دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the angular motion of a ship or floating offshore drilling rig as its sides move up and down. v: to move from side to side.

n: A kind of cross country vehicle,which be used to transport in marsh,desert and tundra.

sand and proppant falling through a vertical pipe faster than the downflow of fluid during placement of propping. Bridging may occur.

n: a translucent amber-colored to almost black brittle friable resin obtained by chemical means from oleoresin, the dead wood of pine trees, or from tall oil and used in making varnish, paper, and soap. It is also used as a soldering flux.

n: an instrument used to indicate flow rate. It consists of a float in a tapered tube, or a tapered float that moves in a fixed orifice. Row passing around an annular space between the float and its container causes the float to rise until its weight counterbalances the pressure drop across it. rotary n: the machine used to impart rota- tional power to the drill stem while permitting vertical movement of the pipe for rotary drilling. Modern rotary machines have a special component, the rotary or master bushing, to turn the kelly bushing, which permits vertical movement of the kelly while the stem is turning.

n: a pump that moves fluid by positive displacement, using a system of rotating vanes, gears, or lobes. The vaned pump has vanes extending radially from a rotating element mounted in the casing. The geared rotary pump uses oppositely rotating meshing gears or lobes.

n: the principal piece of equipment in the rotary table assembly;a turning device used to impart rotational power to the drill stem while permitting vertical movement of the pipe for rotary drilling. The master bushing fits inside the opening of the rotary table;it turns the kelly bushing, which permits vertical movement of the kelly while the stem is turning. See kelly bushing, master bushing.

n: the main component of the rotating machine that turns the drill string .it has a bevelled gear meachanism to create the rotation,and an opening into which bushings are fitted.

the assembly of gears and connections that spins the kelly.

n: the threaded and shouldered joint used in rotary drilling to join the various components of the drill stem.

n: instrument used for assessing mud properties that records values for both plastic viscosity and yield point.