Efficacy of Synthetic Hydrophobic Associative Tetrapolymers for Improved Recovery of Viscous Oil in Sandpack Model

This study examined the suitability of hydrophobic associative tetrapolymers (HATs) for enhanced oil recovery through sandpack flooding. Two novel hydrophobic associative tetrapolymers, herein designated as HAT-1 and HAT-2 were synthesised via free radical polymerisation and the structures were confirmed by Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (1H NMR). HAT-1 composed of acrylamide - hydroxyethyl methacrylate - N- vinyl pyrrolidone - N,N-dimethyl acrylamide and HAT-2 consisted of acrylamide - sodium 2-acrylamido-2-methyl propane sulphonate - diallyldimethylammonium chloride - lauryl methacrylate. Comparative tests were carried out under laboratory conditions on the oil displacement efficiencies of the two HAT polymers. The incremental oil recovered using polymer HAT-1 and HAT-2 injection after water flooding were 33.7% and 36.2%, respectively. Combining the oil recovered from water flooding followed by polymer flooding both scenarios, the cumulative recovered using HAT-2, 83.3 % was relatively higher than that of HAT-1, 74.4%. These values are relatively high from the economic perspective. Based on brine viscosity enhancement, mobility ratio reduction and additional oil recovery, HAT-2 polymer exhibited a relatively higher potential to improve oil recovery for reservoirs with characteristics similar to the experimental conditions for this work.

[1] Saboorian-Jooybari, H.; Dejam, M.; Chen, Z. Half-Century of Heavy Oil Polymer Flooding from Laboratory Core Floods to Pilot Tests and Field Applications. Paper SPE 174402, SPE Canada Heavy Oil Technical Conference At: Calgary, Alberta, Canada June 2015. https://doi.org/10.2118/174402-MS
[2] Fink, J.K. Enhanced Oil Recovery. In Petroleum Engineer’s Guide to Oil Field Chemicals and Fluids, 3rd ed.; Elsevier, GPP: New York, 2021; pp 643–731. https://doi.org/10.1016/B978-0-323-85438-2.00016-5
[3]Sorbie, K.S. Polymer-improved oil recovery; Springer Science & Business Media, Nov 2013.
[4] Ahmadi, Y.; Mohammadi, M.; Sedighi, M. Introduction to chemical enhanced oil recovery. In Enhanced Oil Recovery Series, Chemical Methods; Hemmati-Sarapardeh, A.; Schaffie, M.; Ranjbar, M.; Dong, M.; Li, Z., Eds; Gulf Professional Publishing, 2022; pp 1-32. https://doi.org/10.1016/B978-0-12-821931-7.00002-X
[5] Salehi, M.M.; Hekmatzadeh, A.; Sajjadian, V.A.; Masoumi, M. Simulation of Polymer Flooding in One of the Iranian Oil Fields. Egypt. J. Pet. 2017, 26, 325–330. https://doi.org/10.1016/j.ejpe.2016.05.001
[6] Abidin, A.Z.; Puspasari, T.; Nugroho, W.A. Polymers for Enhanced Oil Recovery Technology. Procedia Chem. 2012, 4, 11–16. https://doi.org/10.1016/j.proche.2012.06.002
[7] Zhao, D.Z.; Wang, J.; Gates, I.D. An Evaluation of Enhanced Oil Recovery Strategies for a Heavy Oil Reservoir after Cold Production with Sand. Int. J. Energy Res. 2015, 39, 1355–1365. https://doi.org/10.1002/er.3337
[8] Beliveau, D. Waterflooding Viscous Oil Reservoirs. SPE Reserv. Eval. Eng. 2009, 12, 689–701. https://doi.org/10.2118/113132-PA
[9] Mai, A. Mechanisms of Heavy Oil Recovery by Waterflooding. PhD Thesis, University of Calgary, 2008.
[10] Wang, F.; Xu, H.; Liu, Y.; Jiang, Y.; Wu, C. Experimental Study on the Enhanced Oil Recovery Mechanism of an Ordinary Heavy Oil Field by Polymer Flooding. ACS Omega 2023, 8, 14089–14096. https://doi.org/10.1021/acsomega.2c08084
[11] Wever, D.A.Z.; Picchioni, F.; Broekhuis, A.A. Polymers for Enhanced Oil Recovery: A Paradigm for Structure–Property Relationship in Aqueous Solution. Prog. Polym. Sci. 2011, 36, 1558–1628. https://doi.org/10.1016/j.progpolymsci.2011.05.006
[12] Pablo, M.A.; Marrochi, R.L.; Romero, O.J. Effect of Polymer Injection on the Mobility Ratio and Oil Recovery. Paper presented at the SPE Heavy Oil Conference and Exhibition, Kuwait City, Kuwait, December 2011. https://doi.org/10.2118/148875-MS
[13] Jouenne, S. Polymer Flooding in High Temperature, High Salinity Conditions: Selection of Polymer Type and Polymer Chemistry, Thermal Stability. J. Pet. Sci. Eng. 2020, 195, 107545. https://doi.org/10.1016/j.petrol.2020.107545
[14] Castro, R.H.; Llanos, S.; Rodríguez, J.; Quintero, H.I.; Manrique, E. Polymers for EOR Application in High Temperature and High Viscosity Oils: Rock–Fluid Behavior. Energies 2020, 13, 5944. https://doi.org/10.3390/en13225944
[15] Yang, B.; Mao, J.; Zhao, J.; Shao, Y.; Zhang, Y.; Zhang, Z.; Lu, Q. Improving the Thermal Stability of Hydrophobic Associative Polymer Aqueous Solution Using a “Triple-Protection” Strategy. Polymers 2019, 11, 949. https://doi.org/10.3390/polym11060949
[16] Zhao, T.; Guo, Q.; Li, S.; Sun, W. Synthesis and Solution Properties Evaluation of AATA Quaternary Copolymer. Silicon 2023, 15, 2067–2082. https://doi.org/10.1007/s12633-022-02160-1
[17] Pinho de Aguiar, K.L.N.; Palermo, L.C.M.; Mansur, C.R.E. Polymer Viscosifier Systems with Potential Application for Enhanced Oil Recovery: A Review. Oil & Gas Science and Technology – Rev. IFP Energies nouvelles 2021, 76, 65. https://doi.org/10.2516/ogst/2021044
[18] Speight, J.G. Exploration and General Methods for Oil Recovery. In Enhanced Recovery Methods for Heavy Oil and Tar Sands; Speight, J.G.; Gulf Publishing Company, 2009, pp. 133-184. https://doi.org/10.1016/B978-1-933762-25-8.50010-9
[19] Ali, K.; Vipulanandan, C.; Richardson, D. Salt (NaCl) Contamination on the Resistivity and Plastic Viscosity of a Bentonite Drilling Mud. Proceedings. CIGMAT-2013 Conference & Exhibition.
[20] de Melo, M.A.; Lucas, E.F. Characterization and Selection of Polymer for Use in Future Research on Improved Oil Recovery. Chem. Chem. Technol. 2008, 2, 295–303. https://doi.org/10.23939/chcht02.04.295
[21] Sastry, N.V.; Dave, P.N.; Valand, M.K. Dilute Solution Behaviour of Polyacrylamides in Aqueous Media. Eur. Polym. J. 1999, 35, 517–525. https://doi.org/10.1016/S0014-3057(98)00152-9
[22] Sydansk, R.D.; Romero-Zerón, L. Reservoir Conformance Improvement; Society of Petroleum Engineers, 2011.
[23] Standard Handbook of Petroleum & Natural Gas Engineering (Second edition); Lyons, W.; Plisga, B.S., Eds; Elsevier Inc.: Burlington, MA, 2005.
[24] Nagre, D.R.; Zhao, L.; Frimpong, I.K. Polymer-FLR for Mud Fluid Loss Reduction. Chem. Chem. Technol. 2018, 12, 79–85, https://doi.org/10.23939/chcht12.01.079
[25] Nagre, R.D.; Owusu, P.A.; Tchameni, A.P.; Azanu, D.; Kyei, S.K. Synthesis and Assessment of a Hydrophobically Associating Heteropolymer in Water-Based Mud. Chem. Pap. 2021, 75, 1197–1209. https://doi.org/10.1007/s11696-020-01379-9
[26] Lucas, E.F., Mansur, C.R.E.; Spinelli, L.; Queirós, Y.G.C. Polymer Science Applied to Petroleum Production. Pure Appl. Chem. 2009, 81, 473–494. https://doi.org/10.1351/PAC-CON-08-07-21
[27] Albonico, P.; Lockhart, T.P. pH Effects on the Solubility of Polyacrylamides in Hard Brines. J. Appl. Polym. Sci. 1995, 55, 69–73. https://doi.org/10.1002/app.1995.070550107
[28] Ma, R.; Jia, L.; Zhang, H.; Cao, F.; Shao, J.; Zhang, J.; Yan, S.; Xu, J. Structural Analysis of Petroleum Acids in Highly Acidic Crude Oil and Deacidification Using Organic Amines. Fuel 2024, 360, 130117. https://doi.org/10.1016/j.fuel.2023.130117
[29] Zhang, X.; Li, B.; Pan, F.; Su, X.; Feng, Y. Enhancing Oil Recovery from Low-Permeability Reservoirs with a Thermoviscosifying Water-Soluble Polymer. Molecules 2021, 26, 7468. https://doi.org/10.3390/ molecules26247468
[30] Wang, J.; Dong, M. A Laboratory Study of Polymer Flooding for Improving Heavy Oil Recovery. Paper 2007-178 presented at the Canadian international petroleum conference, Calgary, Canada, 12–14 June 2007.
[31] Wassmuth, F.R.; Green, K.; Arnold, W.; Cameron, N. Polymer Flood Application to Improve Heavy Oil Recovery at East Bodo. J. Can. Pet. Technol. 2009, 48, 55–61. https://doi.org/10.2118/09-02-55
[32] Zhang, Y.; Huang, S.; Luo, P. Coupling Immiscible CO2 Technology and Polymer Injection to Maximize EOR Performance for Heavy Oil. J. Can. Pet. Technol. 2010, 49, 27–33. https://doi.org/10.2118/137048-PA
[33] Wang, J.; Dong, M. Optimum Effective Viscosity of Polymer Solution for Improving Heavy Oil Recovery. J. Petrol. Sci. Eng. 2009, 67, 155–158. https://doi.org/10.1016/j.petrol.2009.05.007
[34] Mohsenatabar Firozjaii, A.; Saghafi, H.R. Review on Chemical Enhanced Oil Recovery Using Polymer Flooding: Fundamentals, Experimental and Numerical Simulation. Petroleum 2020, 6, 115–122. https://doi.org/10.1016/j.petlm.2019.09.003
[35] Gbadamosi, A.; Patil, S.; Kamal, M.S.; Adewunmi, A.A.; Yusuff, A.S.; Agi, A.; Oseh, J. Application of Polymers for Chemical Enhanced Oil Recovery: A Review. Polymers (Basel) 2022, 14, 1433. https://doi.org/10.3390/polym14071433
[36] Mirzaie Yegane, M.; Boukany, P. E.; Zitha, P. Fundamentals and Recent Progress in the Flow of Water-Soluble Polymers in Porous Media for Enhanced Oil Recovery. Energies 2022, 15, 8575. https://doi.org/10.3390/en15228575