Method for monitoring potassium chloride concentration in drilli

Details Method for monitoring potassium chloride concentration in drilli Method for monitoring potassium chloride concentration in drilli

1984-07-25

1985-10-08

Smith, Alfred E.

Radiant energy

Calibration or standardization methods

250256, G01V 500

Patent

active

045462526

ABSTRACT:
The potassium chloride concentration of a drilling fluid is monitored during well drilling operations to identify any depletion in such concentration with time. Initially, the gamma radiation measuring apparatus utilized is calibrated by making gamma radiation measurements on self-shielded drilling fluid samples having successively increasing potassium chloride concentrations. A calibration constant is derived from the measured relationship between the potassium chloride concentrations of the various drilling fluid samples and their respective gamma radiation count rates. This calibration constant is then used along with the measured gamma radiation count rates from drilling fluid taken during well drilling operations to identify drilling fluid potassium chloride concentration.

REFERENCES:
patent: 2686881 (1954-08-01), Herzog et al.
patent: 4378498 (1983-03-01), Givens
patent: 4388266 (1983-06-01), Givens
patent: 4493998 (1985-01-01), Smith, Jr. et al.

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