西南石油大学学报(自然科学版) ›› 2002, Vol. 24 ›› Issue (1): 84-86.DOI: 10.3863/j.issn.1000-2634.2002.01.026

• 石油与天然气工程 • 上一篇    下一篇

井底漫流场数值模拟研究

陈小榆1 刘义军2 宋晓健3 孟英峰1 熊继有1
  

  1. (1.西南石油学院石油工程学院,四川南充637001; 2·西南石油学院计算机科学学院; 3·重庆气矿检测中心)
  • 收稿日期:2001-05-21 修回日期:1900-01-01 出版日期:2002-02-20 发布日期:2002-02-20
  • 通讯作者: 陈小榆

NUMERICAL SIMULATION RESEARCH ON BOTTOM-HOLE CROSSFLOW FIELD

CHEN Xiao-yu1 LIU Yi-jun2 SONG Xiao-jian3 et al.


  

  1. (Southwest Petroleum Institute,Nanchong Sichuan 637001,China)
  • Received:2001-05-21 Revised:1900-01-01 Online:2002-02-20 Published:2002-02-20
  • Contact: CHEN Xiao-yu

摘要: 理论研究、台架实验和现场经验表明:井底流场的特性与钻井效率、钻井安全、钻头寿命等有着密切的关系。而喷嘴几何形状、喷嘴布置方式是决定井底漫流场是否合理的关键因素。为了发展有预见性的定量化井底流场研究技术,应用势流理论对井底漫流场进行了数值模拟。模拟结果与台架实验对比表明,井底漫流场数值,模拟能比较客观的反映不同喷嘴组合、不同侧倾角、不同后倾角条件下几股射流的相互作用情况,可为评价井底流场的优劣、钻井效率的高低提供一定的理论依据。

关键词: 井底漫流场, 势流理论, 射流, 数值模拟, 结果分析

Abstract: According to a lot of theoretical studies, laboratory experi-ments and oilfield experience, It was proved that the bottom-hole flow field seriously affected the drilling efficiency, down-hole safety and bit operation life. The geometry shapes and ar-rangements of the nozzle are the key factors to determine that
the bottom-hole flow field is reasonable or not. In order to de-velop the predictable and quantitative research technology, the potential flow theory was used to simulate the bottom-hole crossflow field. Compared the results of the simulation to the experiment in the laboratory, it was shown that the result of the numerical simulation about bottom-hole crossflow field can
describe the cases of several jet interactions under the condition
of the deferent nozzle combinations, different lateral inclina-tions, different rear inclinations. It can provide a certain theory supports for the evaluation of the bottom-hole flow field and drilling efficiency.

Key words: bottom-hole crossflow field, potential flow theory, jet, digital simulation, result analysis

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