Lifting and rotating back-off tool
A tool and undercut technology, which is applied in wellbore/well parts, earthwork drilling and production, etc., can solve the problems of complex undercut and jam release procedures, time-consuming and labor-intensive procedures, and achieve the effects of reasonable structure, convenient use, and reduced friction
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[0021] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.
[0022] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the description attached to the description. figure 1 For example, the positional relationship of front, rear, top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the description.
[0023] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:
[0024] as attached figure 1 , 2 , 3, 4, and 5, the lifting and rotating undercut tool includes an upper joint 1, a mandrel, a pressure cap 4, an outer cylinder 5, a ratchet cylinder 6, a guide rod 7 and a support ring 28, and the mandrel includes an upper The connecting s...
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