DEEP PUMPING TECHNOLOGY RESEARCH AND APPLICATION BY COMBINATION OF HYDRAULIC JET PUMP AND ELECTRIC SUBMERSIBLE PUMP IN LOW PERMEABILITY RESERVOIRS

The deep well artificial lift technology has not been ideal for lower productivity wells. The paper presents a better investigation result by applying the combination of hydraulic jet pump and electric submersible pump in production. The new artificial lift system and parameter optimization method is introduced. Field test shows the system is more reliable and efficient. It has strong ability to meet the deep well pumping in low permeability reservoirs.