RESEARCH ON ENERGY LOSS OF DOWNHOLE SUCKED-ROD PUMPING SYSTEM

As the energy loss of sucked-rod pumping system become more seriously and research on it become more deeply,in view of system energy loss research has also been evolved.In this paper,summarized the calculation methods of power loss in downhole sucked-rod pumping system,and analyzed the limitation of these methods such as complex to solve wave equation,and need quantity of field data to regress equation.A new method of power loss calculation on downhole Sucked-Rod Pumping were proposed,also the calculation method of energy loss between rod and liquid and between tube and liquid were established,it more reasonable and more applicable than calculation models of before.