دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a motor-driven paddle or blade used to mix the liquids and solids in drilling mud.

n: A mechanically driven impeller used to stir the drilling fluid to assist in the suspension of solids, blending of additives, and maintenance of uniform consistency.

a small disc-shaped electrode used in micro-resistivity pads.

n: a thickening-time tester with a stirring appratus to measure the relative thickening time for mud or cement slurries under predetermined temperatures and pressures.

n: A thickening time tester having a stirring apparatus to measure the relative thickening time for drilling fluid or cement slurries under predetermined temperatures and pressures.

a device with rotating paddles, used to check the pumpability and set time of cement slurries.

n: the platform built in taele areas,used to isolate and protect the taele

n: a type of friction clutch that has a metal housing lined with an expandable diaphragm and pads of friction material called friction shoes. The pressure of the expanded diaphragm squeezes the friction shoes against a drum attached to the driving shaft. Friction between the shoes and the drum allows the clutch to engage. See clutch. Compare plate clutch.

n: the turning part used to link the drum and drum shaft or take them off

a focused resistivity log that uses a pad contact with the borehole wall.

the initial part of the fracture fluid that creates the fracture width and controls the initial fluid loss but contains no proppant.

n: in a drum clutch, pads of friction material are squeezed against a drum attached to the driving shaft. Friction between the shoes and the drum allows the clutch to engage.

n: drill pipe that is manufactured with walls that are thicker than those in standard drill pipe. Special extnilength tool joints are attached to the heavier-walled tube. lYPically, 5-inch heavy wall ,.drill pipe weighs50 pounds per foot (75 kilograms per metre);5-inch conventional drill pipe weighs 19.5 pounds per foot (29 kilograms per metre). Also attached to the tube is a centre wear pad that protects the outside diameter of the pipe from abrasion. Heavy wall pipe is often used in the drill stem just above the drill coilars, in the transition zone between the stiffer collars and the more limber drill string, and in place of some drill collars to apply weight on the drill bit in smalliameter and horizontal holes. Sometimes erroneously called heavyweight drill pipe. Compare heavy- weight drill pipe.

n: two bands fined with brake pads;the bands fit over the two rims of the drawworks drum. When the driller engages this brake, the pads press down on the rims to stop the drum from hoisting or from letting out drilling line. The main brake also keeps the drum from rotating (and therefore holds the drill stem stationary) when making up or breaking out drill pipe.

n: the brake that resorts the friction of brake block and brake drum. Mainly formed by lever, brake staple, brack block and balance beam.