Corrodible downhole article and method of removing the article from downhole environment
US-9139928-B2 · Sep 22, 2015 · US
Dissolvable material application in perforating
US9671201B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9671201-B2 |
| Application number | US-201414174528-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 6, 2014 |
| Priority date | Oct 22, 2009 |
| Publication date | Jun 6, 2017 |
| Grant date | Jun 6, 2017 |
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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.
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.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for perforating a formation, comprising: configuring a perforating gun to fire in response to a pressure change within the perforating gun; lowering the perforating gun into a wellbore, the perforating gun comprising a carrier housing shaped charges having caps, the caps being formed from a material soluble in a selected fluid and configured to maintain pressurized gases within the perforating gun; introducing the selected fluid downhole and allowing sufficient time for the caps to dissolve; maintaining the position of the perforating gun in the wellbore to allow the perforating gun to fire in response to the pressure change resulting from the dissolving of the caps. 2. The method of claim 1 , wherein the material soluble in the selected fluid is a polyolefin polymer. 3. The method of claim 1 , wherein the material soluble in the selected fluid is a paraffin wax. 4. The method of claim 1 , wherein the material soluble in the selected fluid is a polyalkylene oxide. 5. The method of claim 1 , wherein the-material soluble in the selected fluid is a polylactide polymer. 6. The method of claim 1 , wherein the material soluble in the selected fluid is polycaprolactam. 7. The method of claim 1 , wherein the material soluble in the selected fluid is polyglycolic acid. 8. The method of claim 1 , wherein the material soluble in the selected fluid is a polyalkylene glycol.
Assignees
Inventors
Classifications
Shaped or hollow charges (blasting cartridges with cavities in the charge F42B3/08; oil winning using shaped-charge perforators E21B43/116) · CPC title
- E21B43/117Primary
Shaped-charge perforators (E21B43/118 takes precedence) · CPC title
- F42B3/22Primary
Elements for controlling or guiding the detonation wave, e.g. tubes (using inert bodies embedded in shaped or hollow charges F42B1/024) · CPC title
by explosives or by thermal or chemical means {(freeing stuck objects by explosives E21B31/002)} · CPC title
Gun or shaped-charge perforators · CPC title
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Frequently asked questions
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- What does patent US9671201B2 cover?
- 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…
- Who is the assignee on this patent?
- Schlumberger Technology Corp
- What technology area does this patent fall under?
- Primary CPC classification E21B43/117. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Jun 06 2017 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).