Rheology of a New Sulfonic Associative Polymer in Porous Media
- Randall S. Seright (New Mexico Tech) | Tianguang Fan (New Mexico Tech) | Kathryn Wavrik (New Mexico Tech) | Hao Wan (New Mexico Tech) | Nicolas Gaillard (SNF Floerger) | Cédrick Favéro (SNF Floerger)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- December 2011
- Document Type
- Journal Paper
- 726 - 734
- 2011. Society of Petroleum Engineers
- 5.3 Reservoir Fluid Dynamics
- Associative polymer, Polymer flooding, Rheology in porous media
- 9 in the last 30 days
- 1,064 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 12.00|
|SPE Non-Member Price:||USD 35.00|
For hydrophobically associative polymers, incorporating a small fraction of hydrophobic monomer into a hydrolyzed polyacrylamide (HPAM) polymer can promote intermolecular associations and thereby enhance viscosities and resistance factors. In this paper, we investigate the behavior of a new associative polymer in porous media. The tetra-polymer has low hydrophobic-monomer content and a molecular weight (Mw) of 12-17 million g/mol. Total anionic content is 15-25 mol%, including a few percent of a sulfonic monomer. This polymer is compared with a conventional HPAM with 18-20 million g/mol Mw and 35-40% anionic content. Rheological properties (viscosity vs. concentration; and shear rate and elastic and loss moduli vs. frequency) were similar for the two polymers [in a 2.52% total dissolved solids (TDS) brine at 25°C]. For both polymers in cores with permeabilities from 300 to 13,000 md, no face plugging or internal-filter-cake formation was observed, and resistance factors correlated well using the capillary-bundle parameter. For the HPAM polymer in these cores, low-flux resistance factors were consistent with low-shear-rate viscosities. In contrast, over the same permeability range, the associative polymer provided low-flux resistance factors that were two to three times the values expected from viscosities. Moderate shear degradation did not eliminate this effect--nor did flow through a few feet of porous rock. Propagation experiments in long cores (up to 157 cm) suggest that the unexpectedly high resistance factors could propagate deep into a reservoir--thereby providing enhanced displacement compared with conventional HPAM polymers. Compared with HPAM, the new polymer shows a significantly higher level of shear thinning at low fluxes and a lower degree of shear thickening at high fluxes.
|File Size||1 MB||Number of Pages||9|
Argillier, J.-F., Audibert-Hayet, A., Lecourtier, J., Moan, M., and Rousseau, L. 1996. Solution and adsorption properties of hydrophobicallyassociating water-soluble polyacrylamides. Colloids Surf., A 113 (3): 247-257. http://dx.doi.org/10.1016/0927-7757(96)03575-3.
Bock, J., Valint, P.L., Pace, S.J., and Gardner, G. 1987. Enhanced oilrecovery with hydrophobically associating polymers containing sulfonatefunctionality. US Patent No. 4,702,319.
Bock, J., Valint, P.L., Pace, S.J., Siano, D.B., Schulz, D.N., and Turner, S.R. 1988. Hydrophobically Associating Polymers. In Water-SolublePolymers for Petroleum Recovery, ed. G.A. Stahl and D.N. Schulz, 147-160.New York City: Plenum Press.
Buchgraber, M., Clements, T., Castanier, L.M., and Kovseck, A.R. 2009.The Displacement of Viscous Oil by Associative Polymer Solutions. Paper SPE122400 presented at the SPE Annual Technical Conference and Exhibition, NewOrleans, 4-7 October. http://dx.doi.org/10.2118/122400-MS.
Dong, L. and Wang, B. 1995. Hydrophobically Associating Terpolymer and itsComplex With a Stabilizer in Brine for Enhanced Oil Recovery. Paper SPE 29007presented at the SPE International Symposium on Oilfield Chemistry, SanAntonio, Texas, USA, 14-17 February. http://dx.doi.org/10.2118/29007-MS.
Dupuis, G., Rousseau, D., Tabary, R., and Grassl, B. 2011. Flow ofHydrophobically Modified Water-Soluble-Polymer Solutions in Porous Media: NewExperimental Insights in the Diluted Regime. SPE J. 16 (1):43-54. SPE-129884-PA. http://dx.doi.org/10.2118/129884-PA.
Eoff, L., Dalrymple, D., and Reddy, B.R. 2005. Development ofAssociative Polymer Technology for Acid Diversion in Sandstone and CarbonateLithology. SPE Prod & Fac 20 (3): 250-256.SPE-89413-PA. http://dx.doi.org/10.2118/89413-PA.
Evani, S. 1984. Water-dispersible hydrophobic thickening agent. US PatentNo. 4,432,881.
Evani, S. 1989. Enhanced oil recovery process using a hydrophobicassociative composition containing a hydrophilic/hydrophobic polymer. US PatentNo. 4,814,096.
Gaillard, N. and Favero, C. 2010. High molecular weight associativeamphoteric polymers and uses thereof. US Patent No. 7,700,702.
Kujawa, P., Audibert-Hayet, A., Selb, J., and Candau, F. 2004. RheologicalProperties of Multisticker Associative Polyelectrolytes in Semidilute AqueousSolutions. J. Polym. Sci., Part B: Polym. Phys. 42 (9):1640-1655.
Lu, H., Feng, Y., and Huang, Z. 2008. Association and effective hydrodynamicthickness of hydrophobically associating polyacrylamide through porous media.J. Appl. Polym. Sci. 110 (3): 1837-1843. http://dx.doi.org/10.1002/app.28596.
Maia, A.M.S., Borsali, R., and Balaban, R.C. 2009. Comparison between apolyacrylamide and a hydrophobically modified polyacrylamide flood in asandstone core. Mater. Sci. Eng., C 29 (2): 505-509. http://dx.doi.org/10.1016/j.msec.2008.09.018.
McCormick, C.L. and Johnson, C.B. 1988. Structurally Tailored Macromoleculesfor Mobility Control in Enhanced Oil Recovery. In Water-Soluble Polymers forPetroleum Recovery, ed. G.A. Stahl and D.N. Schulz, 161-180. New York City:Plenum Press.
Seright, R.S. 2009. Use of Polymers to Recover Viscous Oil fromUnconventional Reservoirs. First Annual Report, DOE Contract No. DE-NT0006555,U.S. Department of Energy, Washington, DC (October 2009).
Seright, R.S. 2010. Use of Polymers to Recover Viscous Oil fromUnconventional Reservoirs. Second Annual Report, DOE Contract No. DE-NT0006555,US Department of Energy, Washington, DC (October 2010).
Seright, R.S., Fan, T., Wavrik, K., and de Carvalho Balaban, R. 2011. NewInsights Into Polymer Rheology in Porous Media. SPE J. 16(1): 35-42. SPE-129200-PA. http://dx.doi.org/10.2118/129200-PA.
Seright, R.S., Prodanovic, M., and Lindquist, W.B. 2006. X-Ray ComputedMicrotomography Studies of Fluid Partitioning in Drainage and Imbibition Beforeand After Gel Placement. SPE J. 11 (2): 159-170.SPE-89393-PA. http://dx.doi.org/10.2118/89393-PA.
Seright, R.S., Seheult, M., Kelco, C.P., and Talashek, T. 2009. InjectivityCharacteristics of EOR Polymers. SPE Res Eval & Eng 12(5): 783-792. SPE-115142-PA. http://dx.doi.org/10.2118/115142-PA.
Taylor, K.C. and Nasr-El-Din, H.A. 1998. Water-soluble hydrophobicallyassociating polymers for improved oil recovery: A literature review. J. Pet.Sci. Eng. 19 (3-4): 265-280. http://dx.doi.org/10.1016/S0920-4105(97)00048-X.
Taylor, K.C. and Nasr-El-Din, H.A. 2007. Hydrophobically AssociatingPolymers for Oil Field Applications. Paper CIPC 2007-016 presented at theCanadian International Petroleum Conference, Calgary, 12-14 June. http://dx.doi.org/10.2118/2007-016.
Volpert, E., Selb, J., Candau, F., Green, N., Argillier, J.F., and Audibert,A. 1998. Adsorption of hydrophobically associating polyacrylamides on clay.Langmuir 14 (7): 1870-1879. http://dx.doi.org/10.1021/la970358h.
Zhao, H., Zhao, P., Bai, B., Xiao, L., and Liu, L. 2006. Using AssociatedPolymer Gels to Control Conformance for High Temperature and High SalinityReservoirs. J Can Pet Technol 45 (5): 49-54. JCPT Paper No.06-05-04. http://dx.doi.org/10.2118/06-05-04.
Zitha, P.L.J., Chauveteau, G., and Léger, L. 2001. Unsteady-State Flow ofFlexible Polymers in Porous Media. J. Colloid Interface Sci. 234 (2): 269-283. http://dx.doi.org/10.1006/jcis.2000.7306.