Polymer fracturing fluid preparation device

Abstract

The utility model relates to the technical field of fracturing fluid preparation, in particular to a polymer fracturing fluid preparation device. The polymer fracturing fluid preparation device comprises a frame body, a fixedly connected preparation tank is erected on the frame body, and a movably connected mixing assembly is inserted into the preparation tank; the mixing assembly comprises a sealing disc, the outer wall of the sealing disc abuts against the inner wall of the open end of the preparation tank, a mixing rod is rotationally connected to the sealing disc, a scraping disc is rotationally connected to the end of the mixing rod, and the outer wall of the scraping disc abuts against the inner wall of the preparation tank and is in sliding connection with the inner wall of the preparation tank. According to the polymer fracturing fluid preparation device provided by the utility model, after the preparation of the fracturing fluid is completed, the mixing assembly can be extracted outwards, so that the scraping disc can be driven to move towards the outside of the preparation tank, and in the process, the prepared fracturing fluid can be scraped through the propping of the scraping disc and the preparation tank; and therefore, the fracturing fluid can be discharged more smoothly.

Description

Technical Field

[0001] This utility model relates to the field of fracturing fluid preparation technology, and in particular to a polymer fracturing fluid preparation device. Background Technology

[0002] Fracturing technology is a reservoir stimulation technique that uses hydraulic pressure to create artificial fractures in oil and gas reservoirs, thereby increasing the fluid flow capacity of the reservoirs. Using a surface high-pressure pump unit, a large volume of high-viscosity fluid is injected into the formation through the wellbore. High pressure is created at the bottom of the well. When the pressure exceeds the formation's bearing capacity, fractures form near the bottom of the well. Continued injection of fluid carrying proppant causes the fractures to extend forward. The proppant supports the fractures, forming sand-filled fractures of a certain size and high conductivity, allowing oil and gas to flow into the well, thus increasing production and injection. Fracturing fluid is the working fluid used in fracturing operations; it is a fluid with a certain viscosity that plays a role in transferring energy, forming and extending fractures, and carrying proppant.

[0003] In existing fracturing fluid preparation devices, after the fracturing fluid is prepared, half of it is automatically discharged through a discharge pipe. However, because the fracturing fluid has a relatively high viscosity and relatively low fluidity, it is difficult to flow in the relatively small discharge pipe, thus increasing the discharge efficiency of the fracturing fluid.

[0004] Therefore, it is necessary to provide a new polymer fracturing fluid preparation device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a polymer fracturing fluid preparation device.

[0006] The polymer fracturing fluid preparation device provided by this utility model includes: a frame, on which a preparation tank is fixedly connected, and a mixing component is inserted inside the preparation tank;

[0007] The mixing assembly includes a sealing disc, the outer wall of which abuts against the inner wall of one end of the opening of the preparation tank. The sealing disc is provided with a rotatably connected mixing rod, and the end of the mixing rod is equipped with a rotatably connected scraper. The outer wall of the scraper abuts against and is slidably connected to the inner wall of the preparation tank.

[0008] A mixing frame is fixedly connected to the outer wall of the mixing rod, and a rotating motor that drives the mixing rod is fixedly installed on the sealing disc.

[0009] Preferably, a feeding groove is provided on the outer wall of the preparation tank, and a sealing component is provided on the outer side of the feeding groove of the preparation tank wall. The sealing component includes a sealing plate, the outer wall of the sealing plate abuts against the inner wall of the feeding groove, the bottom of the sealing plate has an arc surface structure, and the arc curvature of the bottom of the sealing plate is the same as the arc curvature of the inner wall of the preparation tank.

[0010] Preferably, the sealing assembly further includes a mounting plate, which has two mounting plates and is fixedly installed on both sides of the feeding trough on the outer wall of the preparation tank. Multiple support plates are fixedly installed on the mounting plate, and a threaded rod is inserted into the interior of the support plate on the side away from the feeding trough.

[0011] Preferably, the end of the lead screw is provided with a rotatably connected limiting frame, and the outer wall of the limiting frame abuts against and is slidably connected to the inner wall of the other support plates.

[0012] Preferably, both sides of the top of the sealing plate are fixedly connected with limiting plates, and the inner wall of the limiting plate abuts against and slides against the outer wall of the limiting frame.

[0013] Preferably, the frame is provided with a plurality of fixedly connected guide rods and a rotatably connected drive rod, and the outer wall of the guide rods is fixedly connected to the inner wall of the preparation tank and the sealing plate.

[0014] Preferably, a drive motor for driving the drive rod is fixedly installed on the frame, the outer wall of the drive rod is rotatably connected to the inner wall of the preparation tank, and the outer wall of the drive rod is threadedly connected to the inner wall of the sealing disc.

[0015] Compared with related technologies, the polymer fracturing fluid preparation device provided by this utility model has the following advantages:

[0016] 1. This utility model involves horizontally mounting a preparation tank and installing a scraper plate in the mixing assembly that abuts against the inner wall of the preparation tank. After the fracturing fluid is prepared, the mixing assembly can be pulled outward, which in turn moves the scraper plate towards the outside of the preparation tank. During this process, the prepared fracturing fluid can be scraped off by the scraper plate abutting against the preparation tank, thus making the fracturing fluid feeding smoother.

[0017] 2. The sealing plate in this utility model, after being installed inside the feeding trough, has the same arc-shaped structure at the bottom as the arc-shaped structure of the inner wall of the mixing tank, thus forming a complete structure on the inner wall of the mixing tank. Therefore, during mixing, it can reduce the phenomenon of dead corners remaining in the mixing tank, thereby achieving more comprehensive stirring and mixing of the raw materials.

[0018] 3. By inserting and installing the mixing component, the mixing component can be separated from the mixing tank after the fracturing fluid is discharged. This not only makes it easier for workers to clean the residual fracturing fluid on the mixing component, but also makes it easier for workers to inspect and maintain the mixing component later. Attached Figure Description

[0019] Figure 1 A schematic diagram of a preferred embodiment of the polymer fracturing fluid preparation device provided by this utility model;

[0020] Figure 2 for Figure 1 The diagram shows the structure of the hybrid component.

[0021] Figure 3 for Figure 1 The diagram shows the structure of the sealing assembly.

[0022] Figure 4 for Figure 1 The diagram shows a partial cross-sectional view of the connection between the frame and the preparation tank.

[0023] The following are the labeling elements in the diagram: 1. Frame; 11. Guide rod; 12. Drive rod; 13. Drive motor; 2. Preparation tank; 21. Feeding trough; 3. Mixing assembly; 31. Sealing disc; 311. Rotating motor; 32. Mixing rod; 321. Scraper; 322. Mixing frame; 4. Sealing assembly; 41. Mounting plate; 411. Support plate; 412. Limiting frame; 413. Lead screw; 42. Sealing plate; 421. Limiting plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1 to 4 The present invention provides a polymer fracturing fluid preparation device, which includes: a frame 1, a preparation tank 2 fixedly connected to the frame 1, and a mixing component 3 movably connected to the preparation tank 2.

[0027] In the embodiments of this utility model, please refer to Figures 1 to 4The mixing component 3 includes a sealing disc 31, the outer wall of which abuts against the inner wall of one end of the opening of the preparation tank 2. A mixing rod 32 is rotatably connected to the sealing disc 31. A scraper 321 is rotatably connected to the end of the mixing rod 32. The outer wall of the scraper 321 abuts against and is slidably connected to the inner wall of the preparation tank 2. A mixing frame 322 is fixedly connected to the outer wall of the mixing rod 32. A rotary motor 311 for driving the mixing rod 32 is fixedly installed on the sealing disc 31.

[0028] It should be noted that by horizontally setting up the preparation tank 2 and sliding the scraper 321, after the fracturing fluid is prepared, the mixing component 3 can be drawn outwards, allowing the scraper 321 to move towards the outside of the preparation tank 2. During this process, the scraper 321 and the preparation tank 2 abut against each other, thus scraping and discharging the prepared fracturing fluid. After the fracturing fluid is discharged, the mixing component 3, which has moved to the outside of the preparation tank 2, can also be separated from the preparation tank 2. This not only facilitates the cleaning of residual fracturing fluid on the mixing component 3 by the staff, but also facilitates the later inspection and maintenance of the mixing component 3, thereby improving the user experience of the device.

[0029] In the embodiments of this utility model, please refer to Figures 1 to 4 A feeding trough 21 is provided on the outer wall of the preparation tank 2. A sealing assembly 4 is provided on the outer side of the feeding trough 21. The sealing assembly 4 includes a sealing plate 42. The outer wall of the sealing plate 42 abuts against the inner wall of the feeding trough 21. The bottom of the sealing plate 42 has an arc surface structure, and the arc curvature of the bottom of the sealing plate 42 is the same as the arc curvature of the inner wall of the preparation tank 2. The sealing assembly 4 also includes mounting plates 41. Two mounting plates 41 are provided and fixedly installed on both sides of the feeding trough 21 on the outer wall of the preparation tank 2. Multiple support plates 411 are fixedly installed on the mounting plate 41. A threaded screw 413 is inserted into the support plate 411 on the side away from the feeding trough 21. The end of the screw 413 is provided with a rotatably connected limit frame 412. The outer wall of the limit frame 412 abuts against and slides against the inner wall of the other support plates 411. Limit plates 421 are fixedly connected on both sides of the top of the sealing plate 42. The inner wall of the limit plate 421 abuts against and slides against the outer wall of the limit frame 412.

[0030] It should be noted that: since the arc of the bottom of the sealing plate 42 is the same as the arc of the inner wall of the mixing tank 2, after the sealing plate 42 is embedded in the feeding trough 21, the arc of the bottom of the sealing plate 42 can form a whole with the arc of the inner wall of the mixing tank 2. This can prevent the raw materials entering the mixing tank 2 from getting stuck in the uneven gaps inside the mixing tank 2, which would cause the raw materials to not be mixed properly. In addition, the relatively flat inner wall of the mixing tank 2 can also allow the scraper 321 to slide smoothly inside the mixing tank 2 later.

[0031] In this embodiment: by setting up the lead screw 413, when the lead screw 413 rotates to drive the limiting frame 412 to be inserted into the limiting piece 421, the sealing piece can be limited and fixed, thereby preventing the sealing plate 42 from falling out of the feeding groove 21 at will. Therefore, the feeding groove 21 can be stably sealed. At the same time, in order to improve the stability of the lead screw 413 in later use, a lead screw protective sleeve can be fitted on the outside of the lead screw 413 to protect the threads on the lead screw 413, thereby reducing the phenomenon of impurities falling on the threads of the lead screw 413 and causing thread jamming during later use.

[0032] In the embodiments of this utility model, please refer to Figures 1 to 4 The frame 1 is provided with a plurality of fixedly connected guide rods 11 and a rotatably connected drive rod 12. The outer wall of the guide rod 11 is fixedly connected to the inner wall of the preparation tank 2 and the sealing plate 31. The frame 1 is fixedly installed with a drive motor 13 for driving the drive rod 12. The outer wall of the drive rod 12 is rotatably connected to the inner wall of the preparation tank 2, and the outer wall of the drive rod 12 is threadedly connected to the inner wall of the sealing plate 31.

[0033] It should be noted that by rotatably connecting the drive rod 12 to the preparation tank 2 and threadedly connecting the drive rod 12 to the sealing disc 31, when the drive motor 13 drives the drive rod 12 to rotate, the rotating drive rod 12 can drive the sealing disc 31 to move along the guide rod 11 on the outer wall of the guide rod 11 through the threaded structure. The moving sealing disc 31 can drive the mixing rod 32 and the scraper 321 to move synchronously. At this time, the moving scraper 321 can scrape the inner wall of the preparation tank 2.

[0034] It is also necessary to note that in order to improve the protection effect on the threads of the connection between the drive rod 12 and the sealing disc 31, a screw protective sleeve can be fitted on the outside of the drive rod 12 to protect the thread structure on the drive rod 12.

[0035] The working principle of the polymer fracturing fluid preparation device provided by this utility model is as follows:

[0036] When using this fracturing fluid preparation device to prepare fracturing fluid, the plugging plate 42 can be removed from the feeding tank 21 first. Then, the raw materials required for fracturing fluid preparation can be added into the preparation tank 2 through the feeding tank 21. After the raw materials are added, the plugging assembly can be placed in the feeding tank 21, and the screw 413 can be rotated. The rotating screw 413 can drive the limiting frame 412 to move inside the support plate 411 through the threaded structure until the limiting frame 412 is inserted into the limiting plate 421, thus completing the limiting of the plugging plate installation.

[0037] Then the rotating motor 311 in the mixing component 3 can be controlled to drive the mixing rod 32 to rotate. The rotating mixing rod 32 can drive the mixing frame 322 on the outer wall to rotate, thereby realizing the stirring and mixing of the raw materials in the preparation tank 2. When the mixing and preparation of the raw materials is completed and discharge is required, the collection cylinder used to collect the fracturing fluid can be placed below the side of the preparation tank 2 near the sealing plate 31.

[0038] Then the drive motor 13 can be controlled to rotate, and the rotating drive motor 13 can drive the corresponding drive rod 12 to rotate. At this time, the rotating drive rod 12 can drive the sealing disc 31 to move on the outer wall of the guide rod 11 through the threaded structure of the connection part with the sealing disc 31 on the outer wall.

[0039] The moving sealing disc 31 will drive the scraper 321 located inside the preparation tank 2 to move synchronously through the mixing rod 32 and the mixing frame 322. At this time, the moving scraper 321 can push the fracturing fluid prepared inside the preparation tank 2 outward by abutting against the inner wall of the preparation tank 2, so that the fracturing fluid can flow out smoothly until the scraper 321 is completely removed from the inside of the preparation tank 2, and the fracturing fluid can be fully discharged.

[0040] Meanwhile, the external mixing component 3 allows workers to easily clean the fracturing fluid adhering to it, thereby reducing the residue of fracturing fluid during discharge. This completes the use of the device.

[0041] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0042] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A polymer fracturing fluid preparation apparatus, characterized in that, include: A frame (1) is provided on which a fixedly connected preparation tank (2) is mounted, and a movablely connected mixing component (3) is inserted inside the preparation tank (2); The mixing assembly (3) includes a sealing disc (31), the outer wall of which abuts against the inner wall of one end of the opening of the preparation tank (2), and a rotatably connected mixing rod (32) is provided on the sealing disc (31). A rotatably connected scraper (321) is installed at the end of the mixing rod (32), and the outer wall of the scraper (321) abuts against and is slidably connected to the inner wall of the preparation tank (2). A mixing frame (322) is fixedly connected to the outer wall of the mixing rod (32), and a rotary motor (311) for driving the mixing rod (32) is fixedly installed on the sealing disc (31).

2. The polymer fracturing fluid preparation apparatus according to claim 1, characterized in that, The outer wall of the preparation tank (2) is provided with a feeding groove (21). A sealing component (4) is provided on the outer side of the feeding groove (21) on the outer wall of the preparation tank (2). The sealing component (4) includes a sealing plate (42). The outer wall of the sealing plate (42) abuts against the inner wall of the feeding groove (21). The bottom of the sealing plate (42) is an arc surface structure, and the arc curvature of the bottom of the sealing plate (42) is the same as the arc curvature of the inner wall of the preparation tank (2).

3. The polymer fracturing fluid preparation apparatus according to claim 2, characterized in that, The sealing assembly (4) also includes a mounting plate (41), which has two mounting plates and is fixedly installed on both sides of the feeding trough (21) on the outer wall of the preparation tank (2). Multiple support plates (411) are fixedly installed on the mounting plate (41), and a threaded rod (413) is inserted into the support plate (411) on the side away from the feeding trough (21).

4. The polymer fracturing fluid preparation apparatus according to claim 3, characterized in that, The end of the lead screw (413) is provided with a rotatably connected limiting frame (412), and the outer wall of the limiting frame (412) abuts against and slides with the inner wall of the other support pieces (411).

5. The polymer fracturing fluid preparation apparatus according to claim 4, characterized in that, Both sides of the top of the sealing plate (42) are fixedly connected with limiting pieces (421), and the inner wall of the limiting piece (421) abuts against and slides against the outer wall of the limiting frame (412).

6. The polymer fracturing fluid preparation apparatus according to claim 1, characterized in that, The frame (1) is provided with a plurality of fixedly connected guide rods (11) and a rotatably connected drive rod (12), and the outer wall of the guide rods (11) is fixedly connected to the inner wall of the preparation tank (2) and the sealing plate (31).

7. The polymer fracturing fluid preparation apparatus according to claim 6, characterized in that, A drive motor (13) for driving the drive rod (12) is fixedly installed on the frame (1). The outer wall of the drive rod (12) is rotatably connected to the inner wall of the preparation tank (2), and the outer wall of the drive rod (12) is threadedly connected to the inner wall of the sealing disc (31).

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