Performance of Sulfonated Polyacrylamide/Chromium Triacetate Hydrogels for Water Shut-off Treatment

Document Type: Research Paper


1 Chemical Engineering Department, Guilan University, Rasht, Iran

2 Chemical Engineering Department, Tarbiat Modares University, Jalal Al Ahmad Highway, Tehran, Iran

3 Oil, Gas and Thermodynamic TMU Research Group, Tehran, Iran

4 Center for Exploration and Production Studies and Research Division, Research Institute of Petroleum Industry (RIPI)


A hydrogel was prepared by crosslinking aqueous solutions of sulfonated polyacrylamide/chromium triacetate for use in water shut off operations. Gel swelling and the effects of salinity, injection time and flow rate on residual resistance factor (Frr) were investigated. In the presence of electrolytes, gel swelling decreased by about 80%. Results showed that oil permeability increased as injection time increased. The results also indicated that the effect of gel treatment increased with decreasing injection rate. However, when sand packed was water flooded by formation water, Frrw decreased by about 26%. According to the results, Disproportionate Permeability Reduction (DPR) was the result of gel swelling by water injection and dehydration by oil injection.


[1] Eoff L., Dalrymple D., Everett D. & Vasquez J., “Worldwide Field Application of a Polymeric Gel System for Conformance Applications”, SPE. Prod. Oper. J. , 22, pp. 231-235, 2006.

[2] Seright, R.S., “A Strategy for Attacking Excess Water Production”, Presented at the SPE Permian Basin Oil and Gas Recovery Conference, Midland. Texas, p. 0067, May 2001.

[3] Kabir A.H., “Chemical Water & Gas Shutoff Technology: An Overview”, Presented in the SPE Asia Pacific Improved Oil Recovery Conference, Kuala Lumpur, pa. 72119, Oct. 2001.

[4] Zitha P.L.J., Chauvetau G. & Zaithoun A., “Permeability-Dependent Propagation of Polyacrylamides under Near-Wellbore Flow Conditions”, Presented in the SPE International Symposium on Oilfield Chemistry. San Antonio, Texas, p. 28955, Feb. 1995.

[5] Taylor K.C., Nasr-El-Din H.A., “Water-Soluble Hydrophobically Associating Polymers for Improved Oil Recovery: A Literature Review”, J. Pet. Sci. Eng., 19, pp. 265-280, 1998.

[6] Sydansk R.D., “Polymer Gels Formulated with a Combination of High- And Low-Molecular-Weight Polymers Provide Improved Performance for Water Shut-Off Treatments of Fractured Production Wells”, SPE Prod. and Facil, J., 19, pp. 229-236, 2004.

[7] Ganji F. & Vasheghani-Farahani E., “Hydrogels in Controlled Drug Delivery Systems”, Iran. Polym. J., 18, pp. 63-68, 2009.

[8] Rudzinski W.E., Dave A.M., Vaishnav U.H., Kumbar S.G., Kulkarni A.R. & Aminabhavi T.M., “Hydrogels as Controlled Release Devices in Agriculture”, Design. Mon. Polym., 5, pp. 39-65, 2002.

[9] Huang J., Wang X.I. & Yu X.H., “Solute Permeation through the Polyurethane-NIPAAm Hydrogel Membranes with Various Crosslinking Densities”, Desalination, 192, pp. 125-131, 2006.

[10] Sydansk R.D. & Smith T.B., “Field Testing of a New Conformance-Improvement-Treatment Chromium(lll) Gel Technology”, Presented in the SPE/DOE Enhanced Oil Recovery Symposium, Tulsa. Oklahoma, p.17383, Apr. 1988.

[11] Simjoo M., Dadvand Koohi A., Vafaie Seftie M., & Zitha P.L.J., “Water Shut-off in a Fractured System Using a Robust Polymer Gel”, Presented in the European Formation Damage Conference, Scheveningen, Netherland. 27-29, p. 122280, May 2009.

[12] Seright R.S., “Mechanism for Gel Propagation through Fractures. Presented in the SPE Rocky Mountain Regional Meeting”, Gillette, Wyoming, p. 55628, May 1999.

[13] Willhite G.P., Zhu H., Natarajan D., McCool C.S., Green, D.W., “Mechanisms Causing Disproportionate Permeability in Porous Media Treated with Chromium Acetate/HPAAM Gels”, SPE J., 7, 100-108, 2002.

[14] Al-Muntasheri G.A., Nasr-El-Din H.A., Al-Noaimi K.R. & Zitha P.L.J., “A Study of Polyacrylamide-Based Gels Crosslinked with polyethyleneimine”, Presented in the International Symposium on Oilfield Chemistry. Houston. Texas., p. 105925, Febr.-Mar. 2007.

[15] Zolfaghari A., Katbab A.A., Nabavizadeh J., Yousefzadeh Tabasi R. & Hossein Nejad M.J., Preparation and Characterization of Nanocomposite Hydrogels Based on Polyacrylamide for Enhanced Oil Recovery Applications, Applied Polymer Science, 100, 2096, 2006.

[16] Aalaie J., Vasheghani-Farahani E., Rahmatpour A. & Semsarzadeh M.A., “Effect of Montmorillonite on Gelation and Swelling Behavior of Sulfonated Polyacrylamide Nanocomposite Hydrogels in Electrolyte Solutions”, Euro. Polym. J., 44, pp. 2024–2031, 2008.

[17] Lee S, Tirumala VR, Nagao M, Tominaga T, Lin EK, Gong JP, Wu W-L, “Dynamics in multicomponent polyelectrolyte solutions”, Macromolecules, 42, pp. 1293-1299, 2009.

[18] Jia H., PuW.F., Zhao J.Z. & Jin F.Y., “Research on the Gelation Performance of Low Toxic PEI Crosslinking PHPAM Gel Systems as Water Shutoff Agents in Low Temperature Reservoirs”, Ind. Eng. Chem. res., 29, pp. 9618-9624, 2010.

[19] Seright R., “Optimization Disproportionate Permeability Reduction. Presented in the SPE/DOE Symposium on Improved Oil Recovery”, Tulsa. Oklahoma. USA., p. 99443, Apr. 2006.

[20] Stavland A., Andersen K.I. & Sandøy B., “How to Apply a Blocking Gel System for Bullhead Selective Water Shut-off: From Laboratory to the Field”, Presented in the SPE/DOE Symposium on Improved Oil Recovery, Tulsa, Oklahoma, p. 99729, Apr 2006.

[21] Simjoo M., Vafaie-Seftie M., Dadvand-Koohi A., Hasheminasab R. & Sajjadian V.A., “Polyacrylamide Polymer Gel as Water Shut-off System: Preparation and Investigation of Physical and Chemical Properties in One of the Iranian Oil Reservoirs Conditions”, Iran. J. Chem. and Chem, Eng., 26, pp. 99-108, 2007.

[22] Liang J., Sun H., Seright R.S., Why Do Gels Reduce Water Permeability More Than Oil Permeability? SPE Res. Eng. J. , 10, pp. 282-286, 1995.

[23] Dadvand Koohi A., Vafaie Seftie M., Zarrin Ghalam A., Mousavi Moghadam A. & Zanjani S., “Rheological Characteristics of Sulfonated Polyacrylamide/Chromium Triacetate Hydrogels Designed for Water Shutoff”, Iran. Polym. J., 19, 757-770, 2010.

[24]  Aalaie J., Rahmatpour A., “Preparation and swelling behavior of partially hydrolyzed polyacrylamide nanocomposite hydrogels in electrolyte solutions”, J. Macrom. Sci., Part B: Phys., 47, pp. 98–108, 2008.

[25] Xia X., Yih J., D’Souza N.A. & Hu Z., “Swelling and Mechanical Behavior of Poly(N-Isopropylacrylamide)/Na-Montmorillonite Layered Silicates Composite Gels”, Polymer., 44, pp. 3389–3393, 2003.

[26] Vasheghani-Farahani E., Vera J.H., Cooper D.G. & Weber M.E., “Swelling of Ionic Gels in Electrolyte Solutions”, Ind. Eng. Chem. Res. J. , 29, 554–560, 1990.

[27] Sydansk R., “Conformance Improvement in a Subterranean Hydrocarbon-Bearing Formation Using a Polymer Gel”, US Patent No. 4683949, 1987.

[28] Liang J.T., Seright R.S., “Further investigation of why gels reduce water permeability more than oil permeability”, SPE Prod. and Facil, J., 12, pp. 225-230, 1997.

[29] Vega I., Morris W., Robles J., Peacock H. & Marin A., “Water Shut-off Polymer Systems: Design and Efficiency Evaluation based on Experimental Studies”, Presented in the SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, p. 129940, Apr. 2010.

[30] Prado M., Reyna M., Rauseo O. & Ferreira I., “Evaluation of the Effect of Oil Viscosity on the Disproportionate Permeability Reduction of a Polymeric Gel Used for Controlling Excess Water Production”, Presented in the Latin American and Caribbean Petroleum Engineering Conference, Cartagena de Indias, p. 121499, June 2009.

[31] Seright R.S., “Optimization disproportionate permeability reduction. SPE/DOE Symposium on Improved Oil Recovery. Presented in the Latin American and Caribbean Petroleum Engineering Conference”, Tulsa, Oklahoma, p. 99443, Apr. 2006.

[32] Rousseau D., Chauveteau G., Renard M., Tabary R., Zaitoun A., Mallo P., Braun O. & Omari A., “Rheology and Transport in Porous Media of New Water Shutoff / Conformance Control Microgels”, Presented in the SPE International Symposium on Oilfield Chemistry, The Woodlands, Texas, p. 93254, Feb. 2005.

[33] Ghaithan A., Al-Muntasheri G.A., Zitha P.L.J., Nasr-El-Din H.A., “A New Organic Gel System for Water Control: A Computed Tomography Study”, SPE J. , 15, pp. 197-207, Mar. 2010.

[34] Seright R.S., “Understanding the Rate of Clean Up for Oil Zones after a Gel Treatment”, Presented in the SPE International Symposium on Improved Oil Recovery, Tulsa  Oklahoma, p. 112976, Apr. 2008.