دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a gas lift system in which the gas that is injected and subsequently produced is recompressed and reinjected t, into the well, effecting a continuous, closed ,. system that does not require the introduction of additional gas from an extraneous source for operation, except that needed to make up losses in the system.

n: on a drilling rigs hook, a device that, when unlocked, allows crew members to rotate the hook to make the elevators face in any desired direction. When in the desired position, crew members can lock it there.

n: The speed of rotary.

n: instrument used for assessing mud properties that records values for both plastic viscosity and yield point.

n: 1. a device with vanelike blades attached to a shaft. The device turns or rotates when the vanes are struck by a fluid directed there by a stator. 2. the rotating part of an induction-type alternating current electric motor.

n: It is revolving and its blading convert the hydrodynamic to mechanical energy .

the rotating shaft in a PDM motor.

n: see rotary helper.

n: an employee of a drilling contractor who works on the drill floor under the direction of the driller.

a member of the rig crew.

the interior surface metal roughness of a pipe. Rough pipes have higher friction.

n: the procedure of pulling out and subsequently running back into the hole a string of drill pipe or tubing. Also called tripping.

n: the process by which the entire drill string is pulledout of the holeand run backin again (ususlly to change the bit or BHA(q.v.)).

Pulling a string of pipe from a well and returning to bottom.

n: The full time from trip out to trip in for changing bit or logging .