دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: in tank sampling, a sample obtained with a thief to determine the amount of material at the bottom of the tank that cannot be sold.

n: Adding water in the water-base drilling fluid , which can decrease the density and thickness of fluid.

mud with water as the external phase. May contain clays, polymers, or even an internal oil phase.

n: a reduction in the permeability of a formation caused by the invasion of water into the pores.

n: A condition caused by an increase in water saturation in the near-wellbore area. Water block typically forms during the drilling phase of a well, when the near-wellbore area is exposed to a relatively high volume of filtrate from the drilling fluid. The i

a relative permeability problem usually occurring in a gas zone. Highest potential formations for water blocks are low pressure gas sands (<0.25 psi/ft pore pressure),with small pore throats (<10 microns),lower permeability (<100 md),and when using wat

n: water accumulated at (or sometimes added to) the bottom of the oil in a storage tank.

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.