摘要
疏水缔合水溶性聚合物是一种亲水性大分子链上带有少量疏水基团的水溶性聚合物 ,在宏观条件下由于其缔合作用 ,聚合物溶液表现出明显的抗剪切和剪切恢复的特性。通过室内实验研究了疏水缔合水溶性聚合物 (AP -P3)溶液在多孔介质中的渗流特征 ,从而探讨了AP -P3溶液在多孔介质中的缔合行为。研究结果表明 ,AP -P3溶液在多孔介质狭小的空间中 ,仍能发生以分子间缔合为主的缔合行为 ,但是形成分子间缔合的溶液浓度明显高于宏观条件下的第二临界缔合浓度 (CAC) ;同时应用吸附滞留实验验证了 ,这种缔合作用 ,不是由于大量疏水缔合聚合物在多孔介质中的累积滞留效应引起的。当AP -P3溶液浓度高于孔隙介质中形成分子间缔合的浓度时 ,聚合物溶液的阻力系数随着浓度的增加 ,发生急剧增加的变化 ,表现出了AP
Hydrophobic association water-soluble polymer is the one with a few hydrophobic group in hydrophilic macromolecular chain; because of its association action under macroscopic condition, the polymer solution shows a clear characteristic of shear and shear-resumption. The seepage flow characteristics of hydrophobic association water-soluble polymer(AP-P3) solution in porous media have been studied through laboratory experiment, thus the association behavior of AP-P3 solution in porous media approached. The studied result shows that within the narrow space of porous media, the AP-P3 solution can still generate association behavior with intermolecular association as the main, but the solution concentration in which intermolecular association is formed is obviously higher than the 2nd critical association concentration (CAP) under macroscopic condition; and by using the adsorption retention experiment, it has been verified that this association action is not caused by cumulative retention effect of large amount hydrophobic association polymer in porous media. When the AP-P3 solution concentration is higher than intermolecular association concentration formed in porous media, the polymer solution resistance coefficient will increase sharply along with the increasing concentration, showing that the AP-P3 solution possesses stronger mobility controllability.
出处
《天然气勘探与开发》
2004年第4期40-43,59,共5页
Natural Gas Exploration and Development
