| Issue |
MATEC Web Conf.
Volume 171, 2018
The First International Conference on Energy, Power, Petroleum and Petrochemical Engineering (E3PE 2017)
|
|
|---|---|---|
| Article Number | 04001 | |
| Number of page(s) | 6 | |
| Section | Chapter 4: Enhanced Oil Recovery | |
| DOI | https://doi.org/10.1051/matecconf/201817104001 | |
| Published online | 04 June 2018 | |
Evaluation of Polymer Alternating Waterflooding in Multilayered Heterogeneous Waterflooded Reservoir
1 Department of Mining and Petroleum Engineering Chulalongkorn University Bangkok, Thailand
2 Department of Mining and Petroleum Engineering Chulalongkorn University Bangkok, Thailand
* Email: warut.t@student.chula.ac.th
** Email: falan.s@chula.ac.th
Polymer flooding is widely implemented to improve oil recovery since polymer can increase sweep efficiency and smoothen heterogeneous reservoir profile. However, polymer solution is somewhat difficult to be injected due to high viscosity and thus, water slug is recommended to be injected before and during polymer injection in order to increase an ease of injecting this viscous fluid into the wellbore. In this study, numerical simulation is performed to determine the most appropriate operating parameters to maximize oil recovery. The results show that pre-flushed water should be injected until water breakthrough while alternating water slug size should be as low as 5% of polymer slug size. Concentration for each polymer slugs should be kept constant and recommended number of alternative cycles is 2. Combining these operating parameters altogether contributes to oil recovery of 53.69% whereas single-slug polymer flooding provides only 53.04% which is equivalent to 8,000 STB of oil gain.
Key words: Polymer flooding / Polymer Injectivity / Concentration Sorting / Number of Alternative Cycle
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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