Inverse emulsion free-radical polymerization of acrylamide terpolymer for enhanced oil recovery application in harsh reservoir conditions
| Autor: | Simón López-Ramírez, L. García-Uriostegui, C. Duran-Valencia, J. Barragán-Aroche, G. Pineda-Torres |
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| Rok vydání: | 2017 |
| Předmět: |
Thermogravimetric analysis
Aqueous solution Materials science Polymers and Plastics Radical polymerization Emulsion polymerization 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Polymerization Polymer chemistry Emulsion Materials Chemistry Copolymer Ammonium persulfate 0210 nano-technology |
| Zdroj: | Polymer Engineering & Science. |
| ISSN: | 0032-3888 |
| DOI: | 10.1002/pen.24499 |
| Popis: | A free-radical inverse emulsion polymerization formulation has been developed for preparation of acrylamide (AAm)/sodium 2-acrylamido-2-methylpropanesulfonate (AMPSNa)/N-vinylpyrrolidone (VP) terpolymers. An aqueous solution of a blend of monomers is emulsified in n-decane using Tween 85 (Tw85). Ammonium persulfate (APS) and dicumyl peroxide (DCP) were used as initiators for water and oil phases, respectively. The reactions were catalyzed by temperature and by a redox pair; the former is achieved at 60°C and the latter by adding tetramethylethylenediamine (TEMED) and sodium bisulphite (BisNa) to activate the initiator in water and oil phase, respectively. The emulsion type, stability, conversion, and rate of polymerization were analyzed. The obtained terpolymer was characterized by elemental analysis, infrared spectroscopy (FTIR), 13C nuclear magnetic resonance (NMR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), gel permeation chromatography (GPC), and rheology. Thermal catalyzed emulsion polymerization initiated with DCP showed the best performance as viscosity control agent and as polymeric precursor for in situ gel forming, for water mobility control and flow diversification, respectively. Both application for enhanced oil recovery purposes in harsh oil reservoir conditions are presented. POLYM. ENG. SCI., 2017. © 2017 Society of Plastics Engineers |
| Databáze: | OpenAIRE |
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