Table 1 The displacement boundary conditions of the flexible drilling tool.
Items | Constrained position | UX | UY | UZ | ROTX | ROTY | ROTZ |
|---|---|---|---|---|---|---|---|
Flexible drill pipe | Top | √ | √ | √ | – | – | – |
Bottom | √ | √ | – | – | – | ||
Guide pipe | Top | √ | √ | √ | – | – | – |
Bottom | √ | √ | – | – | – | ||
Wellbore | All nodes | √ | √ | √ | √ | √ | √ |
