool

Patent metadata

Field	Value
Publication number	US-12410667-B2
Application number	US-202218704876-A
Country	US
Kind code	B2
Filing date	Oct 10, 2022
Priority date	Oct 25, 2021
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A ballistically actuated plug ( 2100 ) for being deployed in a wellbore casing includes a ballistic housing ( 2106 ) and an outer seal housing ( 2102 ). The ballistic housing includes a first housing portion including a chamber ( 2208 ), and a second housing portion having a noncompressible core. The outer seal housing is circumferentially disposed around the noncompressible core ( 2216 ). According to an aspect, the initiator ( 2206 ) is positioned within the chamber and a detonation extender ( 2222 ) is in ballistic communication with the initiator and is circumferentially disposed around the noncompressible core. The detonation extender is configured to, upon detonation, expand the outer seal housing ( 2102 ) from an unexpanded form to an expanded form to secure the outer seal housing within the wellbore casing.

First claim

What is claimed is:

1. A ballistically actuated plug for being deployed in a wellbore casing, comprising:
a ballistic housing comprising a first housing portion including a chamber, and a second housing portion having a noncompressible core;
an initiator positioned within the chamber;
a detonation extender in ballistic communication with the initiator and circumferentially disposed around the noncompressible core;
an outer seal housing circumferentially disposed around the noncompressible core, and
a recess formed in an outer surface of the second housing portion;
a first sealing mechanism positioned around the outer surface of the second housing portion; and
a second sealing mechanism positioned around the outer surface of the second housing portion;
wherein the detonation extender is configured, upon detonation, to expand the outer seal housing from an unexpanded form to an expanded form to secure the outer seal housing within the wellbore casing;
the recess is configured to receive the detonation extender;
the recess extends between the first sealing mechanism and the second sealing mechanism; and
the first sealing mechanism and the second sealing mechanism are both spaced apart from the recess.

2. The ballistically actuated plug of claim 1 , wherein a channel extends from the chamber of the first housing portion to the recess, such that at least a portion of the detonation extender is positioned in the channel.

3. The ballistically actuated plug of claim 2 , wherein the detonation extender is at least one of detonating cord and a plurality of compressed explosive pellets.

4. The ballistically actuated plug of claim 2 , wherein the detonation extender is a detonating cord wrapped around the noncompressible core to form at least two layers of detonating cord.

5. The ballistically actuated plug of claim 4 , wherein the two layers of detonating cord are wrapped around the noncompressible core in a staggered configuration.

6. The ballistically actuated plug of claim 1 , wherein the ballistic housing is formed from a single monolithic piece of metal.

7. The ballistically actuated plug of claim 1 , wherein the outer seal housing further comprises:
a first end;
a second end opposite the first end; and
an opening extending between the first end and the second end,
wherein the recess formed in the outer surface of the second housing portion is positioned in the opening.

8. The ballistically actuated plug of claim 1 , wherein the outer seal housing has an external surface, and the external surface comprises a plurality of outwardly facing surface features configured to engage an inner surface of a wellbore casing.

9. A ballistically actuated plug for being deployed in a wellbore casing, comprising:
a ballistic housing comprising a first housing portion including a chamber, and a second housing portion extending from the first housing portion;
an initiator positioned within the chamber;
a detonation extender in side-by-side contact with the initiator and extending from the chamber to an outer surface of the second housing portion;
an outer seal housing circumferentially disposed around the second housing portion;
a recess formed in the outer surface of the second housing portion;
a first sealing mechanism positioned around the outer surface of the second housing portion; and
a second sealing mechanism positioned around the outer surface of the second housing portion,
wherein the detonation extender is configured, upon detonation, to expand the outer seal housing from an unexpanded form to an expanded form to secure the outer seal housing within the wellbore casing;
the recess is configured to receive the detonation extender;
the recess extends between the first sealing mechanism and the second sealing mechanism, and
the first sealing mechanism and the second sealing mechanism are both spaced apart from the recess.

10. The ballistically actuated plug of claim 9 , wherein the second housing portion comprises a noncompressible core.

11. The ballistically actuated plug of claim 9 , wherein the detonation extender extends from the chamber and is circumferentially disposed around the second housing portion.

12. The ballistically actuated plug of claim 11 , wherein a channel extends from the chamber of the first housing portion to the recess, such that at least a portion of the detonation extender is positioned in the channel.

13. The ballistically actuated plug of claim 12 , wherein the detonation extender is a detonating cord wrapped around the second housing portion to form at least two layers of detonating cord, and wherein the two layers of detonating cord are wrapped around the second housing portion in a staggered configuration.

14. The ballistically actuated plug of claim 9 , wherein the outer seal housing has an external surface, and the external surface comprises:
a plurality of outwardly facing surface features; and
a sealing band extending around the external surface of the outer seal housing,
wherein the plurality of outwardly facing surface features and the sealing band are configured to engage an inner surface of a wellbore casing.

Assignees

• DynaEnergetics Europe GmbH

Inventors

• Eitschberger Christian
• Scharf Thilo
• Burmeister Gernot Uwe

Classifications

• E21B43/116

  Gun or shaped-charge perforators · CPC title

• E21B33/12

  Packers; Plugs (used for cementing E21B33/134, E21B33/16) · CPC title

• E21B29/10

  Reconditioning of well casings, e.g. straightening · CPC title

• E21B33/134

  Bridging plugs · CPC title

• E21B23/0414 Primary

  using explosives · CPC title