A load cell for a downhole load measuring tool

Details A load cell for a downhole load measuring tool A load cell for a downhole load measuring tool

E - Fixed Constructions

21

B

E21B 47/01 (2006.01)

Patent

CA 2739222

A load cell for a downhole load measuring tool is described. The load cell comprises a plurality of strain gauges arranged in a balanced array such as a Wheatstone Bridge. The array of strain gauges is provided in fluid which, in use, is at the same pressure as the surrounding downhole fluid. As the balanced array is at the same pressure as the surrounding fluid, there is no requirement to pressure calibrate the load cell. The load cell is preferably arranged to measure shear strain across the load cell.

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