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Asphaltene Precipitation and the Influence of Dispersants and Inhibitors on Morphology Probed by AFM. COLLOIDS AND INTERFACES 2023. [DOI: 10.3390/colloids7010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Bridging the gap between laboratory-scale experiments and actual oilfield operations is a complex task that requires a compromise between real (authentic) fluids and model systems. Commercial products (i.e., asphaltene inhibitors and dispersants) are often designed to target a wide range of operating conditions and compositions of crude oils, which means that the performance becomes almost case-specific. Through Atomic Force Microscopy (AFM) imaging and Transmission/Backscattering signals (T/BS), the morphology of asphaltene deposits and the mechanisms that eventually lead to precipitated material were evaluated. Two different models (starting solutions) with four different n-alkanes were used to induce variability in asphaltene agglomeration and subsequent precipitation paths. It was found that increasing the carbon number shifted the observed precipitation detection time (T/BS data suggested a shift in the order of ~1000 s when comparing low and high carbon numbers) and influences the density of the precipitated material under static and a sufficiently high concentration of solvent conditions. Further analysis on the morphology of the resulting material after the addition of commonly used chemicals showed that asphaltene stability through inhibition (i.e., blockage or crowding of potential active sites) led to smaller complexes. One of the additives (PIBSA) reduced the average height in ~33% and the mean square roughness in ~72%. On the other hand, stability through dispersion (i.e., hindering agglomeration) leads to a polymer-like network bigger in size, noting that in both cases the system remains soluble. The use of APR resulted in an increase of ~41% and ~54% for the same parameters. This insight sheds light on how to devise efficient chemical strategies to prevent flow assurance issues.
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Lopes AM, Wernert V, Sorbier L, Lecocq V, Denoyel R. Adsorption of asphaltenes on multiscale porous alumina. ADSORPTION 2022. [DOI: 10.1007/s10450-022-00366-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Parlov Vuković J, Novak P, Jednačak T, Kveštak M, Kovačević D, Smrečki V, Mikulandra I, Djetelić Ibrahimpašić M, Glanzer S, Zangger K. Magnetic field influence on asphaltene aggregation monitored by diffusion NMR spectroscopy: Is aggregation reversible at high magnetic fields? J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2018.1561302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Jelena Parlov Vuković
- Refining & Marketing Business Division Product Development Department, INA-Industrija nafte d.d, Zagreb, Croatia
| | - Predrag Novak
- Department of Chemistry, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Tomislav Jednačak
- Department of Chemistry, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Martina Kveštak
- Department of Chemistry, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Davor Kovačević
- Department of Chemistry, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Vilko Smrečki
- Ruđer Bošković Institute, NMR Centre, Zagreb, Croatia
| | - Ivana Mikulandra
- Department of Chemistry, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | | | - Simon Glanzer
- Institute of Chemistry, Organic and Bioorganic Chemistry, University of Graz, Graz, Austria
| | - Klaus Zangger
- Institute of Chemistry, Organic and Bioorganic Chemistry, University of Graz, Graz, Austria
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Han Z, Kong S, Cheng J, Sui H, Li X, Zhang Z, He L. Preparation of Efficient Carbon-Based Adsorption Material Using Asphaltenes from Asphalt Rocks. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02143] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhenwei Han
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Shunli Kong
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
| | - Jing Cheng
- China Petroleum Pipeline Engineering Co. Ltd., Tianjin Branch, Tianjin 300000, China
| | - Hong Sui
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Xingang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Zisheng Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
- Department of Chemical and Biological Engineering, University of Ottawa, Ottawa K1N 6N5, Canada
| | - Lin He
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
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Wei D, Ge L, Guo R. Effect of hydrophilically modified ibuprofen on thermoresponsive gelation of pluronic copolymer. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Asphaltene fractionation based on adsorption onto calcium carbonate: Part 2. Self-association and aggregation properties. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.11.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Pradilla D, Subramanian S, Simon S, Sjöblom J, Beurroies I, Denoyel R. Microcalorimetry Study of the Adsorption of Asphaltenes and Asphaltene Model Compounds at the Liquid-Solid Surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:7294-7305. [PMID: 27348137 DOI: 10.1021/acs.langmuir.6b00816] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The adsorption of an acidic polyaromatic asphaltene model compound (C5PeC11) and indigenous C6-asphaltenes onto the liquid-solid surface is studied. Model compound C5PeC11 exhibits a similar type of adsorption with a plateau adsorbed amount as C6-asphaltenes onto three surfaces (silica, calcite, and stainless steel). Model compound BisAC11, with aliphatic end groups and no acidic functionality, does not adsorb at the liquid-silica surface, indicating the importance of polar interactions on adsorption. The values of the adsorption enthalpy characterized by the ΔHz parameter (the enthalpy at zero coverage) indicate that the type of adsorption and the driving force depend on the surface, a key feature when discussing asphaltene deposition. The adsorption of C5PeC11 onto silica is shown to be driven primarily by H bonding (ΔHz = -34.9 kJ/mol), unlike adsorption onto calcite where polar van der Waals and acidic/basic interactions are thought to be predominant (ΔHz = -23.5 kJ/mol). Interactions between C5PeC11 and stainless steel are found to be weak (ΔHz = -7.7 kJ/mol). Comparing C6-asphaltenes and their esterified counterpart shows that adsorption at the liquid-solid surface is not influenced by the formation of H bonds. This was evidenced by the similar adsorbed amounts obtained. Finally, C5PeC11 captures, to a certain extent, the adsorption interactions of asphaltenes present at the calcite-oil and stainless steel-oil surfaces.
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Affiliation(s)
- Diego Pradilla
- Ugelstad Laboratory, Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU) , NO-7491 Trondheim, Norway
| | - Sreedhar Subramanian
- Ugelstad Laboratory, Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU) , NO-7491 Trondheim, Norway
| | - Sébastien Simon
- Ugelstad Laboratory, Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU) , NO-7491 Trondheim, Norway
| | - Johan Sjöblom
- Ugelstad Laboratory, Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU) , NO-7491 Trondheim, Norway
| | - Isabelle Beurroies
- Aix Marseille Université, CNRS, MADIREL UMR 7246, 13397 Marseille cedex 20, France
| | - Renaud Denoyel
- Aix Marseille Université, CNRS, MADIREL UMR 7246, 13397 Marseille cedex 20, France
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An ITC study of interaction and complexation of asphaltene model compounds in apolar solvent II: Interactions with asphaltene inhibitors. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.01.052] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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