| 摘要 |
A bridge plug tool for use in a well, comprising: a tool body (70); a hollow mandrel (26) extending through the tool body, the mandrel having a removable plug (32) in an upper region (37) to prevent from of fluids through the mandrel, the plug comprising a plug locking member (40) that is axially movable between a first position in which it locks the plug inside the mandrel and a second position in which the plug is released from the mandrel and can be removed; a setting sleeve (16) positioned on the tool body; a packer module (18) located below the setting sleeve; an anchor module (20) located blow the packer module; and an end fitting located below the anchor module; wherein the mandrel extends through the sleeve, packer module and anchor module to the end fitting; and wherein the end fitting comprises a first part that is configured for engagement with the mandrel, and a second part that is releasably connected to the first part and moveable between a connected position in which the second part holds the first part in engagement with the mandrel such that the end fitting is secured to the mandrel, and a disconnected position in which second part moves relative to the first part so that the first part is free to disengage from the mandrel, such that when the mandrel is secured to the end fitting, the packer module and anchor module can be held in compression between the setting sleeve and the end fitting, and when the mandrel is released from the end fitting, any such compression is released. |
