دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: any device that is used to remove deposits (such as scale or paraffin) from tubing, casing, rods, flow lines, or pipelines.

a device that cuts through paraffin, asphaltenes, etc. inside the pipe. Run on wireline.

pH 8.0;Oxygen 6-8 ppm;Sodium 11,000 ppm;potassium 380 ppm;calcium 400 ppm;magnesium 1,300 ppm;Chloride 19,000 ppm;sulfate 2600 ppm;carbonate 142 ppm. Sea water composition may be fresher near rivers and melting ice caps, and more concentrated near

n: a fault that contains material of low permeability, such as gouge.

a fault that effectively seals a compartment.

n: a special class of saltwater muds in which sea water is used as the fluid phase.

n: the surface appearance of oil or gas that results naturally when a reservoir rock becomes exposed to the surface, thus allowing oil or gas to flow out of fissures in the rock.

v: The process of some corpuscle and liquid phase in the drilling fluid filtrating into formation when meet permeable strata.

n: The teeth of the bit can self-sharpening ,because its teeth be processed by special built-up welding .

n: a perforating gun that consists of a metallic strip OIl which encapsulated shaped charges are mounted. After the gun is fired, the strip is retrieved. See gun-perforate.

n: There has a metal ribben belt in the gun perforator,the belt can recovery after be used.

n: A kind of special cement slurry that be used in ultra-deep well,in which be feeded extender firstly,then be feeded accelerating chemicals .

n: a time switch d1at starts motors in sequence after a power out- age or shutdown. It prevents excessive voltage drop, which would occur if several motors were started simultaneously.