دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

hydraulic workover, usually working under pressure. Some HWO units are set up with pipe handling capacity as are snubbing units.

hydraulic workover unit.

n: a tool that under certain hydraulic pressure become curly, it is used to fish drilling tool at the out of round oversized hole.

n: a fluid connection between a prime mover and the machine it drives;it uses the action of liquid moving against blades to drive the machine. Also called fluid coupling.

n: certain hydraulic transmision assembly that composed of two impeller of turbine and pump.

n: a governor on an engine that operates by means of oil inside its housing. Unlike a mechanical governor, which is mechanically linked to the engines speed control, a hydraulic governor operates the speed control with oil pressure inside the governor. See governor. Compare mechanical governor.

n: the energy loss that the fluid overcome resistance on the way or on the spot when the fluid flows in the pump.

n: the hydraulic loss or the drop of pressure that overcome the friction when the fluid flow through the drilling circulation system.

a snubbing job in which the well is workover without killing the well with fluid. Usually accomplished by multiple barriers that seal on the tubulars.

n: a series of hydraulic rams to restrain and pull tubing under well pressure, temporarily attached to the wellhead for workover

n: a series of hydraulic rams to restrain and pull tubing under well pressure, temporarily attached to the wellhead for workover.