دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The rotary type viscosimeter that can change the velocity arbitrarily.

n: see rotameter.

n: the angle by which a compass needle deviates from true north.

vertical annular separation production system.

n: an elastomer seal energized by pressure. While it is circular in shape, the seal has a V -shaped cross section. See also a-ring.

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