Drillstring Vibrations: Classic Ideas and Modern Approaches - Wave Propagation in Drilling, Well Logging and Reservoir Applications - page 198

N* Cg* N* Cg*
-499 15.836 1 2.
-479 15.429 21 136.
-459 15.214 41 371.
-439 14.752 61 673.
-419 14.455 81 1031.
-399 14.114 101 1435.
-379 13.729 121 1882.
-359 13.451 141 2367.
-339 12.975 161 2889.
-319 12.585 181 3443.
-299 12.250 201 4030.
-279 11.839 221 4646.
-259 11.357 241 5291.
-239 10.928 261 5963.
-219 10.477 281 6661.
-199 9.9853 301 7385.
-179 9.4590 321 8133.
-159 8.9145 341 8905.
-139 8.3415 361 9700.
-119 7.7158 381 10517.
- 79 6.2870 421 12216.
- 59 5.4315 441 13097.
- 39 4.4168 461 13998.
- 19 3.0855 481 14919.
Table 4.3.1a. Cg * versus axial force.
N* Cg* N* Cg*
-5.0 1.6045 0.0 1.000
-4.8 1.5740 0.2 1.126
-4.6 1.5430 0.4 1.309
-4.4 1.5115 0.6 1.549
-4.2 1.4793 0.8 1.847
-4.0 1.4466 1.0 2.197
-3.8 1.4134 1.2 2.596
-3.6 1.3794 1.4 3.039
-3.4 1.3449 1.6 3.523
-3.2 1.3097 1.8 4.045
-3.0 1.2739 2.0 4.602
-2.8 1.2374 2.2 5.192
-2.6 1.2004 2.4 5.813
-2.4 1.1628 2.6 6.464
-2.2 1.1247 2.8 7.143
-2.0 1.0864 3.0 7.850
-1.8 1.0482 3.2 8.582
-1.6 1.0104 3.4 9.339
-1.4 0.9739 3.6 10.120
-1.2 0.9398 3.8 10.924
-1.0 0.9101 4.0 11.751
-0.8 0.8878 4.2 12.600
-0.6 0.8775 4.4 13.470
-0.4 0.8862 4.6 14.362
-0.2 0.9233 4.8 15.273
Table 4.3.1b. Cg * versus axial force near focus.