دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the reduction in a wells bottomhole pressure. See drawdown.

water, ranging from fresh to salty, produced with the hydrocarbons as a result of pressure drawdown and flow through the formation.

n: the upward encroachment of water into a well caused by pressure drawdown from production.

movement of water upward into oil strata in response to production of oil and lower reservoir pressures. May be localized in areas of high vertical permeability.

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.