The search for new formulations of lubricating additives in drilling fluids is constant, due to the need of the oil and gas industry to improve products and processes and preserve the ecosystem, contributing to the sustainable development. The use of microemulsions in the upstream phase is increasing, mainly in the area of advanced oil recovery, but innovative in the area of oil well drilling. The objective of this study was to develop and characterize biodegradable microemulsions and of low production costs for application as a lubricant additive for water-based drilling fluids. For this purpose, the following were carried out: a) stability test on microemulsions and additive drilling fluids; b) particle size testing in the microemulsions; c) turbidity point test, in order to evaluate the microemulsion behavior regarding temperature; and d) lubricity test of microemulsions, proposed lubricant and additive drilling fluids. The lubricity results found were satisfactory, showing that the microemulsified systems evaluated can be applied as biodegradable lubricant additives in water-based drilling fluids for oil well drilling, causing less environmental impact.
Over time, oil production in a reservoir tends to decrease, which makes it difficult to flow through the reservoir to the well, making its production increasingly difficult and costly. Due to their physical properties, such as reducing the water/oil interfacial tension, surfactants have been used in enhanced oil recovery (EOR) processes, however, their adsorption presents as an undesirable and inevitable factor and can decrease the efficiency of the method. This work’s main objective is to evaluate the effect of glycerol in the adsorption of surfactants in sandstones, as well as in the recovery factor during EOR. Brine solutions containing the nonionic surfactant saponified coconut oil (SCO), with and without glycerol, were used in the adsorption and oil recovery tests in sandstone. Adsorption, recovery, rheological, and thermogravimetric analysis were carried out. Regarding the surfactant/glycerol/brine solution, there was an improvement in the oil mobility, as the glycerol contributed to an increase in the viscosity of the solution, thereby increasing the sweep efficiency. The recovery factor obtained for the surfactant solution with glycerol was satisfactory, being 53% higher than without glycerol, because it simultaneously provided an increase in viscosity and a decrease in interfacial tension, both of which are beneficial for the efficiency of the process.
As buscas por otimizar o processo de produção de petróleo têm sido constantes ao redor do mundo, tendo visto que os métodos primários possuem um fator de recuperação de apenas 15%. O uso de tensoativos proporciona um aumento significativo na recuperação de óleo nos poços de petróleo. O objetivo deste estudo foi realizar uma prospecção tecnológica de tensoativos para indústria petroquímica, analisando a participação do Brasil nos depósitos de pedido de patente em bases nacionais e internacionais até o momento. Para isso, a prospecção foi realizada no banco Latino Americano e Espanhol, no banco da Organização Mundial de Propriedades Intelectual, no banco Europeu de Patentes, no banco Americano de Marcas e Patentes e no banco de dados do Instituto Nacional de Propriedade Industrial do Brasil. O maior número de patentes no banco nacional foi depositado nos últimos 10 anos. Dentre os maiores depositários estão os Estados Unidos e a China.
Resumo O petróleo é uma mistura de compostos químicos orgânicos (hidrocarbonetos) que é normalmente separado em frações de acordo com a faixa de ebulição dos compostos. Atualmente, com o advento da petroquímica, além da grande utilização dos seus derivados, centenas de novos compostos são produzidos. Com a utilização de softwares na indústria de petróleo é possível fazer um planejamento estratégico da vida útil de um campo de petróleo; simular a produção de óleo e gás, prever resultados, testar diferentes cenários, escolher as melhores opções para otimizar a produtividade. Este trabalho tem como objetivo principal realizar uma prospecção tecnológica de softwares aplicados a indústria de petróleo e a participação dos países no desenvolvimento desses programas nos depósitos de pedidos de patentes em bancos de inovação e tecnologia. Na pesquisa foram encontrados vários documentos que envolvem os termos programa e petróleo e software and petroleum, com 24 documentos na LATIPAT, 4 na WIPO, mais de 11 na EPO e 4 no INPI em que o Brasil participa expressivamente como depositário deste tipo de patente, o que mostra a importância da indústria petroquímica para este país.
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