Abstract：By tracking and analyzing the research and practices of chemical flooding carried out in the Daqing Oilfield, NE China since the 1970s, the chemical flooding theory, technology adaptability and existing problems were systematically summarized, and directions and ideas of development in the future were proposed. In enhanced oil recovery by chemical flooding, the Daqing Oilfield developed theories related to compatibility between crude oil and surfactant that may form ultra-low interfacial tensions with low-acidity oil, and a series of surfactant products were developed independently. The key technologies for chemical flooding such as injection parameter optimization and numerical simulation were established. The technologies of separation injection, cleansing and anti-scaling, preparation and injection, and produced liquid processing were developed. The matching technologies of production engineering and surface facilities were formed. Through implementation of chemical flooding, the Daqing Oilfield achieved outstanding performances with enhanced recovery rate of 12% in polymer flooding and with enhanced recovery rate of 18% in ASP flooding. To further enhance the oil recovery of chemical flooding, three aspects need to be studied: (1) fine characterization of reservoirs; (2) smart and efficient recovery enhancement technologies; (3) green, high-efficiency and smart matching processes.
孙龙德, 伍晓林, 周万富, 李学军, 韩培慧. 大庆油田化学驱提高采收率技术[J]. 石油勘探与开发, 2018, 45(4): 636-645.
SUN Longde, WU Xiaolin, ZHOU Wanfu, LI Xuejun, HAN Peihui. Technologies of enhancing oil recovery by chemical flooding in Daqing Oilfield, NE China[J]. Petroleum Exploration and Development, 2018, 45(4): 636-645.
[1] NELSON R C, POPE G A.Phase relationships in chemical flooding[J]. SPE Journal, 1978, 18(5): 325-338. [2] MEYERS J J, PITTS M J, WYAR K.Alkaline/surfactant/polymer flood of the West Kielh, Minnelusa Unite[R]. SPE 24144, 1992. [3] STOLL W M, SHUREQI H A, FINOL J, et al.Alkaline/surfactant/ polymer flood: From the laboratory to the field[J]. SPE Reservoir Evaluation & Engineering, 2011, 14(6): 702-712. [4] DENNEY D.Progress and effects of ASP flooding[J]. Journal of Petroleum Technology, 2013, 65(1): 77-81. [5] 唐曾熊. 大庆油田注水开发[J]. 石油学报, 1980, 1(1): 63-76. TANG Zengxiong.Development of Daqing Oilfield by pressure maintenance through water injection: A case history[J]. Acta Petrolei Sinica, 1980, 1(1): 63-76. [6] 程杰成, 吴军政, 胡俊卿. 三元复合驱提高原油采收率关键理论与技术[J]. 石油学报,2014, 35(2): 310-318. CHENG Jiecheng, WU Junzheng, HU Junqing.Key theories and technologies for enhanced oil recovery of alkaline/surfactant/ polymer flooding[J]. Acta Petrolei Sinica, 2014, 35(2): 310-318. [7] 王德民, 王刚, 吴文祥, 等. 黏弹性驱替液所产生的微观力对驱油效率的影响[J]. 西安石油大学学报(自然科学版), 2008, 23(1): 43-55. WANG Demin, WANG Gang, WU Wenxiang, et al.Effect of micro-forces generated by viscoelastic displacement fluid on flooding efficiency[J]. Journal of Xi’an Shiyou University (Natural Science Edition), 2008, 23(1): 43-55. [8] 伍晓林, 楚艳苹. 大庆原油中酸性及含氮组分对界面张力的影响[J]. 石油学报(石油加工), 2013, 29(4): 681-686. WU Xiaolin, CHU Yanping.Effects of acidic and nitrogenous components on interfacial tension of Daqing crude oil[J]. Acta Petrolei Sinica (Petroleum Processing Section), 2013, 29(4): 681-686. [9] 何曼君, 陈维孝, 董西霞. 高分子物理[M]. 上海: 复旦大学出版社, 2003: 429-441. HE Manjun, CHEN Weixiao, DONG Xixia.Polymer physics[M]. Shanghai: Fudan University Press, 2003: 429-441. [10] 程杰成, 王庆国, 王俊, 等. 强碱三元复合驱钙、硅垢沉积模型及结垢预测[J]. 石油学报, 2016, 37(5): 653-659. CHENG Jiecheng, WANG Qingguo, WANG Jun, et al.Ca/Si scale sedimentary model in the strong-base ASP flooding block and scaling prediction[J]. Acta Petrolei Sinica, 2016, 37(5): 653-659. [11] KARAMBEIGI M S, ABBASSI R, ROAYAEI E, et al.Emulsion flooding for enhanced oil recovery: Interactive optimization of phase behavior, microvisual and core-flood experiments[J]. Journal of Industrial & Engineering Chemistry, 2015, 29(2): 382-391. [12] AZIZ K, SETTARI A.油藏数值模拟[M]. 袁士义, 王家禄, 译. 北京: 石油工业出版社, 2004: 12-16. AZIZ K, SETTARI A.Petroleum reservoir simulation[M]. YUAN Shiyi, WANG Jialu, Trans. Beijing: Petroleum Industry Press, 2004: 12-16. [13] POPE G A.The application of fractional flow theory to enhanced oil recovery[J]. SPE Journal, 1980, 20(3): 191-205. [14] KARAZINCIR O, THACH S, WEI W, et al.Scale formation prevention during ASP flooding[R]. SPE 141410, 2011. [15] ALWI N, BORHAN N, IBRAHIM J, et al.Managing micro-emulsion and scale during ASP flooding for North Sabah Field EOR[R]. SPE 24984, 2014. [16] WILSON A.Modeling, monitoring aid fight against scale in alkali/surfactant/polymer floods[J]. Journal of Petroleum Technology, 2014, 66(6): 122-126. [17] DWYER P, DELAMAIDE E.Produced water treatment: Preparing for EOR projects[R]. SPE 174537, 2015.
2018, Vol. 45 
