MEASURING CRITICAL SHEAR STRESS FOR MUD FILTERCAKE REMOVAL.

摘要

Methods include: forming a first mud filtercake with a first mud; and determining a relationship between an impinging jet of a fluid at varying pressures against a surface of the first mud filtercake to a first erosion characteristic of the first mud filtercake. In various embodiments, the methods can additionally include: using the first erosion characteristic to design an operation to remove a second mud filtercake formed or to be formed in a wellbore with a second mud.