Visual Analysis of SAGD with Chemical Additives
- Jingjing Huang (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology and University of Alberta) | Tayfun Babadagli (University of Alberta)
- Document ID
- Society of Petroleum Engineers
- SPE Kuwait Oil & Gas Show and Conference, 13-16 October, Mishref, Kuwait
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Petroleum Engineers
- Hele-Shaw cell., sweep efficiency and emulsification, New generation chemical additives, oil displacement mechanism, steam injection
- 2 in the last 30 days
- 147 since 2007
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SAGD (steam assisted gravity drainage) has been proven as an effective technology to enhance heavy oil/bitumen recovery. The main shortcoming of this method is its inefficiency, a result of high water and energy consumption. As a solution to SAGD efficiency improvement, we propose the addition of chemicals resulting in higher recovery and reduced steam consumption. The objective of this paper is to screen new generation chemicals as additives and study the mechanisms and optimum injection strategies. This screening was achieved through Hele-Shaw type macroscopic visual experiments.
We previously screened a wide variety of chemical additives (Bruns and Babadagli 2017, 2018) for steam flooding. As a continuation of this work, these chemicals were tested for SAGD conditions using a new visual experimental design where the optimal injection strategies were identified, eventually providing a reference for the selection of chemical additives for field applications.
11 conventional and new generation chemical additives (heptane, biodiesel, DME, LTS-18, Tween 80, Span 80, Novelfroth 190, ionic liquid (BMMMIM BF4), silicon dioxide nanoparticle, DES9, and DES11) were selected based on both their strong thermal stability and enhanced oil recovery capability. The recovery improvement mechanisms for the different chemical additives and different injection strategies were identified through flow characteristics, emulsifying ability, viscosity reduction capability, and wettability alteration. Simultaneously, the mechanisms were studied from a macro perspective via analyzing areal sweep efficiency and microscopic oil displacement efficiency together with observing the images acquired during the process.
Three different injection strategies were applied for each chemical: (1) chemicals were injected at the beginning, (2) in the middle, and (3) at the end of the steam injection. The chemical additives played different roles in recovery improvement, and different chemical addition strategies yielded different mechanisms. Heptane exhibited extraordinary characteristics with maximum "steam saving" (34.52%) when the middle injection strategy was applied and maximum ultimate oil recovery (64.75%) was obtained for the end injection strategy due to the ability to reduce the viscosity of heavy oil by dissolving around the chamber edge. Steamflooding with Novelfroth 190 showed an excellent performance for the middle and end injection strategies due to its ability to develop rapid oil drainage "channels". The addition of surfactant LST-18 presented the ability to improve the EOR by forming emulsions. Additionally, the distributions of the steam chamber in the Hele-Shaw cell were different due to the changed flow characteristics when the same chemical additive was injected at different times, thus showing the ability to reduce viscosity and form emulsions with different strengths.
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Abdelkareem, A. H., Kimura, S., Kiwata, T.. 2009. Experimental Study on Oscillatory Natural Convection in a Hele-Shaw Cell due to Unstably Heated Side. Transport in Porous Media 76(3): 363–375. https://doi.org/10.1007/s11242-008-9251-7.
Al-Bahlani, A.-M. and Babadagli, T. 2009. SAGD laboratory experimental and numerical simulation studies: A review of current status and future issues. J. Pet. Sci. Eng. 68(3-4): 135–150. https://doi.org/10.1016/j.petrol.2009.06.011.
Argüelles-Vivas, F. J. and Babadagli, T. 2016. Pore-Scale Investigations on the Dynamics of Gravity-Driven Steam-Displacement Process for Heavy-Oil Recovery and Development of Residual Oil Saturation: A 2D Visual Analysis. SPE J. 21(6). SPE-181753-PA. https://doi.org/10.2118/181753-PA.
Azom, P. N. and Srinivasan, S. 2009. Mechanistic Modeling of Emulsion Formation and Heat Transfer During the Steam-Assisted Gravity Drainage (SAGD) Process. SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, 4-7 October. SPE-124930-MS. https://doi.org/10.2118/124930-MS.
Butler, R. M. and Stephens, D. J. 1981. The Gravity Drainage of Steam-heated Heavy Oil to Parallel Horizontal Wells. J. Cad. Pet. Technol. 20(2). PETSOC-81-02-07. https://doi.org/10.2118/81-02-07.
Butler, R. M, Mcnab, G.S., and Lo, H.Y. 1982. Theoretical Studies on the Gravity Drainage of Heavy Oil During In Situ Steam Heating. Cad. J. Chem. Eng. 59(4): 455–460. https://doi.org/10.1002/cjce.5450590407.
Butler, R. M. and Yee, C. T. 2002. Progress in the In Situ Recovery of Heavy Oils and Bitumen. J. Cad. Pet. Technol. 41(1). PETSOC-02-01-02. https://doi.org/10.2118/02-01-02.
Butler, R. 1998. SAGD Comes of AGE! J. Cad. Pet. Technol. 37(7). PETSOC-98-07-DA. https://doi.org/10.2118/98-07-DA.
Bosch, R., Axcell, E., Little, V.. 2004. A novel approach for resolving reverse emulsions in SAGD production systems. Cad. J. Chem. Eng. 82(4): 836–839. https://doi.org/10.1002/cjce.5450820424.
Bruns, F. and Babadagli, T. 2017. Recovery Improvement of Gravity Driven Steam Applications Using New Generation Chemical Additives. SPE Western Regional Meeting, Bakersfield, California, 23-27 April. SPE-185714-MS. https://doi.org/10.2118/185714-MS.
Bruns, F. and Babadagli, T. 2018. Recovery Improvement by Chemical Additives to Steam Injection: Identifying Underlying Mechanisms Through Core and Visual Experiments. SPE Western Regional Meeting, Garden Grove, California, 22-26 April. SPE-190083-MS. https://doi.org/10.2118/190083-MS.
Chen, Q., Gerritsen, M. G., and Kovscek, A. R. 2010. Improving Steam-Assisted Gravity Drainage Using Mobility Control Foams: Foam Assisted-SAGD (FA-SAGD). SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, 24-28 April. SPE-129847-MS. https://doi.org/10.2118/129847-MS.
Deng, X. 2005. Recovery Performance and Economics of Steam/Propane Hybrid Process. SPE International Thermal Operations and Heavy Oil Symposium, Calgary, Alberta, 1-3 November. SPE-97760-MS. https://doi.org/10.2118/97760-MS.
Egboka, C. I. and Yang, D. T. 2011. Performance of a SAGD Process with Addition of CO2, C3H8, and C4H10 in a Heavy Oil Reservoir. SPE Heavy Oil Conference and Exhibition, Kuwait City, Kuwait, 12-14 December. SPE-150170-MS. https://doi.org/10.2118/150170-MS.
Ezeuko, C. C., Wang, J. Y. J., and Gates, I. D. 2012. Investigation of Emulsion Flow in SAGD and ES-SAGD. SPE Heavy Oil Conference Canada, Calgary, Alberta, 12-14 June. SPE-157830-MS. https://doi.org/10.2118/157830-MS.
Frauenfeld, T., Lillico, D., Jossy, C.. 1996. Evaluation of Partially Miscible Processes For Alberta Heavy Oil Reservoirs. Annual Technical Meeting, Calgary, Alberta, June 10-12. PETSOC-96-101. https://doi.org/10.2118/96-101.
Frauenfeld, T. W., Jossy, C., Bleile, J.. 2009. Experimental and Economic Analysis of the Thermal Solvent and Hybrid Solvent Processes. J. Cad. Pet. Technol. 48(11). SPE-130445-PA. https://doi.org/10.2118/130445-PA.
Gates, I. D. and Larter, S. R. 2014. Energy efficiency and emissions intensity of SAGD. Fuel 115: 706–713. https://doi.org/10.1016/j.fuel.2013.07.073.
Gotawala D.R. and Gates, I.D. 2008. Steam fingering at the edge of a steam chamber in a heavy oil reservoir. Cad. J. Chem. Eng. 86(6):1011–1022. https://doi.org/10.1002/cjce.20117.
Greenkorn, R. A., Haring, R. E., Jahns, H. O.. 1964. Flow in Heterogeneous Hele-Shaw Models. SPE J. 4(4). SPE-999-PA. https://doi.org/10.2118/999-PA.
Hele-Shaw, H. S. 1898a. The flow of water. Nature 58: 34–36. https://doi.org/10.1038/058034a0.
Huang, H., Babadagli, T., Chen, X.. 2019. Performance Comparison of Novel Chemical Agents in Improving Oil Recovery from Tight Sands Through Spontaneous Imbibition. SPE International Conference on Oilfield Chemistry, Galveston, Texas, 8-9 April. SPE-193553-MS. https://doi.org/10.2118/193553-MS.
Ivory, J., Frauenfeld, T., and Jossy, C. 2010. Thermal Solvent Reflux and Thermal Solvent Hybrid Experiments. J. Cad. Pet. Technol. 49(2). SPE-133202-PA. https://doi.org/10.2118/133202-PA.
Izuchukwu, O., Ayodele, T. O., Abdullahi, G. S. B.. 2018. Visualization of Heavy Oil Recovery Processes Using Hele-Shaw Cell. SPE Nigeria Annual International Conference and Exhibition, Lagos, Nigeria, 6-8 August. SPE-193502-MS. https://doi.org/10.2118/193502-MS.
Li, R., Wang, D., and Chen, Z. 2017. Chemical Additives and Foam Assisted SAGD Model Development. SPE Canada Heavy Oil Technical Conference, Calgary, Alberta, 15-16 February. SPE-185015-MS. https://doi.org/10.2118/185015-MS.
Mohammadzadeh, O. and Chatzis, I. 2009. Pore-level Investigation of Heavy Oil Recovery using Steam Assisted Gravity Drainage (SAGD). International Petroleum Technology Conference, Doha, Qatar, 7-9 December. IPTC-13403-MS. https://doi.org/10.2523/IPTC-13403-MS.
Nasr, T. N., Beaulieu, G., Golbeck, H., & Heck, G. 2003. Novel Expanding Solvent-SAGD Process "ES-SAGD." Petroleum Society of Canada. doi:10.2118/03-01-TN
Noik, C., Dalmazzone, C. S. H., Goulay, C.. 2005. Characterisation and Emulsion Behaviour of Athabasca Extra Heavy Oil Produced by SAGD. SPE International Thermal Operations and Heavy Oil Symposium, Calgary, Alberta, 1-3 November. SPE-97748-MS. https://doi.org/10.2118/97748-MS.
Pratama, R. A. and Babadagli, T. 2019. Effect of Temperature, Phase Change, and Chemical Additives on Wettability Alteration During Steam Applications in Sands and Carbonates. SPE Res. Eval. Eng. Preprint. SPE-191188-PA. https://doi.org/10.2118/191188-PA.
Sasaki, K., Akibayashi, S., Yazawa, N.. 2001. Numerical And Experimental Modelling of the Steam-assisted Gravity Drainage (SAGD). J. Cad. Pet. Technol. 40(1). PETSOC-01-01-04. https://doi.org/10.2118/01-01-04.
Sasaki, K., Akibayashi, S., Yazawa, N.. 2001. Experimental Modeling of the SAGD Process - Enhancing SAGD Performance with Periodic Stimulation of the Horizontal Producer. SPE J. 6(1). SPE-69742-PA. https://doi.org/10.2118/69742-PA.
Schlichting, H. and Gersten, K. 1979. Boundary Layer Theory, 7th edition. New York, New York: Springer. https://doi.org/10.1007/978-3-662-52919-5.
Singh, R. and Mohanty, K. K. 2017. Nanoparticle-Stabilized Foams for High-Temperature, High-Salinity Oil Reservoirs. SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 9-11 October. SPE-187165-MS. https://doi.org/10.2118/187165-MS.
Zhou, Z. Y. G. and Cheng, L. S. 2017. Surfactant-Steam-Noncondensible Gas-Foam Modeling for SAGD Process in the Heavy Oil Recovery. EAGE. https://doi.org/10.3997/2214-4609.201700350.