CN201486500U - Multifunctional overshot - Google Patents

Abstract

The utility model relates to an oil well fishing tool, in particular to a multifunctional overshot. The technical scheme is as follows: the overshot mainly consists of an upper joint, a cylinder, a saw-toothed internal thread and a guide shoe. One end of the cylinder is connected with the upper joint and the other end thereof is provided with the guide shoe; and the internal cavity of the cylinder is provided with the saw-toothed internal thread. The multifunctional overshot has the benefits of fishing out falling objects such as ropes, rubber sheet and the like by rotating the overshot to rotate the saw-toothed internal thread, having simple structure, lower fabricated cost, convenient use and better fishing effect.

Description

Multi-functional fishing socket

One, technical field:

The utility model relates to a kind of oil field fishing tool, particularly a kind of multi-functional fishing socket.

Two, background technology:

The wells that fall such as lead stamp under the existing well, rope class, rubber stop up pit shaft, the on-the-spot at present fishing socket that uses generally is used to salvage oil pipe, bar class and downhole tool etc., can not realize above-mentioned junk is salvaged, production and underground work are subjected to very big influence, as Chinese utility model patent number is that 200720091745.9 " hollow stem fishing socket " and the patent No. are 97222019.4 " adherent guide shoe formula sucker rod socket ", all be salvaging at sucker rod or hollow stem, and to the salvaging poor effect of junks such as above-mentioned rope class, rubber.

Three, summary of the invention:

The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of multi-functional fishing socket is provided, and can salvage junks such as rope class, rubber.

Its technical scheme is: mainly be made up of top connection, cylindrical shell, zigzag internal thread and guide shoe, an end of described cylindrical shell connects top connection, and the other end is provided with guide shoe, is provided with the zigzag internal thread at the inner chamber of cylindrical shell.

The beneficial effects of the utility model are: by the rotation fishing socket, make the rotation of zigzag internal thread, thereby the fishing junks such as class, rubber of will restricting go out, it is simple in structure, cost of manufacture is lower, and is easy to use, and the salvaging effect is better.

Four, description of drawings:

Accompanying drawing 1 is the figure that partly cuts open of the present utility model;

Among the last figure: top connection (1), cylindrical shell (2), zigzag internal thread (3) and guide shoe (4).

Five, the specific embodiment:

In conjunction with the accompanying drawings 1, the utility model will be further described:

The utility model mainly is made up of top connection 1, cylindrical shell 2, zigzag internal thread 3 and guide shoe 4, and an end of described cylindrical shell 2 connects top connection 1, and the other end is provided with guide shoe 4, is provided with zigzag internal thread 3 at the inner chamber of cylindrical shell 2.During use, the pit shaft with the fishing socket input need be salvaged by the rotation fishing socket, make the rotation of zigzag internal thread, thereby the fishing junks such as class, rubber of will restricting goes out, and easy to use, the salvaging effect is better.

Claims (1)

1. multi-functional fishing socket, it is characterized in that: mainly form by top connection (1), cylindrical shell (2), zigzag internal thread (3) and guide shoe (4), one end of described cylindrical shell (2) connects top connection (1), the other end is provided with guide shoe (4), is provided with zigzag internal thread (3) at the inner chamber of cylindrical shell (2).

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