Catalytic decarboxylation of naphthenic acids in crude oils

Dias, Heloísa P.; Gonçalves, Gustavo R.; Freitas, Jair C. C.; Gomes, Alexandre O.; Castro, Eustáquio Vinícius Ribeiro de; Vaz, Boniek G.; Aquije, Glória M. F. V.; Romão, Wanderson

doi:10.1016/j.fuel.2015.05.016

Cited by 40 publications

(19 citation statements)

References 32 publications

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“…Each spectrum was acquired by accumulating 32 scans of time-domain signals in 4 M (mega-point). [17][18][19] Before acquisition, the equipment was externally calibrated using a NaTFA solution. A resolving power, m/Dm 50% ¼ 420-480.000 (in which m/Dm 50% is the full peak width at half-maximum peak height of m/z z 400), and a mass accuracy of <1 ppm provided unambiguous molecular formula assignments for singly charged molecular ions.…”

Section: Esi(à)ft-icr Msmentioning

confidence: 99%

Chemical profiles of Robusta and Arabica coffee by ESI(−)FT-ICR MS and ATR-FTIR: a quantitative approach

et al. 2016

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Section: Esi(à)ft-icr Msmentioning

confidence: 99%

Chemical profiles of Robusta and Arabica coffee by ESI(−)FT-ICR MS and ATR-FTIR: a quantitative approach

et al. 2016

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“…The AN of crude oil is known to be dependent on reservoir temperature, which decreases as the temperature increases because of decarboxylation of the acidic components of the oil. Like the catalytic effect of CaCO 3 , presence of clay minerals or clay metallic oxides [156,[196][197][198] has been identified to promote the thermal degradation of crude oil but to a lesser extent compared to CaCO 3 [156]. The reduction in AN could possibly lead to an increasing base/acid ratio, which has been reported to result in less water-wetness [119,150].…”

Section: Sandstone Rocksmentioning

confidence: 99%

Brine-Dependent Recovery Processes in Carbonate and Sandstone Petroleum Reservoirs: Review of Laboratory-Field Studies, Interfacial Mechanisms and Modeling Attempts

2018

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Brine-dependent recovery, which involves injected water ionic composition and strength, has seen much global research efforts in the past two decades because of its benefits over other oil recovery methods. Several studies, ranging from lab coreflood experiments to field trials, indicate the potential of recovering additional oil in sandstone and carbonate reservoirs. Sandstone and carbonate rocks are composed of completely different minerals, with varying degree of complexity and heterogeneity, but wettability alteration has been widely considered as the consequence rather than the cause of brine-dependent recovery. However, the probable cause appears to be as a result of the combination of several proposed mechanisms that relate the wettability changes to the improved recovery. This paper provides a comprehensive review on laboratory and field observations, descriptions of underlying mechanisms and their validity, the complexity of the oil-brine-rock interactions, modeling works, and comparison between sandstone and carbonate rocks. The improvement in oil recovery varies depending on brine content (connate and injected), rock mineralogy, oil type and structure, and temperature. The brine ionic strength and composition modification are the two major frontlines that have been well-exploited, while further areas of investigation are highlighted to speed up the interpretation and prediction of the process efficiency.

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“…The AN of crude is known to be dependent on reservoir temperature, which decreases as the temperature increases because of decarboxylation of the acidic components of the oil. Like the catalytic effect of CaCO3, presence of clay minerals or clay metallic oxides [92,[153][154][155] has been identified to promote the thermal degradation of crude oil but to a lesser extent compared to CaCO3 [92]. The reduction in AN could possibly lead to increasing base/acid ratio, which has been reported to result in less water-wetness [50,86].…”

Section: Sandstone Rocksmentioning

confidence: 99%

 Brine-Dependent Recovery Processes (Smart-Water/Low-Salinity-Water) in Carbonate and Sandstone Petroleum Reservoirs: Review of Laboratory-Field Studies, Interfacial Mechanisms and Modeling Attempts

Awolayo¹,

Sarma²,

Nghiem³

2018

Preprint

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Brine-dependent recovery process has seen much global research efforts in the past two decades because of their benefits over other oil recovery methods. The process involves the tweaking of the ionic composition and strength of the injected water to improve oil production. In recent years, several studies ranging from laboratory coreflood experiments by many researchers to field trials by several companies admit to the potential of recovering additional oil in sandstone and carbonate reservoirs. Sandstone and carbonate rocks are composed of completely different minerals, with varying degree of complexity and heterogeneity, but wettability alteration has been widely considered as the consequence rather than the cause of brine-dependent recovery. However, there is no consensus on the cause as several mechanisms have been proposed to relate the wettability changes to the improved recovery. This review paper aims to provide a state-of-the-art development in published research and various efforts of the industry. This review outlines an overview of laboratory and field observations, descriptions of underlying mechanisms and their validity, the complexity of the oil-brine-rock interactions, modelling works, and comparison between sandstone and carbonate rocks. The provided information is intended to provide the reader with up-to-date information, point to relevant studies for those who are new and those implementing either laboratory- or field-scale projects to speed up the process of further investigations in this research area. Overall, the outcome of this review would potentially be of immense benefit to the oil industry.

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Catalytic decarboxylation of naphthenic acids in crude oils

Cited by 40 publications

References 32 publications

Chemical profiles of Robusta and Arabica coffee by ESI(−)FT-ICR MS and ATR-FTIR: a quantitative approach

Chemical profiles of Robusta and Arabica coffee by ESI(−)FT-ICR MS and ATR-FTIR: a quantitative approach

Brine-Dependent Recovery Processes in Carbonate and Sandstone Petroleum Reservoirs: Review of Laboratory-Field Studies, Interfacial Mechanisms and Modeling Attempts

Brine-Dependent Recovery Processes (Smart-Water/Low-Salinity-Water) in Carbonate and Sandstone Petroleum Reservoirs: Review of Laboratory-Field Studies, Interfacial Mechanisms and Modeling Attempts

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Catalytic decarboxylation of naphthenic acids in crude oils

Cited by 40 publications

References 32 publications

Chemical profiles of Robusta and Arabica coffee by ESI(−)FT-ICR MS and ATR-FTIR: a quantitative approach

Chemical profiles of Robusta and Arabica coffee by ESI(−)FT-ICR MS and ATR-FTIR: a quantitative approach

Brine-Dependent Recovery Processes in Carbonate and Sandstone Petroleum Reservoirs: Review of Laboratory-Field Studies, Interfacial Mechanisms and Modeling Attempts

&nbsp;Brine-Dependent Recovery Processes (Smart-Water/Low-Salinity-Water) in Carbonate and Sandstone Petroleum Reservoirs: Review of Laboratory-Field Studies, Interfacial Mechanisms and Modeling Attempts

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Product

Resources

About

Brine-Dependent Recovery Processes (Smart-Water/Low-Salinity-Water) in Carbonate and Sandstone Petroleum Reservoirs: Review of Laboratory-Field Studies, Interfacial Mechanisms and Modeling Attempts