دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the ability of a measuring instrument to indicate values closely approximating the true value of the quantity measured.

the closeness of agreement between the measure value and the exact value.

n: see meter factor.

n: a number used to correct a meters inaccuracy. The factor is derived by dividing the actual volume of liquid passed through a meter during proving by the volume registered by the meter. For subsequent metering operations, the actual throughput, or gross measured volume, is determined by multiplying the indicated volume registered on the meter by the meter factor.

a correction factor applied to a meter to increase measurement accuracy in a range.

n: a device used to determine the accuracy of a meter. Two popular types are pipe provers and open tank provers. A pipe prover has a calibrated pipe that contains a known volume. A sphere displaces oil or liquid product through the pipe while the meter being proved registers the amount of oil or liquid displaced. The meters reading is then compared to the known volume in the pipe. An open tank prover is a calibrated tank that contains a known volume. Oil or liquid product is put into the tank while the meter being proved registers the amount. The meters reading is then compared to the known volume in the tank.

n: a directional survey that provides a record of drift angle and direction at various depths in the hole. See directional survey.

n: A technique for determining the deviation of a wellbore. The multishot tool provides more accuracy than the single-shot tool and is usually used in highly deviated wells.

n: see accuracy curve of a volume meter.

n: 1. an accurately calibrated, usually U-shaped, pipe used to check, or prove, the accuracy of a meter on a LACT unit or other oil measuring installation. 2. a type of continuous-flow volumetric prover comprising a length of pipe from which a known volume is displaced by a displacer to or from a meter being proved at normal operating conditions.

a cup and bar with a sliding weight, similar to a Mud Balance, but also having a screw on top with a slide valve through which a small amount of fluid could be added under pressure, collapsing the air dispersed in the fluid. Better accuracy than an unpres

v: to determine the accuracy of a petroleum measurement meter.

n: a device used to determine the accuracy of a petroleum measurement meter.

n: appratus that checks the precision of petrolum gauge.