دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: in a kelly bushing, a double set of roller assemblies that are installed on two levels, or planes, within the bushing. Compare single-plane roller assembly. See also kelly bushing, roller assembly.

n: a special reel and power arrangement for single-stranded wireline to make depth measurements in a well. A calibrated wheel and roller assembly is used to measure the footage of wireline as it is lowered into the well.

n: 1. on a kelly bushing, a cylindrical device that fits inside the bushing, whose exterior shape is matched to the kellys shape so that they mate with the kelly when it is inside the kelly bushing. See kelly bushing, roller assembly. 2. part of a roller bearing. See roller bearing.

n: on a kelly bushing, an arrangement of rollers, roller pins, and roller bearings that mate with the kelly as it moves up or down inside the kelly bushing. The roller assembly transfers the turning motion of the kelly bushing to the kelly, and, at the same time, allows the kelly to move up and down freely. See rolle!;roller bearing, roller pin.

n: on a kelly bushing, a shaft that fits inside each roller on the txlshing to affix the rollers to it. See kelly bushing, roller assembly.

n: in a kelly bushing, a single set of roller assemblies that are installed in the bushing at the same level, or plane. Compare double-plane roller assembly. See also kelly bushing, roller assembly.