@mohamedebrahim “subsurface #pump of #sucker #rod “” A subsurface pump, also called a sucker-rod pump, is a positive displacement pump used for artificial lift in #oilwells. It is the most common type of artificial lift system used globally. principle of work The subsurface pump is located downhole, at the bottom of the tubing string, within the oil well. It uses a vertical reciprocating motion from the sucker rods, which are connected to the surface by a prime mover, to lift fluids from the res