Double-grip full-metal bridge plug device with detection function

Abstract

The utility model relates to oil and gas well packer technology field, and disclose a double-grip full-metal bridge plug device with detection function, including the release head, the inner surface screw thread sleeve joint of release head has the central tube, the right side fixed mounting of central tube inner surface has visual probe, the left side fixed mounting of central tube inner surface has video shell, the inner surface fixed mounting of video shell has control assembly shell, the utility model discloses through the optimization structure design, set up visual probe, mineralization detection probe and temperature sensor in the central tube, compared to the existing ordinary soluble bridge plug, this structure design can realize the downhole visualization monitoring, mineralization accurate test and temperature real -time detection function simultaneously, this gives soluble bridge plug new key parameter detection ability, fills the blank of existing soluble bridge plug in the downhole mineralization, temperature change real -time monitoring, effectively perfects its function short board in the use process.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas well sealing technology, and more specifically, to a double slip all-metal bridge plug device with detection function. Background Technology

[0002] Bridge plugs are specialized tools used to isolate downhole sections through mechanical setting or hydraulic drive. They have excellent temperature resistance and pressure resistance, enabling them to adapt to extreme well conditions. In addition, bridge plugs made of drillable alloy materials or soluble magnesium alloys can meet different operational needs. They are widely used in stratified mining, water shut-off operations, and abandoned well plugging, and are key downhole isolation tools for oil and gas well production enhancement and safe sealing.

[0003] Existing bridge plug designs are mostly guided by the principles of structural simplicity and ease of operation, only meeting the basic requirements of downhole plugging. However, this design approach also results in bridge plugs generally lacking built-in detection functions. Typically, the bridge plug structure only includes necessary components such as slips, rubber sleeves, and locking mechanisms, which can only ensure accurate setting and effective formation plugging downhole. Due to structural limitations, real-time monitoring and performance evaluation of the working status cannot be achieved. For example, existing bridge plugs cannot directly provide feedback on the plugging effect, nor can they collect key parameters such as downhole pressure and temperature in real time. As a result, after the bridge plug is deployed, operators can only judge the actual working status of the bridge plug indirectly by observing changes in wellhead pressure and conducting pressure tests. Therefore, improvements are needed. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a dual-slip all-metal bridge plug device with detection function, which has the advantage of being able to detect key data.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-slip all-metal bridge plug device with detection function, comprising a dropper head, a central tube threaded onto the inner surface of the dropper head, a visualization probe fixedly installed on the right side of the inner surface of the central tube, a video housing fixedly installed on the left side of the inner surface of the central tube, a control assembly housing fixedly installed on the inner surface of the video housing, a lithium battery fixedly installed on the inner surface of the left side of the control assembly housing, a control unit fixedly installed on the inner surface of the right side of the control assembly housing, a mineralizer mounting base fixedly connected to the right surface of the video housing, a temperature sensor fixedly installed on the inner surface of the mineralizer mounting base, and a mineralization detection probe fixedly installed on the inner surface of the right side of the mineralizer mounting base.

[0006] As a preferred embodiment of this utility model, an upper latch is movably sleeved on the rear side of the outer surface of the central tube, and a lower latch is movably sleeved on the front side of the outer surface of the central tube.

[0007] As a preferred embodiment of this utility model, a pusher plate is movably sleeved on the outer surface of the central tube, and the front surface of the pusher plate is movably connected to the upper latch.

[0008] As a preferred embodiment of this utility model, ceramic clips are fixedly connected to the inner surfaces of both the lower clip and the upper clip, and the ceramic clips are serrated in shape.

[0009] As a preferred embodiment of this utility model, an upper cone is movably mounted on the outer surface of the central tube, and the upper cone and the upper slip are movably connected.

[0010] As a preferred embodiment of this utility model, a lower cone is movably mounted on the outer surface of the central tube, and the lower cone and the lower slip are movably connected.

[0011] As a preferred embodiment of this utility model, a sealing sleeve is movably installed on the outer surface of the central tube, and the outer surface of the sealing sleeve is movably connected to the upper cone and the lower cone respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention optimizes the structural design by incorporating a visualization probe, a mineralization detection probe, and a temperature sensor within the central tube. Compared to existing ordinary soluble bridge plugs, this design enables simultaneous downhole visualization monitoring, precise mineralization testing, and real-time temperature detection. This adds key parameter detection capabilities to the soluble bridge plug, filling the gap in real-time monitoring of downhole mineralization and temperature changes, and effectively addressing its functional shortcomings during use. Furthermore, it eliminates the rubber ring found in ordinary soluble bridge plugs, replacing it with a metal sealing sleeve made of soluble magnesium-aluminum alloy. The metal sealing sleeve has higher compressive strength than the rubber ring and is less prone to aging, avoiding the problem of the rubber ring in ordinary soluble bridge plugs aging easily and causing the entire soluble bridge plug to become unusable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a cross-sectional structural diagram of the housing of the control assembly of this utility model; Figure 4 This is a schematic diagram of the structure of the strip-shaped ceramic tile of this utility model.

[0014] In the diagram: 1. Dropper; 2. Lower slip; 3. Lower cone; 4. Sealing sleeve; 5. Upper cone; 6. Upper slip; 7. Push plate; 8. Central tube; 9. Control assembly housing; 10. Lithium battery; 11. Control unit; 12. Video housing; 13. Mineralizer mounting base; 14. Temperature sensor; 15. Mineralization detection probe; 16. Visualization probe; 17. Ceramic slip. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figures 1 to 4 As shown, this utility model provides a dual-slip all-metal bridge plug device with detection function, including a drop head 1, a central tube 8 threadedly connected to the inner surface of the drop head 1, a visualization probe 16 fixedly installed on the right side of the inner surface of the central tube 8, a video housing 12 fixedly installed on the left side of the inner surface of the central tube 8, a control assembly housing 9 fixedly installed on the inner surface of the video housing 12, a lithium battery 10 fixedly installed on the inner surface of the left side of the control assembly housing 9, a control unit 11 fixedly installed on the inner surface of the right side of the control assembly housing 9, a mineralizer mounting base 13 fixedly connected to the right surface of the video housing 12, a temperature sensor 14 fixedly installed on the inner surface of the mineralizer mounting base 13, and a mineralization detection probe 15 fixedly installed on the inner surface of the right side of the mineralizer mounting base 13.

[0017] The central tube 8 can be connected to the shearing rod via shearing pins. The control unit 11 is equipped with control circuitry and a wireless receiving module. The temperature sensor 14, mineralization detection probe 15, and visualization probe 16 pass through the central tube 8 and are connected to the control unit 11 via a transmission harness. In actual use, the visualization probe 16, mineralization detection probe 15, and temperature sensor 14 can also transmit signals via the wireless receiving module on the control unit 11.

[0018] Among them, the rear side of the outer surface of the central tube 8 is movably fitted with an upper slip 6, and the front side of the outer surface of the central tube 8 is movably fitted with a lower slip 2.

[0019] When the inner inclined surfaces of the upper slip 6 and the lower slip 2 are compressed, the upper slip 6 and the lower slip 2 can expand and deform outward.

[0020] Among them, the outer surface of the central tube 8 is movably sleeved with a push plate 7, and the front surface of the push plate 7 is movably connected to the upper slip 6.

[0021] When the central tube 8 is connected to the shearing rod, the pusher will press against the end face of the pusher plate 7. During the setting process, the shearing rod will pull the central tube 8, and the pusher will push the pusher plate 7, causing the pusher plate 7 and the central tube 8 to move in opposite directions.

[0022] Among them, ceramic slip pieces 17 are fixedly connected to the inner surfaces of both the lower slip 2 and the upper slip 6. The ceramic slip pieces 17 have a serrated shape.

[0023] The ceramic slip 17 has a stronger overall structural rigidity in terms of shape and texture, and is not easy to bend or deform under high pressure. It can maintain the shape when it is set for a long time, ensuring the locking force on the bushing. At the same time, the design of two sets of ceramic slips 17 can significantly improve the stability of the setting and sealing, the load-bearing capacity and the bushing compatibility, and effectively reduce the risk of failure under extreme working conditions.

[0024] The upper cone 5 is movably mounted on the outer surface of the central tube 8, and the upper cone 5 and the upper slip 6 are movably connected.

[0025] During the setting process, the upper cone 5 will move under the action of the setting force and squeeze into the inner inclined surface of the upper slip 6, thereby radially expanding the upper slip 6.

[0026] The lower cone 3 is movably mounted on the outer surface of the central tube 8, and the lower cone 3 and the lower slip 2 are movably connected.

[0027] During the setting process, the lower cone 3 will move under the action of the setting force and squeeze into the inner inclined surface of the lower slip 2, thereby radially expanding the lower slip 2.

[0028] Among them, a sealing sleeve 4 is movably installed on the outer surface of the central tube 8, and the outer surface of the sealing sleeve 4 is movably connected to the upper cone 5 and the lower cone 3 respectively.

[0029] The sealing sleeve 4 is made of soluble magnesium-aluminum alloy. This metal sealing sleeve 4 has higher pressure resistance than rubber rings and is not easy to age. It is suitable for high temperature and high pressure wells, sulfur-containing wells, long shut-in wells and permanent isolation scenarios. It has strong structural rigidity, outstanding resistance to formation stress disturbance, and low failure risk. At the same time, the soluble magnesium-aluminum alloy can completely dissolve into ionic state or extremely fine particles under the designed temperature, pressure and formation fluids such as saline and crude oil, leaving no solid residue. This solves the problem that traditional rubber sleeve dissolution leaves behind small debris or gel-like substances that can easily adhere to the inner wall of the casing, block formation pores or enter the tubing and affect the operation of subsequent production equipment. In addition, the lower cone 3, the upper cone 5 and the sealing sleeve 4 also play a sealing role.

[0030] Working principle and usage process of this utility model: First, the operator uses a pusher and shear rod to move the central tube 8 as a whole within the oil pipeline. Once the bridge plug has moved to the predetermined working position within the oil pipeline, the operator moves the pusher, which in turn moves the central tube 8, the release head 1, the lower slip 2, and the upper slip 6. At this time, the lower cone 3 and the upper cone 5 move forward. The lower slip 2 and the upper slip 6 will expand radially as the lower cone 3 and the upper cone 5 move, causing the ceramic slips to adhere to the inner wall of the oil pipeline, forming a seal.

[0031] After sealing is completed, the temperature sensor 14, mineralization detection probe 15, and visualization probe 16 transmit signals to the control unit 11. At the same time, the shear rod begins to move backward and pulls the central tube 8 backward and out. After reaching a certain extent, the thread between the central tube 8 and the slip 1 will be broken. The slip 1, lower slip 2 and upper slip 6, metal sealing sleeve 4, push plate 7, lower cone 3 and upper cone 5 will be left in place. All detection data can be transmitted in real time along with the cable. At the same time, the data stored on the control unit can also be archived and analyzed after the well is opened.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Standard parts used in this invention are all commercially available, and custom-shaped parts can be made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections and system control methods also adopt conventional connection methods in the prior art, which will not be detailed here.

[0033] Although embodiments of the present invention 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-slip all-metal bridge plug device with detection function, comprising a dropper (1), characterized in that: The inner surface of the drop head (1) is threaded with a central tube (8). A visualization probe (16) is fixedly installed on the right side of the inner surface of the central tube (8). A video housing (12) is fixedly installed on the left side of the inner surface of the central tube (8). A control assembly housing (9) is fixedly installed on the inner surface of the video housing (12). A lithium battery (10) is fixedly installed on the inner surface of the left side of the control assembly housing (9). A control unit (11) is fixedly installed on the inner surface of the right side of the control assembly housing (9). A mineralizer mounting base (13) is fixedly connected to the right surface of the video housing (12). A temperature sensor (14) is fixedly installed on the inner surface of the mineralizer mounting base (13). A mineralization detection probe (15) is fixedly installed on the inner surface of the right side of the mineralizer mounting base (13).

2. The dual-slip all-metal bridge plug device with detection function according to claim 1, characterized in that: The rear side of the outer surface of the central tube (8) is movably fitted with an upper slip (6), and the front side of the outer surface of the central tube (8) is movably fitted with a lower slip (2).

3. The dual-slip all-metal bridge plug device with detection function according to claim 1, characterized in that: The outer surface of the central tube (8) is movably fitted with a push plate (7), and the front surface of the push plate (7) is movably connected to the upper slip (6).

4. The dual-slip all-metal bridge plug device with detection function according to claim 2, characterized in that: The inner surfaces of the lower slip (2) and the upper slip (6) are both fixedly connected with ceramic slip pieces (17), and the ceramic slip pieces (17) are serrated in shape.

5. The dual-slip all-metal bridge plug device with detection function according to claim 1, characterized in that: The outer surface of the central tube (8) is movably mounted with an upper cone (5), and the upper cone (5) and the upper slip (6) are movably connected.

6. The dual-slip all-metal bridge plug device with detection function according to claim 1, characterized in that: The lower cone (3) is movably mounted on the outer surface of the central tube (8), and the lower cone (3) and the lower slip (2) are movably connected.

7. The dual-slip all-metal bridge plug device with detection function according to claim 1, characterized in that: A sealing sleeve (4) is movably installed on the outer surface of the central tube (8), and the outer surface of the sealing sleeve (4) is movably connected to the upper cone (5) and the lower cone (3) respectively.

Images