دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (W/C) water put into an empty string of pipe in a wellbore to prevent the pipe from being crushed by pressure in the annulus.

n: A volume of water placed in a tubing string prior to conducting a drillstem test or opening a well to flow. The water cushion is designed to reduce and control the pressure drawdown applied to the reservoir when the downhole valve or tester valve is opene

a level of water in a string to be used for flowback to generate an initial damping back pressure.