Evaluation of functionalized polymeric surfactants for EOR applications in the Illinois Basin
Journal of Petroleum Science and Engineering, ISSN: 0920-4105, Vol: 134, Page: 167-175
2015
- 48Citations
- 84Captures
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Article Description
Molecular modification of water-soluble hydrolyzed polyacrylamide (HPAM) with surfactant-like monomers, known as the functionalized polymeric surfactant (FPS), can be an effective enhanced oil recovery (EOR) method. The FPS–EOR operation is very similar to the conventional polymer flooding (P-Flooding), in terms of the chemical use and field injection costs, but with a potential to further recover more than 5% of OOIP compared to the HPAM–EOR alone. Laboratory tests and a third party core-flood result show FPS can recover more oil than HPAM even at the lower injection pressure. Surfactant-like monomers linked to the FPS backbone improve the microscopic displacement efficiency of water-soluble polymer by pulling them towards the oil–water interface and creating an oil–water emulsion. Unlike the conventional surfactant+polymer (S+P) multi-component systems, single-component FPS–EOR injection has both the sweep efficiency (polymer feature) and the microscopic displacement efficiency (surfactant feature), but can mitigate incompatibility issues such as chromatography separation and surfactant–polymer interactions. Unlike a typical surfactant flooding for which the reduction of oil–water interfacial tension (IFT) to an ultralow level (<10 −3 dyne/cm) is required, a typical FPS solution only reduces IFT to a moderate level (∼10 −1 dyne/cm) at the polymer concentrations of 1000–3000 ppm.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0920410515300188; http://dx.doi.org/10.1016/j.petrol.2015.06.009; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84939455451&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0920410515300188; https://dx.doi.org/10.1016/j.petrol.2015.06.009
Elsevier BV
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