Weight on drill bit measuring apparatus

Details Weight on drill bit measuring apparatus Weight on drill bit measuring apparatus

E - Fixed Constructions

21

B

255/1

E21B 47/12 (2006.01) E21B 47/00 (2006.01) G01L 5/00 (2006.01)

Patent

CA 1165752

WEIGHT ON DRILL BIT MEASURING APPARATUS Abstract of the Disclosure A measuring device is provided for measuring the weight applied to a drilling bit or like device in a bore- hole while the drilling is taking place. The measuring apparatus has a tubular housing adapted to be coupled into a drill string preferably immediately above the drill bit. A transducer is mounted in the tubular housing and measures pressure in a captive fluid chamber within the housing which can be correlated to weight on the measuring apparatus and in turn on the drill bit.

391020

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