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首页> 外文学位 >Effects of surfactant adsorption and distribution on enhanced heavy oil recovery by alkaline/surfactant flooding.
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Effects of surfactant adsorption and distribution on enhanced heavy oil recovery by alkaline/surfactant flooding.

机译：表面活性剂的吸附和分布对通过碱/表面活性剂驱油提高稠油采收率的影响。

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摘要

Surfactant adsorption on reservoir rocks or sands is one of the major factors that may significantly reduce the effectiveness of alkaline/surfactant flooding for heavy oil recovery. It is difficult to determine the surfactant adsorption by measuring the difference in surfactant concentrations before and after adsorption when the water phase contains fine heavy oil drops that cannot be separated by using a centrifuge. In this study, sand-washing method was developed to quantitatively determine the surfactant adsorption on sand surface in oil/(alkaline/surfactant solution)/sand systems. By combining the sand-washing method and the conventional static adsorption test, this study successfully determined the distribution of surfactants between the oil-water interface and the sand surface in alkaline/surfactant flooding process for heavy oil recovery. The results showed that surfactant adsorption on sand would diminish over 40% due to the formation of emulsion with the presence of the heavy oil. With sand-washing method, equilibrium surfactant concentration in an aqueous phase could be determined from the surfactant adsorption isotherm. Using the mass balance method, surfactant partitioned to oil-water interface could be calculated. (Abstract shortened by UMI.)
机译：表面活性剂在储层岩石或沙子上的吸附是可能显着降低碱/表面活性剂驱油对重油采收的有效性的主要因素之一。当水相中含有无法通过离心机分离的细重油滴时，很难通过测量吸附前后表面活性剂浓度的差异来确定表面活性剂的吸附量。在这项研究中，开发了洗砂方法以定量确定油/（碱性/表面活性剂溶液）/砂系统中表面活性剂在砂表面的吸附。结合洗砂法和常规静态吸附试验，成功地确定了碱/表面活性剂驱油过程中表面活性剂在油水界面与砂面之间的分布，以进行重油回收。结果表明，由于在重油存在下形成乳液，表面活性剂在沙子上的吸附将减少40％以上。用洗砂法，可以从表面活性剂的吸附等温线确定水相中平衡的表面活性剂浓度。使用质量平衡方法，可以计算分配到油水界面的表面活性剂。 （摘要由UMI缩短。）

著录项

  • 作者

    Zhou, Wei.;

  • 作者单位

    The University of Regina (Canada).;

  • 授予单位 The University of Regina (Canada).;
  • 学科 Engineering Petroleum.
  • 学位 M.A.Sc.
  • 年度 2005
  • 页码 115 p.
  • 总页数 115
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 石油、天然气工业;
  • 关键词

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