Granted Patent B2

US 12,252,964 · App. 18/252,575 · Granted Mar 18, 2025

Inventors: Andrew Prisbell (Sugar Land, TX); Erick Lowe (Clamart, FR); Hari Prakash Kalakonda (Pune, IN); Jay Garza (La Marque, TX)

Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION

E21B43/117E21B43/1185E21B43/119

Abstract

Claims (26)

1. A perforation tool, comprising:

a container with a longitudinal axis;

an initiator module in the container, the initiator module having a firing circuit, an electrical contact at the longitudinal axis, and a detonator housing;

a shaped charge frame in the container, the shaped charge frame having:

a first end;

a second end opposite the first end;

a recess for accepting a shaped charge between the first end and the second end, the recess having a wide end and a narrow end, wherein the longitudinal axis is between the wide end and the narrow end;

a first electrical contact at the first end, the first electrical contact located at the longitudinal axis;

a second electrical contact at the second end, the second electrical contact located at the longitudinal axis;

an electrical conductor connecting the first and second contacts, the electrical conductor detachably disposed in a longitudinal passage at a periphery of the shaped charge frame;

a ballistic pathway coupling the detonator housing to the narrow end of the recess; and

an opening to receive a weight; and

a non-symmetric bulkhead member, the shaped charge frame being between the non-symmetric bulkhead member and the initiator module.

2. The perforation tool of claim 1 , wherein the detonator housing is located along the longitudinal axis.

3. The perforation tool of claim 1 , wherein the ballistic pathway comprises a detonation cord.

4. The perforation tool of claim 1 , wherein each of the first and second electrical contacts is a flat spring contact.

5. A frame for a shaped charge, the frame comprising:

a body having a central longitudinal axis, a first end, a second end opposite the first end;

a receptacle for a shaped charge, the receptacle having a wide end and a narrow end, wherein the central longitudinal axis is between the wide end and the narrow end;

an electrical conductor disposed in a passage through a periphery of the frame from the first end to the second end of the frame, wherein the electrical conductor is a flat bar shape, and has a first end located adjacent to a central area of the first end of the frame and a second end located adjacent to a central area of the second end of the frame; and

a ballistic pathway disposed in the frame adjacent to the narrow end of the receptacle and fluidly coupled to an opening in the first end of the frame.

6. The frame of claim 5 , wherein the ballistic pathway is also fluidly coupled to an opening in the second end of the frame.

7. The frame of claim 6 , wherein the opening in the first end of the frame is at the central longitudinal axis and the opening at the second end of the frame is at the central longitudinal axis.

8. The frame of claim 7 , further comprising a first tunnel fluidly coupling the capsule housing to the first opening and a second tunnel fluidly coupling the capsule housing to the second opening.

9. The frame of claim 5 , wherein each of the first end and the second end of the electrical conductor is resilient.

10. The frame of claim 9 , wherein each of the first end and the second end of the electrical conductor is a flat spring.

Assignments (2)

Continuity (2)

References Cited (195)

Cited By (1)

US 12,428,940