Downhole tool explosive with thermally conductive material

Patent metadata

Field	Value
Publication number	US-11002117-B2
Application number	US-201816221828-A
Country	US
Kind code	B2
Filing date	Dec 17, 2018
Priority date	Dec 15, 2015
Publication date	May 11, 2021
Grant date	May 11, 2021

Abstract

A method can include forming a mixture of an explosive and a thermally conductive material; disposing at least a portion of the mixture in a chamber of a capsule; and at least partially sealing the chamber.

First claim

What is claimed is:

1. A method comprising:
forming a mixture of an explosive and a thermally conductive material;
disposing at least a portion of the mixture in a chamber of a capsule;
at least partially sealing the chamber; and
sensing thermal effusivity of the mixture and controlling the forming based at least in part on the sensing.

2. The method of claim 1 wherein the capsule comprises a shell and wherein the at least partially sealing the chamber comprises fitting a liner to the shell.

3. The method of claim 1 wherein the thermally conductive material comprises one or more layers of graphene having at least one polymer bonded thereto.

4. The method of claim 1 wherein the thermally conductive material is coated on crystals of the explosive.

5. The method of claim 1 wherein the thermally conductive material comprises a thermal conductivity in excess of 100 W m 1 K 1 .

6. The method of claim 1 wherein the thermally conductive material comprises a thermal conductivity in excess of 1000 W m 1 K 1 .

7. The method of claim 1 wherein the mixture comprises at least approximately 0.1 percent of the thermally conductive material by mass.

8. The method of claim 1 wherein the chamber comprises a booster chamber that comprises a volume of at least approximately 0.5 cm 3 .

9. The method of claim 1 wherein the chamber comprises a volume of at least approximately 2 cm 3 .

10. The method of claim 1 comprising disposing the capsule in a perforating gun and disposing the perforating gun in a bore in a geologic environment.

11. The method of claim 9 comprising heating the capsule to a temperature greater than approximately 120 degrees C.

Assignees

• Schlumberger Technology Corp

Inventors

• Skyler David

Classifications

• F42B33/0285

  Measuring explosive-charge levels in containers or cartridge cases; Methods or devices for controlling the quantity of material fed or filled (F42B33/004 takes precedence; controlling the quantity of material fed in packaging B65B3/26) · CPC title

• F42B33/0207

  Processes for loading or filling propulsive or explosive charges in containers · CPC title

• C06C7/00

  Non-electric detonators; Blasting caps; Primers · CPC title

• E21B43/117 Primary

  Shaped-charge perforators (E21B43/118 takes precedence) · CPC title

• F42B1/028

  characterised by the form of the liner · CPC title