ATIVAÇÃO DE BENTONITA PARA APLICAÇÃO EM FLUIDOS DE PERFURAÇÃO
Bentonites are compounds made of clay which are characterized according to the presence of the most predominant cation in their structure, and thus can be classified as sodium, calcium or polycationic bentonite. Sodium bentonite has direct application in the oil industry, and it is mainly used as a...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/39465 |
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| Resumo: | Bentonites are compounds made of clay which are characterized according to the presence of the most predominant cation in their structure, and thus can be classified as sodium, calcium or polycationic bentonite. Sodium bentonite has direct application in the oil industry, and it is mainly used as a viscosifier in aqueous drilling fluids due to its high degree of swelling. However, in Brazil, most of the bentonite deposits are composed by calcium bentonite, which requires appropriate treatment for the transformation of calcium bentonite into sodium bentonite. Therefore, this study aims at analyzing the performance of the activation of a calcium bentonite. In order to perform this activation, chemical compounds such as sodium carbonate and sodium chloride in the concentration of 2 M were used by varying the humidity percentage of the clay in 5, 25 and 45%. The activation was verified by X-ray fluorescence analysis (FRX), rheology, salinity and alkalinity. As a result, we conclude that the activation did not occur, yet we identified (i) possible reasons for the cause of the activation failure, and (ii) the percentage of humidity that achieved the best performance |
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