摘要
提出一种用于分析底部钻具组合稳定器处的轴向力的新方法 ,即认为轴向力方向应与钻柱切线方向一致 ,其大小不应忽略井壁支反力的影响。在此基础上 ,采用加权余量法推导出一套用于计算底部钻具组合二维受力和变形的新的公式。实例计算结果表明 ,由于该公式考虑影响因素更全面 ,因而其计算结果更具合理性 ,与钻柱实际受力情况更加相符 ,且计算过程更为简便、快捷。
A new method for analyzing the force at the stabilizer of bottom hole assembly is presented. The weight of drill string in the hole was considered as an axial load, and the contact force between drill string and wall of borehole was taken into account. A set of new formulas to calculate the behavior of bottom hole assembly was deduced with the weighting residual method. The exemplification shows that the calculation of the new formulas is reasonable, and the calculated values of force and deformation of bottom hole assembly are in good agreement with the actual values.
出处
《石油大学学报（自然科学版）》
CSCD
北大核心
2002年第3期34-36,40,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
国家杰出青年科学基金资助 (5 982 5 115 )
关键词
石油钻井
底部钻具组合
钻柱力学
二维分析
加权余量法
计算公式
bottom hole assembly
drillstring mechanics
two dimensional analysis
weighting residual method
calculation formulas
