دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the efficiency with which water displaces oil or gas in a water drive oil or gas field. Water flowing in from the aquifer does not displace the oil or gas uniformly but channels past certain areas due to variations in porosity and permeability.

the percentage of original oil in place displaced from a formation by a flooding fluid.

the amount of the wellbore that is circulated by fluid (describes the hold-up and upswept volume).

n: a type of check valve. swing lease n: a lease from which gas production can be used to eliminate over/under delivery balances under a gas exchange arrangement.

n: an extension of the suction line that pivots vertically inside an oil tank. It allows an operator to withdraw product from varying heights in the tank.

n: a baffle installed at or near the outlet connection of a liquid storage container to prevent the formation of a vortex and air/vapor entrainment in the liquid. Also called vortex eliminator.

n: a chart comprising oceanic wave data collected simultaneously from vessels and computed wave heights for areas lacking reports.

n: an error that, in the course of a number of measurements made under the same conditions and of the same value of a given quantity, either remains constant in absolute value and sign, or varies according to a definite law when the conditions change. Thus, it causes a bias.

n: connection for transforming three-phase power using two transformers;a variation of the open-delta connection.

a plot of dipmeter or drift where the dip angle or displacement is plotted vs. depth as a displacement of the dot. Also called a vector plot.

n: a contract clause that guarantees payment to a seller for gas, even though the particular gas volume is not taken during a specified time period. Some contracts stipulate a time period for the buyer to take later delivery without penalty.