دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a section of the lining of a brake band shaped to conform to the curvature of the band and attached to it with countersunk screws. See brake band.

n: The heatproof, abrasion proof, and high friction coefficient blocklike component part. Made by material pressure stencil or plait pressure stenci. Fixed in the inner surface with head screw. The friction produced by contact of brake drum when working.

n: An instrument used to measure the friction coefficient of the mud cake

a dimensionless value expressing the roughness of the pipe.

n: a exponent that evaluate thequality of mud oiliness.

n: see mud friction coefficient.

n: Pump crude oil into the well and make it reach the free piont ,the friction coefficient can be remedied under the soak of the oil ,as a rusult,the unfreezing can be completed