Asphaltenes Contribution in Emulsion Formation During Solvent-Steam Processes
- A. Ng (Texas A&M University) | C. Ovalles (Chevron Energy and Technology Center) | I. P. Benson (Chevron Energy and Technology Center) | B. Hascakir (Texas A&M University)
- Document ID
- Society of Petroleum Engineers
- SPE Western Regional Meeting, 22-26 April, Garden Grove, California, USA
- Publication Date
- Document Type
- Conference Paper
- 2018. Society of Petroleum Engineers
- 5.3.6 Chemical Flooding Methods (e.g., Polymer, Solvent, Nitrogen, Immiscible CO2, Surfactant, Vapex), 4 Facilities Design, Construction and Operation, 5.4.6 Thermal Methods, 5.4 Improved and Enhanced Recovery, 1.6 Drilling Operations, 4.1.2 Separation and Treating, 5.5.2 Core Analysis, 5 Reservoir Desciption & Dynamics, 4.3.3 Aspaltenes, 4.1 Processing Systems and Design
- Asphaltenes, Environmentally Friendly Solvent, Solvent-steam
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- 109 since 2007
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The objective of this paper is to enhance the produced oil quality during solvent-steam flooding processes by using asphaltenes precipitants and environmentally friendly solvents as injection fluid. This way, it is aimed to increase the asphaltene deposition tendency and decrease the emulsion formation severity.
Eight one-dimensional core flood experiments were conducted; one steam flooding, three solvent flooding, and four solvent-steam flooding. Five different solvents were tested; propane, n-hexane, toluene, Benzoyl peroxide (BP), and a plant-based environmentally friendly solvent (MS). Solvent and water injection, oil and water production, and temperature along the core flood were continuously measured during each experiment. Both produced oil and residual oil samples were further analyzed to investigate the quality of produced oil samples and the amount of asphaltenes deposited on spent rock. An ASTM method which uses n-pentane was implemented to separate asphaltenes from both produced and residual oil samples. The water content of produced and residual oil samples was determined through thermogravimetric analysis (TGA) and the water-in-oil emulsion content of produced oil samples was visualized with an optical microscope. To understand the impact of each SARA (Saturates, Aromatics, Resins, and Asphaltenes) fractions on produced oil quality during solvent-steam processes, every fraction was exposed to liquid or vapor water and examined under a microscope.
It has been observed that stability of asphaltenes and emulsions varies in the presence of vapor or liquid water. Aromatics and Resins fractions are the main contributors of water-in-oil emulsion formation, and emulsion formation is enhanced with the addition of asphaltenes. Vapor-water (steam) promotes the formation of more severe emulsions than liquid-water. Hence, the emulsion formation mechanism was predicted to start with a foam-formation step in where the vapor steam diffuses into the liquid crude before condensing to form liquid water droplets, and then, forming an emulsion at lower temperatures. Since asphaltenes insoluble solvents were used, diffusion of steam occurs mostly in deasphalted oil and mainly in aromatics and resins.
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ASTM D1250-08 (2013) e 1 Standard Guide for Use of the Petroleum Measurement Tables, ASTM International, West Conshohocken, PA, 2013, https://doi.org/10.1520/D1250-08R13E01
ASTM D2007-11(2016) Standard Test Method for Characteristic Groups in Rubber Extender and Processing Oils and Other Petroleum-Derived Oils by the Clay-Gel Absorption Chromatographic Method, ASTM International, West Conshohocken, PA, 2016, https://doi.org/10.1520/D2007-11R16
ASTM D2196-15 Standard Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational Viscometer, ASTM International, West Conshohocken, PA, 2015, https://doi.org/10.1520/D2196-15.
Coelho, R.S.C., Ovalles, C., Benson, I.P.. 2016. Clay-Asphaltene Interactions during Hybrid Solvent-Steam Injection into Bitumen Reservoirs. Presented at the SPE Canada Heavy Oil Technical Conference, Alberta, Canada, 7—9 June. SPE-180723. http://dx.doi.org/10.2118/180723.
Farouq Ali, S.M. and Abad, B. 1976. Bitumen Recovery From Oil Sands, Using Solvents In Conjunction With Steam. Journal of Canadian Petroleum Technology 15 (3): 80—90. PETSOC-76-03-11. http://dx.doi.org/10.2118/76-03-11.
Gaspar, A., Zellermann, E., Lababidi, S.. 2012. Characterization of Saturates, Aromatics, Resins, and Asphaltenes Heavy Crude Oil Fractions by Atmospheric Pressure Laser Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. Energy Fuels 26 (6): 3481—3487. ef3001407. http://dx.doi.org/10.1021/ef3001407.
Hama, M.Q., Wei, M., and Saleh, L.D. 2014. Updated Screening Criteria for Steam Flooding Based on Oil Field Projects Data. Presented at the Heavy Oil Conference, Calgary, Canada, 10—12 June. SPE-170031. http://dx.doi.org/10.2118/170031.
Hamm, R.A. and Ong, T.S. 1995. Enhanced Steam-Assisted Gravity Drainage: A New Horizontal Well Recovery Process for Peace River, Canada. Journal of Canadian Petroleum Technology 34 (4). PETSOC-95-04-03-P. http://dx.doi.org/10.2118/.
Hascakir, B. 2016a. Effective Extraction of High Viscosity and Low API Gravity Hydrocarbon Resources with Solvent-Steam Processes. Presented at the SPE Western Regional Meeting, Anchorage, Alaska, 23—26 May. SPE-180424. http://dx.doi.org/10.2118/180424.
Hernandez, O.E. and Farouq Ali, S.M. 1972. Oil Recovery from Athabasca Tar Sand by Miscible-Thermal Methods. Presented at the Annual Technical Meeting, Alberta, Canada, 16—19 May. PETSOC-7249. http://dx.doi.org/10.2118/7249.
Jamaluddin, A.K.M. and Vandamme, L.M. 1994. Produced Waste Management in the Canadian Petroleum Industry. Presented at the Health, Safety & Environment, Jakarta, Indonesia, 25—27 January. SPE-27133. http://dx.doi.org/10.2118/27133.
Janks, J.S. and Cadena, F. 1991. Identification and Properties of Modified Zeolites for the Removal of Benzene, Toluene, and Xylene Form Aqueous Solutions. Presented at the Annual Technical Conference and Exhibition, Dallas, Texas, 6—9 October. SPE-22833. http://dx.doi.org/10.2118/22833.
Kar, T. and Hascakir, B. 2015. The Role of Resins, Asphaltenes, and Water in Water-Oil Emulsion Breaking with Microwave Heating. Energy Fuels 29 (6): 3684—3690. http://dx.doi.org/10.1021/acs.energyfuels.5b00662.
Kar, T. and Hascakir, B. 2016. The Interaction of Asphaltenes with Solvents Water and Clays During Bitumen Extraction through Solvent-Steam Injection. Presented at the Heavy Oil Conference and Exhibition, Kuwait City, Kuwait, 6—8 December. SPE-184081. http://dx.doi.org/10.2118/184081.
Kar, T., Ovalles, C., Benson, I.P., Hascakir, B., 2017. Mobilization of Trapped Residual Oil via Secondary SAGD with Propane. Presented at the SPE Western Regional Meeting, Bakersfield, California, 23—27 April. SPE-185684. http://dx.doi.org/10.2118/185684.
Kar, T., Williamson, M., and Hascakir, B. 2013. The Role of Asphaltenes in Emulsions Formation for Steam Assisted gravity Drainage (SAGD) and Expanding Solvent-SAGD (ES-SAGD). Presented at the SPE Heavy and Extra Heavy Oil Conference, Medellin, Colombia, 24—26 September. SPE-171076. http://dx.doi.org/10.2118/171076.
Kar, T., Yeoh, J., Ovalles, C., Hascakir, B., 2015. The Impact of Asphaltene Precipitation and Clay Migration on Wettability Alteration for Steam Assisted Gravity Drainage (SAGD) and Expanding Solvent SAGD (ES-SAGD). Presented at the SPE Heavy Oil Conference, San Antonio, Texas. SPE-174439. http://dx.doi.org/10.2118/174439.
Kharrat, A.M., Zacharia, J., Cherian, V.J.. 2007. Issues with Comparing SARA Methodologies. Enery Fuels 21 (6):3618-3621. http://dx.doi.org/10.1021/ef700393a.
Kilpatrick, P.K. 2012. Water-in-Crude Oil Emulsion Stabilization: Review and Unanswered Questions. Energy Fuels 26 (7): 4017—4026. ef3003262. http://dx.doi.org/10.1021/ef3003262.
Kokal, S.L. 2005. Crude Oil Emulsions: A State-Of-The-Art Review. SPE Production & Facilities 20 (1): 5—13. SPE-77497. http://dx.doi.org/10.2118/77497.
Law, D.H.S. 2004. Disposal of Carbon Dioxide, a Greenhouse Gas, for Pressure Maintenance in a Steam-Based Thermal Process for Recovery of Heavy Oil and Bitumen. Presented at the International Thermal Operations and Heavy Oil Symposium and Western Regional Meeting, Bakersfield, California, 16—18 March. SPE-86958.
Leontaritis, K.J., Amaefule, J.O., and Charles, R.E. 1994. A Systematic Approach for the Prevention and Treatment of Formation Damage Caused by Asphaltene Deposition. SPE Production & Facilities 9 (3): 157—164. SPE-23810. http://dx.doi.org/10.2118/23810.
Morrow, A., Mukhametshina, A., Aleksandrov, D., Hascakir, 2014. Environmental Impact of Bitumen Extraction with Thermal Recovery. Presented at the SPE Heavy Oil Conference, Alberta, Canada, 10—12 June. SPE-170066. http://dx.doi.org/10.2118/170066.
Mukhametshina, A. and Hascakir, B. 2014. Bitumen Extraction by Expanding Solvent-Steam Assisted Gravity Drainage (ES-SAGD) with Asphaltene Solvents and Non-Solvents. Presented at the Heavy Oil Conference, Alberta, Canada, 10—12 June. SPE-170013. http://dx.doi.org/10.2118/170013.
Mullins, O. C. 2008. Review of the Molecular Structure and Aggregation of Asphaltenes and Petroleomics. SPE Journal 13(01): 48-57. https://doi.org/10.2118/95801-PA
Prakoso, A.A., Punase, A.A., and Hascakir, B. 2015. A Mechanistic Understanding of Asphaltene Precipitation from Varying Saturate Concentration Perspective. Presented at the SPE Latin American and Caribbean Petroleum Engineering Conference, Quito, Ecuador, 18—20 November. SPE-177280. http://dx.doi.org/10.2118/177280.
Punase, A. and Hascakir, B. 2017. Stability Determination of Asphaltenes through Dielectric Constant Measurements of Polar Oil Fractions. Energy and Fuels 31 (1): 65—72. http://dx.doi.org/10.
Shkalikov, N. V., Vasil’ev, S. G., Skirda, V. D. 2010. Peculiarities of Asphaltene Precipitation in n-alkane-oil Systems. Colloid Journal 72(01): 133-140. doi: 10.1134/S1061933X1001014X
Stape, P. and Hascakir, B. 2016. Wettability Alteration during Solvent Assisted-Steam Flooding with Asphaltenes Insoluble Solvents. Presented at the SPE Latin America and Caribbean Heavy and Extra Heavy Oil Conference, Lima, Peru, 19—20 October. SPE-181148. http://dx.doi.org/10.2118/181148.
Unal, Y., Kar, T., Mukhametshina, A.. 2015. The Impact of Clay Type on the Asphaltene Deposition during Bitumen Extraction with Steam Assisted Gravity Drainage. Presented at the International Symposium on Oilfield Chemistry, The Woodlands, Texas, 13—15 April. SPE-173795. http://dx.doi.org/10.2118/173795.
Willman, B. T., Valleroy, V. V., Runberg, G. W., Cornelius, A. J., & Powers, L. W. (1961, July 1). Laboratory Studies of Oil Recovery by Steam Injection. Society of Petroleum Engineers. doi: 10.2118/1537-G-PA
Yarranton, H.W., Sztukowski, D.M., and Urrutia, P. 2007. Effect of interfacial rheology on model emulsion coalescence. Journal of Colloid and Interface Science 310 (1): 253—259. http://dx.doi.org/10.1016/j.jcis.2007.01.071.