G - Physics – 01 – V
Patent
G - Physics
01
V
150/18
G01V 5/00 (2006.01) E21B 49/00 (2006.01) G01V 5/04 (2006.01) G01V 5/06 (2006.01)
Patent
CA 1212604
METHOD FOR MONITORING POTASSIUM CHLORIDE CONCENTRATION IN DRILLING FLUIDS Abstract of the Invention 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 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.
485879
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
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