Preparo, caracterização e aplicação de sistemas poliméricos nanoemulsionados com ênfase em recuperação avançada de petróleo

• Autor(a) principal: Barros, Ana Tereza Queiroz de
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UFRN
• Texto Completo: https://repositorio.ufrn.br/handle/123456789/38792
• topic: EOR; Injeção de polímero; Nanoemulsões; Engenharias.

In the current days, oil and gas still being the principal source of global energy which makes the production field rate of the oil fields around the world near to the decline period. Given the growing interest of the oil industry in optimizing EOR methods, systems at the nanoscale have been widely used as thickening agents and controllers of fluid rheology. It has been proven that the appropriate addition of nanoparticles in the polymer can increase performance of certain systems, viscosity and enhancing the rheological behavior, as well as providing increased thermal and chemical resistance when compared to systems containing only traditional polymers. One factor which favors this recovery is related to improvement in mobility ratio between the displacement fluid and the displaced fluid in relation to conventional recovery with water injection. The objective of this work was the study of the application of polymeric nanoemulsionated systems in enhanced oil recovery. The systems were prepared following the spontaneous method in which the constituents that make up such systems favor its own formation. The constituents used were: a mixture of surfactants, co-surfactant (n-butanol), oil phase (kerosene) and salt polymer aqueous solution (NaCl 3,5% e polyacrylamide 0,08%), resulting in systems with compositions of: 2,0 (Nano1) and 2,5% (Nano2) of surfactant. The systems were characterized with regard to appearance, surface tension, density, pH, particle size, half width and polydispersity index, and rheology. After all the characterization, the system with the composition of 2,5% surfactant (Nano2) was used in an oil recovery test to analyze its potential in EOR. The recovery experiments were performed in a machine that simulates the conditions of an oil reservoir, using plugs of Jandaíra limestone rock and oil from the Potiguar oil field Ubarana.