单牙轮钻头井底轨迹分析

The well-bottom trace analysis of one-cone bit

牙轮钻头的井底轨迹是牙轮钻头破岩的重要特征 ,以前钻头的井底轨迹主要通过实验获得 ,费时费力。文章通过计算机仿真来绘制单牙轮钻头的井底轨迹 ,并分析了钻头结构参数对井底轨迹形成的影响 ,找出了影响井底轨迹形成的主要结构参数 ,单牙轮钻头仿真的井底轨迹与台架试验的井底轨迹进行对比 ,证明仿真结果的正确性、仿真方法的可行性 。

The well-bottom trace of cone bit is the important character. It was formerly attained throughexperiment that was arduous and taking time. In the paper the well-bottom trace of one-cone bit is gainedby computer simulation. It is analyzed how structural parameters of cone bit affect the well-bottom trace,and the major characters are fo und out that affect the well-bottom trace. The well-bottom trace of one-cone bit through computer simulation and that through experiment are compared, testing the right of simulation results and the availability of computer simulation. Some useful advice is given to subsequent bit design.