Apparatus for pneumatically monitoring conditions of a well...

Details Apparatus for pneumatically monitoring conditions of a well... Apparatus for pneumatically monitoring conditions of a well...

E - Fixed Constructions

21

B

121/63

E21B 43/12 (2006.01) E21B 21/08 (2006.01)

Patent

CA 1051297

APPARATUS FOR PNEUMATICALLY MONITORING CONDITIONS OF A WELL CIRCULATING SYSTEM ABSTRACT Pneumatic apparatus for monitoring conditions of the drilling fluid circulating system of a well being drilled. A pneumatic signal having unequal duration times and repre- sentative of the rate of movement of the circulating pump is transmitted through a repeater valve and converted by a frequency divider into a pair of pneumatic signals having equal duration times. These signals actuate a series of metering systems which generate rate pressures representa- tive of conditions of the circulating system. These rate pressures are displayed to the operator through independently calibrated and adjusted gauges.

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