دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the encroachment of reservoir water or gas into the oil column and well because of production. The water or gas tends to rise near the well bore and assume a conical shape.

the movement of a water upwards or gas downwards towards a decrease in pressure caused by producing hydrocarbons in a zone with no vertical permeability boundaries.

n: the proportion by volume of oil swept out of the pore space of a reservoir by the encroachment of another fluid. The displacing fluid may be reservoir water or gas or an injected fluid.

a measurement of how completely a flooding fluid displaces the saturated fluid in a reservoir.

n: see water encroachment.

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: the movement of water into a producing formation as production depletes the formation of oil and gas.