西南石油大学学报(自然科学版) ›› 1993, Vol. 15 ›› Issue (1): 42-48(5.DOI: 10.3863/j.issn.1000-2634.1993.01.007

• 油气田开发 • 上一篇    下一篇

岩屑床面非均匀颗粒悬浮特性的探讨

王艳辉 罗平亚
  

  1. 石油开发系
  • 收稿日期:1992-09-02 修回日期:1900-01-01 出版日期:1993-02-20 发布日期:1993-02-20

APPROACH TO SUSPENSION PROPERTIES OF NON-HOMOGENEOUS CUTTINGS ON BEDS IN ECCENTRIC ANNULUS

Wang Yanhui Luo Pinya   

  1. Department of oil Exploitation
  • Received:1992-09-02 Revised:1900-01-01 Online:1993-02-20 Published:1993-02-20

摘要: 本稳从单颗球形颗粒在非均匀紊动流场中的沉降特性出发,根据悬浮机理的分析得到了由
环空流场水力及岩屑层移床特性所表征的悬浮条件,井考虑颗粒形状及其浓度效应等因素的影响,最后得到了非球形颗粒阻尼沉降的速度公式。由此评价在给定流场条件下岩屑颗粒悬浮运移的群体特性。

关键词: 环形空间流动, 紊流, 悬浮颗粒, 岩屑, 悬浮搬运

Abstract:

Based in the analysis of suspension mechanism,this paper derived the suspesion condition from the depositional characteristics of single cuttings particle in non-homogeneous turbulence fiels.Which is described by the annular hydraulics and load-bed properties of cuttings,took into consideration the effects of particle shapes and cuttings concentration,and established the formula of the slip velocity of non-globe cuttings damped setting,thus evaluated the macroscopic laws of cuttings-suspension transportation under the given flow in eccentric annulus.


Key words: Annulus flow, Turbulent flow, suspened particle, cuttings, suspension transportation

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