FIELD TESTING EFFECT AND EVALUATION OF LONG PLUNGER SAND CONTROL PUMP

The long plunger sand control pump application in sand production oil well possess unique structure which combining the long plunger, short pump barrel and setting sand in annular together. It has three more function include preventing sand sticking, preventing sand bury and preventing sand wear, which can prolong oil well production period effectively. The using life and the production period of the pump are two times longer than convention pump after has been used in 700 wells. The pump has made a hatch of long times stopping well began to produce. So, new oil producing equipment and technology is provided for the sand production well.