Journal of Hydrodynamics

, Volume 30, Issue 5, pp 943–949 | Cite as

Axial laminar velocity field calculation and optimization for power-law fluid in eccentric annulus with cutting bed

  • Yong-hai Gao (高永海)Email author
  • Ye Chen (陈野)
  • De-jun Cai (蔡德军)
  • Hua-qing Liu (刘华清)
  • Cheng-gui Liu (刘承贵)
  • Qing-yong Li (李庆永)


The formation of a cutting bed in an annulus involves safety problems in drilling especially in the horizontal well and the directional well. In this work, three axial laminar velocity field calculation models for the power-law fluid in an annulus are modified by considering the effect of the cutting bed. The proposed models are employed to numerically simulate the annulus flow with the cutting bed. Verified by the experimental data in literature, all of them can be applied to the situation of the annulus flow with the cutting bed. The modified concentric annulus model enjoys the best performance, while the flat channel flow model has the worst performance.

Key words

Eccentric annulus power-law fluid axial laminar velocity field cutting bed 


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Copyright information

© China Ship Scientific Research Center 2018

Authors and Affiliations

  • Yong-hai Gao (高永海)
    • 1
    • 2
    Email author
  • Ye Chen (陈野)
    • 1
    • 2
  • De-jun Cai (蔡德军)
    • 3
  • Hua-qing Liu (刘华清)
    • 3
  • Cheng-gui Liu (刘承贵)
    • 3
  • Qing-yong Li (李庆永)
    • 3
  1. 1.School of Petroleum EngineeringChina University of Petroleum (East China)QingdaoChina
  2. 2.National Engineering Laboratory for Testing and Detection Technology of Subsea EquipmentsQingdaoChina
  3. 3.Drilling DepartmentCNPC Offshore Engineering Company LimitedTianjinChina

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