treatment of polymer flooding produced water at chile

treatment of polymer flooding produced water at chile
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  • What is polymer flooding?
  • 1. Introduction Polymer flooding is an enhanced oil recovery (EOR) method that utilizes high molecular weight (Mw) polymers to increase viscosity of injected water (i.e., reduce water mobility)—thereby improving reservoir sweep efficiency when displacing viscous oil.
  • Why is Polymer-Flooding produced water more difficult to treat for reinjection?
  • Polymer-flooding produced water is more difficult to treat for reinjection compared with normal produced water because of the presence of residual hydrolyzed polyacrylamide (HPAM). A novel cathode membrane integrated electro-hybrid ozonation-coagulation (CM-E-HOC) process was proposed for the treatment of polymer-flooding produced water.
  • How can a polymer flood be controlled?
  • Effective assessment and control of a polymer flood would be greatly enhanced if the flow profiles along the well were known. This would allow timely identification and remediation of fractures and fracture-like features that allow polymer to channel directly between wells.
  • Why do polymer floods need injection & production wells?
  • Rather than focus on idealized 5-spot or other pattern configurations that are common during waterflooding, polymer floods require greater emphasis on placing injection and production wells in an attempt to take advantage of the natural “line drive” afforded by fracture extension.