石油学报 ›› 2005, Vol. 26 ›› Issue (2): 85-87,91.DOI: 10.7623/syxb200502019

• 油田开发 • 上一篇    下一篇

AMPS共聚物溶液的性质及在多孔介质中的流动特征

赵仁保, 岳湘安, 张宏方   

  1. 中国石油大学提高采收率研究中心, 北京, 102249
  • 收稿日期:2004-04-19 修回日期:2004-07-19 出版日期:2005-03-25 发布日期:2010-05-21
  • 作者简介:赵仁保,男,1971年11月生,1997年获中国科学院新疆化学所有机化学专业硕士学位,现为中国石油大学在读博士生,主要从事提高采收率工作.E-mail:zhaorenbao@sina.com
  • 基金资助:
    中国石油化工集团公司科技攻关项目"高温高盐油藏聚合物驱油技术研究"部分成果.

Flowing characteristics of 2-acrylamide-2-methyl propane-sulfonic-acid copolymer solution in porous medium

ZHAO Ren-bao, YUE Xiang-an, ZHANG Hong-fang   

  1. Enhanced Oil Recovery Research Center, China University of Petroleum, Beijing 102249, China
  • Received:2004-04-19 Revised:2004-07-19 Online:2005-03-25 Published:2010-05-21

摘要: 2-丙烯酰胺基-2-甲基丙磺酸(AMPS)共聚物在高温、高矿化度下具有较高的稳定性及增粘性能。对这类聚合物在高温高盐油藏应用的可行性进行了研究。对AMPS共聚物的溶解性、溶液流变特性以及在岩心中流动进行的试验结果表明,其溶解性较差;矿化度对溶液的滤过性有较大的影响;在剪切速率γ为10~100s-1时,曲线出现拐点,且聚合物浓度越低,拐点越明显;浓度和矿化度均会影响聚合物分子的缔合程度。岩心试验表明,高矿化度的聚合物溶液中存在的不溶物或微凝胶会使聚合物溶液在不同渗透率岩心中出现不同程度的堵塞。

关键词: AMPS共聚物, 溶解性, 矿化度, 缔合程度, 渗透率, 流动特征

Abstract: The 2-acrylamide-2-methyl propane-sulfonic-acid (AMPS) copolymer has good stability and viscosifying capacity at high temperature and high salinity.The applicability of AMPS copolymer solution to high-temperature and high-salinity reservoirs was investigated.The solubility,rheological behaviors and flow of AMPS copolymer in core were experimented.The results indicate that the solubility is low,and salinity greatly influences the filterability of AMPS solution.With the decrease of polymer concentration,the shearing effect becomes weaker and the discontinuity point gets sharper when the shearing rate varies from 10s-1 to 100s-1.Both the concentration of polymer and salinity of solution affect the degree of molecule association.Insoluble or micro-gel formed in high-salinity solution causes plugging in porous medium to some degree.

Key words: 2-acrylamide-2-methyl propane-sulfonic-acid copolymer, solubility, salinity, association degree, permeability, flowing characteristic

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