Advanced Eor Foam in Naturally Fractured Carbonates Reservoirs : Optimal Balance Between Foam and Interfacial Tension Properties
- Eloïse Chevallier (Solvay) | Sarah Bouquet (IFP Energies Nouvelles) | Nicolas Gland (IFPEN) | Frédéric Douarche (IFPEN) | Guillaume Batôt (IFPEN)
- Document ID
- Society of Petroleum Engineers
- SPE Middle East Oil and Gas Show and Conference, 18-21 March, Manama, Bahrain
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Petroleum Engineers
- 5.5 Reservoir Simulation, 5.3.6 Chemical Flooding Methods (e.g., Polymer, Solvent, Nitrogen, Immiscible CO2, Surfactant, Vapex), 5 Reservoir Desciption & Dynamics, 5.4 Improved and Enhanced Recovery, 5.5.2 Core Analysis, 2.5.2 Fracturing Materials (Fluids, Proppant), 2 Well completion, 5.8 Unconventional and Complex Reservoirs, 2.4 Hydraulic Fracturing, 5.4 Improved and Enhanced Recovery, 5.8.7 Carbonate Reservoir
- Foam, Oil-wettability, Fractures, Surfactant, Carbonates
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- 143 since 2007
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In naturally fractured carbonate reservoirs, Gas Oil Gravity Drainage processes (GOGD) are successfully implemented but oil recovery is limited by a slow kinetics. However a gas EOR process represents a promising alternative to boost this oil production rate. Nevertheless the design of this process should address several technical challenges: the typically unfavorable wettability of the matrix (intermediate to strongly oil-wet), the densely connected fracture network and the high contrast of fracture-to-matrix permeability.
We propose here the injection of a advanced EOR foam with reduced interfacial tension. The foam flow in the fracture creates an important viscous drive leading to a pressure gradient, which increases the oil recovery dynamics compared to GOGD. Besides, the reduced interfacial tension (IFT) between crude oil and aqueous phase allows the aqueous phase to enter the matrix despite the unfavorable wettability.
In this paper, we demonstrate that a balance exist between IFT and foam strength performances to optimize the process. Three foam formulations are optimized with very different profiles in terms of IFT and foam performances. For their design, priority is given either to ultra-low IFT values (10-3mN/m) or to a strong foam with larger IFT (0.35mN/m) or to a balance between the two first formulations (0.03mN/m). Foams are evidenced as intrinsically less stable in ultra-low IFT conditions: apparent viscosity (in porous media) in contact with oil is respectively enhanced by a factor 40 when IFT rises from 10−3 to 10−1mN/m. Based on sandpack and coreflood experiments, we recommend an IFT in the order of 10−1 mN/mas a balance between the viscous drive in fracture and an efficient aqueous phase imbibition in the oil-wet matrix. Simulation work supports this experimental conclusion: the common target of IFT in the order of 10−3 mN/m determined by capillary desaturation curves in SP flooding can be adjusted to a higher IFT value, which can be deduced from the wettability of the reservoir.
To ensure an accelerated oil recovery in naturally fractured carbonate reservoirs, we recommend the design of a low-IFT foam formulation with revised IFT performances compared to a classical Surfactant-Polymer process targeting residual oil. Indeed, the final process is likely more efficient if the target of IFT is defined by wettability requirements rather than residual oil desaturation. This article gives the target formulation parameters which arise from the mechanisms at play (viscous drive and imbibition in oil-wet matrix), and are realistically achieved with industrial surfactants.
|File Size||1 MB||Number of Pages||15|
Batôt, G., M. Fleury, E. Rosenberg, L. Nabzar, and M. Chabert. 2016. " Foam Propagation in Rock Samples: Impact of Oil and Flow Caracterization ". In. Society of Petroleum Engineers. https://doi.org/10.2118/179855-MS.
Cantat, Isabelle, Sylvie Cohen-Addad, Florence Elias, François Graner, Reinhard Höhler, Olivier Pitois, Florence Rouyer, Arnaud Saint-Jalmes, and Ruth Flatman. 2013. Foams: Structure and Dynamics. Édité par Simon Cox. Oxford University Press. https://doi.org/10.1093/acprof:oso/9780199662890.001.0001.
Chabert, M., L. Nabzar, M. Morvan, S. Rohaida Mohd Shafian, P. Abdul Hamid, M. Faizal Sedaralit, and N. Darman. 2013. " An Integrated Laboratory Workflow for the Design of a Foam Pilot in Malaysia ". In. https://doi.org/10.3997/2214-4609.20142648.
Chevallier, Eloise, Max Chabert, Serge Gautier, Hamid Ghafram, Saja Khaburi, and Abdullah Alkindi. 2018. " Design of a Combined Foam EOR Process for a Naturally Fractured Reservoir ". In. Society of Petroleum Engineers. https://doi.org/10.2118/190363-MS.
Chevallier, Eloise, Oceane Tchamba, Max Chabert, Samir Bekri, Frederic Martin, and Serge Gautier. 2015. " Foams with Ultra-Low Interfacial Tensions for an Efficient EOR Process in Fractured Reservoirs ". In. Society of Petroleum Engineers. https://doi.org/10.2118/174658-MS.
Denkov, Nikolai D. 2004. " Mechanisms of Foam Destruction by Oil-Based Antifoams". Langmuir 20 (22): 9463–9505. https://doi.org/10.1021/la049676o.
Dong, Pengfei, Maura Puerto, Kun Ma, Khalid Mateen, Guangwei Ren, Gilles Bourdarot, Danielle Morel, Sibani Lisa Biswal, and George Hirasaki. 2018. " Ultralow-Interfacial-Tension Foam Injection Strategy Investigation in High Temperature Ultra-High Salinity Fractured Carbonate Reservoirs ". In. Society of Petroleum Engineers. https://doi.org/10.2118/190259-MS.
Dong, Pengfei, Maura Puerto, Kun Ma, Khalid Mateen, Guangwei Ren, Gilles Bourdarot, Danielle Morel, Maurice Bourrel, Sibani Lisa Biswal, and George Hirasaki. 2017. " Low-Interfacial-Tension Foaming System for Enhanced Oil Recovery in Highly Heterogeneous/Fractured Carbonate Reservoirs ". In. Society of Petroleum Engineers. https://doi.org/10.2118/184569-MS.
Lachaise, J., T. Breul, A. Graciaa, G. Marion, A. Monsalve, and J.L. Salager. 1990. " Foaming Properties of Surfactant-Oil-Water Systems in the Neighbourhood of Optimum Formulation ". Journal of Dispersion Science and Technology 11 (5): 443–53. https://doi.org/10.1080/01932699008943270.
Li, Robert Feng, George J. Hirasaki, Clarence A. Miller, and Shehadeh Masalmeh. 2011. " Wettability Alteration and Foam Mobility Control in a Layered 2-D Heterogeneous System". In. Society of Petroleum Engineers. https://doi.org/10.2118/141462-MS.
Sheng, James. 2013. " A Comprehensive Review of Alkaline-Surfactant-Polymer (ASP) Flooding ". In. Society of Petroleum Engineers. https://doi.org/10.2118/165358-MS.
Srivastava, Mayank, Jieyuan Zhang, Quoc Phuc Nguyen, and Gary A. Pope. 2009. " A Systematic Study of Alkali Surfactant Gas Injection as an Enhanced Oil Recovery Technique ". In. Society of Petroleum Engineers. https://doi.org/10.2118/124752-MS.
Tabary, Rene, Frederic Douarche, Brigitte Bazin, Pierre Lemouzy, Patrick Moreau, and Mikel Morvan. 2012. " Design of a Surfactant/Polymer Process in a Hard Brine Context: A Case Study Applied to Bramberge Reservoir". In. Society of Petroleum Engineers. https://doi.org/10.2118/155106-MS.
Verlaan, Marco, and Paulus Maria Boerrigter. 2006. " Miscible Gas-Oil Gravity Drainage". In. Society of Petroleum Engineers. https://doi.org/10.2118/103990-MS.
Wang, Demin, Jiecheng Cheng, Zhenyu Yang, Li Qun, Wenxiang Wu, and Huiyu Yu. 2001a. " Successful Field Test of the First Ultra-Low Interfacial Tension Foam Flood ". In. Society of Petroleum Engineers. https://doi.org/10.2118/72147-MS.
Wang Demin, Cheng Jiecheng, Yang Zhenyu, Qun Li, Wu Wenxiang, Yu Huiyu. 2001b. " Successful Field Test of the First Ultra-Low Interfacial Tension Foam Flood ". In. Society of Petroleum Engineers. https://doi.org/10.2118/72147-MS.
Zhang, Chengli, Peng Wang, Guoliang Song, Guodong Qu, and Jialun Liu. 2018. " Optimization and Evaluation of Binary Composite Foam System with Low Interfacial Tension in Low Permeability Fractured Reservoir with High Salinity ". Journal of Petroleum Science and Engineering 160 (janvier): 247–57. https://doi.org/10.1016/j.petrol.2017.10.047.
Zhang, Yunxiang, Xiangan Yue, Jianxia Dong, and Liu Yu. 2000. " New and Effective Foam Flooding To Recover Oil in Heterogeneous Reservoir ". In. Society of Petroleum Engineers. https://doi.org/10.2118/59367-MS.