A power cable underground fishing tool
A technology for fishing tools and cable wells, which is used in wellbore/well components, earth-moving drilling, etc., can solve the problems of high fishing times and operating costs, low efficiency of fishing power cables, etc., so as to reduce the fishing times and operating costs, structure Simple and effective, avoid the effect of losing hands
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Embodiment 1
[0014] Such as figure 1 As shown, the present invention provides a power cable downhole fishing tool, comprising an upper joint 1, the lower end of the upper joint 1 is connected with a cylinder 5, the cylinder 5 is provided with an outer hook rod 7, and the outer hook rod 7 is provided with an outer hook rod 7. Hook teeth 8, inner hook teeth 6 are provided on the inner cylinder wall of the cylinder body 5, the inside of the upper joint 1 is a hollow cavity, and a cover plate 2 coaxial with the upper joint 1 is fixed in the hollow cavity, and the cover plate 2 The lower surface is fixedly connected with a spring 3, the lower end of the spring 3 is connected to the upper end of the outer hook bar 7, and when the spring 3 is in an extended state, the lower end of the outer hook bar 7 extends out of the cylinder 5, and on the wall of the cylinder 5 A plurality of hooks 4 are provided along the axial direction.
[0015] Specifically, during the fishing process, the power cable do...
Embodiment 2
[0019] On the basis of Embodiment 1, it should be noted that, from top to bottom, the hollow cavity consists of an upper end portion 101 with a rectangular cross section, a transition portion 102 with a trapezoidal cross section, and a first diameter reducing portion 103 with a rectangular cross section. , the second reduced diameter part 104 whose cross section is rectangular, and the diameter of the second reduced diameter part 104 is smaller than the diameter of the first reduced diameter part 103, the upper end part 101, the transition part 102, the first reduced diameter part 103, the second reduced diameter part 103 The two reduced diameter portions 104 are respectively symmetrical about the central axis of the upper joint 1 . The cover plate 2 is located at the junction of the transition portion 102 and the first reduced diameter portion 103, the spring 3 is located at the first reduced diameter portion 103, the outer hook 7 is composed of an upper link 701 and a lower l...
Embodiment 3
[0022] On the basis of Embodiment 2, in particular, the inner hook teeth 6 are arranged in a spiral shape on the inner cylinder wall of the cylinder body 5, the outer hook teeth 8 are arranged in a spiral shape on the lower hook rod 702, and the spring 3 is in an elongated state. At this time, the outer hook teeth 8 at the end of the lower hook rod 702 are located outside the cylindrical body 5 . The cable hanging on the outer hook tooth 8 is hung on the hook 4 along with the movement of the outer hook bar 7. As an auxiliary, the cable can also be hung on the inner hook tooth 6, and the cables are hung into the hook 4 and the inner hook tooth as much as possible. 6, in addition, in order to ensure that the cable can smoothly enter the hook 4, when the spring 3 is in an extended state, the outer hook teeth 8 at the end of the lower hook rod 702 are located outside the cylinder 5.
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