CN216110621U

CN216110621U - Small falling object collector

Info

Publication number: CN216110621U
Application number: CN202122574171.3U
Authority: CN
Inventors: 孙广杰; 李文涛; 徐振东; 孙华东; 张宝青; 彭正强
Original assignee: China Oilfield Services Ltd
Current assignee: China Oilfield Services Ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-03-22
Anticipated expiration: 2031-10-25

Abstract

The utility model provides a small falling object collector which comprises a lifting cover and a body, wherein a lifting lug is arranged at the top of the lifting cover, the body is cylindrical, the lifting cover is fixedly connected with a first end of the body, and a second end of the body is horn-shaped. In the process of lifting the production string of the original well, small falling objects can be collected by the collector, and the small falling objects are prevented from continuously falling downwards at positions with large drift diameters such as a vertical pipe.

Description

Small falling object collector

Technical Field

The utility model relates to the technical field of oilfield tools, in particular to a collector for small falling objects applied to the lifting of a downhole production string, and more particularly to a collector for small falling objects used in oilfield operation.

Background

When an original well production string is lifted (lifted upwards) in a well repairing operation, the original well production string is generally lifted continuously to enter a 13-3/8 'vertical pipe when a casing head is lifted, in the process, the space gap in the pipe becomes large after a 9-5/8' casing pipe enters a 13-3/8 'vertical pipe, small pieces such as a cable shield and the like easily fall off, a gap is formed between the lower cable packer and the pipe wall after the lower cable packer enters the 13-3/8' vertical pipe, small pieces can not be stably supported, the small pieces can fall off continuously downwards, and great inconvenience is brought to well repairing construction.

At present, a fisher is usually adopted to salvage underground falling objects generated in the underground operation process, so that the operation cost is increased, and the problem of low salvage success rate also exists.

SUMMERY OF THE UTILITY MODEL

In order to solve part or all of the problems, the utility model provides a small falling object collector, which enables small falling objects to be collected in the process of lifting an original well production string and prevents the small falling objects from continuously falling downwards at large-diameter positions such as a vertical pipe.

The utility model provides a small falling object collector which comprises a lifting cover and a body, wherein a lifting lug is arranged at the top of the lifting cover, the body is cylindrical, the lifting cover is fixedly connected with a first end of the body, and a second end of the body is horn-shaped.

Optionally, the carrying cover is fixed with the first end of the body in a welding, threaded connection or clamping manner.

Optionally, the lifting cover is fixed to the first end of the body in a threaded connection manner, and is provided with a radial set screw.

Optionally, the cross-sectional shape of the lifting cover is T-shaped.

Optionally, an axial through hole is formed in the middle of the lifting cover, and the lower end of the through hole is in a horn shape.

Optionally, two lifting lugs are symmetrically arranged on two sides of the through hole, and the lifting lugs are welded and fixed on the top of the lifting cover.

Optionally, the maximum thickness of the second end of the body is greater than the thickness of the rest of the body.

Optionally, the outer side surface of the second end of the body is provided with a chamfer.

Optionally, the angle of the chamfer is 30 °.

Optionally, a connecting hole is formed in the lifting lug, and the steel wire rope is connected through the connecting hole.

According to the technical scheme, the small falling object collector has the following advantages:

by virtue of the structural design of the small-piece junk collector of the utility model, the small-piece junk can be fixed on the cable-through packer when the pipe string is lifted and simultaneously brought out of the well head during the lifting of the pipe string. The small falling object collector is matched with the lifting pipe column, so that the fishing procedure can be saved, the operation procedure is simplified, and the operation reliability is improved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic view of a litter collector in an embodiment of the utility model;

FIG. 2 is a cross-sectional view of a litter collector in an embodiment of the utility model;

FIG. 3 is a schematic diagram of the construction of a lifting lug of the small junk collector in an embodiment of the present invention;

fig. 4 is a cross-sectional view of a litter collector in an embodiment of the utility model.

Description of reference numerals: 1. lifting the cover; 1-1, through holes; 2. a body; 2-1, a first end; 2-2, a second end; 2-3, chamfering; 3. lifting lugs; 3-1, connecting hole.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

As shown in fig. 1 and 2, the collector for small falling objects according to the embodiment of the present invention includes a lifting cover 1 and a body 2, wherein a lifting lug 3 is disposed on the top of the lifting cover 1, the body 2 is cylindrical, the lifting cover 1 is fixedly connected to a first end 2-1 of the body 2, and a second end 2-2 of the body 2 is trumpet-shaped.

The lifting cover 1 and the first end 2-1 of the body 2 can be fixedly connected in a welding, threaded or clamping manner.

Preferably, as shown in fig. 2, the lifting cap 1 is fixedly connected with the first end 2-1 of the body 2 by a threaded connection, the outer side surface of the lifting cap 1 is provided with an external thread, the inner side surface of the first end 2-1 of the body 2 is provided with an internal thread, and the two are fixedly connected by the external thread and the internal thread.

More preferably, the lifting cover 1 and the first end 2-1 of the body 2 are further provided with radial set screws (not shown in the figure), so that the connection between the body 2 and the lifting cover 1 is more reliable, and the set screws can be provided in plurality.

As shown in FIG. 2, the cross-sectional shape of the lifting cap 1 is T-shaped, that is, a part of the lifting cap 1 extends into the first end 2-1 of the body 2, so that the lifting cap 1 is fixedly connected with the first end 2-1 of the body 2 by a threaded connection.

As shown in figure 2, the middle part of the lifting cover 1 is provided with an axial through hole 1-1, the lower end of the through hole 1-1 is in a horn shape, and the design is such that the pipe column can conveniently pass through the small falling object collector. Two lifting lugs 3 are symmetrically arranged on two sides of the through hole 1-1, and the lifting lugs 3 are fixed on the top of the lifting cover 1 in a welding mode, so that the lifting lugs 3 are firmly and reliably connected with the lifting cover 1 and are not easy to fall off.

As shown in FIG. 3, a connecting hole 3-1 is formed in the lifting lug 3, and the lifting lug 3 is connected with a steel wire rope through the connecting hole 3-1, so that when the small falling object collector is used, the small falling object collector can be placed through the steel wire rope.

If fig. 2 shows that the maximum thickness of the second end 2-2 of the body 2 is greater than the thickness of the rest of the body 2, it is advantageous to provide a chamfer 2-3 on the outer side of the second end 2-2 of the body 2, preferably with an angle of 30 deg..

If shown in fig. 4, the lifting cover 1 is fixedly connected with the first end 2-1 of the body 2 by welding. The lifting cover 1 is flat, and welding can be carried out on the outer side and the inner side of the first end 2-1 of the lifting cover 1 and the body 2, so that the firmness of connection is improved.

The working principle of the small falling object collector of the embodiment is as follows:

in the process of lifting the production string of the original well, if small pieces such as a cable shield fall into the well, the small piece falling object collector of the embodiment is connected by a steel wire rope, and the small piece falling object collector is thrown to the position of the casing head by the steel wire rope from the well head. Since the second end 2-2 of the body 2 is flared, the small drop collector is easily lowered. And continuously lifting the original well pipe column, when the cable passing packer rises to the position of the casing head, covering the small falling object collector on the cable passing packer, fixing the small falling object on the cable passing packer, enabling the small falling object collector to enter the vertical pipe along with the cable passing packer to continuously rise, and finally bringing the small falling object collector and the cable shield to the well head together. Because the outer side surface of the second end 2-2 of the body 2 is provided with the 30-degree chamfer 2-3, the small falling object collector is more smoothly lifted.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the utility model pertains

In the description of the present application, it is to be understood that the terms "central," "radial," "axial," "depth," "width," "upper," "lower," "end," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a smallclothes junk collector, its characterized in that, is including carrying lid and body, the top of carrying the lid sets up the lug, the body is cylindricly, carry the lid with the first end fixed connection of body, the second end of body is tubaeform.

2. The litter collector of claim 1 wherein the carrying lid is secured to the first end of the body by welding, threading, or snapping.

3. The litter collector of claim 1 wherein said carrying lid is threadably secured to said first end of said body and is provided with radial set screws.

4. The litter collector of claim 1 wherein said carrying lid is T-shaped in cross-section.

5. The small piece drop collector as claimed in claim 1, wherein an axial through hole is provided in the middle of the lifting cover, and the lower end of the through hole is flared.

6. The small junk collector as defined in claim 5 wherein two of the lifting lugs are symmetrically disposed on both sides of the through hole and are welded and fixed to the top of the carrying lid.

7. The litter collector of claim 1 wherein the second end of the body has a maximum thickness greater than a thickness of the rest of the body.

8. The litter collector of claim 1 wherein an outer side of the second end of the body is provided with a chamfer.

9. The litter collector of claim 8 wherein said chamfer is at an angle of 30 °.

10. The litter collector as set forth in any one of claims 1 to 9, wherein said lifting lug is provided with a coupling hole through which a wire rope is coupled.