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US5654503A Method and apparatus for improved measurement of drilling conditions 失效
改善钻井条件测量的方法和装置

Method and apparatus for improved measurement of drilling conditions
摘要:
In drilling a well, a condition at the surface which contributes to a downhole condition is identified. A set of observed measurements is collected for the surface and downhole conditions. From this set of observations a predictor equation is derived which expresses the downhole condition as a function of the measured surface condition. After the predictor equation has been developed, it is applied to a measured surface condition to estimate the resulting downhole condition.
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