Drilling Mud Classification
They are classified based on their fluid phase, alkalinity, dispersion and the type of chemicals used.
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Famous quotes containing the words drilling and/or mud:
“Don’t spend your time in drilling soldiers, who may turn out hirelings after all, but give to undrilled peasantry a country to fight for.”
—Henry David Thoreau (1817–1862)
“Out of the mud two strangers came”
—Robert Frost (1874–1963)