Drilling Mud Rheology & Friction Pressure Drop Calculator

Determine Bingham Plastic ($PV, YP$) and Power Law / Herschel-Bulkley parameters ($n, K$), effective viscosity, and laminar/turbulent circulating pressure loss.

Fann 35 Viscometer Dial Readings

θ_600 Dial Reading (600 RPM):

θ_300 Dial Reading (300 RPM):

Pipe / Collar Inside Dia ID (in): 5" 19.5 lb/ft drill pipe ID

Pipe Length L (ft):

Mud Weight MW (ppg):

Circulation Rate Q (gpm):

Rheological Indices & Pressure Loss

Plastic Viscosity (PV)

Internal Pipe Friction ΔP

Flow Index (n)

Consistency (K)

Flow Regime

Rheological Model Assessment

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Drilling Mud Rheology & Friction Pressure Drop Calculator

Fann 35 Viscometer Dial Readings

Rheological Indices & Pressure Loss

Frequently Asked Questions