CN219197288U

CN219197288U - Sliding sleeve capable of switching channels

Info

Publication number: CN219197288U
Application number: CN202223098208.0U
Authority: CN
Inventors: 翟志军
Original assignee: Tianjin Wante Energy Technology Co ltd
Current assignee: Tianjin Wante Energy Technology Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-06-16
Anticipated expiration: 2032-11-22

Abstract

The utility model discloses a sliding sleeve capable of switching channels, which comprises an upper joint, wherein a sliding sleeve main body is arranged on the right side of the upper joint in a threaded manner, an inner sliding sleeve is arranged on the inner side of the sliding sleeve main body in a sliding manner, a sand control screen pipe is arranged on the right side of the sliding sleeve main body in a threaded manner, a large-flow-passage fracturing window is formed in the sliding sleeve main body, production windows are formed in the right side of the large-flow-passage fracturing window in the sliding sleeve main body, scraping rings are arranged on the left side and the right side of the inner sliding sleeve respectively, C-shaped rings are arranged in the middle of the inner sliding sleeve, a plurality of sliding sealing rings are arranged on the left side and the right side of the C-shaped rings on the inner sliding sleeve respectively, and a fluid control valve is arranged at the production window. When the sliding sleeve is used, the sliding sleeve is provided with two channels, namely the large runner fracturing window and the production window, the large runner fracturing window is used for fracturing during fracturing, and the production window is used for controlling the production speed of the production layer, so that the sliding sleeve has the advantage of controlling the formation production in advance.

Description

Sliding sleeve capable of switching channels

Technical Field

The utility model relates to the technical field of sliding sleeves, in particular to a sliding sleeve with a switchable channel.

Background

Fracturing slips are widely used in current low permeability reservoirs because the low permeability reservoirs all require the permeability of the formation to be improved by staged fracturing to allow for significant yield improvements. The fracturing sliding sleeve is used as an effective fracturing tool for segmented acidizing fracturing. Conventional fracturing sliding sleeve can go into the sliding sleeve of a plurality of different ball seat sizes in individual well, drops into the fracturing ball of equidimension in proper order through ground, opens the fracturing window of sliding sleeve in proper order, reforms transform the stratum step by step. After the transformation is finished, the low-density fracturing balls can be flushed out of the wellhead under the action of flowback fluid, so that the exploitation of stratum oil and gas reservoirs is realized. After the conventional fracturing sliding sleeve is opened, the sliding sleeve still uses a fracturing window to produce, and the production of the stratum cannot be effectively controlled, namely if the stratum produces water rather than oil, the conventional fracturing sliding sleeve cannot control water shutoff and cannot increase the oil yield, so that after the fracturing is finished, if a certain stratum is discharged, the water viscosity is lower than that of the oil, the whole well is flooded, and the oil yield is reduced.

Disclosure of Invention

The present utility model is directed to a sliding sleeve with switchable channels, so as to solve the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a sliding sleeve of switchable passageway, includes the top connection, the right side screw thread of top connection is provided with the sliding sleeve main part, the inboard slip of sliding sleeve main part is provided with the inner sliding sleeve, the right side screw thread of sliding sleeve main part is provided with sand control screen pipe, the big runner fracturing window has been seted up in the sliding sleeve main part, the right side of big runner fracturing window is provided with production window in the sliding sleeve main part.

Preferably, scraping rings are arranged on the left side and the right side of the inner sliding sleeve, a C-shaped ring is arranged in the middle of the inner sliding sleeve, and a plurality of sliding sealing rings are arranged on the left side and the right side of the C-shaped ring on the inner sliding sleeve.

Preferably, a fluid control valve is installed at the production window.

Preferably, an O-shaped ring is arranged at the threaded connection part of the upper joint and the sliding sleeve main body.

Preferably, a plurality of fastening screws are arranged on the outer side of the sand control screen, and one ends of the fastening screws are connected with the sliding sleeve main body.

Compared with the prior art, the utility model has the beneficial effects that:

when the sliding sleeve is used, the sliding sleeve is provided with two channels, namely the large runner fracturing window and the production window, the large runner fracturing window is used for fracturing during fracturing, and the production window is used for controlling the production speed of the production layer, so that the sliding sleeve has the advantage of controlling the formation production in advance.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

FIG. 2 is a schematic cross-sectional view of a large flow path fracturing window of the present utility model with the production window open and closed;

FIG. 3 is a schematic cross-sectional view of the present utility model with the production window open and the large flow passage fracturing window closed.

In the figure: 1. an upper joint; 2. a sliding sleeve body; 3. an inner sliding sleeve; 4. sand control screen pipe; 5. a large runner fracturing window; 6. a production window; 7. a scraping ring; 8. a C-ring; 9. sliding seal ring; 10. a fluid control valve; 11. an O-ring; 12. and (5) fastening a screw.

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. 1-3, the present utility model provides a technical solution: the sliding sleeve with the switchable channels comprises an upper joint 1, wherein a sliding sleeve main body 2 is arranged on the right side of the upper joint 1 in a threaded manner, an inner sliding sleeve 3 is arranged on the inner sliding side of the sliding sleeve main body 2 in a sliding manner, a sand control screen 4 is arranged on the right side of the sliding sleeve main body 2 in a threaded manner, a large-flow-passage fracturing window 5 is formed in the sliding sleeve main body 2, a production window 6 is formed in the right side of the large-flow-passage fracturing window 5 in the sliding sleeve main body 2, and formation output is controlled in advance through switching of the two channels of the large-flow-passage fracturing window 5 and the production window 6;

the scraping rings 7 are arranged on the left side and the right side of the inner sliding sleeve 3, the C-shaped ring 8 is arranged in the middle of the inner sliding sleeve 3, the plurality of sliding sealing rings 9 are arranged on the left side and the right side of the C-shaped ring 8 on the inner sliding sleeve 3, and the sliding sealing rings 9 enable the tightness between the inner sliding sleeve 3 and the sliding sleeve main body 2 to be better; a fluid control valve 10 is arranged at the production window 6 and can control the fluid passing through the production window 6; an O-shaped ring 11 is arranged at the threaded connection part of the upper joint 1 and the sliding sleeve main body 2, and the sealing property between the upper joint 1 and the sliding sleeve main body 2 is better through the O-shaped ring 11; the outside of sand control screen 4 is installed a plurality of fastening screw 12, and the one end and the sliding sleeve main part 2 of fastening screw 12 are connected, make sand control screen 4 and sliding sleeve main part 2 be connected inseparabler through fastening screw 12.

Working principle: when the large-flow-passage fracturing window and the production window are used, the sliding sleeve main body 2 is put into a well during construction, at the moment, the large-flow-passage fracturing window 5 and the production window 6 of the sliding sleeve main body 2 are in a closed state, the state is named as a first state, after the sliding sleeve main body 2 moves down to a proper position, the inner sliding sleeve 3 is pushed down to enable the inner sliding sleeve 3 to move down until the large-flow-passage fracturing window 5 on the sliding sleeve main body 2 is exposed, the production window 6 is closed, at the moment, fracturing or acidizing construction can be carried out, the state is named as a second state, after fracturing is finished, the inner sliding sleeve 3 is pushed up to enable the inner sliding sleeve 3 to move up, at the moment, the large-flow-passage fracturing window 5 is closed, the production window 6 is opened, and at the moment, the state is named as a third state. During fracturing, the fracturing channel with a large runner is utilized to fracture, the fracturing effect is improved, during production, production is carried out through a special production channel provided with an ICD or AICD fluid control valve 10, and liquid at the bottom of the well is filtered through the sand control screen 4 and flows into the production channel through a runner groove, and then flows into the production oil pipe. ICD and AICD can distinguish the property of the output according to the viscosity of the output, and then the size of the production channel is controlled, so that the purposes of high oil yield and low water yield are achieved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 sliding sleeve of switchable passageway, includes top connection (1), its characterized in that: the novel sand control device is characterized in that a sliding sleeve main body (2) is arranged on the right side thread of the upper joint (1), an inner sliding sleeve (3) is slidably arranged on the inner side of the sliding sleeve main body (2), a sand control screen (4) is arranged on the right side thread of the sliding sleeve main body (2), a large runner fracturing window (5) is formed in the sliding sleeve main body (2), and a production window (6) is formed in the right side of the large runner fracturing window (5) in the sliding sleeve main body (2).

2. A switchable sliding sleeve according to claim 1, wherein: scraping rings (7) are arranged on the left side and the right side of the inner sliding sleeve (3), a C-shaped ring (8) is arranged in the middle of the inner sliding sleeve (3), and a plurality of sliding sealing rings (9) are arranged on the left side and the right side of the C-shaped ring (8) on the inner sliding sleeve (3).

3. A switchable sliding sleeve according to claim 2, wherein: a fluid control valve (10) is arranged at the production window (6).

4. A switchable sliding sleeve according to claim 1, wherein: an O-shaped ring (11) is arranged at the threaded connection part of the upper joint (1) and the sliding sleeve main body (2).

5. A switchable sliding sleeve according to claim 1, wherein: a plurality of fastening screws (12) are arranged on the outer side of the sand control screen tube (4), and one ends of the fastening screws (12) are connected with the sliding sleeve main body (2).