Research Article
Mathematical Modeling and Analysis of Drill String Longitudinal Vibration with Lateral Inertia Effect
Table 1
Material parameters of the drilling string.
| | Parameters name | Results |
| | Density of drill string (kg/m3) | 8000.00 | | Elastic modulus of drill string (MPa) | 2.06 103 | | Stiffness coefficient (N/m) | 1.00 105 | | Longitudinal shear stiffness of drilling fluid inside drill string (Mpa/m) | 0.3 | | Longitudinal shear stiffness of drilling fluid outside drill string (Mpa/m) | 0.1 |
|
|
