Heat exchanger fin with crack arrestor
US-2015053380-A1 · Feb 26, 2015 · US
Perforation crack designator
US10138718B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10138718-B2 |
| Application number | US-201415317886-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 9, 2014 |
| Priority date | Jul 9, 2014 |
| Publication date | Nov 27, 2018 |
| Grant date | Nov 27, 2018 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
At least one crack designator for a perforating gun, wherein the gun includes a longitudinal direction, a lateral direction, and at least one scallop, wherein each crack designator is capable of redirecting crack growth from the lateral direction to the longitudinal direction of the gun. The designator may be located in one of the scallops, extend from an expected exit hole in the gun to an edge of one of the scallops, and be capable of redirecting crack growth from a lateral direction to a longitudinal direction of the gun. In preferred embodiments, the designator in each scallop is arranged in a spider pattern or concentric circles. The designator is preferably formed by machining, etching, or laser ablation. The designator may have a lower fracture toughness or lesser stiffness than surrounding material of the gun.
First claim
Opening claim text (preview).
What is claimed is: 1. At least one crack designator for a perforating gun, wherein the gun comprises a longitudinal direction, a lateral direction, and at least one scallop, wherein the at least one crack designator has a lesser stiffness than surrounding material of the gun and wherein the at least one crack designator defines a crack track that encourages crack growth in the gun in the longitudinal direction, the crack track redirecting crack growth in the gun from the lateral direction to the longitudinal direction of the gun. 2. The designator of claim 1 wherein the at least one designator is located in one of the scallops. 3. The designator of claim 2 wherein the at least one designator extends from an expected exit hole in the gun to an edge of one of the scallops. 4. The designator of claim 1 wherein the at least one designator in each scallop is arranged in a spider pattern. 5. The designator of claim 1 wherein the at least one designator in each scallop is arranged in concentric circles. 6. The designator of claim 1 wherein the at least one designator is formed by machining, etching, or laser ablation of the gun. 7. The designator of claim 1 wherein the at least one crack designator has a lower fracture toughness than surrounding material of the gun. 8. A perforating gun having a longitudinal direction and a lateral direction, at least one charge; at least one scallop; a detonator connected to each charge; and at least one crack designator, wherein the at least one crack designator has a lesser stiffness than surrounding material of the gun and wherein the at least one crack designator defines a crack track that encourages crack growth in the gun in the longitudinal direction, the crack track redirecting crack growth from the lateral direction to the longitudinal direction of the gun. 9. The gun of claim 8 wherein the at least one designator is located in one of the scallops. 10. The gun of claim 9 wherein the at least one designator extends from an expected exit hole in the gun to an edge of one of the scallops. 11. The gun of claim 9 wherein the at least one designator in each scallop is arranged in a spider pattern. 12. The designator of claim 9 wherein the at least one designator in each scallop is arranged in concentric circles. 13. A method of designating cracks in a perforating gun, wherein the gun comprises a longitudinal direction, a lateral direction, and at least one scallop, which comprises the step of: installing at least one crack designator in the gun wherein the at least one crack designator has a lesser stiffness than surrounding material of the gun and wherein the at least one crack designator defines a crack track that encourages crack growth in the gun in the longitudinal direction, the crack track redirecting crack growth in the gun from the lateral direction to the longitudinal direction of the gun. 14. The method of claim 13 wherein the at least one designator is located in one of the scallops. 15. The method of claim 13 wherein the at least one designator extends from an expected exit hole in the gun to an edge of one of the scallops.
Assignees
Inventors
Classifications
- E21B43/116Primary
Gun or shaped-charge perforators · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10138718B2 cover?
- At least one crack designator for a perforating gun, wherein the gun includes a longitudinal direction, a lateral direction, and at least one scallop, wherein each crack designator is capable of redirecting crack growth from the lateral direction to the longitudinal direction of the gun. The designator may be located in one of the scallops, extend from an expected exit hole in the gun to an edg…
- Who is the assignee on this patent?
- Halliburton Energy Services Inc
- What technology area does this patent fall under?
- Primary CPC classification E21B43/116. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Nov 27 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).