强研磨性地层中PDC钻头井底热-流-固三场耦合研究

祝效华,李聪,刘伟吉,谭宾,徐文

Study on bottom hole thermal-fluid-solid coupling of PDC bit in strong abrasive formation

Xiao-hua ZHU,Cong LI,Wei-ji LIU,Bin TAN,Wen XU

表3 优化前后PDC钻头各钻齿的平均温度对比 (℃)

Table 3 Comparison of average temperature of each drill tooth of PDC bit before and after optimization

刀翼 钻齿 平均温度 温度差 优化前 优化后 1号 1 167.902 172.551 -4.649 2 167.985 171.284 -3.299 3 168.078 163.643 4.435 4 170.823 156.387 14.436 5 172.996 159.441 13.555 6 167.513 148.527 18.986 7 136.651 126.86 9.791 2号 1 168.640 159.256 9.384 2 162.542 151.643 10.899 3 158.731 149.656 9.075 4 155.094 143.478 11.616 5 131.712 123.617 8.095 3号 1 167.027 171.513 -4.486 2 164.193 163.858 0.335 3 171.063 160.673 10.390 4 171.869 153.237 18.632 5 170.680 151.489 19.191 6 160.719 144.442 16.277 7 119.863 109.792 10.071 4号 1 165.547 160.265 5.282 2 154.992 148.523 6.469 3 157.978 154.105 3.873 4 148.514 143.747 4.767 5号 1 157.227 147.069 10.158 2 161.703 153.672 8.031 3 175.257 166.342 8.915 4 165.577 150.519 15.058