改性纳米氧化锆结合低矿化度水驱油效果研究
DOI:
作者:
作者单位:

1.中国石化西北油田分公司 2.新疆乌鲁木齐;3.新疆大学化工学院 

作者简介:

通讯作者:

中图分类号:

基金项目:

国家重大科技专项(2016ZX05053)资助。


Study on the effect of modified ZrO2 nanoparticles combined with low-salinity water for oil displacement
Author:
Affiliation:

College of Chemical Engineering,Xinjiang University

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    纳米颗粒驱和低矿化度水驱作为目前新型且热门的提高采收率技术,研究人员对其进行广泛研究。为进一步探究纳米ZrO2和低矿化度水协同作用效果,现将塔河油田地层水稀释110倍得到低矿化度水,获得5%的额外采收率,并作为最佳低矿化度水。为提高纳米ZrO2在低矿化度水中的分散性,制备了一种由偶联剂3-氨丙基三甲氧基硅烷改性的纳米ZrO2。采用红外光谱仪、透射电镜和热重分析仪对颗粒进行分析表征。对FW-110倍低矿化度水与改性纳米ZrO2结合的纳米流体进行分散稳定性、界面性质和驱油效果进行评价。改性纳米流体的分散性由22.9提升至7.6;界面张力进一步降低2 mN/m;岩石表面润湿性进一步向水湿转变;粘附功进一步降低8 J/cm2;增加温度对降低界面张力、接触角和粘附功为正向影响。颗粒浓度在0.005 wt%~0.05 wt%时,最佳浓度为0.02 wt%,此时室内采收率最高,采收率增值12.6%,提供了理论基础,具有明显优势和广阔的推广应用前景。

    Abstract:

    Nanoparticle flooding and low-salinity waterflooding are widely studied by researchers as new and popular enhanced recovery technologies. To further investigate the synergistic effect of ZrO2 nanoparticles and low-salinity water, the low-salinity water is now obtained by diluting the formation water of the Taha oil field by 110 times to obtain 5% additional recovery and is used as the optimal low-salinity water. In order to improve the dispersion of ZrO2 nanoparticles in low-salinity water, a modified ZrO2 nanoparticles by the coupling agent 3-aminopropyltrimethoxysilane was prepared. Infrared spectroscopy, transmission electron microscopy and thermogravimetric analyzer were used to analyze and characterize the particles. Dispersion stability, interfacial properties and oil displacement effect of nanofluids combined with FW-110 times low- salinity water and modified ZrO2 nanoparticles were evaluated. The dispersibility of the modified nanofluid was improved from 22.9 to 7.6; the interfacial tension was further reduced by 2 mN/m; the wettability of the rock surface was further shifted to water-wetness; the work of adhesion was further reduced by 8 J/cm2; and the increase in temperature had a positive effect on the reduction of the interfacial tension, contact angle, and work of adhesion. The optimum concentration of particles was 0.02 wt% at 0.005 wt%~0.05 wt%, when the highest indoor recovery rate was achieved, with a value-added recovery rate of 12.6%, which provided a theoretical basis with obvious advantages and broad prospects for popularization and application.

    参考文献
    相似文献
    引证文献
引用本文
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期: 2024-10-25
  • 最后修改日期: 2024-11-18
  • 录用日期: 2024-12-03
  • 在线发布日期:
  • 出版日期:
点击这里给我发消息

点击这里给我发消息