Downhole pressure and vibration measuring device integrated in a pipe section as a part of a production tubing

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United States of America Patent

PATENT NO 8701480
APP PUB NO 20120024052A1
SERIAL NO

13132072

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Abstract

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The invention relates to a downhole pressure- and vibration-measuring device integrated in a pipe section as part of a production tubing. The sensor housing of the measuring device with sensors has a two-part clamp on the upper part of the sensor housing, from where an electrical multi-conductor cable connection from at least four, preferably six, nipples in a tube is clamped along the production tubing with bushings through equipment installed in the wellhead to sensors with an electronics and control unit above the wellhead. Evenly spaced radially in an 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 on the inside of the external wall of the sensor housing. Strain gauges are connected by glass penetrators of electrical conductors in cable tubes terminated in the tubing hanger to an electronics unit and a control unit. For the measuring of temperatures, a thermometer will be integrated. Pressure-measurement signals also measure vibration in the production tubing.

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Patent Owner(s)

Patent OwnerAddress
TOOL-TECH ASBREKKEVEIEN 23 N-1349 RYKKINN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eriksen, Egil Foldrøyhamn, NO 30 175

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