Patent ID: 8701480

Claim:
A downhole pressure and vibration measuring device integrated in a pipe section as part of a production tubing, the measuring device being constituted by a sensor housing with sensors and a two-part clamp on the upper part of the sensor housing, from where an electrical multi-conductor cable connection from at least four, nipples in cable tubes is clamped along the production tubing with bushings through equipment installed in the wellhead to an electronics/amplifier unit and a control unit above the wellhead, wherein the sensor housing forms an annular space around the pipe section and is filled with an inert gas; that evenly spaced radially in the annular space are a first set of strain gauges attached to the outside wall of the production tubing and a second set of strain gauges attached to the inside of the external wall of the sensor housing; that the strain gauges are connected by glass penetrators to electrical conductors in cable tubes, which are terminated in the tubing hanger of the well equipment, to an electronics unit and a control unit.