Tool housing for use in a wellbore tool string

Patent metadata

Field	Value
Publication number	US-12421809-B2
Application number	US-202218553376-A
Country	US
Kind code	B2
Filing date	Apr 11, 2022
Priority date	Apr 12, 2021
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A tool housing for use in a wellbore tool string may include a housing body having a first housing region and a second housing region. The tool housing may include a bias member channel provided in the first housing region and extending inward in a radial direction. A bias member may be provided within the bias member channel and engaged with a snap connector. The bias member may bias the snap connector outward in the radial direction. A connector groove may be provided in a hollow interior of the second housing region and extend outward in the radial direction. A first housing region of a second tool housing of a wellbore tool string may be inserted into a hollow interior of a first tool housing. A snap connector of the second tool housing may be coupled with a connector groove of the first tool housing.

First claim

What is claimed is:

1. A wellbore tool connection assembly, comprising:
a tool housing comprising a first housing region having a first outer diameter and a second housing region having a second outer diameter, the second outer diameter being larger than the first outer diameter;
a bias member channel provided in the first housing region and extending inward in a radial direction from a first outer surface of the first housing region;
a bias member provided within the bias member channel;
a snap connector engaged with the bias member such that the bias member biases the snap connector outward in the radial direction;
a recess extending inward in the radial direction from the first outer surface of the first housing region, the recess being bound by a recess wall; and
a retainer screw engaged with the snap connector and extending inward in the radial direction into the recess such that the bias member biases the retainer screw against the recess wall.

2. The wellbore tool connection assembly of claim 1 , further comprising:
a hollow interior provided within the second housing region, the hollow interior being bound by a hollow interior surface having a hollow interior diameter greater than or equal to the first outer diameter;
a connector groove extending outward in the radial direction from the hollow interior surface, the connector groove having a groove diameter greater than the hollow interior diameter and less than the second outer diameter; and
a release opening extending from a second outer surface of the second housing region to the connector groove.

3. The wellbore tool connection assembly of claim 2 , further comprising:
a blast absorber provided in the hollow interior of the tool housing, the blast absorber comprising a blast absorber outer wall in contact with the hollow interior surface and a blast absorber inner wall extending radially inward from the blast absorber outer wall.

4. The wellbore tool connection assembly of claim 1 , wherein:
the bias member channel is one of a plurality of bias member channels;
the bias member is one of a plurality of bias members, each bias member of the plurality of bias members being provided within a different bias member channel of the plurality of bias member channels; and
the snap connector is one of a plurality of snap connectors, each snap connector of the plurality of snap connectors being engaged with a different bias member of the plurality of bias members.

5. The wellbore tool connection assembly of claim 1 , wherein:
the retainer screw is one of two retainer screws;
the recess is one of a first recess and a second recess extending inward in the radial direction from the first outer surface of the first housing region, the two recesses circumferentially spaced apart from one another; and
each retainer screw is engaged with the snap connector such that the bias member biases a first retainer screw against a recess wall of the first recess and a second retainer screw against a recess wall of the second recess.

6. The wellbore tool connection assembly of claim 1 , wherein the retainer screw and the bias member intersect with a common plane that includes a central axis of the tool housing.

7. The wellbore tool connection assembly of claim 1 , wherein the snap connector comprises a chamfer contact surface that is non-parallel with the radial direction.

Assignees

• DynaEnergetics Europe GmbH

Inventors

• Eitschberger Christian
• Sever Atakan

Classifications

• E21B43/119

  Details, e.g. for locating perforating place or direction · CPC title

• E21B17/0465 Primary

  characterised by radially inserted locking elements · CPC title

• E21B43/116 Primary

  Gun or shaped-charge perforators · CPC title