دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

the opening in the rig framework that allows pipe to be pulled upright from the catwalk.

n: a method of detecting gas leaks in a line by noting the presence or absence of dead grass or other plants near the line. Natural gas kills plant roots over time.

n: 1. speed. 2. the timed rate of linear motion.

usually the vertical velocity gradient, i.e., the rate of change of velocity of sound traveling through rock with depth. Normally, it refers to seismic velocity at seismic frequencies, i.e., smoothly varying (rather than rapidly varying, as with a sonic l

n: see head.

n: a type of meter that measures the rate of fluid flow through it to determine the quantity of fluid flowing through it.

n: (Ev) a mathematical expression that relates the velocity of the fluid flowing in the meter tube upstream from the orifice to the velocity of the fluid flowing through the orifice.

n: see fluid potential.