دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a cylindrical tube placed around the retrieving neck of a retrievable bridge plug to catch debris or frac balls.

a cylinder at surface to catch ball sealers before the fluid is routed through the choke.

n: a device for regulating the level of fluid in a tank. It consists of a valve connected to a hollow floating ball that, by rising or falling, shuts or opens the valve.

a device that injected balls into the flowing treating fluid downstream of the high pressure pump.

n: a hollow drum that contains material to be ground or pulverised, heavy steel or ceramic balls, and a liquid such as water. The drum is rolled or agitated so that the balls crush or polish the material as they roll about.

mechanical device activated by pumping a ball of a certain size down the tubing in the injected or circulated fluid.

n: The assemblage opening in palm journal of cone bit. The weld line after cone ball is installed and the ball retaining plug is inserted.

n: Installed in the assemblage opening of cone journal. Used to prevent ball dropping out of the track.

n pi: balls made of nylon, hard rubber, or both and used to shut off perforations through which excessive fluid is being lost.

n: Made by nylon or ebonite. Used to block off the opening in the capital string and prevent fluid lossing when fracturing.

small, rubber-covered, hard centered balls that can seal individual perforations during a chemical treatment.

v: 1. to collect a mass of sticky consolidated material, usually drill cuttings, on drill pipe, drill collars, bits, and so forth. A bit with such material attached to it is called a balled-up bit. Balling up is frequently the result of inadequate pump pressure or insufficient drilling fluid. 2. in reference to an anchor, to fail to hold on a soft bottom, pulling out, instead, with a large ball of mud attached.

n: The phenomenon that drill bit or drill tool is surrounded by cutting and viscous mud in drilling progress.