Drilling
Drilling fluid additives: lubricants reducing friction coefficient, foaming agents for formation water, wetting agents preventing bit sticking, corrosion inhibitors for drill pipe.
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Oilfield drilling lubricants
decrease in friction coefficient and torque
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Foaming agents
decrease in density of formation water
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Wetting agents
prevention of sticking of a drill bit and a drill pipe; decrease in surface and interfacial tension
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Corrosion inhibitors
blocking of the corrosion pits formation