Design and application of submersible electric pump group for small displacement and high lift

a set of submersible electric pump system for small displacement and high lift was designed and was oriented to the needs of oil production technique in deep wells and inclined wells.The structure design of pump system was technologically improved by analyzing the state of electric pump system in deviation well section,and then the components located in key parts were optimized and manufactured by ourselves.With all of these,the adaptation of pump system to running in slope state was strengthened greatly when comes through deviation well sections.Aseries of technical requirements for displacement,lift,current and voltage of this pump system were tested and verified indoor before running-in down hole.The results of on-site application in four wells have shown pretty good liquid-lift ability and a longer maintenance period for submersible pump with small displacement and high lift,which satisfy the requirements of oil production technology for wells like deep wells,inclined wells and low production wells.