a controllable element is provided to modulate energy in the drill string
and a drill bit attached at the distal end of the drill string
A retrievable drill bit is operatively connected to the drill string.
Multiple vendor tools were integrated and operated in the drill string
The guide member can be inserted into any position along the drill string.
can be moved in the longitudinal direction of the drill string
After mechanically anchored, it is pressured to rotate for cutting the drill string.
Après mécaniquement ancrée, il est mis sous pression pour faire pivoter pour la coupe de la tige de forage.
measuring the vertical displacement s of the drill string at the surface,
forces are measured at a plurality of locations along the drill string
a cet effet, des forces sont mesurées en plusieurs points le long de la colonne de forage
The cased hole is drilled to a desired depth by rotating and vibrating the drill string into the ground.
Le puits tubé est foré à une profondeur souhaitée par rotation et vibration de la tige de forage dans le sol.
aligned with the bore of the drill string and passageways
aligné par rapport à l'alésage de la garniture de forage, ainsi que des passages
The other end of the hollow shaft is connected either directly or indirectly to the drill string.
L'autre extrémité de la tige creuse est reliée directement ou indirectement à la colonne de forage.
This invention is designed to solve the problem of connecting new components to the drill string safely and within a short period of time.
L invention est destinée à résoudre le problème posé par la connexion sûre et rapide de nouveaux composants à la tige de forage.