دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

abbr: United States Geological Survey.

United States Geololgical Survey, a US government agency.

n: in a two-diaphragm, fourchamber diaphragm displacement meter, the linkage that uses the motion from the crank to slide D-shaped valves over the three ported seats to fill and empty the four measurement chambers alternately.

n: a system or method by which vapors are retained and conserved.

n: (VRU) 1. in petroleum refining, a process unit consisting of a scrubber and a compressor. It is designed to recover petroleum from hydrocarbon vapors and safely to handle toxic gases produced from some wells. 2. in production operations, equipment designed to recover light ends that are released from oil in a stock or other tank.

a device that removes mists and vapors from gas in a tank or enclosure.

n: Pipe rams that can close over a range of pipe sizes.VBRs cannot be used to hang off the drillstring.

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.

a length of tubing with a screen at each end, intended to be installed through tubing and half of the assembly covered with gravel. A common repair for a breached screen. Generally low rate.

the pore pressure at discovery.

abbr: vapor recovery unit.

vapor recovery unit.