دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

water glass, used in sealing permeability channels.

n pi: special class of inhibited chemical muds using as their bases sodium silicate, salt. water. and clay.

n: Usually as oxygen scavenger of drilling fluid,which can decrease the corruption to drill string.

n: It is a kind of good mud thinner and calcium remover.

n: a high-intensity discharge lamp in which the gas is a mixture of sodium and mercury. It starts with the arcing of xenon gas between the main electrodes and gives off a yellow-orange color.

n: A kind of operating program of shut off choke valve,then shut off preventer when overflow appearance.

n: a pattern of drum spooling in which the wore rope travels in a two-step grooving pattern but has flat or level areas for crossing over to act as shock absorbers for the rope and to reduce the rise or hump produced in all multiwrapping of wire rope.

n: It have longer teeth and bigger distance of teeth,which have the function of self-clean,and break rock mainly by scraper

n: a fibre rope.

n: in well-control operations, closing the BOPs with the choke and HCR, or fail-safe, valves open. Compare hard shut-in.