دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device used to unscrew rods when the pump is stuck or sanded up and the rods and tubing must be pulled together.

n: a ram device used to close the annular space around the pol- ished rod or sucker rod in a pumping well.

the female coupling on sucker rods.

n: on an engines piston rod, a part on the bottom of the rod that is bolted onto the top part of the rod. To install a piston rod onto the crankshaft, one half of the rod bearing is inserted into the top part of the rod and the other half into the rod cap. The top part of the rod and the rod cap are then placed on the crankshaft and the cap bolted to the top part.

n pi: a device used to pull or to run sucker rods. They have a bail attached to the rod hook.

n: lightning arrester assembly using two rods end-to-end with the gap separating rods determining arcing voltage.

n: a small swivel hook having a fast-operating automatic latch to close the hook opening when weigth is suspended from the hook.

a beam lift term where the pump is filled with gas from pump-off or too fast of an operating speed (rod speed).

n: see sucker rod pump.

a beam lift artificial lift method. Useful for low rate wells (to 1200 BPD) of moderate depth (to 12,000 ft). One of the few lift systems to be able to remove all but a gas gradient of back pressure from the reservoir.

n: the action of the sucker rod string as it comes to rest momentarily at d1e bottom or top of the pump stroke and then begins to move downward (if at the top of the stroke) or upward (if at the bottom of the stroke).