CN216553853U - A salvage barrel that is used for short light thin junk of oil drilling irregular shape - Google Patents

Abstract

The utility model relates to the technical field of drilling, in particular to a fishing barrel for short and thin falling objects with irregular shapes in petroleum drilling. Including an overshot body, overshot body upper end is equipped with the joint that is used for connecting the drilling tool, overshot body bottom is equipped with the guide shoe, overshot body inner wall is equipped with flexible silk layer, flexible silk layer is including the flexibility silk that encircles overshot body inner wall evenly distributed. Aiming at the falling objects with irregular shapes, short, light and thin, the fishing tool has better fishing effect.

Description

A salvage barrel that is used for short light thin junk of oil drilling irregular shape

Technical Field

The utility model relates to the technical field of drilling, in particular to a fishing barrel for short and thin falling objects with irregular shapes in petroleum drilling.

Background

When the underground operation is carried out, the abrasion of the machine is large, so that the rotary head is often broken, or short fish falls into a well, and the fallen objects need to be salvaged by using the fishing barrel.

The existing fishing barrels are various in types, but have poor fishing effect on falling objects with irregular shapes, short, light and thin. The conventional fishing tool is easy to cause secondary damage, and the fishing difficulty is high because the falling objects with irregular shapes, short, light and thin are difficult to enter the fishing barrel.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a fishing barrel for irregular-shaped short and light fallen objects in petroleum drilling, which has a good fishing effect on irregular-shaped short, light and thin fallen objects.

The utility model relates to a fishing barrel for short, light and fine junk with irregular shapes in petroleum drilling, which comprises a fishing barrel body, wherein the upper end of the fishing barrel body is provided with a connector for connecting a drilling tool, the bottom of the fishing barrel body is provided with a guide shoe, the inner wall of the fishing barrel body is provided with a flexible wire layer, and the flexible wire layer comprises flexible wires which are uniformly distributed around the inner wall of the fishing barrel body.

Preferably, at least two layers of flexible silk layers are arranged on the inner wall of the overshot body.

Preferably, the flexible wire is vertically and fixedly connected with the inner wall of the overshot body.

Preferably, the length of the flexible wire is 30-50% of the radius of the fishing barrel body.

Preferably, one end of the outer wall of the guide shoe, which is close to the bottom, is provided with a wear-resistant layer.

Preferably, the wear-resistant layer is formed by tungsten nitride powder which is welded on the outer wall of the guide shoe.

It is preferred that, the inner wall welded fastening of flexible silk and overshot body.

The utility model has the beneficial effects that:

1. the flexible layer that the flexible silk that is set up by encircleing overshot body inner wall evenly distributed at an overshot inner wall constitutes, and the junk can pass through the deformation of flexible silk when getting into an overshot, makes the junk change inside getting into an overshot smoothly, can salvage irregular shape, short, light, thin junk. Meanwhile, by replacing the fishing barrels with different sizes and the flexible wires with different lengths, 50-200mm junk fishing can be realized, and the fishing tool is suitable for fishing junk within 4000 meters.

2. The inner wall of the overshot is provided with a plurality of layers of flexible silk layers, after falling objects completely enter the overshot, the falling objects can be extruded and fixed by the plurality of layers of flexible silk layers, and the friction between the flexible silk layers and the falling objects can improve the stability of the falling objects in the overshot, so that the falling objects can be further smoothly salvaged.

3. The outer wall of the guide shoe is provided with the wear-resistant layer, so that the wear of the overshot can be reduced.

Drawings

FIG. 1 is a schematic structural diagram of an overshot for petroleum drilling irregular short and light junk;

FIG. 2 is a schematic view of the distribution of flexible filaments according to the present invention;

fig. 3 is a view showing the distribution of tungsten nitride powder on the guide shoe.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Example one

Fig. 1 shows a structural schematic diagram of an overshot for irregular-shaped short and light fine junk in petroleum drilling provided by the preferred embodiment of the present application (fig. 1 shows the first embodiment of the present application), and for convenience of illustration, only the parts related to the present embodiment are shown, and the detailed description is as follows:

the utility model provides a salvage barrel that is used for short light thin junk of oil drilling irregular shape, includes salvage barrel body 1, salvage barrel body 1 upper end is equipped with the joint 2 that is used for connecting the drilling tool, and the knot type of joint 2 is unanimous with the drilling tool knot type, can the direct connection drilling tool. The fishing rod is characterized in that a guide shoe 3 is arranged at the bottom of the fishing rod body, a flexible wire layer 4 is arranged on the inner wall of the fishing rod body 1, and the flexible wire layer 4 comprises flexible wires 401 which are uniformly distributed on the inner wall of the fishing rod body 1. The inner wall of overshot body 1 is equipped with two-layer at least flexible silk layer 4, and the preferred three-layer flexible silk layer 4 of this embodiment, the concrete number of piles can suitably increase and decrease according to the length of overshot body.

As shown in fig. 2, the flexible wire 401 is vertically and fixedly connected with the inner wall of the overshot body 1, that is, the flexible wire 401 is entirely distributed toward the center of the overshot body 1, and the length of the flexible wire 401 is 30-50% of the radius of the overshot body. Every layer of flexible silk layer 4 all has many flexible silks, and 8 flexible silks are preferred to this embodiment, and specific quantity can suitably increase and decrease according to the radius of overshot body. The inner wall of flexible silk 401 and an overshot body 1 can adopt welded fastening, also can set up the screw hole at the inner wall of an overshot body 1, sets up the screw thread that matches with the screw hole at flexible silk tail end, makes flexible silk can with an overshot body 1 inner wall threaded connection to when the junk in the face of equidimension not, realize the flexible silk quick replacement of different length through the screw thread.

As shown in fig. 3, a wear-resistant layer 301 is provided at one end of the outer wall of the guide shoe 3 near the bottom for improving the wear resistance of the guide shoe 3, and the wear-resistant layer 301 in this embodiment is formed by tungsten nitride powder 3011 which is welded on the outer wall of the guide shoe 3. Other forms of wear resistant layers may be used in addition to tungsten nitride powder 3011, as long as wear of the boot 3 is effectively prevented.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (7)

1. An overshot for petroleum drilling irregular-shaped short and light falling objects is characterized in that: including overshot body (1), overshot body (1) upper end is equipped with joint (2) that are used for connecting the drilling tool, overshot body bottom is equipped with guide shoe (3), overshot body (1) inner wall is equipped with flexible silk layer (4), flexible silk layer (4) are including surrounding overshot body (1) inner wall evenly distributed's flexible silk (401).

2. The overshot for petroleum drilling irregular shaped short and light junk according to claim 1, characterized in that: the inner wall of the overshot body (1) is provided with at least two layers of flexible silk layers (4).

3. The overshot for petroleum drilling irregular shaped short and light junk according to claim 1, characterized in that: the flexible wire (401) is vertically and fixedly connected with the inner wall of the overshot body (1).

4. The overshot for petroleum drilling irregular shaped short and light junk according to claim 1, characterized in that: the length of the flexible wire (401) is 30-50% of the radius of the fishing barrel body.

5. The overshot for petroleum drilling irregular shaped short and light junk according to claim 1, characterized in that: and one end of the outer wall of the guide shoe (3) close to the bottom is provided with a wear-resistant layer (301).

6. The overshot for petroleum drilling irregular shaped short and light junk according to claim 5, characterized in that: the wear-resistant layer (301) is formed by tungsten nitride powder (3011) which is welded on the outer wall of the guide shoe (3).

7. The overshot for petroleum drilling irregular shaped short and light junk according to claim 1, characterized in that: the flexible wire (401) is fixed with the inner wall of the overshot body (1) in a welding mode.

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