Optimization of Polymer Injection Program for Second-Class Oil-Bearing Layer

Abstract:

This paper, taking cumulative incremental oil production per unit thickness as evaluation index through variance analysis method, optimizes the injection rate and concentration of types of well groups with polymer flooding in the second-class oil-bearing layer of Daqing oilfield. The results show that for the ontocline and poorly communicated well groups, the optimal injection rate ranges from 0.10 to 0.15 PV/a and the optimal concentration ranges from 800 to 950 mg/L; for the supermature but poorly communicated well groups, the optimal injection rate ranges from 0.10 to 0.15 PV/a and the optimal concentration should be over 1200 mg/L; for the ontocline but well communicated well groups, the optimal injection rate ranges from 0.15 to 0.20 PV/a and the optimal concentration ranges from 850 to 950 mg/L; for the supermature and well communicated well groups, the optimal injection rate should be over 0.20 PV/a and the optimal concentration should be over 1100 mg/L.

• Periodical: Advanced Materials Research (Volumes 734-737)
• Pages: 1213-1218
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.734-737.1213
• Online since: August 2013
• Authors: Li Yang Song, Ling Zhi Zhang, Hao Yang, Ji Cheng Zhang
• Keywords: Injection Program, Oil Layer, Polymer Flooding, Second Class

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