Banca de DEFESA: TAMYRIS THAISE COSTA DE SOUZA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : TAMYRIS THAISE COSTA DE SOUZA
DATA : 11/10/2017
HORA: 09:00
LOCAL: AUDITORIO DO NUPEG
TÍTULO:

"Technical - economic analysis of methods of microemulsion injection in advanced oil recovery"


PALAVRAS-CHAVES:

Surfactant, microemulsion, enhanced oil recovery, economic feasibility of project.


PÁGINAS: 144
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Química
RESUMO:
Abstract: Enhanced oil recovery methods are used to increase the productivity of reservoirs in which water or gas injections are inefficient, or can be used as a initial alternative to production. Among these methods are thermal, miscible and chemical methods. The use of advanced recovery chemical methods acts on the alteration of physicochemical rock / fluid properties, reducing the residual oil saturation and increasing the displacement of oil in the porous medium. Injection of chemical fluids, such as polymer solution, surfactant solution and microemulsion, seeks to increase the viscosity of injected fluid, decrease interfacial tension and increase miscibility between the injected fluid and the retained oil. Studies in this area show that chemical fluids are considered an effective alternative in the production of oil after the use of water or gas as an injection fluid. In this work the use of chemical fluids (surfactant and microemulsion solution) in the advanced oil recovery (EOR) with Ultramina NP200 as a surfactant was evaluated. Microemulsified systems are composed of: Ultramina NP200; n-Butanol; kerosene and local water supply. Microemulsion systems (SM) were characterized by measurements of particle diameter, surface tension, interfacial tension and viscosity. In the EOR tests, the influence of the injected surfactant concentration and the way in which surface tension, interfacial and viscosity influence the recovery of crude oil (29º API) were evaluated. The use of Ultramin NP200 solution has been able to increase the capacity of displacement of petroleum in relation to the injection of brine. However, the surfactant solution, despite the high concentration (25% m / m), obtained a lower recovery factor when compared to the microemulsion, even when the active matter concentration is low (1.0% - m / m). The recovery factor increased with increasing surfactant concentration in the microemulsion, but this growth was significant for SM injection with up to 6% (m / m) of surfactant. It has also been observed that satisfactory results of %OOIPA can be achieved by injecting smaller amounts of microemulsion followed by injection of brine. The use of the microemulsified system with 6% surfactant (SM4) with a flow rate of 0.5 mL / min, reached the oil recovery in place of 24.1% (% OOIPA) and total recovery of 77.2% (% OOIPT). In the economic evaluation it was observed that the use of small volumes of microemulsion, with higher concentration of surfactant, can result in a more viable project, by analyzing the price of a barrel of oil.


MEMBROS DA BANCA:
Interno - 347289 - AFONSO AVELINO DANTAS NETO
Externo à Instituição - ANTONIO ROBSON GURGEL - UFERSA
Externo ao Programa - 1754344 - MARCOS ALLYSON FELIPE RODRIGUES
Presidente - 347057 - TEREZA NEUMA DE CASTRO DANTAS
Externo à Instituição - TULIO YTERBIO FERNANDES VALE - PETROBRAS
Externo ao Programa - 1531209 - VANESSA CRISTINA SANTANNA
Notícia cadastrada em: 28/09/2017 15:55
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