CN212359696U

CN212359696U - Fishing tool for objects falling from well bottom

Info

Publication number: CN212359696U
Application number: CN202022036590.7U
Authority: CN
Inventors: 陈卡; 于玉; 范传征; 李川; 张亚伟; 张思伟; 席二宣; 方平; 刘凯
Original assignee: Chexplor Resource Exploration Technology Co ltd
Current assignee: Chexplor Resource Exploration Technology Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-01-15
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses a thing fisher drops in shaft bottom, including salvaging the body, salvaging the body inner wall and being equipped with the strong magnetism that the array distributes, salvaging the body bottom and being equipped with the reinforcing bar rod, the reinforcing bar rod is the arc, salvages the body and still is equipped with the carbide that the axial array distributes and bores the tooth, topmost strong magnetism does not exceed and salvages body edge highest point, reinforcing bar rod length is no longer than and salvages body girth fourth, the reinforcing bar rod welding is in salvaging the body bottom, welding length is greater than ten centimeters, the same radian of the part reinforcing bar rod that does not weld and salvaging the body, the reinforcing bar rod diameter is less than 1.5cm, and the part vertical projection length of the part of the reinforcing bar rod that does not weld is less than sleeve pipe diameter fourth, the body transverse diameter is salvaged to reinforcing bar rod welding part perpendicular. The utility model discloses salvage the thing that drops, make the thing that drops get into and salvage in the bucket by strong magnetism absorption in the pipe wall, take out the well, avoid causing the influence to the drilling time limit for a project.

Description

Fishing tool for objects falling from well bottom

Technical Field

The utility model relates to an exploration drilling field specifically is a shaft bottom junk fisher.

Background

The bore diameter of a large-bore hole is large, the drilling safety risk is high, in the drilling process, more equipment, parts, auxiliary equipment and tools are needed, in addition, the tool use frequency is high in the scaling process, the sizes are different, drilling fluid is easy to adhere to a re-drilling platform, workers' clothes and gloves are easy to cause that orifice objects fall into the hole, and hole accidents are caused, in addition, in the drilling process, if severe weather is met, the risk of orifice falling objects is easy to cause, basically, all wells can determine a coal bed or mark layer positions only through logging in the drilling process, in the logging process, instruments fall off due to logging ropes or other reasons in the hole, some accidents are caused, care is taken, the accident occurrence rate can be reduced, and the accidents cannot be eradicated, and in order to solve the problem, a fisher for the falling objects in the hole is provided, to help the drilling process proceed smoothly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shaft bottom junk fisher drives through the drilling tool and salvages near the bucket goes down the thing that drops, ensures the thing that drops after slow rotation and gets into the salvage bucket, salvages the thing that drops, makes the thing that drops get into in the salvage bucket by strong magnetism absorption in the pipe wall, takes out the well, avoids causing the influence to the drilling time limit for a project, improves work efficiency simultaneously.

The purpose of the utility model can be realized by the following technical scheme:

a salvager for objects falling from a well bottom comprises a salvage body, wherein strong magnets distributed in an array mode are arranged on the inner wall of the salvage body, a steel bar rod is arranged at the bottom of the salvage body and is arc-shaped, and hard alloy drill teeth distributed in an axial array mode are further arranged on the salvage body;

furthermore, the strong magnetism at the uppermost end is not higher than the highest position of the edge of the fishing body, and the length of the reinforcing bar does not exceed one fourth of the perimeter of the fishing body.

Furthermore, the reinforcing steel bar is welded at the bottom of the fishing body, the welding length is longer than ten centimeters, the non-welded part of the reinforcing steel bar has the same radian with the fishing body, the diameter of the reinforcing steel bar is smaller than 1.5cm, and the vertical projection length of the non-welded part of the reinforcing steel bar is smaller than one fourth of the diameter of the sleeve.

Furthermore, the welding part of the reinforcing steel bar is perpendicular to the transverse diameter of the fishing body, and the welding part of the reinforcing steel bar starts to be 10-20 cm above the bottom of the fishing body.

The utility model has the advantages that:

1. the utility model discloses a drilling tool drives salvage bucket and goes down near the thing that drops, ensures that the thing that drops gets into salvage bucket after slowly rotating, salvages the thing that drops, makes the thing that drops get into in salvage bucket and is adsorbed by strong magnetism on the pipe wall, brings out the well, avoids causing the influence to the drilling time limit for a project, improves work efficiency simultaneously;

2. the utility model discloses simple structure, the operation of the operation personnel of being convenient for salvages efficiently.

Drawings

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a sectional view of the structure of the part of the fishing tool for the dropped objects in the well bottom.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

A fisher for objects dropped from the bottom of a well comprises a fishing body 1, as shown in figure 1, the inner wall of the fishing body 1 is provided with strong magnets 2 distributed in an array, the bottom of the fishing body 1 is provided with a steel bar rod 3, the steel bar rod 3 is arc-shaped, the fishing body 1 is also provided with hard alloy drill teeth 4 distributed in an axial array, the top strong magnet 2 is not higher than the highest position of the edge of the fishing body 1, the length of the steel bar rod 3 is not more than one fourth of the circumference of the fishing body 1, the steel bar rod 3 is welded at the bottom of the fishing body 1, the welding length is more than ten centimeters, the steel bar rod 3 at the non-welded part has the same radian as the fishing body 1, the diameter, the vertical projection length of the part of the reinforcing steel bar 3 which is not welded is less than one fourth of the diameter of the casing, the welded part of the reinforcing steel bar 3 is vertical to the transverse diameter of the fishing body 1, and the welded part of the reinforcing steel bar 3 starts from 10-20 cm above the bottom of the fishing body 1.

When in use:

the method comprises the following steps: lowering the salvaging body 1 to the bottom of the approaching hole, and confirming the position of the falling object;

step two: after the pump is sent, the fishing body 1 is manually rotated to ensure that the top end of the fallen object enters the interior of the fishing body 1;

step three: the drilling tool is vertical to the lower drilling tool without rotating, secondary accidents are prevented, and the whole falling object is slowly lifted away from the well bottom after entering the fishing barrel;

step four: and (4) carrying out a drill lifting check to check whether the falling logging instrument and tool are brought out of the fishing barrel, and not fishing and circulating the steps from the first step to the third step until the falling logging instrument and tool are fished.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a thing fisher that drops in shaft bottom, includes salvage body (1), its characterized in that, salvage body (1) inner wall is equipped with strong magnetism (2) of array distribution, salvages body (1) bottom and is equipped with reinforcing bar (3), and reinforcing bar (3) are the arc, salvages body (1) and still is equipped with carbide drill tooth (4) that axial array distributes.

2. A downhole junk fisher according to claim 1, wherein the uppermost strong magnet (2) is not higher than the highest edge of the fisher body (1), and the length of the reinforcing bar (3) is not more than one quarter of the circumference of the fisher body (1).

3. A downhole junk fisher according to claim 1, wherein the steel bar (3) is welded at the bottom of the fisher body (1), the welding length is more than ten centimeters, the non-welded part of the steel bar (3) has the same arc as the fisher body (1), the diameter of the steel bar (3) is less than 1.5cm, and the vertical projection length of the non-welded part of the steel bar (3) is less than one fourth of the diameter of the casing.

4. A downhole junk fisher according to claim 1, wherein the welded part of the steel bar (3) is perpendicular to the transverse diameter of the fishing body (1), and the welded part of the steel bar (3) starts 10-20 cm above the bottom of the fishing body (1).