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An experimental study of the in situ gelation of a polyacrylamide-chromium acetate system in a polymer-treated porous medium.

机译：在聚合物处理的多孔介质中聚丙烯酰胺-乙酸铬体系原位凝胶化的实验研究。

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摘要

The application of polymer-metal ion gel systems has been effective in improving sweep efficiency and increasing crude oil production. The use of a polyacrylamide-chromium acetate gel system involves the injection of a gelant solution that contains a high molecular weight polymer and a crosslinker which is a multivalent metal ion. The performance of this system is limited by short gel times that make in-depth gel treatment impossible. In previous studies it was found that an important mechanism responsible for in situ gelation, which is indicated by a rapid flow resistance build up, is filtration of pre-gel aggregates. It was hypothesized that the interaction between previously adsorbed polymer and flowing aggregates partly contributes to the filtration of pre-gel aggregates.; The objective of this research was to test the reactivity of previously adsorbed polymer and its effect on the build up of flow resistance when a gel solution flows thorough a porous medium which is pre-treated with a less reactive polymer. By this pretreatment the adsorption sites of the porous medium would be satisfied and the interaction between adsorbed polymer and flowing gel solution would be reduced. (Abstract shortened by UMI.)
机译：聚合物-金属离子凝胶体系的应用已有效地提高了清扫效率并增加了原油产量。聚丙烯酰胺-乙酸铬凝胶体系的使用涉及注入包含高分子量聚合物和作为多价金属离子的交联剂的胶凝剂溶液。该系统的性能受到凝胶时间短的限制，从而无法进行深入的凝胶处理。在先前的研究中，发现负责原位凝胶化的重要机制是对预凝胶聚集体的过滤，这是由快速流动阻力的建立所表明的。假设先前吸附的聚合物与流动的聚集体之间的相互作用部分有助于预凝胶聚集体的过滤。这项研究的目的是测试当凝胶溶液流过用反应性较低的聚合物进行预处理的多孔介质时，先前吸附的聚合物的反应性及其对流动阻力建立的影响。通过该预处理，将满足多孔介质的吸附位置，并且将减少吸附的聚合物与流动的凝胶溶液之间的相互作用。 （摘要由UMI缩短。）

著录项

  • 作者

    Bolourchifard, Mehdi.;

  • 作者单位

    The University of Kansas.;

  • 授予单位 The University of Kansas.;
  • 学科 Engineering Petroleum.
  • 学位 M.S.
  • 年度 2006
  • 页码 132 p.
  • 总页数 132
  • 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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