| 摘要 |
A swivel 400 comprising an upper body 410 coupled to a lower body 420 by a ring member 450, the ring member being connected to the upper body by a plurality of shearable members 455, the lower body having a plurality of teeth members 429 that engage a plurality of teeth members 459 of the ring member, wherein rotation of the upper body is transmitted to the lower body by the ring member and the upper body is rotatable relative to the lower body when the shearable members are sheared. A method for using a work string having a swivel within a wellbore, comprising rotating the work string, rotation of an upper section being transmitted to a lower section by the swivel, actuating a packer element 730 (fig 7) of the work string into engaging the wellbore, the packing element disposed below the swivel and actuating the swivel to rotationally decouple the upper section of the work string from the lower work string. |
