阴非离子型Gemini表面活性剂驱油体系性能评价
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摘要
为提高低渗透油藏采收率,开发了一种阴非离子型Gemini表面活性剂ANG7-Ⅳ-7,并测定体系的界面张力、乳化性能和吸附量。结果表明,ANG7-Ⅳ-7表面活性剂浓度在1~4 g/L范围内,油水界面张力均可达到10-3m N/m的超低数量级,当ANG7-Ⅳ-7浓度为4 g/L时,能使油水界面张力达到最低值6.025×10-3m N/m;在注入浓度为4 g/L时,表面活性剂在油砂上的吸附量为2.035 mg/g。室内岩心驱油试验结果表明,4 g/L的ANG7-Ⅳ-7表面活性剂驱可在水驱后提高采收率11个百分点。
In order to improve the recovery of low-permeability reservoirs,a anionic-nonionic Gemini surfactant ANG7-Ⅳ-7 was developed. The interfacial tension,emulsifying property and adsorption capacity of the system were determined. The results showed that the interfacial tension of ANG7-Ⅳ-7 was in the order of 10-3 m N/m when the concentration of ANG7-Ⅳ-7 was in the range of 1 ~ 4 g/L. When ANG7-Ⅳ-7 concentration was 4 g/L,it can make the oil-water interface tension reach the lowest value of 6. 025 ×10-3 m N/m. In addition,the adsorption amount of reservoir sand was 2. 035 mg/g when the injection concentration was 4 g/L. The core fooding test in lab showed that the oil displacement efficiency of surfactant flooding with 4 g/L of ANG7-Ⅳ-7 enhanced 11 percentage points.
In order to improve the recovery of low-permeability reservoirs,a anionic-nonionic Gemini surfactant ANG7-Ⅳ-7 was developed. The interfacial tension,emulsifying property and adsorption capacity of the system were determined. The results showed that the interfacial tension of ANG7-Ⅳ-7 was in the order of 10-3 m N/m when the concentration of ANG7-Ⅳ-7 was in the range of 1 ~ 4 g/L. When ANG7-Ⅳ-7 concentration was 4 g/L,it can make the oil-water interface tension reach the lowest value of 6. 025 ×10-3 m N/m. In addition,the adsorption amount of reservoir sand was 2. 035 mg/g when the injection concentration was 4 g/L. The core fooding test in lab showed that the oil displacement efficiency of surfactant flooding with 4 g/L of ANG7-Ⅳ-7 enhanced 11 percentage points.
引文
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[11]李移乐,任海晶,李俊莉.Gemini表面活性剂在驱油体系中的应用进展[J].广东化工,2011,38(12):64-65,73.
[12]赵禧阳,李小瑞,马国艳.超低界面张力阴离子复合型驱油体系性能研究[J].应用化工,2017,46(10):1880-1883.
[13]董珍,杨飞,刘哲,等.驱油用Gemini表面活性剂的合成与评价[J].油田化学,2013,30(3):411-415.
[14]陈欣.驱油用新型甜菜碱表面活性剂的合成及性能研究[D].成都:西南石油大学,2016.
[15]隋智慧.驱油用表面活性剂的研究[J].精细石油化工进展,2005(1):7-11.
[2]鞠野.一元/二元/三元驱油体系微观驱油机理研究[D].大庆:大庆石油学院,2006.
[3]薛凝.Gemini阴离子表面活性剂的合成及驱油实验[D].西安:西北大学,2010.
[4]范海明,孟祥灿,郁登朗,等.Gemini型表面活性剂三元复合体系性能和驱油效果[J].石油化工高等学校学报,2014,27(1):79-83.
[5]Menger F M,Littau C A.Gemini-surfactants:synthesis and properties[J].J Am Chem Soc,1991,113(4):1451-1452.
[6]Deinega Yu F,Ulberg Z R,Marochko L G,et al.Colloidalchemical properties of surfactants of quaternary ammonium compounds[J].Kolloidnyi Zhumal,1974,36(4):649-653.
[7]陈刚,宋莹盼,唐德尧,等.表面活性剂驱油性能评价及其在低渗透油田的应用[J].油田化学,2014,31(3):410-413,418.
[8]孙正贵,张健,朱红.新型Gemini表面活性剂-石油磺酸盐复合驱油剂的研究[J].精细与专用化学品,2006(S1):65-67.
[9]姜振海.表面活性剂/聚合物二元复合体系驱油效果研究[J].石油钻采工艺,2011,33(1):73-75.
[10]刘晨,王业飞,于海洋,等.低渗透油藏表面活性剂驱油体系的室内研究[J].石油与天然气化工,2011,40(5):486-489.
[11]李移乐,任海晶,李俊莉.Gemini表面活性剂在驱油体系中的应用进展[J].广东化工,2011,38(12):64-65,73.
[12]赵禧阳,李小瑞,马国艳.超低界面张力阴离子复合型驱油体系性能研究[J].应用化工,2017,46(10):1880-1883.
[13]董珍,杨飞,刘哲,等.驱油用Gemini表面活性剂的合成与评价[J].油田化学,2013,30(3):411-415.
[14]陈欣.驱油用新型甜菜碱表面活性剂的合成及性能研究[D].成都:西南石油大学,2016.
[15]隋智慧.驱油用表面活性剂的研究[J].精细石油化工进展,2005(1):7-11.