BHA vibration experiment, based on analysis of forces born by drilling string at bottom hole, is done by imposing 3 typical underground forces on certain combination drilling string.

• BHA振动实验是在分析井下钻柱受到的作用力的基础上，通过对某组合的钻柱施加3种典型的井下作用力进行实验，利用设计的振动测量系统检测并分析数据，得到BHA的邵分振动规律；