دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a surface unit similar to a pumping unit but having no individual power plant. Usually, several pump jacks are operated by pull rods or cables from one central power source. Commonly, but erroneously, beam pumping units are called pump jacks. Compare beam pumping unit.

the main rocking unit of a rod pumped well. Older uses were in central power units.

pressuring up with supply gas and then opening the well. This works for wells without packers where the annulus can be used as a pressure charge chamber. When a well has a packer, the effect may also work if the liquids are pushed into the formation and t

n: the horizontal steel member of a beam pumping unit that has rocking or reciprocating motion.

n: A steel structural beam of cable drilling or beam pumping unit,which can wave up and down.

n: movement between the mating surfaces of box and pin in a tool joint. v: to move in a rocking motion.