دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the fresh water or salt water used in dynamic kill

n: 1. an instrument or assembly of instruments used to measure torque and other force-related properties of rotating or reciprocating machinery. 2. in sucker rod pumping, a device used to indicate a variation in load on the polished rod as the rod string reciprocates. A continuous record of the result of forces acting along the axis of the polished rod is provided on a dynamometer card, from which an analysis is made of the performance of the well pumping equipment.

a recording of the stresses in a rod string of a beam pumping unit.

n: a continuous record made by the dynamometer of the result of forces acting along the axis of the polished rod in sucker rod pumping.

n: a kind of instrument which measres the deviation angle with pendulum and records the measured result using the action of electrochemistry

n: a bit that does not have a uniformly round cross section;instead, the bit has a protuberance that projects from one side. An eccentric bit drills a hole slightly overgauge to compensate for certain formations, such as shale or salt, that deform and enlarge after being drilled. Eccentric bits can also ream undergauge holes.

n: the pterate bit with big and small flushing port and arranged eccentricly

n: the endopore center and exine center are misalignment because the quality of the fracture thickness around the pipe wall is bad or the eccentric wear causes heterogeneous alternation

n: the value of an AC current or voltage that produces the same heating effect as a direct current of the same amount;equal to 0.707 times the maximum value. Electrical measuring devices read effective values unless otherwise indicated. Also called RMS value.

n: a meter that measures voltage directly, rather than in terms of its relation to current.

n: a kind of drilling method in which the rock is melted and evaporated by the power arc generated between the electrode and rock

n: the process of running an electric log. See electric well log.

n: Electric logs run on a wire line to obtain information concerning the porosity, permeability, density, and/or fluid content of the formations drilled. The drilling-fluid characteristics may need to be altered to obtain good logs.



a method of rock and fluid identification or evaluation that began in 1927. The first log was run by Conrad Schlumberger.