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最佳中相微乳液驱油体系研究 被引量:6

Research on middle phase microemulsion system for flooding
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摘要 微乳液驱油是提高油藏采收率的有效方法,关键因素在于微乳液可以使原油驱替液的界面张力降低到10^(-3)~10^(-4)m N·m^(-1)的超低水平,并使原油在盐水中的增溶量达到最大值。采用拟三元相图法,筛选出了SDS表面活性剂、正丁醇、K_m=1.5,其增溶性较好,试剂消耗量最少;应用正交实验获得了制备最佳中相微乳液驱油体系配方,并分别对SDS浓度、正丁醇浓度和Na_2CO_3浓度进行了扫描,得到的体积相图和增溶参数图,得出:V_o=V_w,SP_o=SP_w,体系达到了最佳中相。该体系可作为"三采"中的驱油剂,用于提高油藏采收率。 Microemulsion flooding is an effective approach to improve reservoir recovery, and the key factor lies that microemulsion can lower the interfacial tension of crude oil and displacing fluid to 10^(-3)~10^(-4)m N·m^(-1), and make the maximum solubilization of crude oil in the salt water. Using the pseudo ternary phase diagram method to Select the surfactant SDS, n-butyl alcohol, K_m =1.5, its good solubility, reagent consumption minimum; Using or-thogonal experiment, we obtain the preparation of middle phase microemulsion formula of oil displacement system.Scanning respectively SDS concentration, concentration of n-butyl alcohol and Na_2CO_3, we get the volume of the phase diagram and dissolve parameters figure. It can be seen: V_o=V_w, SP_o=SP_w, and achieved the best phase system.The system can be used as oil displacement agent, used to improve reservoir recovery efficiency.
出处 《化学工程师》 CAS 2016年第3期56-59,共4页 Chemical Engineer
关键词 微乳液 采收率 增溶性 界面张力 microemulsion oil recovery solubilization interfacial tension
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  • 1陈咏梅,王涵慧,俞稼镛.石油磷酸盐体系中相微乳液研究[J].物理化学学报,2000,16(8):724-728. 被引量:17
  • 2Rang Guo, Xun Wei, Tianqing Liu, Investigations of Capacitance for Sodium Dodecyl Sulfate/Benzyl alcohol/H20 Microemulsion, Colloids and Surfaces A, 2006, 277 : 59-62.
  • 3Tianqing Liu, Jianxin Xu, Rang Guo, Determination of the Electrochemical Diffusion Coefficient of Methylene Blue in SDS/n-CsHIIOH/H20 System by Non-probe Microelectrode Vohammetry, Colloid Polym. Sci., 2006, 284:788-794.
  • 4郝京诚,汪汉卿,鲁润华,王淘淘,石硕,李干佐,孙海英.微乳液相行为和微观结构的研究[J].中国科学(B辑),1997,27(2):131-139. 被引量:27

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