Development and application of inserted load reduced deep pumping equipment

Abstract:According to the development need of deep pump extraction in oil fields,inserted load reducer is developed. The load reducer is improved in its structure for sucker rod pumping, and inserted multi-stage sealing construction is used to improveing sealing ability.Drainage hole is added to the big pump barrel in order to create the oil drainage passageway between flowout hole and drainage hole, and avoid contaminate in productive process.The load reducer can deepen pump depth and improve oil production by means of reducing jack load of pumping well. It can improve liquid rate of deep reservoir and low permeability producers, reduce cost, and reduce pumping energy consumption. Field application shows that the jack load of pumping well is reduced obviously, realize the goal of energy saving and production enhancing.