Monitoring Polymer-Enhanced Foam Displacements Through Heterogeneous Porous Media: A Pore-Scale Study
| Autor: | Hossein Davarzani, Mohammad Hossein Ghazanfari, Mohammad Reza Rasaei, Aliyar Javadi, Amir Hossein Mohammadi Alamooti, Alireza Ghaderi Ardakani |
|---|---|
| Přispěvatelé: | Institute of Petroleum Engineering, Department of Chemical Engineering, University of Tehran, Department of Chemical and Petroleum Engineering, Sharif University of Technology, Bureau de Recherches Géologiques et Minières (BRGM) (BRGM) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Materials science Renewable Energy Sustainability and the Environment Mechanical Engineering Pore scale Energy Engineering and Power Technology 02 engineering and technology Polymer 021001 nanoscience & nanotechnology Viscosity Fuel Technology 020401 chemical engineering chemistry Geochemistry and Petrology [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] 0204 chemical engineering Composite material 0210 nano-technology Porous medium ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Journal of Energy Resources Technology Journal of Energy Resources Technology, American Society of Mechanical Engineers, 2020, 142 (7), ⟨10.1115/1.4046943⟩ |
| ISSN: | 0195-0738 |
| DOI: | 10.1115/1.4046943⟩ |
| Popis: | In this work, fundamental understanding of phase displacements involved in polymer-enhanced air foam is investigated which was not well discussed in the available literature. To do this, a series of foam injection experiments were performed on heterogeneous rock-look-alike micromodels in the presence and absence of a single fracture. The models were initially saturated with crude oil and experienced post polymer-enhanced foam injection process. We observed for the first time the mechanism of synergetic upstream snap-off and lamella division in the vicinity of the area where the permeability contrast was obvious. Observations showed two opposite effects of oil emulsioning and bubble coalescence when gas bubbles came in contact with oil in pore bodies. Fractal dimension analysis of front polymer-enhanced foam illustrates a noticeable improvement in oil displacement. Primary enhanced foam injection to oil saturated micromodel causes bubble coarsening which leads to less efficient oil displacement process. The lower the polymer concentration, the less stable the foam; consequently, the less efficient oil displacement is observed. Lower viscosity oil results in lower recovery efficiency as the stability of foam decreases. To shed light on the dynamic behavior of polymer–surfactant interface, some dynamic surface tension tests were conducted. Results showed that repellency between surfactant and polymer molecules causes surfactant molecules to be present on the surface making the initial dynamic interfacial tension (IFT) decrease. Results of this work help to better understand how polymer could enhance the efficiency of foam floods in heterogeneous systems. |
| Databáze: | OpenAIRE |
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