Study on oil displacement performance of temperature sensitive polymer

XU Hui; ZHU Yangwen; SONG Min; PANG Xuejun; SUN Xiuzhi

doi:10.13809/j.cnki.cn32-1825/te.2020.06.008

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Study on oil displacement performance of temperature sensitive polymer

更新时间：2025-12-11

- Study on oil displacement performance of temperature sensitive polymer
- Petroleum Reservoir Evaluation and Development Vol. 10, Issue 6, Pages: 53-57(2020)
- 作者机构：
  
  1. 中国石化胜利油田分公司勘探开发研究院,山东东营 257015中国石化胜利油田分公司油气开发管理中心,山东,东营,257000
  2. 中国石化胜利油田分公司油气开发管理中心,山东,东营,257000
- 作者简介：
- 基金信息：
- DOI：10.13809/j.cnki.cn32-1825/te.2020.06.008
  CLC： TE357
- Published：2020
- 稿件说明：
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XU Hui, ZHU Yangwen, SONG Min, et al. Study on oil displacement performance of temperature sensitive polymer[J]. Petroleum Reservoir Evaluation and Development, 2020, 10(6): 53-57.
DOI：

XU Hui, ZHU Yangwen, SONG Min, et al. Study on oil displacement performance of temperature sensitive polymer[J]. Petroleum Reservoir Evaluation and Development, 2020, 10(6): 53-57. DOI： 10.13809/j.cnki.cn32-1825/te.2020.06.008.

摘要

为了改善聚丙烯酰胺在高温高盐油藏条件下溶液的增黏性能

常用的方法是在合成过程中引入缔合类和抗盐类单体

但随着单体合成技术的发展

出现了一些温敏型共聚物

目前对这类聚合物驱油性能的研究较少。为此选择了常规AM-NaAA二元共聚物和AM-NaAA-RTM温敏型三元共聚物

对比了两种聚合物的基本物化性能、增黏性、耐温性和黏弹性

结果表明

引入温敏型单体后

温度低于60 ℃时

AM-NaAA-RTM共聚物黏度随温度的增加仍然降低

但在温度高于60 ℃时

黏度随温度的增加逐渐提高

在85 ℃时

AM-NaAA-RTM共聚物的黏度相对AM-NaAA二元共聚物提高1倍以上

有利于高温油藏扩大波及体积

且AM-NaAA-RTM共聚物黏弹模量高于常规AM-NaAA聚合物

因此

温敏型聚合物驱油效果好于常规AM-NaAA聚合物

有望应用在高温高盐油藏化学驱中。

Abstract

In order to improve the viscosity-increasing performance of polyacrylamide solution in high temperature and high salt reservoir

the common method is to introduce association and salt-resistant monomer in the synthesis process. However

with the development of monomer synthesis technology

some temperature-sensitive copolymers appear. At present

there are few researches on the oil displacement performance of these polymers. For this reason

conventional binary copolymer AM-NaAA and temperature sensitive terpolymer AM-NaAA-RTM have been selected

and the basic physico-chemical properties

viscosity enhancement

temperature resistance and viscoelasticity of the two polymers have been compared. The results show that after the introduction of temperature sensitive monomers

when the temperature is below 60 ℃

with the rise of temperature

the viscosity of AM-NaAA-RTM decreases; but when the temperature is above 60 ℃

its viscosity increases with the rise of temperature; while at 85 ℃

the viscosity of AM-NaAA-RTM is more than double that of AM-NaAA

which is conducive to expanding swept volume of high temperature reservoirs. In addition

the viscoelasticity modulus of AM-NaAA-RTM is higher than that of AM-NaAA. Therefore

the oil flooding effect of temperature-sensitive polymer is better than that of conventional AM-NaAA polymer

which is expected to be applied in chemical flooding of high temperature and high salt reservoirs.

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