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Drill Science Corporation Salt Drilling Utility

Mud Weight to Drill Salt*

*based on rock salt dilatancy theory
Variable Value
Overburden Gradient ppg
TVD feet
Isotropy (purity of salt)
Safety Factor of Mud Weight
Salt Drilling Mud Weight Overburden Stress Mud Hydrostatic Stress Deviatoric Stress % OBG



Salt Theory: Dilatancy is a drilling issue solved only by minimization of a stress dependent boundary and not, as commonly thought of as keeping mud weight a certain percentage of the overburden gradient. Salt creep is a casing integrity issue and yet is not the same as "dilatancy" that is a drilling issue. This tool deals with the drilling issue of salt dilatancy. we have another tool for "Salt Creep".