By Reduce Rod Load Application Load Shedding To Improve Efficiency In The Low Permeability Oilfield

It is ascribed to the Lower， more than ever， permeability in Changqing Oilfield，individual well productivity is generally short， obviously， Multi-well， low-yieldingobjective reality makes the low-cost strategy to become the development lifeline of ChangqingOilfield. Therefore， reducing the pumping wells investment and operating costs are keys tosupport low-cost strategy. This paper focuses on how to reduce the suspension point load aswell as the unit，Establishes a new rod string design method， designs a innovativeφ25mmsolid plunger pump that first developed and applied domestically， develops the type7andtype9to improve the pumping unit type spectrum， Proposes a new method to predict thesuspension point load accurately for directional wells and innovates the evaluation method toground equipment efficiency of pumping wells. Finally， the formation of a " lower the roddiameter， lower the pump diameter， lower the unit type， improve system efficiency"integrated load shedding， to mention efficient design methods， the developed core tools andequipment have achieved large-scale applications，overall，cost efficiency and energy savingeffect is remarkable.