Researches About Polymer Flooding Recovery Methods To Improve Sewage Diluted Polymer Solution

With the continuous expansion of production scale polymer flooding,relying solely onwater and dilute polymer solution preparation,not only waste a lot of water resources,willlead to a large number of mined sewage efflux,polluted environment. At present,some oilfieldwater preparation, the depth of treatment of sewage diluted polymer solution,but thisapproach with injection depth caused by lack of the sewage, therefore,it is necessary to adoptpolymer flooding sewage diluted polymer solution.Due to the polymer flooding sewage andsewage treatment there is a big difference in the water,leading to low polymer floodingsewage diluted by the polymer solution viscosity, flooding poor results.In addition, the use ofadvanced treatment process is difficult to polymer flooding sewage wastewater treatment asqualified "deep water",this paper carried out the sewage diluted polymer solution of polymerflooding enhanced oil recovery methods study aims to gather resources and effective use ofsewage flooding in polymer flooding provide a theoretical basis and technical measures.This article is taken from the field of polymer flooding oilfield wastewater and sewagetreatment depth analysis of the water quality testing results show that the water quality in thetwo quite different factors for the oil content, suspended solids and COD values;throughdilution of the polymer flooding sewage polymer solution viscosity experiments on polymerflooding sewage derived bacteria,salinity and reducing substances is a major factor leading topolymer flooding sewage diluted polymer solution viscosity decreased;effluent quality afterexposure to oxygen and sterilization process and dilute polymer solution viscosity wasmeasured to study the treatment of polymer flooding supplementary measures affect effluentquality and properties of the polymer solution is diluted,and preferably out of the bestsecondary processing parameters;The use of artificial heterogeneity rectangular cores wereoxygen exposure after sterilization polymer flooding sewage diluted polymer solutionflooding experiment results show that the polymer flooding sewage diluted diluted polymersolution processed polymer flooding than untreated sewage the polymer solution floodingeffect, recovery increased about2%,but diluted polymer solution polymer flooding sewagetreated sewage to reach and depth of dilute polymer solution considerable flooding effect,you need the same molecular weight the polymer concentration in the solution increased by3%.