Long Stroke Pumping Unit. Final Technical Report

摘要

The Long Stroke Pumping unit (LSP) is designed to replace the current beam pumping unit being used widely in the oil fields. The LSP unit uses fixed top and bottom reservoirs and a moving shuttle dump bucket. a continuously running centrifugal pump transfers hydraulic fluids from the bottom reservior to the top. The static head between the two reservoirs provides the necessary potential energy for sucker rod force and stroke. Details of the LSP unit and its operation are provided, as well as test procedures. (ERA citation 11:016919)