聚表二元体系的相互作用

【作者】 周扬帆；

【导师】 叶仲斌；

【作者基本信息】 西南石油学院 ， 油气田开发工程， 2005， 硕士

【摘要】 理论与实践均已证明,化学驱提高采收率技术可以显著提高水驱油藏的采收率,而聚表二元驱技术逐渐成为化学驱提高采收率研究的一个新的重点。因此,聚表二元体系的性能研究即聚表之间的相互作用便成为聚表二元驱技术研究中需解决的技术关键之一。 本文对比常见的部分水解聚丙烯酰胺HPAM,将新型的疏水缔合聚合物AP-P4与阴离子表面活性剂SDBS复配,研究聚表二元体系的表观粘度及油水界面张力特性,以了解聚表组分在液相中的相互作用规律;研究聚表复合体系中各组分浓度测定方法,以找到一种测试简便准确快捷的浓度测定方法,为吸附研究提供可靠手段;研究聚表体系在去油砂岩上的静态吸附规律,以了解聚表组分在固液界面上的相互作用规律。 研究结果表明:AP-P4/SDBS体系较之HPAM/SDBS体系具有更好的增粘性、耐温耐盐性及界面活性;聚表组分在固液界面上的吸附为竞争吸附;AP-P4比HPAM更易降低SDBS在去油砂岩上的吸附。 另外,本文针对聚表混合溶液浓度测定,创新使用三波长紫外分光光度法,并为该方法编写了三波长自动优选程序及浓度计算程序,使混合溶液不经分离提纯便能快速准确地测定其中某组分或多组分的浓度。更多还原

【Abstract】 Theory and practice have proven that chemical flooding can improve oil recovery in water-flooding oil reservoir dramatically , and polymer/surfactant flooding gradually became a new emphases of research on chemical flooding technologies. Then, the character of polymer/surfactant system, namely the reaction of polymer and surfactant became one of me technological keys of polymer/surfactant compound flooding technologies.In the paper, we compounded HAWP and SDBS, compared with HPAM, and researched the character of viscidity and interfacial tension in polymer/surfactant compound system to learn the law about reaction of polymer and surfactant in liquid, and researched the methods about determination of concentration of polymer and surfactant to find some new and simple methods, and researched the laws of static adsorption of polymer and surfactant on the sand to learn reaction of polymer and surfactant on the interface of solid and liquid.Research has proven that AP-P4/SDBS compound system, compared with HPAM/SDBS compound system, have higher viscidity and better temperature and salinity tolerance and better interfacial activity. Polymer and surfactant are adsorbed on the sand competitively and AP-P4 is easier in reducing the adsorption of SDBS than HPAM.In addition, tri-wavelength ultraviolet spectrometry has been used innovatively in determination of surfactant concentration in polymer/surfactant compound solutions, and the procedure of automatic tri-wavelength selection and of concentration calculation made the determination more easily and well.更多还原