Insulative coating processes for electromagnetic telemetry mandrels
US9739099B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Sep 30, 2013 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | May 11, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D7/584
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for applying an insulative coating to a mandrel can be used in an electromagnetic telemetry antenna assembly. One process includes applying a bond coat to at least a portion of an outer radial surface of a mandrel; applying an electrical isolation layer to the bond coat; applying a first sealant layer to the electrical isolation layer; and heat treating the mandrel in an oven.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.