Contact plunger cartridge assembly

Patent metadata

Field	Value
Publication number	US-11283207-B2
Application number	US-202017127477-A
Country	US
Kind code	B2
Filing date	Dec 18, 2020
Priority date	Nov 12, 2015
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

An electrical connector apparatus for use in a downhole tool comprising a housing, a contact screw within outer threads and inner threads, a contact plunger within the inner bore of the housing and a second cylinder protruding from the first cylinder. The contact spring is located between the contact plunger and the contact screw and pre-loads the contact plunger within the housing.

First claim

What is claimed is:

1. A downhole tool string assembly comprising:
a cablehead adapted to interface with a wireline suspended from a surface location;
a casing collar locator located proximate and downhole from the cablehead;
a double seal contact sub located proximate and downhole from the casing collar locator;
a first electrical cartridge connector electrically coupling the cablehead to a first electrical cartridge attached to the casing collar locator;
a gun top sub located proximate and downhole from the double seal contact sub;
a second electrical cartridge connector electrically coupling the double seal contact sub to the gun top sub;
a gun assembly located proximate and downhole from the gun top sub;

and a gun bottom sub located proximate and downhole from the gun assembly.

2. The downhole tool string assembly of claim 1 wherein the first electrical cartridge connector further comprises:
a housing defining a cylinder with a first end, a second end, a central axis, having an inner bore with an open end at the first end of the cylinder, and having an axial through hole at the second end of the cylinder;
a contact screw defining a cylindrical body sharing the central axis with a first end and a second end, having outer threads on the cylindrical body, and having an inner through bore with inner threads, wherein the contact screw is disposed within the inner bore of the housing;
a contact plunger defining a first cylinder adapted to slideably engage with the inner bore of the housing and a second cylinder protruding from the first cylinder, slideably engaged with the through hole of the housing, and having a distal end;
a contact spring with a first end and a second end disposed within the inner bore of the housing between the contact plunger and the contact screw, wherein the first end is engaged with the first cylinder of the contact plunger and the second end is engaged with the first end of the contact screw.

3. The downhole tool string assembly of claim 2 , wherein the electrical cartridge connector is adapted to engage a GO-Box pin electrical connector.

4. The downhole tool string assembly of claim 2 , wherein the housing is composed of an electrically non-conductive material.

5. The downhole tool string assembly of claim 2 , wherein the contact spring is electrically conductive.

6. The downhole tool string assembly of claim 2 , wherein the contact screw is electrically conductive.

7. The downhole tool string assembly of claim 2 , the contact screw further including a through slot tangentially located on the first end.

8. The downhole tool string assembly of claim 2 , the housing further includes a portion of the inner bore having threads at the first end adapted to engage the outer threads of the contact screw.

9. The downhole tool string assembly of claim 2 , the housing further including an exterior hex shaped feature at the second end.

10. The downhole tool string assembly of claim 2 , wherein the contact screw is adapted to accept a contact rod threaded into the second end of the contact screw.

Assignees

• Hunting Titan Inc

Inventors

• Langford Dale
• Lane Andy
• Blain Rick

Classifications

• E21B43/119

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

• E21B17/0285

  characterised by electrically insulating elements · CPC title

• F42D1/04

  Arrangements for ignition {(ignition systems for shaped charge perforators E21B43/1185; ignition devices for seismic energy generators G01V1/06)} · CPC title

• H01R13/533

  Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure (H01R13/52 takes precedence) · CPC title

• E21B43/1185 Primary

  Ignition systems · CPC title