دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: schlumberger wireline tool run inside drillpipe when stuck.when on depth, anchors are deployed and the drillstring worked in tension and torsion. Tool allows an estimate of stuck depth prior to attampting an explosive backoff.

n: when drilling , the rotary table pass the energy to the pipeline and drive the bit to crush the rock, the volume is subjected to the force of torque.

n: twisting deformation of a solid body about an axis in which lines that were initially parallel to the axis become helices. Torsion is produced when part of the pipe turns or twists in one direction while the other part remains stationary or twists in the other direction.

a slickline tester used to spot slickline fatigue and embrittlement before the run.

n: the amount of twisting force that a pipe can withstand before twisting off.

n: 1. a device, positioned in the drill stem between the bit and the drill collars, that absorbs impact loads and vibration from the up-and-down motion of the drill stem. Vibration dampeners are designed to transmit torque while absorbing reciprocative loads that decrease the efficiency of the drill bit. Also called a Shock Sub. 2. a device affixed to an engine crankshaft to minimize stresses that result from torsional vibration of the crankshaft. vibration error n: the maximum change in operating output, at any measured value within a specific range, when vibration levels of specified amplitude and range or frequencies are applied to the transducer along specified axes.

n: The tool can decrease the vertical and rotary shock vibration coming from bottomhole .