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    • 9. 发明授权
    • Method for monitoring potassium chloride concentration in drilling fluids
    • 监测钻井液中氯化钾浓度的方法
    • US4546252A
    • 1985-10-08
    • US634090
    • 1984-07-25
    • Eric P. Dion
    • Eric P. Dion
    • E21B49/00G01V5/04G01V5/06G01V5/00
    • E21B49/005G01V5/04G01V5/06
    • 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.
    • 在钻井操作期间监测钻井液的氯化钾浓度,以便随时间确定这种浓度的任何耗尽。 最初,通过在具有连续增加的氯化钾浓度的自屏蔽钻井液样品上进行伽马辐射测量来校准所使用的伽马辐射测量装置。 根据测量的各种钻井液样品的氯化钾浓度与各自的γ辐射计数率之间的关系得出校准常数。 然后将该校准常数与在钻井操作期间钻取的钻井液的伽马辐射计数值一起使用,以识别钻井液氯化钾浓度。