Formation Strength Tests Calculations

Formation Strength Tests Calculations

This article presents the following Formation Strength Tests Calculations:

- Formation Intake Gradient (FIG)

- Effective Mud Gradient (EMG)

- Maximum Allowable Annular Surface Pressure (MAASP)

Formation Intake Gradient (FIG)

FIG (psi/ft) = LOP + (CSD x MG)

                      (CSD - RKB)

Effective Mud Gradient (EMG)

EMG (psi/ft) = LOP + (CSD x MG)

                . . .