HIGH-PRESSURE CENTRIFUGAL AND SUBMERSIBLE ELECTRICAL PUMP FOR THE EXTRACTION OF LIQUIDS FROM A WELL

摘要

The present invention relates to a high-pressure centrifugal and submersible electrical pump which is particularly intended for pumping crude oil from wells having a low output and a high gas factor. A pipe (11) is mounted in the lower section of the pump between a bottom device (14) and a bearing (13), wherein said pipe comprises radially extending through-holes (12) in the vicinity of the bearing (13). Several rows of through-holes (15) are also formed in the pump body below the bottom device (14), wherein said through-holes (15) are located above the through-holes (12) formed in the tube (11).