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王剛;王德民;夏惠芬;張立娟 　　從微觀驅油實驗和理論出發,研究系列質量濃度的黏彈性聚合物(HPAM)溶液和系列黏度的甘油溶液對簡化收縮流道中的殘余油膜的驅油效率,分析黏彈性的HPAM溶液和甘油溶液對殘余油膜的作用效果,給出HPAM溶液的彈性與殘余油膜厚度的關系.研究結果表明:在相同黏度條件下,HPAM溶液驅后的殘余油膜厚度比甘油溶液的小,聚合物溶液對油膜的驅替效率比甘油溶液的大;隨溶液彈性的增強,對油膜的驅替效率增大,殘余油膜的厚度減少;聚合物溶液的彈性改變了聚合物溶液在孔道中的受力狀態,增加了凸角內流體的流速,對油膜的作用增強,增加了攜帶能力,提高了微觀驅油效率. 【作者單位】：大慶石油學院提高油氣采收率教育部重點實驗室;大慶石油學院提高油氣采收率教育部重點實驗室;大慶石油學院提高油氣采收率教育部重點實驗室;中國石油大學提高采收率中心 黑龍江大慶163318;大慶油田有限責任公司技術發展部;黑龍江大慶163453;黑龍江大慶163318;黑龍江大慶163318;北京102249 【關鍵詞】：聚合物溶液;黏彈性;殘余油膜;驅油效率;作用機理 Efffect of viscoelastisity of HPAM solution on residual oil film WANG Gang1;2;WANG De-min1;XIA Hui-fen1;ZHANG Li-juan3(1.Key Laboratory of Enhance Oil and Gas Recovery of Education Ministry;Daqing Petroleum Institute;Daqing;Heilongjiang 163318;China;2.Technology and Development Department;Daqing Oilfield Corp.Ltd.;Daqing;Heilongjiang 163453;China;3.Petroleum University of China;Beijing 102249;China) 　Based on the micro-oil displacement experiment and theory research,the oil displacement efficiency of polymer solutions and glycerin solution on residual oil film at simplified contraction channels is studied and the mechanism of oil displacement of viscoelastisity of polymer solution on residual oil film is quantitatively analyzed.The results of investigation indicate that the thickness of residual oil film after polymer flooding is smaller than that of glycerin solution in the same viscosity,the oil displacement efficiency of polymer solution on residual oil film is bigger than that of glycerin solution.The oil displacement efficiency increases with the elasticity of polymer solution enhancing on residual oil film,the thickness of residual oil film reduces. 【Keyword】：polymer solution;viscoelastisity;residual oil film;oil displacement efficiency;action mechanism