Bridge plug with detection function

Abstract

The utility model discloses a bridge plug with a detection function. The bridge plug comprises a core shaft, a control assembly shell arranged in the core shaft, a control unit installed in the control assembly shell, a battery installed on the control unit, and a pull rod connected in the other end of the core shaft. The releasing head is made of a corrosion-resistant soluble metal material, serves as a guidance component in the device and is rotationally arranged at one end of the core shaft, a mineralization degree probe, a temperature sensor, a visual probe and a pressure sensor are further installed in the core shaft, the mineralization degree probe, the temperature sensor, the visual probe and the pressure sensor are arranged in the core shaft, and the mineralization degree probe, the temperature sensor, the visual probe and the pressure sensor are arranged in the core shaft. The method is used for detecting the mineralization degree; the temperature sensor is used for detecting the underground temperature; the visual probe is used for observing underground conditions; the pressure sensor is used for detecting underground pressure; and integration of functional modules is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge plugs, and in particular relates to a bridge plug with a detection function. Background Art

[0002] A bridge plug is a packer that stays at a certain depth in the well and is detached from the tubing string. It is also called a drop-out packer and is mainly used for sealing oil and gas wells.

[0003] Existing bridge plug designs tend to pursue structural simplicity and ease of operation to meet basic downhole plugging needs. However, this pursuit of simplicity has also led to their general lack of built-in detection functions. Specifically, the structure of most bridge plugs is relatively simple, usually containing only the necessary components such as slips, rubber sleeves and locking mechanisms to ensure that they can be correctly set underground and effectively seal the designated formation; due to structural limitations, these bridge plugs usually do not have real-time status monitoring or performance evaluation capabilities. For example, they cannot directly provide real-time feedback on the plugging effect, nor can they monitor key parameters such as downhole pressure and temperature changes. This means that after the bridge plug is deployed, operators can often only rely on indirect means such as observing wellhead pressure changes and conducting pressure tests to evaluate the working status of the bridge plug. Utility Model Content

[0004] The purpose of the present utility model is to provide a bridge plug with a detection function, so as to solve the problem in the above background technology that the existing bridge plug has no detection function.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bridge plug with a detection function, comprising a core shaft, a control component shell placed inside, a control unit installed inside the control component shell, a battery installed on the control unit, and a pull rod connected to the other end of the core shaft; a hand-loosening head, made of corrosion-resistant soluble metal material, serves as a guiding component in the device, and is screwed on one end of the core shaft, and a mineralization probe, a temperature sensor, a visualization probe and a pressure sensor are also installed inside the core shaft, the mineralization probe, temperature sensor, visualization probe and pressure sensor pass through the core shaft through a transmission harness and are connected to the control unit. In actual use, the visualization probe can also realize signal transmission by the wireless receiving module on the control unit; a vertebral body, screwed on the other end of the core shaft, and the end of the vertebral body is in the position of the card The internal position of the tile, the vertebral body is made of corrosion-resistant soluble metal material, and the inner cavity is processed with oil serration thread. The pull rod passes through the center of the vertebral body and penetrates to the outside of the vertebral body. After the bridge plug reaches the working location, the pull rod is rotated to drive the core shaft, the release head, and the slips to rotate, and the vertebral body is driven forward. At this time, the slips expand, and the porcelain piece fits the inner wall of the oil pipeline to form a seal. After the sealing is completed, the mineralization probe, temperature sensor, visualization probe and pressure sensor provide signals to the control unit. After receiving feedback, the pull rod begins to retreat and pulls the core shaft back and out. After reaching a certain degree, the thread between the core shaft and the release head is damaged, and the release head, slips, metal slip rings, spiral sealing slip rings and vertebral body are left at a distance. All detection data can be transmitted in real time along with the cable. At the same time, the data stored in the control unit can also be archived and analyzed after leaving the well.

[0006] The slip is integrally sleeved on the outside of the core shaft, and a tapered groove is formed inside the slip to fit the end of the vertebral body;

[0007] The sealing assembly is arranged between the slips and the vertebral body to ensure that no leakage occurs in later use.

[0008] Preferably, the slips are made of corrosion-resistant soluble metal material, and ceramic pieces are embedded on the surface of the slips. The ceramic pieces are distributed in a ring shape, and the surface of the slips is provided with expansion grooves, and the end face facing the direction of the throwing head is formed with a boss, which can cooperate with the throwing head to achieve the purpose of anti-rotation.

[0009] Preferably, the sealing assembly includes a metal slip ring and a spiral sealing slip ring threadedly connected to the vertebral body, wherein the metal slip ring abuts against the end face of the slip, and the spiral sealing slip ring abuts against the surface of the vertebral body, thereby achieving a sealing effect.

[0010] Preferably, a hand-loosening detection probe is further provided at the connection between the pull rod and the core shaft, and the hand-loosening detection probe is connected to the control unit via a transmission harness.

[0011] Preferably, the tiles on the surface of the slips are pointed tiles.

[0012] Preferably, the tiles on the surface of the slips are arc-shaped tiles.

[0013] Preferably, a plastic baffle is provided at the open end of the control component housing, a hole is opened on the plastic baffle, a plastic sheet is glued in each hole, and double-sided tape is also glued at the end edge of the plastic baffle, and the double-sided tape is glued to the open end of the control component housing.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] Through the design of the utility model, the ordinary bridge plug is provided with a detection function, which can monitor the downhole pressure and temperature changes in real time, and improves the shortcomings of the existing structure in use.

[0016] At the same time, the mineralization probe is used to detect mineralization; the temperature sensor is used to detect downhole temperature; the visualization probe is used to observe downhole conditions; and the pressure sensor is used to detect downhole pressure to realize the integration of functional modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection between the control component housing and the plastic baffle of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the curved ceramic tile in Example 2.

[0021] In the picture:

[0022] 1. Lost hand detection head; 2. Slip; 3. Sharp-angled ceramic tile; 4. Metal slip ring; 5. Spiral sealing slip ring; 6. Cone; 7. Pull rod; 8. Control unit; 9. Control component housing; 10. Mineralization probe; 11. Temperature sensor; 12. Visualization probe; 13. Mandrel; 14. Lost hand detection probe; 15. Curved ceramic tile; 16. Plastic baffle; 17. Plastic sheet; 18. Double-sided tape. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] See also Figures 1 to 3 The utility model provides a technical solution: a bridge plug device with a detection function, comprising

[0026] The core shaft 13 has a control assembly housing 9 placed inside, a control unit 8 installed inside the control assembly housing 9, a battery installed on the control unit 8, and a pull rod 7 connected to the other end of the core shaft 13;

[0027] The hand-throwing head 1 is made of corrosion-resistant soluble metal material and serves as a guiding component in the device. It is screwed onto one end of the core shaft 13. A mineralization probe 10, a temperature sensor 11, a visualization probe 12, and a pressure sensor are also installed inside the core shaft 13. The mineralization probe 10, the temperature sensor 11, the visualization probe 12, and the pressure sensor pass through the core shaft 13 through a transmission harness and are connected to the control unit 8. In actual use, the visualization probe 12 can also control the wireless receiving module on the control unit 8 to achieve signal transmission;

[0028] The vertebral body 6 is screwed on the other end of the core shaft 13. The end of the vertebral body 6 is located inside the slip 2. The vertebral body 6 is made of corrosion-resistant soluble metal material, and the inner cavity is processed with oil serration threads. The pull rod 7 passes through the center of the vertebral body 6 and penetrates the outside of the vertebral body 6. After the bridge plug reaches the working location, the pull rod 7 is rotated to drive the core shaft 13, the throwing head 1, and the slip 2 to rotate, and the vertebral body 6 to move forward. At this time, the slip 2 expands, and the porcelain piece fits the inner wall of the oil pipeline to form a seal. After the sealing is completed, the salinity probe 10, the temperature sensor 11, the visualization probe 12 and the pressure sensor provide signals to the control unit 8. After receiving feedback, the pull rod 7 starts to retreat and pulls the core shaft 13 back and out. After reaching a certain extent, the thread between the core shaft 13 and the throwing head 1 is broken, and the throwing head 1, slip 2, metal slip ring 4, spiral sealing slip ring 5 and the vertebral body 6 are left at a distance. All detection data can be transmitted in real time along with the cable. At the same time, the data stored in the control unit 8 can also be archived and analyzed after leaving the well.

[0029] The slip 2 is integrally sleeved on the outside of the core shaft 13, and a conical groove is formed inside the slip 2 to fit the end of the vertebral body 6;

[0030] The sealing assembly is arranged between the slip 2 and the vertebral body 6 to ensure that no leakage occurs during subsequent use.

[0031] In this embodiment, preferably, the cava 2 is made of corrosion-resistant soluble metal material, and ceramic pieces are embedded on the surface of the cava 2. The ceramic pieces are distributed in a ring shape, and an expansion groove is opened on the surface of the cava 2, and a boss is formed on the end face facing the throwing head 1, which can cooperate with the throwing head 1 to achieve the purpose of anti-rotation.

[0032] In this embodiment, preferably, the sealing assembly includes a metal slip ring 4 and a spiral sealing slip ring 5 threadedly connected to the vertebral body 6, wherein the metal slip ring 4 is against the end face of the slip ring 2, and the spiral sealing slip ring 5 is against the surface of the vertebral body 6, thereby achieving a sealing effect.

[0033] In this embodiment, preferably, a hand-loosening detection probe 14 is further provided at the connection between the pull rod 7 and the core shaft 13 , and the hand-loosening detection probe 14 is connected to the control unit 8 via a transmission harness.

[0034] In this embodiment, preferably, the tiles on the surface of the slips 2 are pointed tiles 3 .

[0035] In this embodiment, a plastic baffle 16 is provided at the open end of the control component housing 9. A hole is opened on the plastic baffle 16, and a plastic sheet 17 is glued into each hole. Double-sided tape 18 is also glued to the edge of the end face of the plastic baffle 16, and the double-sided tape 18 is glued to the open end of the control component housing 9.

[0036] Example 2

[0037] The difference from this implementation 1 is: Please refer to Figure 4 In this embodiment, preferably, the tiles on the surface of the slip 2 are arc-shaped tiles 15.

[0038] Mineralization probe, used for mineralization detection;

[0039] Temperature sensor, used to detect downhole temperature;

[0040] Visualization probe, used to observe downhole conditions;

[0041] Pressure sensor, used to detect downhole pressure; realize the integration of functional modules.

[0042] Although embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge plug with a detection function, characterized in that: include A core shaft (13) is provided with a control component housing (9) therein, a control unit (8) is installed inside the control component housing (9), a battery is installed on the control unit (8), and a pull rod (7) is connected to the other end of the core shaft (13); The hand-loosening head (1) is screwed on one end of the core shaft (13), and a mineralization probe (10), a temperature sensor (11), a visualization probe (12) and a pressure sensor are also installed inside the core shaft (13). The mineralization probe (10), the temperature sensor (11), the visualization probe (12) and the pressure sensor pass through the core shaft (13) through a transmission harness and are connected to the control unit (8); The vertebral body (6) is screwed onto the other end of the core shaft (13); The slip (2) is integrally sleeved on the outside of the core shaft (13), and a conical groove is formed inside the slip (2) to fit the end of the vertebra (6); the end of the vertebra (6) is located inside the slip (2), and the inner cavity of the vertebra (6) is processed with an oil saw tooth thread, and the pull rod (7) passes through the center of the vertebra (6) and penetrates to the outside of the vertebra (6); A sealing assembly is arranged between the slip (2) and the vertebral body (6).

2. The bridge plug with detection function according to claim 1, characterized in that: The surface of the slip (2) is embedded with ceramic pieces, which are distributed in a ring shape. The surface of the slip (2) is provided with expansion grooves, and the end surface facing the throwing head (1) is formed with a boss.

3. The bridge plug with detection function according to claim 1, characterized in that: The sealing assembly comprises a metal slip ring (4) and a spiral sealing slip ring (5) which are threadedly connected to the cone (6), wherein the metal slip ring (4) abuts against the end face of the slip ring (2), and the spiral sealing slip ring (5) abuts against the surface of the cone (6).

4. The bridge plug with detection function according to claim 1, characterized in that: A hand-loosening detection probe (14) is also provided at the connection between the pull rod (7) and the core shaft (13), and the hand-loosening detection probe (14) is connected to the control unit (8) via a transmission harness.

5. The bridge plug with detection function according to claim 2, characterized in that: The tiles on the surface of the slips (2) are pointed tiles (3).

6. The bridge plug with detection function according to claim 2, characterized in that: The tiles on the surface of the slips (2) are arc-shaped tiles (15).

7. The bridge plug with detection function according to claim 1, characterized in that: A plastic baffle (16) is provided at the open end of the control component housing (9), a hole is opened on the plastic baffle (16), a plastic sheet (17) is bonded in each hole, and a double-sided tape (18) is also bonded to the edge of the end face of the plastic baffle (16), and the double-sided tape (18) is bonded to the open end of the control component housing (9).

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