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- Title
A Polymer Injectivity Model Establishment and Application for Early Polymer Injection.
- Authors
Lu, Xiang’an; Liu, Fan; Liu, Guangwei; Pei, Yanli; Jiang, Hanqiao; Chen, Jishuang
- Abstract
In China, early polymer injection has been proved to be an effective way to enhance oil recovery in Bohai offshore field. Since the near wellbore controls injectivity, two-phase flow function needs to be appropriately accounted for to predict polymer injectivity. In this paper, we account for polymer rheology and water-oil two-phase flow in the polymer injectivity model. To properly describe the fluid distribution, we define five regions with unique saturation profiles during polymer flooding and then established a polymer injectivity prediction model for both monolayer and multilayer reservoirs. Compared to the traditional numerical simulation method, the new model improves the injectivity prediction efficiency in early polymer injection. The new model is basically a rapid semi-analytical numerical simulator that can predict the dynamic polymer injectivity based on several field data obtained during an early polymer flood.
- Subjects
RHEOLOGY; POLYMERS; PETROLEUM reservoirs; ENHANCED oil recovery; POLYMER flooding (Petroleum engineering); COMPUTER simulation
- Publication
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ), 2018, Vol 43, Issue 5, p2625
- ISSN
2193-567X
- Publication type
Article
- DOI
10.1007/s13369-017-2950-z