دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: test made to verify that each product vaporises within the specified proper temperature range.

n: a vessel used for separating the liquid phase from the gaseous phase formed from a rise in temperature and/or a reduction of pressure on the flowing stream.

n: 1. a form of resistance butt welding used to weld wide, thick members or members with irregular faces together, and tubing to tubing. 2. in pipeline construction, a welding technique in which low voltage is applied to each pipe joint while the ends are in light contact. This contact produces a rapid arcing, called flashing. After the pipe ends have been adequately heated, the current is abruptly increased, and die pipe joints are brought together rapidly and forcefully. The current is then reduced, excess flash material in the pipe is cleared. and the weld is completed.

n: the flexible bridge between the two axises，able to absorb the impact force during the flunctuating of the torque or angular velocity

n: specially manufactured drill pipe that has several pressure- tight joints over the length of the pipe. These joints allow the pipe to bend considerably more than regular drill pipe and are used in directional wells (especially horizontal ones) where the angle of deflection from vertical is relatively abrupt.

n: the casing accessories which is equipped with casing flot collar，folat shoe and insert valve

n: the casing shoe with center-bore dissepiment and ball valve，the effect and structure is similar with the flexiflow fill-up collar

a variety of chert.

n: 1. an element of a level-control assembly designed to operate while partially or completely submerged in a liquid the level of which is controlled by the assembly. The buoyancy of the liquid activates the float and the control valve to which it is linked and modifies the rate of the inflow or the outflow of the vessel to maintain a preset level. 2. a drill pipe float. 3. a long flat-bed semi-trailer. A float collar also prevents backflow of cement during a cementing operation.