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Articles by Yumiao Cai
Total Records ( 1 ) for Yumiao Cai
  Minzheng Jiang , Yumiao Cai , Yu Lu and Dong Wang
  The rod string wear in directional well deflecting section is the key problem to restrict the production efficiency of directional well, the finite element method is adopted according to vibration theory, contact theory and non-linear theory, then the distribution law of contact force between string rod and oil tube will be acquired under the condition of sucker rod actual well conditions. It analyses the relationship between deviation angle and contact force of rod tube and it also comparative analyses the change rule of contact force before and after installing centralizer in the deflecting section. That provides a theoretical basis to slow the wear of directional well sucker rod string and improve its lifetime.
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