Fracturing sliding sleeve assembly structure with RFID tag signal

Abstract

The utility model belongs to the technical field of oil and gas well fracturing well completion, and particularly relates to a fracturing sliding sleeve assembly structure with an RFID tag signal. The oil and gas well sleeve is compact in structure and convenient to install, can be flexibly arranged at any position of an oil and gas well sleeve through the sliding sleeve front connecting section and the sliding sleeve rear connecting section, and is matched with the reasonable arrangement of the slidable piston and the expandable navigation shuttle with corresponding sizes; the expanded navigation shuttle drives the sliding sleeve piston to move along the piston sliding cavity in the sleeve sliding sleeve together, so that the sand blasting hole of the sleeve sliding sleeve at the target fracturing section of the oil and gas well pipeline can be quickly and efficiently opened, and subsequent fracturing construction of the oil and gas well pipeline is facilitated; the RFID reader is installed in the navigation shuttle, the passive RFID tag matched with the RFID reader is attached to the corresponding position in the sleeve sliding sleeve, an expansion executing mechanism in the navigation shuttle can be accurately and rapidly triggered to act, and the adopted passive RFID tag is small in size, light in weight and easy and convenient to install.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and gas well fracturing completion, and particularly relates to a fracturing sliding sleeve assembly structure with an RFID tag signal. Background Art

[0002] Horizontal well multi-stage sliding sleeve fracturing completion technology is commonly used in unconventional oil and gas reservoirs such as shale oil and gas, tight sandstone oil and gas, and coalbed methane. Wireless radio frequency identification (RFID) is an automatic identification technology that works on the principle of non-contact data communication between the reader and the tag to achieve the purpose of identifying the target. It has a simple structure and high recognition rate, and is widely used in various industries.

[0003] The fracturing sleeve is a core component of horizontal well staged fracturing tools and is crucial for the number of fracturing stages achieved. The currently commonly used ball-dropping sleeve process has a limited number of fracturing stages and cannot fully transform the formation. Existing technologies such as pumped bridge plugs and oil-towed fracturing can meet the required stage number, but they suffer from limitations such as discontinuous fracturing, long operation times, and high costs. A more convenient and cost-effective horizontal well staged fracturing tool is urgently needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a fracturing sleeve assembly structure with an RFID tag signal, which has a compact structure, flexible and convenient layout, and low use cost, and can quickly and accurately open the sandblasting holes of the casing sleeve of the target fracturing section of the oil and gas well pipeline.

[0005] The technical solutions adopted by the present invention to solve the above technical problems are:

[0006] A fracturing sleeve assembly structure with an RFID tag signal mainly comprises: a full-bore casing sleeve 1 and a navigation shuttle 2, wherein the front and rear ends of the full-bore casing sleeve 1 are both connected to the oil and gas well casing 3, and a plurality of sandblasting holes 5 are uniformly opened along the circumference at the middle portion of the outer wall of the full-bore casing sleeve 1 corresponding to the position of the target fracturing section of the pipeline, a marker cylinder 17 is fixedly installed on the inner wall of the front end of the full-bore casing sleeve 1, and a passive RFID tag 6 is affixed to the inner wall of the marker cylinder 17, and a slidable sleeve piston 4 is pre-installed on the inner wall of the full-bore casing sleeve 1 corresponding to the position of the sandblasting hole 5, and the navigation shuttle 2 is arranged inside the full-bore casing sleeve 1;

[0007] The navigation shuttle 2 includes a navigation shuttle shell 11, an expandable connecting section 12 is provided in the middle of the navigation shuttle shell 11, an expansion actuator 14 is provided inside the expandable connecting section 12, and a power module 15 and an RFID reader 13 matching the passive RFID tag 6 are also provided inside the navigation shuttle shell 11; the expansion actuator 14 and the power module 15 are both electrically connected to the RFID reader 13.

[0008] Furthermore, the full-bore sleeve 1 is provided with a sleeve front connecting section 7 and a sleeve rear connecting section 10 at both ends, and a piston sliding cavity 8 is provided in the middle of the full-bore sleeve 1. The sandblasting holes 5 are evenly opened on the outer wall of the piston sliding cavity 8 along the circumferential direction, and the sleeve piston 4 is pre-installed in the piston sliding cavity 8 at a position corresponding to the sandblasting holes 5.

[0009] Furthermore, the sleeve front connecting section 7 and the sleeve rear connecting section 10 are respectively connected to the oil and gas well casing 3 at the front and rear ends of the full-bore casing sleeve 1 .

[0010] Furthermore, the inner diameters of the sleeve front connecting section 7 and the sleeve rear connecting section 10 are consistent with the inner diameter of the sleeve piston 4 , and the outer diameter of the sleeve piston 4 is consistent with the inner diameter of the piston sliding cavity 8 .

[0011] Furthermore, a limiting slot 9 is provided at the junction of the piston sliding cavity 8 and the sleeve rear connecting section 10 , and a limiting block 16 adapted to the limiting slot 9 is provided at one end of the sleeve piston 4 close to the sleeve rear connecting section 10 .

[0012] Furthermore, the marking tube 17 is fixedly installed in the piston sliding cavity 8 at one end close to the front connecting section 7 of the sliding sleeve.

[0013] Furthermore, the passive RFID tag 6 is attached to the middle of the inner wall of the marker tube 17 , and the number can be multiple.

[0014] Furthermore, the outer diameter of the navigation shuttle housing 11 is smaller than the inner diameter of the sliding sleeve piston 4 .

[0015] Furthermore, the outer diameter of the expandable connecting section 12 when not expanded is consistent with the outer diameter of the navigation shuttle housing 11 .

[0016] Compared with the prior art, the present invention has the following main advantages:

[0017] 1. The utility model has a compact structure and is easy to install. Through the front connecting section and the rear connecting section of the sliding sleeve, it can be flexibly arranged at any position of the oil and gas well casing. With the reasonable arrangement of the sliding piston and the expandable navigation shuttle of corresponding size, under the pumping pressure of the ground pump truck at the casing inlet end, the expanded navigation shuttle drives the sliding sleeve piston to move along the piston sliding cavity in the casing sliding sleeve, which can quickly and efficiently open the casing sliding sleeve sandblasting hole of the target fracturing section of the oil and gas well pipeline, facilitating the subsequent oil and gas well pipeline fracturing construction;

[0018] 2. The utility model can accurately and quickly trigger the expansion actuator in the navigation shuttle by installing an RFID reader in the navigation shuttle and attaching a matching passive RFID tag to the corresponding position in the sleeve. The passive RFID tag is small in size, light in weight, and easy to install.

[0019] 3. The utility model has low use cost, long service life, flexible application, and can adapt to different oil and gas well environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall schematic diagram of the fracturing sliding sleeve assembly structure in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the embodiment of the utility model after the sandblasting hole of the full-bore casing sliding sleeve is opened.

[0022] In the figure: 1-full-bore casing sleeve; 2-navigation shuttle; 3-oil and gas well casing; 4-sleeve piston; 5-sandblasting hole; 6-passive RFID tag; 7-sleeve front connecting section; 8-piston sliding cavity; 9-limiting platform; 10-sleeve rear connecting section; 11-navigation shuttle housing; 12-expandable connecting section; 13-RFID reader; 14-expansion actuator; 15-power module; 16-limiting block; 17-marking tube. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0026] In the description of this application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as a limitation on this application.

[0027] The features and performance of the present application are further described in detail below with reference to the embodiments.

[0028] This embodiment provides a fracturing sleeve assembly structure with an RFID tag signal, such as Figures 1-2 As shown, it is installed in the middle of the oil and gas well casing 3, and the oil and gas well casing 3 is arranged inside the horizontal section pipeline of the oil and gas well. The structure mainly includes: a full-bore casing sleeve 1 and a navigation shuttle 2. The front and rear ends of the full-bore casing sleeve 1 are connected to the oil and gas well casing 3, and a plurality of sandblasting holes 5 are evenly opened along the circumference at the middle part of the outer wall of the full-bore casing sleeve 1 corresponding to the position of the target fracturing section of the pipeline. A marker cylinder 17 is fixedly installed on the inner wall of the front end of the full-bore casing sleeve 1, and a passive RFID tag 6 is attached to the inner wall of the marker cylinder 17. A slidable sleeve piston 4 is pre-installed on the inner wall of the full-bore casing sleeve 1 corresponding to the position of the sandblasting hole 5, and a navigation shuttle 2 is arranged in the full-bore casing sleeve 1;

[0029] The navigation shuttle 2 includes a navigation shuttle shell 11, an expandable connecting section 12 is provided in the middle of the navigation shuttle shell 11, an expansion actuator 14 is provided inside the expandable connecting section 12, and a power module 15 and an RFID reader 13 matching the passive RFID tag 6 are also provided inside the navigation shuttle shell 11; the expansion actuator 14 and the power module 15 are both electrically connected to the RFID reader 13.

[0030] Furthermore, the full-bore sleeve 1 is provided with a sleeve front connecting section 7 and a sleeve rear connecting section 10 at both ends, and a piston sliding cavity 8 is provided in the middle of the full-bore sleeve 1. The sandblasting holes 5 are evenly opened on the outer wall of the piston sliding cavity 8 along the circumferential direction, and the sleeve piston 4 is pre-installed in the piston sliding cavity 8 at a position corresponding to the sandblasting holes 5.

[0031] Furthermore, the sleeve front connecting section 7 and the sleeve rear connecting section 10 are respectively connected to the oil and gas well casing 3 at the front and rear ends of the full-bore casing sleeve 1 .

[0032] Furthermore, the inner diameters of the sleeve front connecting section 7 and the sleeve rear connecting section 10 are consistent with the inner diameter of the sleeve piston 4 , and the outer diameter of the sleeve piston 4 is consistent with the inner diameter of the piston sliding cavity 8 .

[0033] Furthermore, a limiting slot 9 is provided at the junction of the piston sliding cavity 8 and the sleeve rear connecting section 10 , and a limiting block 16 adapted to the limiting slot 9 is provided at one end of the sleeve piston 4 close to the sleeve rear connecting section 10 .

[0034] Furthermore, the marking tube 17 is fixedly installed in the piston sliding cavity 8 at one end close to the front connecting section 7 of the sliding sleeve.

[0035] Furthermore, the passive RFID tag 6 is attached to the inner wall of the marker tube 17 , and the number may be multiple.

[0036] Furthermore, the outer diameter of the expandable connecting section 12 when not expanded is consistent with the outer diameter of the navigation shuttle housing 11 .

[0037] The specific working principle is:

[0038] As the navigation shuttle passes through the sleeve, the RFID reader continuously emits radio frequency signals. The passive RFID tag set in the sleeve converts the received electromagnetic wave energy into electrical energy, activates the chip in the RFID tag, and sends the identification code data stored in the RFID chip to the RFID reader.

[0039] After receiving the identification code data, the RFID reader sends a preset instruction to the expansion actuator in the navigation shuttle, so that the expansion actuator operates to increase the outer diameter of the expandable connecting section of the navigation shuttle so as to be stuck on the inner wall of the sliding sleeve piston;

[0040] The pumping pressure of the ground pump truck at the inlet end of the oil and gas well casing is used to push the navigation shuttle to drive the sliding sleeve piston to move along the piston sliding cavity in the casing sliding sleeve, thereby exposing the sandblasting holes opened on the outer wall of the sliding sleeve, thereby facilitating the fracturing construction of this section of the oil and gas well pipeline.

[0041] Furthermore, all parts of this application that are not described in detail are the same as the existing technology or are implemented using the existing technology.

[0042] In summary:

[0043] 1. The utility model has a compact structure and is easy to install. Through the front connecting section and the rear connecting section of the sliding sleeve, it can be flexibly arranged at any position of the oil and gas well casing. With the reasonable arrangement of the sliding piston and the expandable navigation shuttle of corresponding size, under the pumping pressure of the ground pump truck at the casing inlet end, the expanded navigation shuttle drives the sliding sleeve piston to move along the piston sliding cavity in the casing sliding sleeve, which can quickly and efficiently open the casing sliding sleeve sandblasting hole of the target fracturing section of the oil and gas well pipeline, facilitating the subsequent oil and gas well pipeline fracturing construction;

[0044] 2. The utility model can accurately and quickly trigger the expansion actuator in the navigation shuttle by installing an RFID reader in the navigation shuttle and attaching a matching passive RFID tag to the corresponding position in the sleeve. The passive RFID tag is small in size, light in weight, and easy to install.

[0045] 3. The utility model has low use cost, long service life, flexible application, and can adapt to different oil and gas well environments.

[0046] The above embodiments are intended only to illustrate the design concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. The scope of protection of the present invention is not limited to the above embodiments. Therefore, any equivalent changes or modifications based on the principles and design concepts disclosed in the present invention are within the scope of protection of the present invention.

Claims

1. A fracturing sleeve assembly structure with an RFID tag signal, characterized by: The invention comprises a full-bore casing sleeve (1) and a navigation shuttle (2), wherein the front end and the rear end of the full-bore casing sleeve (1) are both connected to the oil and gas well casing (3), and a plurality of sandblasting holes (5) are uniformly opened along the circumference at the middle portion of the outer wall of the full-bore casing sleeve (1) corresponding to the position of the target fracturing section of the pipeline, a marker cylinder (17) is fixedly installed on the inner wall of the front end of the full-bore casing sleeve (1), a passive RFID tag (6) is attached to the inner wall of the marker cylinder (17), and a slidable sleeve piston (4) is pre-installed on the inner wall of the full-bore casing sleeve (1) corresponding to the position of the sandblasting hole (5), and a navigation shuttle (2) is arranged in the full-bore casing sleeve (1); The navigation shuttle (2) comprises a navigation shuttle housing (11), an expandable connecting section (12) is provided in the middle of the navigation shuttle housing (11), an expansion actuator (14) is provided inside the expandable connecting section (12), and a power module (15) and an RFID reader (13) matching the passive RFID tag (6) are also provided inside the navigation shuttle housing (11); the expansion actuator (14) and the power module (15) are both electrically connected to the RFID reader (13).

2. The fracturing sleeve assembly structure with an RFID tag signal according to claim 1, characterized in that: The full-bore sleeve (1) is provided with a sleeve front connecting section (7) and a sleeve rear connecting section (10) at both ends, and a piston sliding cavity (8) is provided in the middle of the full-bore sleeve (1). The sandblasting holes (5) are evenly arranged on the outer wall of the piston sliding cavity (8) along the circumferential direction, and the sleeve piston (4) is pre-installed in the piston sliding cavity (8) at a position corresponding to the sandblasting hole (5).

3. The fracturing sleeve assembly structure with an RFID tag signal according to claim 2, characterized in that: The sleeve front connecting section (7) and the sleeve rear connecting section (10) are respectively connected to the oil and gas well casing (3) at the front and rear ends of the full-diameter casing sleeve (1).

4. The fracturing sleeve assembly structure with an RFID tag signal according to claim 3, characterized in that: The inner diameters of the sleeve front connecting section (7) and the sleeve rear connecting section (10) are consistent with the inner diameter of the sleeve piston (4), and the outer diameter of the sleeve piston (4) is consistent with the inner diameter of the piston sliding cavity (8).

5. The fracturing sleeve assembly structure with an RFID tag signal according to claim 2, characterized in that: A limit slot (9) is provided at the junction of the piston sliding cavity (8) and the rear connecting section (10) of the sliding sleeve, and a limit block (16) adapted to the limit slot (9) is provided at one end of the sliding sleeve piston (4) close to the rear connecting section (10).

6. The fracturing sleeve assembly structure with an RFID tag signal according to claim 2, characterized in that: The marking cylinder (17) is fixedly installed in the piston sliding cavity (8) at one end close to the front connecting section (7) of the sliding sleeve.

7. The fracturing sleeve assembly structure with RFID tag signal according to claim 6, characterized in that: The passive RFID tag (6) is attached to the middle portion of the inner wall of the marker tube (17).

8. The fracturing sleeve assembly structure with an RFID tag signal according to claim 4, characterized in that: The outer diameter of the navigation shuttle housing (11) is smaller than the inner diameter of the sliding sleeve piston (4).

9. The fracturing sleeve assembly structure with RFID tag signal according to claim 8, characterized in that: The outer diameter of the expandable connecting section (12) when not expanded is consistent with the outer diameter of the navigation shuttle housing (11).

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