PetroCalcHubFree
Browse
Drilling EngineeringWell Control

Pore Pressure Gradient - Rehm and McClendon Calculator

gp=0.398log⁡10(dcn−dco)+0.86g_p=0.398\log_{10}(d_{cn}-d_{co})+0.86

Enter the required inputs, confirm the units, and run the calculator to solve g_p. Review the formula source and assumptions before using the result in engineering work.

Tabular solver

Inputs

Defaults provide a quick field-unit example for the equation.

2 variables

Calculation runs locally with the shared TypeScript engine.

Formula reference

Pore Pressure Gradient - Rehm and McClendon calculates pore pressure gradient for well control workflows in drilling engineering.

View formula, units, and source

Assumptions

  • Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
  • The declared units match the field-unit constants used in the formula.
  • The cited formula applies to the selected petroleum engineering workflow.

Common mistakes

  • Mixing unit systems without converting the inputs.
  • Using default example values as field recommendations.
  • Applying the formula outside the source assumptions.