دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the maximum flow rate that a well could theoretically deliver with zero pressure at the face of the reservoir.

the theoretical maximum flow that a well could deliver with a zero backpressure at the middle of the perforations.

temperature measurement starting at absolute zero (total absence of heat).

n: a hypothetical temperature at which there is a total absence of heal Since heat is a result of energy caused by molecular motion, there is no motion of molecules with respect to each other at absolute zero.

zero point on the absolute temperature scale;equal to -273.16 degrees C, or 0 degrees K (Kelvin),or -459.69 degrees F, or 0 degrees R (Rankine).

n: (A C) current in which the charge-flow periodically reverses and whose average value is zero. Compare direct current.

n: The current whose intensity and direction alter periodically with time.

n: the angle formed when two immiscible fluids meet a solid surface. For example, in a reservoir where water contacts a grain of sand or rock, it conforms to the shape of the solid and its angle of contact is at or near zero. Because of surface tension, any oil in the area does not conform to the shape of the water and grain;instead, the oil surrounds the wet grain and produces angles at the point of contact between the oil and the water.

the angle of intersection of two fluids on a given surface. Describes wetting and non-wetting behaviors.

the zero depth datum for well logging.

n: See deviated hole.

a well with an inclination other than zero degrees from vertical. In practice, deviated wells are usually more than about 10o from vertical.

n: a dilatant. or inverted plastic, fluid is usually made up of a high concentration of well-dispersed solids that exhibits a nonlinear consistency curve passing through the origin. The apparent viscosity increases instantaneously with increasing rate of shear. The yield point, as determined by conventional calculations from the direct-indicating viscometer readings, is negative;however, the true yield point is zero.

n: This fluid is one of non-Newtonian flow patterns whose unique feature
is that once the fluid is subjected to force,it will start flowing without any gel strength.




a well dispersed, high solids content liquid that has very high apparent viscosity with any applied shear.

n: the rate that causes the sum of the discounted outflows and inflows of funds to equal the net cash outlay in year zero of a project. It is used in evaluating exploration investments.