SciELO - Scientific Electronic Library Online

 
vol.19 número2Incorporação de lodo industrial em compósitos de resina poliésterAvaliação das propriedades mecânicas de material polimérico utilizado na confecção de caixas de medição de energia elétrica índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Polímeros

versão impressa ISSN 0104-1428versão On-line ISSN 1678-5169

Resumo

BORGES, Caroline D.; VENDRUSCOLO, Claire T.; MARTINS, André L.  e  LOMBA, Rosana F. T.. Rheological behaviour of xanthan produced by Xanthomonas arboricola pv pruni for application in fluid of oil well perforation. Polímeros [online]. 2009, vol.19, n.2, pp.160-165. ISSN 1678-5169.  https://doi.org/10.1590/S0104-14282009000200015.

The aim of this work was to evaluate xanthans produced by Xanthomonas arboricola pv pruni to be used for increasing the viscosity of fluids applied in the perforation of oil wells, which were compared with three commercial samples. In order to do that, the viscosity of aqueous and saline solutions (NaCl, KCl and CaCl2) from different xanthans, at different temperatures (25, 45, 65 and 80 ºC), was determined in a rheometer. The rheological parameters consistency index (K) and flow behaviour index (n) were obtained by adjusting the data with the Ostwald-de-Waelle model. Gel strength (G0, G10 e G30) was determined in a viscometer, and the concentration of monovalent (sodium and potassium) and divalent salts (calcium and magnesium) was determined in flame photometer and in atomic absorption spectrometer, respectively. Taken together, the results obtained in this study showed that xanthans produced by patovar pruni, Xp 106-600 and Xp 115-600, are promising for fluids used in oil well perforation with saline solutions, because they have low concentration of salts. As for the commercial polymers, they presented the best results when used in aqueous solution, because they had high salt concentrations.

Palavras-chave : Xanthomonas arboricola pv pruni; xanthan; fluid for oil well perforation.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons