Evaluation of modified cationic starch for impeding polymer channeling and in-depth profile control after polymer flooding

Ru Qiao; Weiqun Zhu

Journal of Industrial and Engineering Chemistry, Vol.16, No.2, 278-282, March, 2010

DOI10.1016/j.jiec.2009.09.070 Export Citation

Evaluation of modified cationic starch for impeding polymer channeling and in-depth profile control after polymer flooding

Ru Qiao^†, and Weiqun Zhu^{1, †}

College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
¹School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China

E-mail:,

Premature polymer production in large quantities from flooding reservoirs is a serious problem commonly existing in some large oilfields in China. This is owing to polymer channeling through high permeability zones or pore passage. This paper presents a novel modified cationic starch, which can react with partially hydrolyzed polyacrylamide (HPAM) remaining in reservoir formation to form gels in-situ. The obtained gels can reduce polymer channeling and make successive injected water into mid-low permeability zones that achieve the purpose of deep profile control. The rheological property and the gel strength are examined. The singular sand-pack core-flood test results provide experimental evidence that the formed gel system is more effective in plugging high permeability pore passages. Moreover, the parallel core-flood test was conducted to simulate the process of in-depth profile modification in a heterogeneous formation. It has been found that this gel system can significantly enhance oil recovery and effectively reduce water-cut.

Keywords:Modified cationic starch;Polymer channeling;Gel system;Profile control in-depth

[References]

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Uma BH, Kim YS, J. Ind. Eng. Chem., 15(1), 1 (2009)
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Emesih GC, Moreira RG, Barrufet MA, Appl. Eng. Agric., 15, 237 (1999)
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Sabhapondit A, Borthakur A, Haque I, Energy Fuels, 17(3), 683 (2003)
Wang W, Liu Y, Gu Y, Colloid Polym. Sci., 281, 1046 (2003)

[Referenced By]

[1] Qu R, Li Z, Wang Z, Oilfield Chem., 18, 40 (2001)

[2] Pavone D, Paper SPE, 19670, 187 (1992)

[3] Fayers FJ, Blunt MJ, Christle MA, Paper SPE, 22184, 195 (1992)

[4] Daripa P, Pasa G, Int. J. Eng. Sci., 42, 2029 (2004)

[5] Bao M, Kong X, Jiang G, Wang X, Li X, J. Pet. Sci. Eng., 66, 42 (2009)

[6] Wang D, Cheng J, Yang Q, Gong W, Li Q, Chen F, Paper SPE, 63227, 719 (2000)

[7] Wang D, Xia H, Liu Z, Yang Q, Paper SPE 68723 Presented at the 2001 SPE Asia Pacific Oil and Gas Conference and Exhibition, Jakarta, Indonesia, April 17-19 (2001)

[8] Wang D, Liu H, Niu J, Chen F, Paper SPE 50928 Presented at SPE International Oil and Gas Conference and Exhibition, Beijing, China, November 2-6 (1998)

[9] Leslie T, Xiao H, Dong M, J. Pet. Sci. Eng., 46, 225 (2005)

[10] Kang KC, Jeong NH, Lee CI, Pyo HB, J. Ind. Eng. Chem., 15(4), 529 (2009)

[11] Larsson A, Colloids Surf., B: Biointerfaces, 12, 23 (1998)

[12] Rodriguez R, Alvarez-Lorenzo C, Concheiro A, Biomacromolecules, 2(3), 886 (2001)

[13] Uma BH, Kim YS, J. Ind. Eng. Chem., 15(1), 1 (2009)

[14] Charinpanitkul T, Tanthapanichakoon W, Kulvanich P, Kim KS, J. Ind. Eng. Chem., 14(5), 661 (2008)

[15] Emesih GC, Moreira RG, Barrufet MA, Appl. Eng. Agric., 15, 237 (1999)

[16] Barrufet MA, Perez JM, Mondava SS, Paper SPE, 24809, 445 (1992)

[17] Sabhapondit A, Borthakur A, Haque I, Energy Fuels, 17(3), 683 (2003)

[18] Wang W, Liu Y, Gu Y, Colloid Polym. Sci., 281, 1046 (2003)