CN218953286U

CN218953286U - Reverse fracturing sand prevention completion integrated device with self-cleaning function

Info

Publication number: CN218953286U
Application number: CN202222917481.5U
Authority: CN
Inventors: 李兴辉; 陶华; 闫丽伟; 孟洁; 孙鑫
Original assignee: Tianjin Yichuang Energy Technology Co ltd
Current assignee: Tianjin Yichuang Energy Technology Co ltd
Priority date: 2022-03-28
Filing date: 2022-10-31
Publication date: 2023-05-02
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a reverse fracturing sand prevention completion integrated device with a self-cleaning function, which comprises a reverse packer and a reverse completion device, wherein the bottom of the reverse packer is provided with the reverse completion device; the reverse well completion device comprises a first sieve tube, a first sieve mesh, a second sieve tube and a second sieve mesh, wherein the first sieve tube is installed at the bottom of the reverse packer, the second sieve tube is connected to the inside of the first sieve tube in a rotating mode, the first sieve mesh is arranged on the inner wall of the first sieve tube, the second sieve mesh is arranged on the inner wall of the second sieve tube, the second sieve tube can be rotated through the arranged first sieve tube, the first sieve mesh, the second sieve tube and the second sieve mesh, the alignment degree of the first sieve tube and the second sieve mesh is controlled, the higher the alignment degree is, the larger the first sieve mesh can flow area is, the lower the alignment degree is, the first sieve mesh can flow area is smaller, and therefore the size of the sieve mesh can be adjusted, and the reverse well completion device is suitable for various stratum sand grains.

Description

Reverse fracturing sand prevention completion integrated device with self-cleaning function

Technical Field

The utility model relates to the technical field of oil layer fracturing, in particular to a reverse fracturing sand prevention completion integrated device with a self-cleaning function.

Background

In the petroleum field, fracturing refers to a method for forming cracks on hydrocarbon reservoirs by utilizing the hydraulic action in the oil or gas production process, and is also called hydraulic fracturing, wherein the fracturing is to artificially crack the stratum, improve the flowing environment of oil in the underground, increase the yield of an oil well, play an important role in improving the flowing condition of the bottom of the oil well, slowing down the interlayer and improving the oil layer utilization condition, and in petroleum drilling and production operation, a screen pipe is an important device and the main function of the screen pipe is sand prevention.

The size of the sieve holes cannot be changed by the existing sieve tube, adjustment cannot be performed according to the size of stratum sand grains, and the practicability is poor.

Disclosure of Invention

The utility model aims to provide a reverse fracturing sand prevention completion integrated device with a self-cleaning function, which aims to solve the problems that the size of a screen hole cannot be changed, adjustment cannot be performed according to the size of stratum sand grains and the practicability is poor in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the reverse fracturing sand prevention completion integrated device with the self-cleaning function comprises a reverse packer and a reverse completion device, wherein the bottom of the reverse packer is provided with the reverse completion device;

the reverse well completion device comprises a first sieve tube, a first sieve mesh, a second sieve tube and a second sieve mesh, wherein the first sieve tube is installed at the bottom of the reverse packer, the second sieve tube is connected with the inside of the first sieve tube in a rotating mode, the first sieve mesh is arranged on the inner wall of the first sieve tube, and the second sieve mesh is arranged on the inner wall of the second sieve tube.

As a preferred embodiment of the present utility model, the cross sections of the first screen holes and the second screen holes are trapezoidal.

As a preferred embodiment of the present utility model, the first and second mesh openings have the same cross-sectional size.

As a preferred aspect of the present utility model, the diameter of the first screen is greater than the diameter of the second screen.

As a preferable scheme of the utility model, the bottom of the first screen pipe is provided with a reverse fracturing tool.

As a preferred embodiment of the present utility model, a tubing string is mounted on top of the first screen.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the second sieve tube can be rotated through the first sieve tube, the second sieve tube and the second sieve tube, the alignment degree of the first sieve tube and the second sieve tube is controlled, the higher the alignment degree is, the larger the flowable area of the first sieve tube is, the lower the alignment degree is, the smaller the flowable area of the first sieve tube is, so that the size of the sieve tube can be adjusted, and the method is suitable for sand grains of various stratums.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a front cross-sectional view of a first screen of the present utility model;

FIG. 3 is a top cross-sectional view of a first screen of the present utility model;

FIG. 4 is a front view of a second screen of the present utility model;

fig. 5 is a perspective view of a first screen of the present utility model.

In the figure: 1. a tubing string; 2. a reverse packer; 3. a reverse fracturing tool; 4. a reverse completion device; 41. a first screen; 42. a first screen aperture; 43. a second screen; 44. and a second screen aperture.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the integrated device with the self-cleaning function comprises a reverse packer 2 and a reverse completion device 4, wherein the bottom of the reverse packer 2 is provided with the reverse completion device 4, and the packer is a downhole tool connected onto a downhole tubular column and used for sealing and isolating an oil pipe and an oil gas well casing or an open hole well wall annular space;

the reverse well completion device 4 comprises a first sieve tube 41, a first sieve mesh 42, a second sieve tube 43 and a second sieve mesh 44, wherein the first sieve tube 41 is installed at the bottom of the reverse packer 2, the second sieve tube 43 is connected to the inside rotation of the first sieve tube 41, the first sieve mesh 42 is arranged on the inner wall of the first sieve tube 41, the second sieve mesh 44 is arranged on the inner wall of the second sieve tube 43, the second sieve tube 43 can be rotated through the arranged first sieve tube 41, the first sieve mesh 42, the second sieve tube 43 and the second sieve mesh 44, the alignment degree of the first sieve mesh 42 and the second sieve mesh 44 is controlled, the higher the alignment degree is, the larger the flowable area of the first sieve mesh 42 is, the lower the alignment degree is, the flowable area of the first sieve mesh 42 is smaller, and accordingly the size of the sieve mesh can be adjusted, and the reverse well completion device is suitable for various stratum sand grains.

Wherein the cross-sections of the first sieve holes 42 and the second sieve holes 44 are trapezoidal.

Wherein the first and

second openings

42, 44 are of the same cross-sectional size.

Wherein the diameter of the first screen 41 is greater than the diameter of the second screen 43.

Wherein the bottom of the first screen 41 is provided with a reverse fracturing tool 3.

Wherein the tubing string 1 is installed on top of the first screen 41.

Specifically, when the screen assembly is used, the second screen pipe 43 is rotated, the second screen pipe 43 enables the second screen hole 44 to rotate, the flowable area of the first screen hole 42 is controlled according to the alignment degree of the first screen hole 42 and the second screen hole 44, the higher the alignment degree is, the larger the flowable area of the first screen hole 42 is, the lower the alignment degree is, the smaller the flowable area of the first screen hole 42 is, and therefore the size of the screen hole can be adjusted, and the screen assembly is further suitable for various stratum sand grains.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a reverse fracturing sand control completion integrated device with self-cleaning function, includes reverse packer (2) and reverse completion device (4), its characterized in that: the bottom of the reverse packer (2) is provided with a reverse well completion device (4);

the reverse well completion device (4) comprises a first sieve tube (41), a first sieve mesh (42), a second sieve tube (43) and a second sieve mesh (44), wherein the first sieve tube (41) is installed at the bottom of the reverse packer (2), the second sieve tube (43) is connected with the first sieve tube (41) in a rotating mode, the first sieve mesh (42) is arranged on the inner wall of the first sieve tube (41), and the second sieve mesh (44) is arranged on the inner wall of the second sieve tube (43).

2. The reverse fracturing sand control completion integrated device with self-cleaning function according to claim 1, wherein: the cross sections of the first sieve holes (42) and the second sieve holes (44) are trapezoidal.

3. The reverse fracturing sand control completion integrated device with self-cleaning function according to claim 1, wherein: the first screen holes (42) and the second screen holes (44) have the same cross section.

4. The reverse fracturing sand control completion integrated device with self-cleaning function according to claim 1, wherein: the diameter of the first screen (41) is greater than the diameter of the second screen (43).

5. The reverse fracturing sand control completion integrated device with self-cleaning function according to claim 1, wherein: the bottom of the first screen pipe (41) is provided with a reverse fracturing tool (3).

6. The reverse fracturing sand control completion integrated device with self-cleaning function according to claim 1, wherein: and the top of the first screen pipe (41) is provided with a tubing string (1).