# US 2014/0151046 A1 · Dissolvable material application in perforating

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0151046 A1
- Document ID: US20140151046A1
- Status: Published application
- Kind: A1
- Application number: 14/174,528
- Filed: 2014-02-06
- Published: 2014-06-05
- Earliest claimed: 2009-10-22
- Assignees: Schlumberger Technology Corporation
- Applicants: Schlumberger Technology Corporation
- Inventors: Manuel P. Marya; Wenbo Yang; Lawrence A. Behrmann; Steven W. Henderson; Robert Ference
- Web page: https://patentgrep.com/patent/US20140151046A1

## CPC

- F42B 3/22: Elements for controlling or guiding the detonation wave, e.g. tubes (using inert bodies embedded in shaped or hollow charges F42B1/024)
- E21B 29/02: by explosives or by thermal or chemical means {(freeing stuck objects by explosives E21B31/002)}
- E21B 43/116: Gun or shaped-charge perforators
- E21B 43/117: Shaped-charge perforators (E21B43/118 takes precedence)
- F42B 1/02: Shaped or hollow charges (blasting cartridges with cavities in the charge F42B3/08; oil winning using shaped-charge perforators E21B43/116)
- F42B: EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION (explosive compositions C06B; fuzes F42C; blasting F42D)
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

A shaped charge includes a charge case; a liner; an explosive retained between the charge case and the liner; and a primer core disposed in a hole in the charge case and in contact with the explosive, wherein at least one of the case, the liner, the primer core, and the explosive comprising a material soluble in a selected fluid. A perforation system includes a perforation gun, comprising a gun housing that includes a safety valve or a firing valve, wherein the safety valve or the firing valve comprises a material soluble in a selected fluid.

## Claims

### Claim 1

A system for perforating a formation, comprising:
a perforation gun, comprising a gun housing that includes a safety valve or a firing valve,
wherein the safety valve or the firing valve comprises a material soluble in a selected fluid.

### Claim 2

A method for perforating a formation, comprising:
lowering a perforation gun into a wellbore;
detonating a shaped charge in the perforation gun, wherein the shaped charge comprising:
a charge case,
a liner,
an explosive retained between the charge case and the liner; and
a primer core disposed in a hole in the charge case and in contact with the explosive,
wherein at least one of the case, the liner, the primer core, and the explosive comprising a material soluble in a selected fluid.

### Claim 3 (depends on 2)

The method of claim 2, wherein the case comprises:
the material soluble in the selected fluid and a high density material.

### Claim 4 (depends on 2)

The method of claim 2, wherein the liner comprises:
the material soluble in the selected fluid and a high density material.

### Claim 5 (depends on 2)

The method of claim 2, wherein the explosive comprises:
the material soluble in the selected fluid that comprise nano particles reactive with the explosive upon detonation.

### Claim 6 (depends on 2)

The method of claim 2, wherein the shaped charge further comprises a cap that comprises the material soluble in the selected fluid.

### Claim 7 (depends on 6)

The method of claim 6, wherein the case comprises:
the material soluble in the selected fluid and a high density material.

### Claim 8 (depends on 6)

The method of claim 6, wherein the liner comprises:
the material soluble in the selected fluid and a high density material.

### Claim 9 (depends on 6)

The method of claim 6, wherein the explosive comprises:
the material soluble in the selected fluid that comprises nano particles reactive with the explosive upon detonation.

### Claim 10

A perforation gun, comprising:
a gun housing comprising a safety valve or a firing valve, wherein the safety valve or the firing valve comprises the material soluble in the selected fluid.

### Claim 11

A method for perforating a formation, comprising:
lowering a perforation gun into a wellbore, wherein the perforation gun comprises a gun housing that includes a safety valve or a firing valve, wherein the safety valve or the firing valve comprises the material soluble in the selected fluid;
exposing the perforation gun to the selected fluid;
allowing the safety valve or the firing valve to dissolve;
establishing a pressure communication between the gun housing and the wellbore; and
actuating the perforation gun.

### Claim 12 (depends on 11)

The method of claim 11, wherein the selected fluid is water or an aqueous solution.