Equivalent Circulating Density (ECD) Calculator

Compute Annular Pressure Loss (ΔP_ann), dynamic ECD (ppg), and Bottomhole Circulating Pressure (BHCP) to prevent kick influx or formation fracture.

Static Mud Weight (MW, ppg):

True Vertical Depth (TVD, ft):

Annular Pressure Loss (ΔP_ann, psi):

Formation Fracture Gradient (ppg eq):

Circulation Rate Q (gpm):

Pore Pressure Gradient (ppg eq):

Equivalent Circulating Density:

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ECD Increase Over Static:

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Static Hydrostatic Head:

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Bottomhole Circulating (BHCP):

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Margin to Formation Breakdown:

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Trip Margin (Overbalance):

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Drilling Window Status:

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