Application and Optimization of Concentric Pipe Jet Pump Drainage Gas Production Technology in the South Area of Sulige Gas Field

Gas Wells in the south area of Sulige Gas field generally produce water and accumulated liquid. The main drainage gas recovery measures such as plunger gas lift and foam drainage have low efficiency in the water-rich area of the gas field, which seriously restricts the scale benefit development of medium-high production water gas reservoirs. Therefore, it is urgent to carry out research on the production recovery measures of severely accumulated liquid Wells and flooded Wells. The concentric pipe jet pump drainage gas production process is introduced. This paper mainly analyzes and compares the drainage and production process design, jet throat combination, application effect, scale inhibitor optimization, etc., and evaluates the application effect of concentric pipe jet pump in middle-high yield water and gas Wells (reservoirs) in Sulignan District.