| 摘要 |
An apparatus 10 for automatically stabbing and threading a safety valve 34 into a well pipe 14 to prevent upward flow comprising both automatic and manual modes of operation. The apparatus 10 includes a body 38 that is slidably mounted on an upstanding frame to provide vertical movement of a safety valve 34 carried by a pair of support brackets 94, 96 connected to the body 38. A hydraulic motor 102 and gear train 100 provide rotational movement of the safety valve 34 to thread the safety valve into a well pipe 14 as the body 14 moves the safety valve 14 downward into the well pipe 14. A clamp assembly 12 is connected to a lower portion of the frame and is used to connect the apparatus 10 to the upper end portion of the well pipe. The clamp assembly 12 is connected through an elevator 37 to a hydraulic cylinder 40 to provide horizontal movement of the safety valve 34, and permit horizontal alignment of the well pipe 14 and safety valve 34.
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