دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The process in which the bit continually breaks the formation and deepend the wellbore. It is controled by the driller who operates the brake crank and set down the drilling string to keep definite weight on bit.

n: a machine designed specifically for sucker rod pumping. An engine or motor (prime mover) is mounted on the unit to power a rotating crank. The crank moves a horizontal member (walking beam) up and down to produce reciprocating motion. This reciprocating motion operates the pump. Compare pump jack.

n: the percentage of gases that escape past the piston rings from the combustion chamber into the crankcase of an engine.

n: A component of damping mechanism of drilling rig. Brake force of brake crank is passed to brake staple because one end is connected with brake crank and the other end is connected with brake staple.

n: A component of damping mechanism of drilling rig. It is a crank that connects brake staple through links.

n: everything from the dead ends of the brake bands to the brake lever.

n: The heaver mechanism used to enlarge force produced by brake crank to satisfy brake cylinder. Made by brake crank and flex links.

n: see crankshaft.

n: 1. a forged-metal shaft that joins the piston of an engine to the crank-shaft. 2. the metal shaft that is joined to the bull gear and crosshead of a mud pump.

n: the bearing between the rod and the crankshaft. Often called the rod bearing.