Three-dimension drilling stem strength analysis based on considering the torsion load and studies deformation, bend-moment, stress, the distribution characteristics of RWD BHA was made .

• 在考虑扭转载荷的基础上进行的三维钻柱组合强度分析，对随钻扩眼下部钻具组合的变形、钻具组合的弯矩和应力大小及其分布规律进行了研究。