An experimental study was conducted about recovery efficiency on Brine flooding and Alkaline, Surfactant, Polyacrylamide flooding (ASP) in modeling Daqing OilField stratum.
The brine content of crude oils produced in Zhyangxi oilField, Shengli, has increased up to 60-70% and the scale inhibitor used in oil-gathering stations, HEDP, has lost its most functions.