Effect of the salinity in the interfacial tension of the hydrocarbon/water system in isobaric conditions and gradual increase of temperature
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Universidad Industrial de Santander
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O estudo da tensão interfacial é importante devido a que define os principais parâmetros nos processos de recuperação avançada de petróleo. O artigo procura determinar experimentalmente as características específicas dos reservatórios carbonados e o comportamento da tensão interfacial em sistemas contaminados com carbonato de cálcio e cloreto de sódio e as características específicas dos reservatórios carbonados. O trabalho foi desenvolvido no equipamento Drop Shape Analyzer DSA 100HP e foram propostas duas configurações do sistema n-alcano/água (a primeira com fluidos puros e a segunda com cloreto de sódio dissolvido na água com uma concentração de 3%). Em quanto às condições de operação, foram realizadas a pressão atmosférica constante e quatro temperaturas diferentes, Os resultados obtidos foram processados mediante análise estatístico. Foram obtidas duas equações de reta onde em um dos casos se conseguiu um ajuste ótimo com dados obtidos na literatura e modelos numéricos, entanto, através das correlações evidenciou-se uma significativa diferença dentre ambos sistemas, mostrando assim que o sistemaque contem salmoura apresenta menor valor de tensão interfacial.
The interfacial tension is an important property in the enhanced oil recovery processes. And determinate different parameters in the Enhanced Recovery Processes, this paper is addressed in determine experimentally the interfacial tension behavior in systems who has calcium carbonate or sodium chlorate, characteristic of the carbonate reservoirs.This work was carried out in the Drop Shape Analyzer DSA100HP equipment, where was proposed two systems n-alkane/water (one with pure fluids and other with three percent of sodium chloride). Maintaining constant the pressure and gradually increase the temperature, these results are then processed through a statistical analysis obtained values of interfacial tension for each thermal point. In such a way the results achieve two equations, where once that is perfectly adjusted to the literature and which were validated using the comparison with other authors, finding values of angle coefficient whose relative error percentage is entirely satisfactory,similarly was presented a setting optimum to be matched with theoretical values extracted from numerical methods. According of these ideas, the correlations have a significant difference between both systems, the system who have contamination have a lower interfacial tension value.
The interfacial tension is an important property in the enhanced oil recovery processes. And determinate different parameters in the Enhanced Recovery Processes, this paper is addressed in determine experimentally the interfacial tension behavior in systems who has calcium carbonate or sodium chlorate, characteristic of the carbonate reservoirs.This work was carried out in the Drop Shape Analyzer DSA100HP equipment, where was proposed two systems n-alkane/water (one with pure fluids and other with three percent of sodium chloride). Maintaining constant the pressure and gradually increase the temperature, these results are then processed through a statistical analysis obtained values of interfacial tension for each thermal point. In such a way the results achieve two equations, where once that is perfectly adjusted to the literature and which were validated using the comparison with other authors, finding values of angle coefficient whose relative error percentage is entirely satisfactory,similarly was presented a setting optimum to be matched with theoretical values extracted from numerical methods. According of these ideas, the correlations have a significant difference between both systems, the system who have contamination have a lower interfacial tension value.
Keywords
Interfacial Tensions, Isobaric Conditions and Gradual Increase of Temperature, Hidrocarbon/water System, Hidrocarbon/water/Sodium chloride System, Tensão interfacial, Condições Isobáricas e Aumento de Temperatura, Sistema óleo/água, Sistema óleo/água/ cloreto de sódio