CN218759819U - Hollow underground anti-scaling short joint device - Google Patents

Abstract

The utility model discloses a hollow downhole anti-scaling nipple device, which relates to the technical field of downhole anti-scaling tools. There are first threaded holes for connecting oil pipes, and several first mesh holes are provided on the installation ring along the circumference, and second threaded holes for connecting tools are opened in the center of several anti-fouling alloy plates, and the first The diameters of the two threaded holes become larger from top to bottom, and the anti-scaling alloy plates are provided with a number of second mesh holes, and the second mesh holes of the anti-scaling alloy plates correspond one by one. Install the front and bottom of the anti-scaling pup joint to realize the connection of the lowering tools. The anti-scaling alloy plate with the second threaded hole of different diameters is used, which is more versatile; when the tool is lowered, the anti-scaling short joint is lowered to prevent the tool from scaling Function.

Description

A hollow downhole anti-scaling pup joint device

technical field

The utility model relates to the technical field of downhole anti-scaling tools, in particular to a hollow downhole anti-scaling nipple device.

Background technique

The anti-scaling nipple is a downhole tool that has emerged in recent years. It is often used at the end of the oil inlet where the oil suction pipe is located in the wellbore. Scale pipe, anti-scaling body and pipe joint in the anti-scaling pipe.

The downhole tools in the prior art are generally fixed at the end of the workover rig or the coiled tubing, and are generally used for fishing of downhole operating devices or other tools. When used in pumping wells with anti-scaling nipple devices, it is generally necessary to remove the anti-scaling nipple. After the festival, it is complicated to install the tools that need to be lowered. In addition, it is impossible to lower the anti-scaling nipple at the same time as lowering the tools. Long-term use will cause fouling of the downhole tools.

Utility model content

In order to solve the above technical problems, the utility model provides a hollow downhole anti-scaling sub-joint device, which aims to realize the front-down without disassembling the anti-scaling sub-joint, realize the connection of the lowering tool, and have stronger versatility; lowering the tool at the same time Scale-proof nipples have the function of anti-scaling for tools.

The concrete technical scheme that the utility model provides is as follows:

The utility model provides an anti-scaling sub-joint device for a hollow underground mine. The center of the ring is provided with a first threaded hole for connecting the oil pipe, and the installation ring is provided with a number of first mesh holes along the circumference, and the center of several anti-fouling alloy plates is provided with a second threaded hole for connecting tools, and the The diameter of the second threaded hole becomes larger from top to bottom, and the anti-scaling alloy plates are provided with a plurality of second mesh holes, and the second mesh holes of the anti-scaling alloy plates correspond to each other.

The beneficial effect of adopting the previous step is: the installation ring is connected to the bottom of the oil pipe, and the second threaded holes on the multiple anti-scaling alloy plates increase sequentially from top to bottom, which is convenient for installing tools with different joint specifications, and the holes on the anti-scaling alloy plates The mesh holes correspond to each other, which can reduce the resistance when moving in its liquid.

Optionally, the mounting ring and the anti-fouling alloy plate are provided with mounting holes for the installation of the connecting device, the connecting device includes a threaded rod and some mounting nuts, and some of the mounting nuts connect the mounting ring and some of the anti-fouling The scale nipples are fixedly assembled together, and the number of mounting nuts is (N+1) times the number of anti-scale alloy plates.

The beneficial effect of adopting the previous step is: the installation ring and the anti-scaling alloy plate are fixed by using the mounting nut and the threaded rod, so that the distance between each anti-scaling alloy plate can be adjusted, and it is convenient to install different numbers of anti-scaling alloy plates. When the tool is working, it is convenient to remove the anti-fouling alloy plate that interferes below.

Optionally, both the first mesh and the second mesh are circular in shape.

The beneficial effect of adopting the previous step is that the first mesh of the mounting ring and the second mesh of the anti-scaling alloy plate are both circular, so that the two are consistent in structure and have strong versatility. In addition, the circular mesh is easy to process.

Optionally, the first mesh shape is circular, and the second mesh shape is polygonal.

The beneficial effect of adopting the previous step is: the shape of the first mesh of the installation ring and the second mesh of the anti-scaling alloy plate are inconsistent, the two can be distinguished, and the upper end of the installation ring and the downhole anti-scaling nipple device can be quickly determined.

Optionally, the mounting ring and the anti-fouling alloy plate are made of metastable alloy, and the threaded rod and the mounting nut are made of stainless steel.

The beneficial effect of adopting the previous step is: the mounting ring and the anti-scaling alloy plate adopt a metastable alloy, which has the advantages of non-magnetism and electricity in the field of anti-scaling, no need for additional energy supply, no consumption itself, and long service life.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a three-dimensional schematic diagram of a hollow downhole anti-scaling nipple device according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of the front structure of a hollow downhole anti-scaling nipple device according to an embodiment of the present invention;

Fig. 3 is A-A sectional view among Fig. 2;

Fig. 4 is a schematic structural view of the anti-fouling alloy plate in the embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, rather than all implementations example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

A hollow downhole anti-scaling nipple device according to an embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 4 .

Referring to Fig. 1 and Fig. 2, a hollow downhole anti-scaling sub-joint device provided by the embodiment of the utility model includes an installation ring 1, and the lower side of the installation ring 1 is provided with three connecting devices 4. An anti-scaling alloy plate 2, specifically, as shown in Figure 4, the center of the mounting ring 1 is provided with the first threaded hole 3 for connecting the oil pipe, and the three anti-scaling alloy plates 2 centers are all provided with the second thread for connecting the tool hole 8, and the diameter of the three second threaded holes 8 becomes larger from top to bottom.

When it is in use, the installation ring 1 is used to connect with the oil pipe and is fixed at the end of the oil pipe, and the anti-scaling alloy plate 2 is connected with the tool that needs to be lowered, so that the installation of the tool can be realized without disassembling the anti-scaling nipple device. More specifically, the mounting ring 1 is connected to the bottom of the oil pipe, and the second threaded holes 8 on the three anti-fouling alloy plates 2 increase in size from top to bottom, which facilitates the installation of tools with different joint specifications.

More specifically, the material of the mounting ring 1 and the anti-scaling alloy plate 2 is a metastable alloy, and the materials of the threaded rod 41 and the mounting nut 42 are all stainless steel; the mounting ring 1 and the anti-scaling alloy plate 2 are made of a metastable alloy, In the field of anti-scaling, stable alloy has the advantages of non-magnetism, no electricity, no need for additional energy supply, no consumption itself, and long service life.

As shown in Figures 3 and 4, the mounting ring 1 is provided with some first mesh holes along the circumference, and some second mesh holes 5 are arranged on the anti-fouling alloy plates, and the second mesh holes 5 of the three anti-fouling alloy plates One to one correspondence. The mesh holes on the anti-scaling alloy plate 2 correspond one by one, which can reduce the resistance when moving in its liquid.

More specifically, as shown in Figure 1, the mounting ring 1 and the anti-fouling alloy plate 2 are all provided with mounting holes for the installation of the connecting device. In addition, the connecting device 4 includes a threaded rod 41 and some mounting nuts 42, and the mounting nuts 42 will The installation ring 1 is fixedly assembled with the three anti-scaling nipples 2. Specifically, the number of nuts is (N+1) times the number of anti-scaling alloy plates, and the number of installation nuts in this embodiment is 8.

As shown in Figure 1, adopt 8 mounting nuts 42 and a threaded rod 41, wherein two mounting nuts 42 are a group, respectively fix the mounting ring 1 and the anti-scaling alloy plate 2, so that each anti-scaling alloy plate 2 The distance between them is adjustable, which is convenient for installing different numbers of anti-scaling alloy plates 2. In addition, when connecting tools, it is convenient to remove the anti-scaling alloy plates 2 that interfere below.

In this embodiment, both the first mesh hole 6 and the second mesh hole 5 are circular in shape, and they are consistent in structure and have strong versatility. In addition, the circular mesh hole is easy to process.

In other embodiments, the shape of the first mesh 6 is circular, and the shape of the second mesh 5 is polygonal; The two are distinguished to quickly determine the upper end of the installation ring 1 and the downhole anti-scaling pup joint device.

The working principle of the utility model is: the installation ring 1 and the anti-scaling alloy plate 2 are made of metastable alloy material, which can play an anti-scaling effect. The plate 2 is connected with the tools that need to be lowered, and the tools can be installed without dismantling the anti-fouling pup joint device.

In addition, eight mounting nuts 42 and a threaded rod 41 are used, wherein two mounting nuts 42 form a group to respectively fix the mounting ring 1 and the anti-fouling alloy plate 2, so that the distance between each anti-fouling alloy plate 2 can be adjusted , it is convenient to install different numbers of anti-scaling alloy plates 2, and in addition, when connecting tools, it is convenient to remove the anti-scaling alloy plates 2 that interfere below.

Apparently, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. In this way, if the modifications and variations of the embodiments of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model also intends to include these modifications and variations.

Claims (5)

1. The hollow underground anti-scale short section device is characterized by comprising a mounting ring, wherein a plurality of anti-scale alloy plates are arranged on the lower side of the mounting ring through a connecting device, a first threaded hole used for being connected with an oil pipe is formed in the center of the mounting ring, a plurality of first meshes are arranged on the mounting ring along the circumferential direction, a second threaded hole used for being connected with a tool is formed in the center of each anti-scale alloy plate, the diameter of each second threaded hole is increased from top to bottom, a plurality of second meshes are arranged on each anti-scale alloy plate, and the second meshes of the anti-scale alloy plates correspond to one another one by one.

2. The hollow downhole anti-scale short section device according to claim 1, wherein the mounting ring and the anti-scale alloy plate are provided with mounting holes for mounting a connecting device, the connecting device comprises a threaded rod and a plurality of mounting nuts, the mounting nuts fixedly assemble the mounting ring and the anti-scale short sections together, and the number of the mounting nuts is N +1 times of the number of the anti-scale alloy plates.

3. The hollow downhole anti-fouling nipple device according to claim 1 or 2, wherein said first and second mesh openings are both circular in shape.

4. The hollow downhole anti-fouling nipple device according to claim 1 or 2, wherein said first mesh shape is circular and said second mesh shape is polygonal.

5. The hollow downhole anti-scale short section device according to claim 2, wherein the mounting ring and the anti-scale alloy plate are made of metastable alloy, and the threaded rod and the mounting nut are made of stainless steel.

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