| 摘要 |
<p>The present invention generally relates to disconnects for use in a wellbore to separate a tubular string from a stuck wellbore component. In one aspect, the invention includes a disconnect (100) with a first portion (101) and a second portion (109) and a lock nut (146) preventing the separation of the two portions. When a predetermined fluid force is applied to a piston in the disconnect, a tensile sleeve (122) fails and the first and second portions of the disconnect separate, thereby leaving a portion of the disconnect in the wellbore with the stuck component. In one embodiment, the tensile sleeve's failure permits an annular piston (130) to dislodge a wedge sleeve (150) from the lock nut, thereby permitting separation of the first and second portion of the disconnect.</p> |
