| 摘要 |
The present invention relates to a release device (10) for releasably connecting a downhole object (80), such as a running tool or a plug, to a setting tool, the release device extending between a proximal end (10a) adapted to be coupled to the setting tool and a distal end (10b) adapted to be coupled to the downhole object, the release device comprising a base element (16) extending in a longitudinal direction and a connecting element arranged in continuation of the base element, the connecting element (11) constituting the distal end of the release device and being adapted to be coupled to the downhole object, wherein the connecting element is releasably coupled to the base element by an activatable release mechanism (60). Further, the invention relates to a downhole setting tool for setting an object in a wellbore and to a method for disconnecting a downhole object. |
| 主权项 |
1. A release device (10) for releasably connecting a downhole object (80), such as a running tool or a plug, to a setting tool, the release device extending between a proximal end (10a) adapted to be coupled to the setting tool and a distal end (10b) adapted to be coupled to the downhole object, the release device comprising:
a base element (16) extending in a longitudinal direction, and a connecting element (11) arranged in continuation of the base element, the connecting element constituting the distal end of the release device and being adapted to be coupled to the downhole object,wherein the connecting element is releasably coupled to the base element by an activatable release mechanism (60) comprising an activatable locking sleeve (14) slidable in the longitudinal direction and a key element (13) having a plurality of key fingers (131) flexible in an inwards radial direction and adapted to latch onto the connecting element, the inwards flexibility of the key fingers being controlled by the position of the locking sleeve, and wherein the release mechanism further comprises a release spring (15) forcing the locking sleeve and the key element in mutually opposite directions, whereby upon activation of the locking sleeve, the release spring is adapted to force the locking sleeve into a release position, thereby activating the release mechanism and allowing separation of the connecting element from the base element. |
