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US 2017/0321492 A1Published application
Insulative coating processes for electromagnetic telemetry mandrels
AssigneeHalliburton Energy Services, Inc.
InventorsDaniel Patrick CARTER, Will Edgar HENDRICKS, Chuka Benjamin ONYA
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Abstract
Disclosed is a process for applying an insulative coating to a mandrel 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.
Claims9
A process, comprising:
- applying electrical insulation to an outer radial surface of a mandrel, the electrical insulation comprising a bond coat and an electrical isolation layer;
- applying a first sealant layer to the electrical isolation layer;
- and
- heat treating the mandrel in an oven.
1 more element
Dependencies are inferred from the claim text.