Study on an emulsion-type blockage removal agent for heavy oil recovery enhanced by polymer

Tongyu Zhu; Hongbin Yang; Haizhuang Jiang; Xin Kang; Menglan Li; Min Zhang; Wanli Kang; Bauyrzhan Sarsenbekuly; Saule Aidarova; Maratbek Gabdullin

Journal of Industrial and Engineering Chemistry, Vol.89, 273-279, September, 2020

DOI10.1016/j.jiec.2020.05.023 Export Citation

Study on an emulsion-type blockage removal agent for heavy oil recovery enhanced by polymer

Tongyu Zhu^{1, 2}, Hongbin Yang^{1, 2}, Haizhuang Jiang^{1, 2}, Xin Kang^{1, 2}, Menglan Li^{1, 2}, Min Zhang^{1, 2}, Wanli Kang^{1, 2, †}, Bauyrzhan Sarsenbekuly^{1, 2}, Saule Aidarova^{1, 2}, and Maratbek Gabdullin^{1, 2}

¹Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao, 266580, PR China
²School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China

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In polymer flooding process, the poor solubility of polymer and the wrap of incompletely dissolved polymer particles with heavy oil lead to the generation of complicated blockage, which seriously affects the normal production of wells. Therefore, how to fabricate an effective blockage removal agent is particularly important. Based on the blockage from Bohai Offshore Oilfield in China, a blockage removal agent composed of (0.5 wt% potassium persulfate + kerosene (the ratio of kerosene: blockage is 3:5) +0.3 wt% OP-10, the oil-water ratio is 1:9) was developed. The removal effect and mechanism were characterized by weight loss method and core test. Moreover, the emulsification property of the removal agent was also evaluated by microscopic appearance. The results showed that the blockage removal agent can be formulated as an O/W emulsion and had good stability for more than 72 h. Core test showed that the permeability had a significant improvement after injection of removal agent. The emulsion-type removal agent can demulsify after contact with the blockage, then the oil-soluble detergent as internal phase in emulsion can be released which contributes to the wash off of heavy oil. Accompanied with the polymer degradation by the oxidant, this agent realized the effective dissolution and removal of blockage.

Keywords:Heavy oil formation;Polymer flooding;Emulsion-Type blockage removal agent;Permeability recovery;Removal mechanism

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[Referenced By]

[1] Sheng JJ, Leonhardt B, Azri N, J. Can. Pet. Technol., 54(2), 116 (2015)

[2] Saboorian-Jooybari H, Dejam M, Chen Z, J. Pet. Sci. Eng., 142, 85 (2016)

[3] You Q, Wen Q, Fang J, Guo M, Zhang Q, Dai C, J. Pet. Sci. Eng., 174, 747 (2019)

[4] Amirian E, Dejam M, Chen ZX, Fuel, 216, 83 (2018)

[5] Yang HB, Shao S,Zhu T, Chen C, Liu S, Zhou B, Hou X, Zhang Y, Kang W, J. Ind. Eng. Chem., 79, 295 (2019)

[6] Yang H, Hu L, Chen C, Zhao H, Wang P, Zhu T, Wang T, Zhang L, Fan H, Kang W, J. Mol. Liq., 308, 113081 (2020)

[7] Zheng S, Zhang Y, Lin H, Liu Y, Pet. Explor. Dev., 31, 108 (2004)

[8] Jiang X, Wang R, Lu X, Deng Q, Xiao L, Oilfield Chem., 31, 269 (2014)

[9] Zhang J, Yang P, Pet. Explor. Dev., 22, 74 (1995)

[10] Shaw RA, Stright DH, J. Can. Pet. Technol., 16, 326 (1997)

[11] Meng X, Zhao L, Xu K, Li J, Oil Drill. Prod. Technol., 33, 70 (2011)

[12] Jiang X, Liu M, Zhang X, Wang Z, Zhu K, Pet. Explor. Dev., 29, 103 (2002)

[13] Guan G, Kang Y, Fu H, Wang J, Oilfield Chem., 33, 442 (2016)

[14] Zhang G, Wang Z, Liu Y, Zhang Y, Zhao L, Oilfield Chem., 23, 385 (2006)

[15] Cao Z, Leng Q, Zhang Y, Qu R, Oilfield Chem., 23, 77 (2006)

[16] Yi F, Zhao X, Liu W, He R, Li C, Liu Y, Oil Drill. Prod. Technol., 26, 53 (2004)

[17] Zhao Y, Jin X, Wu W, Wu B, J. Oil Gas Technol., 36, 139 (2014)

[18] Gao S, Zhang L, Liu Y, Liu C, Meng X, Zou J, Oil Drill. Prod. Technol., 39, 375 (2017)

[19] Kiokias S, Varzakas T, Crit. Rev. Food Sci. Nutr., 57, 3165 (2017)

[20] Iqbal M, Zafar N, Fessi H, Elaissari A, Int. J. Pharm., 496, 173 (2015)

[21] Mitri K, Shegokar R, Gohla S, Anselmi C, Mueller RH, Int. J. Pharm., 414, 267 (2011)

[22] Li Z, Wu H, Yang M, Jiang J, Xu D, Feng H, Lu Y, Kang W, Bai B, Energy Fuels, 32, 3119 (2018)

[23] Ma T, Feng H, Wu H, Li Z, Jiang J, Xu D, Meng Z, Kang W, Colloids Surf. A: Physicochem. Eng. Asp., 581 (2019)

[24] Sayed MA, Nasr-El-Din HA, Nasrabadi H, J. Can. Pet. Technol., 52(3), 164 (2013)

[25] Maheshwari P, Maxey J, Balakotaiah V, SPE Prod. Oper., 31, 103 (2016)

[26] Sayed MA, Assem AI, Nasr-El-Din HA, SPE Prod. Oper., 29, 29 (2014)

[27] Zhao Y, Jin X, Wu W, Lu D, J. Oil Gas Technol., 36, 133 (2014)

[28] Kang W, Zhang H, Lu Y, Yang H, Zhu T, Zhang X, Chen C, Sarsenbekuly B, Besembaevna OZ, J. Mol. Liq., 269, 111792 (2019)

[29] Chen X, Li Y, Xie X, Chen S, Oilfield Chem., 34, 675 (2017)

[30] Fu ZS, Liu M, Xu JT, Wang Q, Fan ZQ, Fuel, 89(10), 2838 (2010)

[31] Zhu Z, Kang W, Yang H, Wang P, Zhang X, Yin X, Lashari ZA, Colloid Polym. Sci., 295, 1887 (2017)

[32] Kowalska M, Zbikowska A, Wozniak M, Kucharczyk K, J. Dispersion Sci. Technol., 38, 1563 (2017)

[33] Goyal A, Sharma V, Upadhyay N, Singh AK, Arora S, Lal D, Sabikhi L, J. Food Sci. Technology-Mysore, 52, 4256 (2015)

[34] Ma J, Yang S, Ji H, Zhang Y, Wang Y, Fault Block Oil Gas Field, 26, 800 (2019)

[35] Hsu SY, Glantz R, Hilpert M, Int. J. Oil Gas Coal Technol., 5, 207 (2012)

[36] Mo F, Du Z, Peng X, Tang Y, Sun H, J. Nat. Gas Sci. Eng., 44, 314 (2017)