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Drilling Hydraulics Calculators

Use 3 in-depth drilling hydraulics petroleum engineering calculators with formulas, inputs, outputs, units, source references, and engineering guidance.

Drilling hydraulics calculations help estimate pressure losses, ECD, annular velocity, pump output, bit hydraulics, circulation timing, and pump power efficiency.

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Drilling EngineeringDrilling Hydraulics

Velocity of Fluid in Annulus

va=Q2.448(Do2Dp2)v_a = \frac{Q}{2.448(D_o^2-D_p^2)}
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Drilling EngineeringDrilling Hydraulics

Annular Velocity from Pump Output

AV=24.5QDh2Dp2AV = \frac{24.5Q}{D_h^2 - D_p^2}
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Drilling EngineeringDrilling Hydraulics

Equivalent Circulating Density

ECD=MW+ΔPa0.052TVDECD = MW + \frac{\Delta P_a}{0.052TVD}
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