Reaproveitamento de resíduos pesqueiros para produção de nanofluidos voltados à recuperação avançada de petróleo

Abstract

The oil industry is constantly looking for solutions that maximize its production in order to meet the high energy demand worldwide. On the other hand, there is also an environmental issue, a large and recurring generation of waste, arousing the interest in research aimed at sustainability in order to seek solutions that will minimize the negative effect of human action on the environment. To enhance oil production, recovery techniques are required in order to intervene in the reservoir's repressurization or in the alteration of the fluid-rock formation system's properties. Nanofluids, stable nanoparticles dispersed in fluid, are a recent resource investigated in advanced reservoir recovery due to their ability to preferentially alter the formation's wettability through action at the fluid-rock interface. It may probably seem like a stalemate on maximizing production in the oil industry and the concern to minimize the generation of waste, however this paper proposes the reuse of shells from sururu, from which tons of waste are generated in fishing activities developed on the lagoon shore from the Maceió city, to extract calcium carbonate (CaCO3) and thus produce nanofluids from these components. The work evaluated the efficiency of oil recovery compared to water injection, characterizing the materials through Fourier Transform Infrared Spectroscopy (FTIR), Optical Microscopy (OM) and Energy Dispersive X-ray Spectroscopy (EDX) in order to obtain information to help in the validation of the method. recovery. All of the nanofluids evaluated presented an average recovery factor higher than that of the secondary recovery, with emphasis on those thermally treated at 300ºC, which presented a recovery factor greater than 40%.