Telemetry system with an insulating connector

US7605716B2 · kind B2 · utility

Assignee

• Baker Hughes Holdings LLC · US

Inventors

• Andreas Peter · Celle, DE
• Volker Krueger · Celle, DE
• Johan Frederik Witte · Delft, NL

Key dates

• Filing date: Jan 31, 2006
• Grant date: Oct 20, 2009
• Expiry date: Apr 12, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V11/002
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

The present invention provides an electromagnetic telemetry apparatus and methods that include an insulating connector that comprises an outer metallic female member that has an inner conical longitudinal surface. In one embodiment, a tubular metallic male member is disposed in the female member, thereby crating an axial conical gap between the male and female members. A conical metallic sleeve having dimensions that substantially correspond to the axial conical gap is disposed in the axial conical gap. The outer tubular surface of the male member is coated with an insulating material, such as a ceramic material. A shoulder at one end of the male member prevents axial movement of the sleeve in one direction and a parallel key between the female member and a stabilizer member prevents rotational movement between the male and female members. The sleeve remains stationary relative to the insulated surface of the male member when the male and female members move longitudinally relative to each other. In an alternative embodiment, a double pin is connected between a lower section and an upper section. Insulation is provided at one end of the double pin. A loading sleeve disposed around …