Weight on drill bit measuring apparatus

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

1980-12-19

1982-11-23

Myracle, Jerry W.

Measuring and testing

Borehole or drilling

Downhole test

E21B 4700

Patent

active

043598994

ABSTRACT:
A measuring device is provided for measuring the weight applied to a drilling bit or like device in a borehole 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.

REFERENCES:
patent: 2869363 (1959-01-01), Garrison
patent: 3686942 (1972-08-01), Chatard et al.
patent: 3827294 (1974-08-01), Anderson
patent: 3855853 (1974-12-01), Claycomb
patent: 3855857 (1974-12-01), Claycomb
patent: 3968473 (1976-07-01), Patton et al.
patent: 4120198 (1978-10-01), Tanguy et al.

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