Insulated wire
US-2015357084-A1 · Dec 10, 2015 · US
Downhole well communications cable
US8960271B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8960271-B2 |
| Application number | US-201113193672-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 29, 2011 |
| Priority date | Aug 6, 2010 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
Official abstract text for this publication.
Communications cable is provided for use in downhole wells wherein the cable will be exposed to a temperature of at least 280° C., the cable including as a component thereof a composition comprising melt-fabricable tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer and melt flowable polytetrafluoroethylene, said polytetrafluoroethylene by itself having no tensile property and being present in said composition in an amount effective to enable the component to withstand this temperature, with the high temperature exposure of the cable component being effective to thermally transform the composition in the solid state, thereby obtaining epitaxial co-crystallization.
First claim
Opening claim text (preview).
The invention claimed is: 1. In a downhole well wherein the temperature is 290° C. or greater, a communications cable positioned within said well, at least a portion of said cable thereby being exposed to said temperature, said cable including as a component thereof a composition consisting essentially of 65 to 85 wt % melt-fabricable tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, said perfluoroalkyl containing 1 to 5 carbon atoms, and 15 to 35 wt % melt flowable polyt…
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Frequently asked questions
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- What does patent US8960271B2 cover?
- Communications cable is provided for use in downhole wells wherein the cable will be exposed to a temperature of at least 280° C., the cable including as a component thereof a composition comprising melt-fabricable tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer and melt flowable polytetrafluoroethylene, said polytetrafluoroethylene by itself having no tensile property and being pres…
- Who is the assignee on this patent?
- Lahijani Jacob, Du Pont
- What technology area does this patent fall under?
- Primary CPC classification H01B7/292. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 24 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).