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vol.34 número1INVESTIGATING THE LONG-TERM STABILITY AND KINETICS OF SUPEROXIDE ION IN DIMETHYL SULFOXIDE CONTAINING IONIC LIQUIDS AND THE APPLICATION OF THIOPHENE DESTRUCTIONSPINNABILITY, MORPHOLOGY AND MECHANICAL PROPERTIES OF GELATINS WITH DIFFERENT BLOOM INDEX índice de autoresíndice de assuntospesquisa de artigos
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Brazilian Journal of Chemical Engineering

versão impressa ISSN 0104-6632versão On-line ISSN 1678-4383

Resumo

CHAUHAN, G.; OJHA, K.  e  BARUAH, A.. EFFECTS OF NANOPARTICLES AND SURFACTANT CHARGE GROUPS ON THE PROPERTIES OF VES GEL. Braz. J. Chem. Eng. [online]. 2017, vol.34, n.1, pp.241-251. ISSN 0104-6632.  http://dx.doi.org/10.1590/0104-6632.20170341s20150094.

Application of viscoelastic surfactant (VES) fluids in hydraulic fracturing is still in the development stage, though shear thinning behavior and water solubility are the two important characteristics behind increasing interest in their use in fracturing jobs. Effects of ionic characteristics and the concentration of different surfactants on the rheological properties of VES fluid have been investigated in detail in the present study for a number of surfactant systems. Phase behavior of the system was studied and the gel region was identified. Effects of alkali on the viscosity, thermal stability, and miscibility (in water) of the developed gel were also investigated. Dynamic rheological study was carried out to determine the storage modulus and loss modulus. This study shows that mixed anionic-anionic system gives improved rheology compared to single anionic and mixed anionic-zwitterionic surfactant systems.

Palavras-chave : Hydraulic Fracturing; Viscoelastic gel; Surfactant based fluids; Rheology; Nanoparticles.

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