D Exponent Calculator
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D Exponent Calculator is used to find the d-exponent value which is the assumption of drilling parameters to get pressure while drilling into over pressured zones.

D Exponent Calculation

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Formula
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D Exponent Calculator is used to find the d-exponent value which is the assumption of drilling parameters to get pressure while drilling into over pressured zones.

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Formula

d = [ (log ( R / (60 × N) ) / log ( (12 × W) / (1000 × D) ) ] × ( P_n / P_m )^c Where, d = d-exponent value R = Penetration Rate N = Rotary Speed W = Weight on Bit D = Drill Bit Diameter P_n = Mud Weight Equivalent P_m = Mud Weight Used C = Shale Compactibility Coefficient

Use this simple online D Exponent calculator to detect transition from normal pressure to abnormal pressure.