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Influence of Demulsifier Aging on Its Performance in Heavy Oil Synthetic Emulsions
https://orcid.org/https://orcid.org/0000-0002-4888-2247
https://orcid.org/https://orcid.org/0000-0001-8017-848X
https://orcid.org/https://orcid.org/0000-0002-3300-875X
https://orcid.org/https://orcid.org/0000-0002-9454-9517
Flow assurance is one of the main challenges in the oil industry. Many factors can affect the oil fluidity, including the oil °API and the formation of water-in-oil (w/o) emulsions that increase the fluid viscosity. The demulsification process aims to decrease as much as possible the water content in the crude oil. Chemical products known as demulsifiers can be used to aid in this process. In laboratory, the chemicals can be evaluated under temperature and water content conditions similar to those in the oil field. In this work, the effect of demulsifier aging on its performance, simulating oil field storage, was evaluated using synthetic w/o emulsion prepared with a heavy crude oil and brine at 55 000 ppm. The crude oil was characterized and some demulsifier properties were measured along the time. The crude oil was identified as a heavy oil containing 11.6% of asphaltenes, contributing to the w/o emulsion stability. The demulsifier performance increased with aging time, and the results strongly suggested that a mere evaporation of the additive solvent occurs, concentrating its active matter.
Influence of Demulsifier Aging on Its Performance in Heavy Oil Synthetic Emulsions
https://orcid.org/https://orcid.org/0000-0002-4888-2247
https://orcid.org/https://orcid.org/0000-0001-8017-848X
https://orcid.org/https://orcid.org/0000-0002-3300-875X
https://orcid.org/https://orcid.org/0000-0002-9454-9517
Flow assurance is one of the main challenges in the oil industry. Many factors can affect the oil fluidity, including the oil °API and the formation of water-in-oil (w/o) emulsions that increase the fluid viscosity. The demulsification process aims to decrease as much as possible the water content in the crude oil. Chemical products known as demulsifiers can be used to aid in this process. In laboratory, the chemicals can be evaluated under temperature and water content conditions similar to those in the oil field. In this work, the effect of demulsifier aging on its performance, simulating oil field storage, was evaluated using synthetic w/o emulsion prepared with a heavy crude oil and brine at 55 000 ppm. The crude oil was characterized and some demulsifier properties were measured along the time. The crude oil was identified as a heavy oil containing 11.6% of asphaltenes, contributing to the w/o emulsion stability. The demulsifier performance increased with aging time, and the results strongly suggested that a mere evaporation of the additive solvent occurs, concentrating its active matter.
Influence of Demulsifier Aging on Its Performance in Heavy Oil Synthetic Emulsions
https://orcid.org/https://orcid.org/0000-0002-4888-2247
https://orcid.org/https://orcid.org/0000-0001-8017-848X
https://orcid.org/https://orcid.org/0000-0002-3300-875X
https://orcid.org/https://orcid.org/0000-0002-9454-9517
Flow assurance is one of the main challenges in the oil industry. Many factors can affect the oil fluidity, including the oil °API and the formation of water-in-oil (w/o) emulsions that increase the fluid viscosity. The demulsification process aims to decrease as much as possible the water content in the crude oil. Chemical products known as demulsifiers can be used to aid in this process. In laboratory, the chemicals can be evaluated under temperature and water content conditions similar to those in the oil field. In this work, the effect of demulsifier aging on its performance, simulating oil field storage, was evaluated using synthetic w/o emulsion prepared with a heavy crude oil and brine at 55 000 ppm. The crude oil was characterized and some demulsifier properties were measured along the time. The crude oil was identified as a heavy oil containing 11.6% of asphaltenes, contributing to the w/o emulsion stability. The demulsifier performance increased with aging time, and the results strongly suggested that a mere evaporation of the additive solvent occurs, concentrating its active matter.
Influence of Demulsifier Aging on Its Performance in Heavy Oil Synthetic Emulsions
Pet. Chem.
Nunes, Rita de Cassia P. (author) / Silva, Carla Michele F. (author) / Rocha, Paulo Cristiano S. (author) / Lucas, Elizabete F. (author)
Petroleum Chemistry ; 63 ; 925-930
2023-08-01
6 pages
Article (Journal)
Electronic Resource
English
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