The reliable electrical continuity of both conductor and armour is maintained by low resistance rotating contacts making it ideal for high speed production logging telemetry. A sliding sleeve relieves internal pressure changes caused by well pressure or expansion of the internal oil due to rising temperature.
The wireline swivel top and bottom sub-assemblies are linked by a shaft that is free to rotate on a set of bearings to accommodate both vertical and lateral forces. The unit is pressure balanced and oil-filled to prevent any increase in seal friction at high ambient pressures and temperatures.
GE offers a range of wireline swivels to accommodate the most demanding downhole scenarios.