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JET PULSING MAY ALLOW BETTER HOLE CLEANING

08.01.1990 / Energyboardroom

M. S. Bizanti Louisiana Tech University Ruston, La. Jet pulsing, intermittent nozzle flow, by sweeping drill particles across the bottom can improve cutting removal. During each rotation cycle, particles will be swept by the high peak velocities and stabilized during normal velocities. For intermittent nozzle flow, the smaller areas open to flow yield higher impact pressure, higher nozzle velocity, and high bit-hydraulic horsepower.

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