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Dynamic rheology and relaxation time spectra of oil-based self-degradable gels

2015; Wiley; Volume: 54; Issue: 3 Linguagem: Inglês

10.1002/polb.23918

1099-0488

Oscar Vernáez, Sylvie Dagréou, Bruno Grassl, Alejandro J. Müller,

Material Dynamics and Properties

Journal of Polymer Science Part B: Polymer PhysicsVolume 54, Issue 3 p. 433-444 Full Paper Dynamic rheology and relaxation time spectra of oil-based self-degradable gels Oscar Vernáez, Corresponding Author Oscar Vernáez Department of Well Productivity, PDVSA Intevep, Urb. Santa Rosa, Sector El Tambor, Edo, Los Teques 1201, Miranda, Venezuela Departamento De Ciencia De Los Materiales, Grupo De Polímeros USB, Universidad Simón Bolívar, Apartado 89000, Venezuela, Caracas, 1080 Equipe De Physique Et Chimie Des Polymères, Université De Pau et des Pays de l'Adour/CNRS IPREM UMR5254, 2, Avenue Du Président Angot, Pau, 64053Correspondence to: O. Vernáez (E-mail: vernaezo@pdvsa.com)Search for more papers by this authorSylvie Dagreou, Sylvie Dagreou Equipe De Physique Et Chimie Des Polymères, Université De Pau et des Pays de l'Adour/CNRS IPREM UMR5254, 2, Avenue Du Président Angot, Pau, 64053Search for more papers by this authorBruno Grassl, Bruno Grassl Equipe De Physique Et Chimie Des Polymères, Université De Pau et des Pays de l'Adour/CNRS IPREM UMR5254, 2, Avenue Du Président Angot, Pau, 64053Search for more papers by this authorAlejandro J. Müller, Alejandro J. Müller Departamento De Ciencia De Los Materiales, Grupo De Polímeros USB, Universidad Simón Bolívar, Apartado 89000, Venezuela, Caracas, 1080 POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel De Lardizabal 3, Donostia-San Sebastián, 20018 Spain IKERBASQUE, Basque Foundation for Science, Bilbao, SpainSearch for more papers by this author Oscar Vernáez, Corresponding Author Oscar Vernáez Department of Well Productivity, PDVSA Intevep, Urb. Santa Rosa, Sector El Tambor, Edo, Los Teques 1201, Miranda, Venezuela Departamento De Ciencia De Los Materiales, Grupo De Polímeros USB, Universidad Simón Bolívar, Apartado 89000, Venezuela, Caracas, 1080 Equipe De Physique Et Chimie Des Polymères, Université De Pau et des Pays de l'Adour/CNRS IPREM UMR5254, 2, Avenue Du Président Angot, Pau, 64053Correspondence to: O. Vernáez (E-mail: vernaezo@pdvsa.com)Search for more papers by this authorSylvie Dagreou, Sylvie Dagreou Equipe De Physique Et Chimie Des Polymères, Université De Pau et des Pays de l'Adour/CNRS IPREM UMR5254, 2, Avenue Du Président Angot, Pau, 64053Search for more papers by this authorBruno Grassl, Bruno Grassl Equipe De Physique Et Chimie Des Polymères, Université De Pau et des Pays de l'Adour/CNRS IPREM UMR5254, 2, Avenue Du Président Angot, Pau, 64053Search for more papers by this authorAlejandro J. Müller, Alejandro J. Müller Departamento De Ciencia De Los Materiales, Grupo De Polímeros USB, Universidad Simón Bolívar, Apartado 89000, Venezuela, Caracas, 1080 POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel De Lardizabal 3, Donostia-San Sebastián, 20018 Spain IKERBASQUE, Basque Foundation for Science, Bilbao, SpainSearch for more papers by this author First published: 05 October 2015 https://doi.org/10.1002/polb.23918Citations: 5Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat ABSTRACT In oil well treatments, such as matrix stimulations or water shut-off, it is often necessary to temporary isolate or protect productive zones with chemical diverting agents. In this work, a solution of peroxide crosslinked styrene-butadiene rubber (SBR) has been transformed to a self-degradable gel system by adding hydroperoxide as a degradation agent to the formulation. This oil-based self-degradable gel has been characterized by linear oscillatory rheometry. In situ and ex situ experiments were performed to evaluate the evolution of crosslinking and degradation reactions, including the liquid-solid transition. Relaxation time spectra were calculated from dynamic mechanical frequency sweeps. Structural changes in the polymer network were visible within the relaxation time spectra, since it qualitatively showed the contribution of local simple entanglements and chemical covalent bonds to the final rheological behavior. The influence of peroxide concentration, polymer concentration, hydroperoxide concentration, and temperature have been studied and described in terms of rheological changes. Finally, a hydrogen donor aromatic solvent was used as scavenger to retard both crosslinking and degradation reactions. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 433–444 Citing Literature Volume54, Issue31 February 2016Pages 433-444 RelatedInformation