Thermophysical interface properties of crude oil and aqueous solution containing sulfate anions: experimental and modeling approaches

Lashkarbolooki, M ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1080/10916466.2018.1496099
  3. Publisher: Taylor and Francis Inc , 2019
  4. Abstract:
  5. Sulfate anion is well-known for being one of the most active agents to be injected into the oil reservoirs and being capable of not only altering the interfacial properties of crude oil but also enhancing the water solution properties in oil recovery. In the current study, the effects of temperature and pressure were studied on interfacial tension (IFT) as well as the adsorption behavior of two different solutions containing sulfate anion using experimental measurements and modeling approaches. Although it was expected that IFT values of the studied systems might decrease as temperature increased due to the improvement in the molecule mobility and solubility of crude oil in water, which consequently might lead to the reduction in its free energy, the reverse trend was observed. The measured dynamic IFT values and adsorption behavior revealed that surface excess concentration of natural surfactants (ГNS) can be considered as the most effective parameter on interpreting IFT behavior as a function of temperature. © 2019, © 2019 Taylor & Francis Group, LLC
  6. Keywords:
  7. Adsorption ; EOR ; Experiment ; Model ; Smart water ; Sulfate ; Crude oil ; Experiments ; Free energy ; Models ; Negative ions ; Petroleum reservoirs ; Sulfur compounds ; Temperature ; Adsorption behavior ; Effective parameters ; Effects of temperature ; Interfacial property ; Measurements and modeling ; Natural surfactants ; Surface excess concentration ; Petroleum reservoir engineering
  8. Source: Petroleum Science and Technology ; Volume 37, Issue 21 , 2019 , Pages 2167-2173 ; 10916466 (ISSN)
  9. URL: https://www.tandfonline.com/doi/abs/10.1080/10916466.2018.1496099