Reclamation of the Polymer-Flooding Produced Water

Chunjie HAN, Yang LIU, Tan ZHAO, Guolin JING

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DOI: 10.4236/jwarp.2009.11005                

Abstract

In order to resolve the discharge problem of the polymer-flooding produced water (PFPW) in crude oil ex-traction, the PFPW was treated by a four-grade and four-segment (four GS) electrodialysis reversal(EDR) set-up. The testing results show that the treated PFPW has two kinds, one is the diluted treated PFPW, the total dissolved solids (TDS) of the diluted treated PFPW is less than the original PFPW, the diluted treated PFPW is feasible for confecting polymer solution; another one is the concentrated treated PFPW, the TDS of the concentrated treated PFPW exceeds the original PFPW, the concentrated treated PFPW is feasible for replacing the PFPW as the injecting water in the water-flooding process for high permeability layer. This treatment technology can not only decrease environment pollution resulted by the PFPW discharge, but also achieve closed-circuit of the water resource during crude oil extraction by using polymer flooding technology.

Keywords

Polymer-Flooding Produced Water, Total Dissolved Solids, Electrodialysis, Treatment

Conflicts of Interest

The authors declare no conflicts of interest.

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