دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A kind of surface acting agent. It can produce hydrophobic negative ion.

n: The additive which can change exchangeable negative ion which absorbed in the surface of the clay.

differences in rock – segments showing different responses when measured.

n: The character that the formation presents different intension in different direction.

a secondary fault, often in a set, with opposite direction to the primary fault.

n: glass that has been treated with a heating and cooling process that toughens it and reduces its brittleness.

n: the date, usually one year from the effective date of the lease, by which rentals must be paid to maintain the lease in effect in the absence of drilling or production.

n: a gas measurement device that consists of a mutiple-ported Pitot tube installed inside a pipe through which gas is flowing;it is installed perpendicular to the flow of gas. The length of the annubar is equal to the diameter of the pipe in which it is installed. An annubar senses the difference between total flowing pressure and static pressure;gas volume is calculated from this difference. See Pitot tube.

a gas flow rate measurement device using Pitot tubes. Common in pipelines.

adj: pertaining to the annulus. The annulus is sometimes referred to as the annular space.