STEP BY STEP HOW TO RUN DRILLING SURGING / SWABBING PRESSURE CALCULATION
What Is Definition Of The Surge / Swab Pressure In Drilling & Who To Calculate

Difference Between Surging And Swabbing In Drilling

Drilling Surge /Swab Pressure Definition
Surge pressures describe pressure changes in the annulus resulting from pipe movement. As the drill pipe is pulled from the well, mud flows down the annulus to fill the void left by the pipe. As the drill pipe is lowered into the well, mud is forced out of the flow line.
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