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http://hdl.handle.net/1843/51754| Type: | Artigo de Periódico |
| Title: | Aqueous suspensions of carbon black with ethylenediamine and polyacrylamide-modified surfaces: Applications for chemically enhanced oil recovery |
| Authors: | Meiriane Cristina Faria Soares Lima Sthéfany Zaida Silva do Amparo Hélio Ribeiro Antônio Lenito Soares Júnior Marcelo Machado Viana Luciana Moreira Seara Roberto Magalhães Paniago Glaura Goulart Silva Vinicius Caliman |
| Abstract: | Enhanced oil recovery (EOR) technologies mitigate the demand for new reservoirs and are pathways for more efficient uses of non-renewable hydrocarbons. Hydrolyzed polyacrylamide (HPAM) has been used as a thickening agent in aqueous media for EOR. However, HPAM shows low salt and temperature tolerances. Carbon black (CB) is a nanoparticle that exhibits chemical and thermal stability but poor dispersability in polar solvents. In this work, CB surfaces were sequentially modified with ethylenediamine (EDA) and acrylamide (AM) to fabricate CB-EDA-AM particles. These particles had increased nitrogen levels from 0.33% at the CB to 7.19% in the CB-EDA-AM, and the formation of amine and amide groups were identified by XPS analyses. TEM and AFM images suggest the formation of oligomers on the CB-EDA-AM surfaces, which was confirmed by the presence of a glass transition temperature at 114 °C in the DSC curve. For the first time, we report that in harsh salinity and elevated temperature conditions, 5 ppm of surface-modified CB nanoparticles can enhance the rheological stability of HPAM aqueous fluids. A shear stress test performed in brine medium indicated the modified CB particles have showed a maximum gain of 29% in stability at high shear rates compared with neat polymeric solutions. |
| Subject: | Nanopartículas Poliacrilamida Reologia Recuperação secundária de petróleo Carbon-black |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | CMI - CENTRO DE MICROSCOPIA ICX - DEPARTAMENTO DE FÍSICA ICX - DEPARTAMENTO DE QUÍMICA |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1016/j.carbon.2016.08.021 |
| URI: | http://hdl.handle.net/1843/51754 |
| Issue Date: | Nov-2016 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/pii/S0008622316306765 |
| metadata.dc.relation.ispartof: | Carbon |
| Appears in Collections: | Artigo de Periódico |
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