Downhole rope fishing tool for oil wells
A technology for oil wells and tools, applied in the fields of oil well fishing tools and downhole fishing rope tools
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Embodiment 1
[0016] Such as figure 1 The shown downhole rope fishing tool for oil wells includes a main body 4, and the main body 4 is axially provided with an installation through groove 6, and a plurality of axially equidistant slippage nets 1 are arranged in the installation through groove 6, and the main body 4 A plurality of fishing rope posts 3 are arranged on both sides of the installation through groove 6. The surface of the fishing rope post 3 is inclined to the main body 4. The circumferential surface of the fishing rope post 3 is provided with a plurality of small barbs 2. Any end of the main body 4 is provided with a connecting head 5, and the connecting head 5 is provided with an internal conical thread.
[0017] When this embodiment is used, the connector 5 of the main body 4 is connected to the connector through the inner conical thread, and the main body 4 is driven to rotate and move up and down through the connector. Driven by the main body 4, it is wrapped tightly on t...
Embodiment 2
[0020] In this embodiment, the following structure is optimized on the basis of Embodiment 1: the sliding screen 1 is detachably arranged in the installation channel 6 .
[0021] In this embodiment, in order to facilitate the replacement of the filter screen 1, and also to facilitate the pouring of the lumps in the filter screen 1, the filter screen 1 and the installation channel 6 are connected in a detachable manner, such as buckles, plugs, bolts, etc. Way to connect, easy to replace and use.
Embodiment 3
[0023] In this embodiment, the filter screen is optimized on the basis of embodiment 1 or embodiment 2, specifically: the filter screen 1 is made of stainless steel.
[0024] In this embodiment, considering that the environment in the oil well is relatively harsh, the slip screen 1 is extremely susceptible to corrosion damage, and at the same time, the slip screen 1 is easily damaged by contact and collision with the falling objects inside during fishing, so the slip screen 1 needs to have good resistance. Corrosion and strength can be used for a long time. Therefore, in order to solve the above problems, the leaking screen 1 is made of stainless steel. Stainless steel is not only corrosion-resistant, but also has high strength.
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