...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy & fuels >Wax Deposition in Stratified Oil/Water Flow
【24h】

Wax Deposition in Stratified Oil/Water Flow

机译：分层油/水流中的蜡沉积

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

While diffusion as the major mechanism for wax deposition has been investigated in past decades, wax gelation has mostly been studied in quiescent conditions and is considered to be less significant than diffusion in flow conditions. In this study, gelation has been observed as a major mechanism for the formation of wax deposits in oil/water stratified flow. The experiments are carried out in a state-of-the-art flow loop using a North Sea gas condensate and formation water. The flow map study using reflex camera and X-ray tomography reveals that most of the completely stratified flows occur at low total flow rates of oil and water, which correspond to low shear stresses at the walL It was found that the carbon number distributions of the wax deposits formed in this region have very low fractions of heavy components and are very close to the distribution of the deposit that is only formed by gelation. It was further revealed that the deposit thickness increases with increasing degree of gelation, which corresponds to decreasing shear stress of the fluids at the wall. This finding is consistent with previous studies from single-phase experiments where lower oil velocities are found to result in much higher deposit thicknesses and low wax fractions in the deposits.
机译：尽管在过去的几十年中已经研究了扩散作为蜡沉积的主要机理，但蜡的凝胶化主要是在静态条件下进行的，并且被认为不如流动条件下的扩散重要。在这项研究中，已经观察到凝胶化是在油/水分层流中形成蜡沉积物的主要机制。实验是使用北海凝析气和地层水在最先进的流动回路中进行的。使用反光照相机和X射线断层摄影术进行的流图研究表明，大多数完全分层的流发生在油和水的总流速较低时，这对应于walL处的低剪切应力。发现碳的分布在该区域中形成的蜡沉积物的重组分比例非常低，并且非常接近仅通过胶凝形成的沉积物分布。进一步揭示出，沉积物厚度随着胶凝度的增加而增加，这对应于壁处流体的剪切应力的减小。这一发现与单相实验以前的研究一致，在单相实验中发现较低的油速会导致更高的沉积物厚度和较低的蜡含量。

著录项

  • 来源
    《Energy & fuels》 |2012年第mayajuna期|p.3416-3423|共8页
  • 作者

    Rainer Hoffmann; Lene Amundsen; Zhenyu Huang; Sheng Zheng; H. Scott Fogjer;

  • 作者单位

    Statoil ASA, Porsgrunn, N-3908, Norway;

    Statoil ASA, Porsgrunn, N-3908, Norway;

    Multiphase Solutions Kenny Inc., Houston, Texas 77084, United States;

    Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48103, United States;

    Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48103, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号