| 摘要 |
<p>A tool for activating equipment in a well has an inner cylinder (120) disposed axially slidably and biased in an outer housing, and at least one friction block (121) retained by the inner cylinder. The friction block (121) is biased against the wall of the well, and provides a friction force. At least one latching dog (130) adapted to activate equipment in the well is retained in the inner cylinder (120) and biased radially outwards. When the tool is at a location in the well, the outer housing is pulled upwards, while the inner cylinder is retained by the friction blocks (121). Thereby a sleeve (150) is pulled away from the latching dogs (130), and is prevented by a locking pin (140) from slipping back. The latching dogs are designed and retained such that they can activate equipment when the latching dogs are in their outer position. The tool can be pulled back without affecting equipment in the well, and the latching dog can be turned 180° to deactivate equipment when the tool is conveyed through the well in the opposite direction.</p> |
