Fracturing fluid mixing and preparation system

Abstract

The utility model provides a kind of fracturing fluid mixing and preparing system, it is related to fracturing fluid mixing technical field, including vibrating screen and conveying mechanism, the vibrating screen has accommodating cavity and is equipped with the feed inlet and discharge port being communicated with the accommodating cavity, the accommodating cavity is used to accommodate material, the discharge port is at least two and interval arrangement in the outer circumferential surface of vibrating screen, and the discharge particle size of any two discharge ports is different;The conveying mechanism is used to convey storage cylinder, and the storage cylinder is used to contain material.The utility model can automatically screen drag-reducing agent and temporary plugging agent, to collect drag-reducing agent and temporary plugging agent of different particle size range, realize the convenient material preparation before fracturing fluid mixing, so different specifications of fracturing fluid preparation requirement can be satisfied.

Description

Technical Field

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

[0002] The main components of fracturing fluid include water, drag reducers, and temporary plugging agents. Drag reducers and temporary plugging agents are commonly in the form of powder or granules. Different particle sizes are suitable for fracturing operations in different scenarios. For example, when fracturing tight zones, small-particle drag reducers (<100μm) + small-particle temporary plugging agents (<50μm) are required, while when fracturing high-permeability zones, medium-particle drag reducers (100-500μm) + large-particle temporary plugging agents (>200μm) are required.

[0003] In order to ensure the efficiency of fracturing operations, materials are usually prepared before fracturing fluid mixing. However, different fracturing operations require different particle sizes of drag-reducing agents and temporary plugging agents. The method of manually sorting drag-reducing agents and temporary plugging agents for preparation is inconvenient and cannot meet the requirements of fracturing fluid preparation for different specifications. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of this utility model propose a fracturing fluid preparation system. This fracturing fluid preparation system can automatically screen drag-reducing agents and temporary plugging agents to collect drag-reducing agents and temporary plugging agents with different particle size ranges, realizing convenient preparation of materials before fracturing fluid preparation, thereby meeting the preparation requirements of fracturing fluids of different specifications.

[0006] A fracturing fluid mixing and preparation system according to an embodiment of the present invention includes a vibrating screen and a conveying mechanism. The vibrating screen has a receiving cavity and is provided with an inlet and an outlet communicating with the receiving cavity. The receiving cavity is used to receive materials. There are at least two outlets arranged at intervals on the outer circumferential surface of the vibrating screen, and the discharge particle size of any two outlets is different. The conveying mechanism is used to convey a storage cylinder, and the storage cylinder is used to hold materials.

[0007] According to the fracturing fluid mixing preparation system of this utility model embodiment, a vibrating screen can automatically screen the materials contained in the receiving cavity so that materials of different particle size ranges can be discharged from different outlets. The conveying mechanism can transport the storage cylinder to the vibrating screen so that the storage cylinder can be moved to the outlet to receive materials of the corresponding particle size range. After the storage cylinder is full or contains a set height of materials, it can be moved to the conveying mechanism for continued conveying, so as to ensure the continuous operation of the preparation system, minimize the intensity of manual labor, and improve the efficiency of fracturing operations. Therefore, compared with related technologies, when the materials in the preparation system are drag-reducing agents or temporary plugging agents, this utility model can automatically screen drag-reducing agents and temporary plugging agents to collect drag-reducing agents and temporary plugging agents of different particle size ranges, realize convenient preparation of materials before fracturing fluid mixing, and thus meet the preparation requirements of fracturing fluid of different specifications.

[0008] In some embodiments, the material is a drag reducer or a temporary plugging agent, and there are at least two vibrating screens, wherein the cavity of one of the two vibrating screens is used to contain the drag reducer and the cavity of the other is used to contain the temporary plugging agent.

[0009] In some embodiments, the vibrating screen is a rotary vibrating screen, and any two adjacent discharge ports are arranged at intervals along the vertical direction.

[0010] In some embodiments, the material preparation system further includes a lifting driver and a tray. The lifting driver is located below the discharge port, and there are at least two lifting drivers, each corresponding to one of the discharge ports. The telescopic end of the lifting driver is connected to the tray to push and pull the tray in the vertical direction. The tray is located below the discharge port and is used to support the storage cylinder. There are at least two trays, each corresponding to one of the lifting drivers.

[0011] In some embodiments, the material preparation system further includes a transfer mechanism, which is connected to the conveying mechanism and the vibrating screen to transfer the storage cylinder.

[0012] In some embodiments, there are at least two transfer mechanisms, each corresponding to one of the vibrating screens.

[0013] In some embodiments, the transfer mechanism includes a first driver, a rotary driver, a second driver, and a clamping block.

[0014] Wherein, the movable end of the first driver is connected to the mounting end of the rotary driver to adjust the position of the rotary driver relative to the storage cylinder in a first direction;

[0015] The movable end of the rotary driver is connected to the mounting end of the second driver to drive the second driver to rotate relative to the storage cylinder;

[0016] The movable end of the second driver is connected to the clamping block to adjust the position of the clamping block relative to the storage cylinder in the second direction, wherein the first direction, the second direction, and the up and down direction are perpendicular to each other.

[0017] In some embodiments, the clamping block has a clamping surface facing the storage cylinder, the clamping surface being adapted to contact the outer peripheral surface of the storage cylinder, the clamping surface being an arc-shaped surface and protruding toward a side away from the storage cylinder.

[0018] In some embodiments, the storage cylinder is a magnetic storage cylinder, or the storage cylinder is coated with a magnetic material.

[0019] The clamping block is equipped with an electromagnet, which has an energized state and an de-energized state. When the electromagnet is energized, the clamping block is attracted to the storage cylinder. When the electromagnet is de-energized, the clamping block is separated from the storage cylinder.

[0020] In some embodiments, the material preparation system further includes a mounting platform disposed below the vibrating screen to support the vibrating screen;

[0021] There are at least two mounting platforms, and each of the at least two mounting platforms corresponds to at least two vibrating screens.

[0022] In some embodiments, the conveying mechanism includes a frame and a conveyor belt, the conveyor belt being disposed on the frame and used to convey the storage cylinder.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the first structure of a fracturing fluid mixing and preparation system according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the second structure of the fracturing fluid mixing and preparation system according to an embodiment of the present utility model.

[0026] Figure 3 This is a schematic diagram of the transfer mechanism in the fracturing fluid mixing and preparation system according to an embodiment of the present invention.

[0027] Figure label:

[0028] 1. Vibrating screen; 11. Receiving cavity; 12. Feed inlet; 13. Discharge outlet;

[0029] 2. Conveying mechanism; 21. Frame; 22. Conveyor belt;

[0030] 3. Storage cylinder;

[0031] 4. Lifting drive;

[0032] 5. Pallet;

[0033] 6. Transfer mechanism; 61. First driver; 62. Rotary driver; 63. Second driver; 64. Clamping block; 641. Clamping surface;

[0034] 7. Installation platform. Detailed Implementation

[0035] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] like Figure 1 As shown in the figure, a fracturing fluid mixing and preparation system according to an embodiment of the present invention includes a vibrating screen 1 and a conveying mechanism 2. The vibrating screen 1 has a receiving cavity 11 and is provided with an inlet 12 and an outlet 13 communicating with the receiving cavity 11. The receiving cavity 11 is used to receive materials. There are at least two outlets 13, which are arranged at intervals on the outer peripheral surface of the vibrating screen 1. The discharge particle size of any two outlets 13 is different. The conveying mechanism 2 is used to convey a storage cylinder 3, which is used to hold materials.

[0037] According to the fracturing fluid mixing preparation system of this utility model embodiment, the vibrating screen 1 can automatically screen the material contained in the receiving cavity 11 so that materials of different particle size ranges can be discharged from different outlets 13. The conveying mechanism 2 can transport the storage cylinder 3 to the vibrating screen 1 so that the storage cylinder 3 can be transferred to the outlet 13 to receive materials of the corresponding particle size range. After the storage cylinder 3 is full or contains a set height of material, it can be transferred to the conveying mechanism 2 for continued conveying, so as to ensure the continuous operation of the preparation system, minimize the intensity of manual labor, and improve the efficiency of fracturing operations. Therefore, compared with related technologies, when the material in the preparation system is a drag reducer or a temporary plugging agent, this utility model can automatically screen the drag reducer and temporary plugging agent to collect drag reducers and temporary plugging agents of different particle size ranges, realize convenient preparation of materials before fracturing fluid mixing, and thus meet the preparation requirements of fracturing fluid of different specifications.

[0038] Specifically, the feed inlet 12 can be located at the top of the vibrating screen 1 to facilitate the addition of material to the receiving cavity 11. The discharge outlet 13 is located below the feed inlet 12 in the vertical direction, so that the material can be automatically discharged from the discharge outlet 13 under gravity after being screened in the receiving cavity 11. The specific structure and working principle of the vibrating screen 1 can adopt the existing technology in this field, and will not be elaborated here.

[0039] It should be noted that drag-reducing agents are used to reduce the flow resistance of fracturing fluid in pipelines and fractures, while temporary plugging agents are used to temporarily seal high-permeability layers or existing fractures, forcing the fracturing fluid to flow into unmodified areas.

[0040] like Figure 2 As shown, in some embodiments, the material is a drag reducer or a temporary blocker, and there are at least two vibrating screens 1, wherein the receiving cavity 11 of one of the two vibrating screens 1 is used to receive the drag reducer, and the receiving cavity 11 of the other is used to receive the temporary blocker.

[0041] Understandably, designing at least two vibrating screens 1, with one vibrating screen 1 used for screening drag-reducing agents and the other vibrating screen 1 used for screening temporary blockage agents, can simultaneously achieve automatic screening and preparation of drag-reducing agents and temporary blockage agents. Compared to setting only one vibrating screen 1, which requires time-sharing screening and preparation of drag-reducing agents and temporary blockage agents, the scheme of at least two vibrating screens 1 further improves the working efficiency of the preparation system.

[0042] For example, as shown in the figure, there are two vibrating screens 1, which are located on both sides of the width direction of the conveying mechanism 2. The same conveying mechanism 2 provides storage cylinders 3 for both vibrating screens 1, which can reduce production costs and make the overall structure of the material preparation system compact.

[0043] like Figure 1 As shown, in some embodiments, the vibrating screen 1 is a rotary vibrating screen, and any two adjacent discharge ports 13 are arranged at intervals along the vertical direction.

[0044] Understandably, the use of a vibrating screen structure can make the material preparation system operate with low noise, high efficiency and good screening effect. At the same time, the vibrating screen has the advantages of small size, light weight, easy movement and adjustable discharge port in 13 directions. In addition, the vertical structure of the vibrating screen can further reduce the space occupied by the material preparation system.

[0045] Specifically, any two adjacent discharge ports 13 are arranged at intervals along the vertical direction, and on the projection surface in the vertical direction, the projections of any two adjacent discharge ports 13 are arranged at intervals in the circumferential direction of the vibrating screen 1, so that each discharge port 13 does not affect each other, and ensures that the storage cylinder 3 can smoothly complete the receiving of materials at each discharge port 13.

[0046] like Figure 1 and Figure 2 As shown, in some embodiments, the conveying mechanism 2 includes a frame 21 and a conveyor belt 22. The conveyor belt 22 is disposed on the frame 21 and is used to convey the storage cylinder 3. The use of the conveyor belt 22 simplifies the overall structure of the material preparation system and enables stable transportation of the storage cylinder 3.

[0047] like Figure 1 and Figure 2 As shown, in some embodiments, the material preparation system further includes a lifting driver 4 and a pallet 5. The lifting driver 4 is located below the discharge port 13. There are at least two lifting drivers 4, each corresponding to a discharge port 13. The telescopic end of the lifting driver 4 is connected to the pallet 5 to push and pull the pallet 5 in the vertical direction. The pallet 5 is located below the discharge port 13 and is used to support the storage cylinder 3. There are at least two pallets 5, each corresponding to a lifting driver 4.

[0048] It is understandable that the lifting drive 4 can drive the pallet 5 to move up and down in the vertical direction so that after the storage cylinder 3 is placed on the pallet 5, the lifting drive 4 can move the storage cylinder 3 to the lower side of the corresponding discharge port 13, so as to avoid the problem of excessive vertical distance between the discharge port 13 and the storage cylinder 3, which may easily cause material spillage during discharge. After the loading is completed, the lifting drive 4 drives the pallet 5 to move down to facilitate the removal of the storage cylinder 3 from the pallet 5.

[0049] Specifically, the lifting drive 4 can be a telescopic cylinder, which is not limited to a hydraulic cylinder, electric cylinder, oil cylinder, or pneumatic cylinder. The cylinder body of the telescopic cylinder can be fixed to the ground, and the piston rod of the telescopic cylinder can be connected to the bottom of the support plate 5. The top of the support plate 5 is used to support the storage cylinder 3.

[0050] like Figure 1 and Figure 2 As shown, in some embodiments, the material preparation system further includes a transfer mechanism 6, which is connected to the conveying mechanism 2 and the vibrating screen 1 to transfer the storage cylinder 3.

[0051] It is understandable that the transfer mechanism 6 enables the automatic transfer of the storage cylinder 3 between the conveying mechanism 2 and the vibrating screen 1, so as to automatically collect drag-reducing agents and temporary plugging agents of different particle size ranges. This allows for convenient material preparation before fracturing fluid mixing, meets the fracturing fluid preparation requirements of different specifications, improves the automation level of the material preparation system, and further reduces the intensity of manual labor.

[0052] Specifically, the transfer mechanism 6 can transfer the empty storage cylinder 3 to the tray 5 below the vibrating screen 1 to receive the material, or the transfer mechanism 6 can transfer the storage cylinder 3 that has been filled with material to the conveying mechanism 2 for continued conveying.

[0053] like Figure 2 As shown, in some embodiments, there are at least two transfer mechanisms 6, each corresponding to one of the vibrating screens 1, so that the storage cylinder 3 can be transferred between the conveying mechanism 2 and the corresponding vibrating screen 1 through the transfer mechanism 6, so that each vibrating screen 1 can work independently and smoothly, and ensure the working efficiency of the material preparation system.

[0054] For example, as shown in the figure, the transfer mechanism 6 can be arranged on the side of the vibrating screen 1 and on both sides of the width direction of the conveying mechanism 2 to further improve the overall structural compactness of the material preparation system and reduce space occupation.

[0055] like Figure 3 As shown, in some embodiments, the transfer mechanism 6 includes a first driver 61, a rotary driver 62, a second driver 63, and a clamping block 64.

[0056] The movable end of the first driver 61 is connected to the mounting end of the rotary driver 62 to adjust the position of the rotary driver 62 relative to the storage cylinder 3 in the first direction.

[0057] The movable end of the rotary driver 62 is connected to the mounting end of the second driver 63 to drive the second driver 63 to rotate relative to the storage cylinder 3.

[0058] The movable end of the second driver 63 is connected to the clamping block 64 to adjust the position of the clamping block 64 relative to the storage cylinder 3 in the second direction. The first direction, the second direction and the up and down direction are perpendicular to each other.

[0059] It is understood that the position of the clamping block 64 relative to the storage cylinder 3 in the first direction can be adjusted by the first driver 61, the rotary driver 62 is used to adjust the angle of the clamping block 64 relative to the storage cylinder 3, and the second driver 63 can adjust the position of the clamping block 64 relative to the storage cylinder 3 in the second direction. That is, the transfer mechanism 6 can construct a three-dimensional pose adjustment system of the clamping block 64 in space so that the clamping block 64 can be directly aligned with the storage cylinder 3 for clamping, ensuring the clamping reliability of the clamping block 64 on the storage cylinder 3, and preventing the storage cylinder 3 from falling off the clamping block 64 due to not being clamped when the transfer mechanism 6 transfers the storage cylinder 3 between the conveying mechanism 2 and the pallet 5.

[0060] Specifically, the first actuator 61 can be a telescopic cylinder, such as a rodless linear cylinder. The rotary actuator 62 can be a rotary motor or a rotary cylinder. When the rotary actuator 62 is a rotary motor, the motor shaft of the rotary motor is connected to the mounting end of the second actuator 63 to drive the second actuator 63 to rotate. The second actuator 63 can be a single-axis linear cylinder, and the piston rod of the second actuator 63 is connected to the clamping block 64. The first direction can be the left-right direction in the figure, that is, the width direction of the conveying mechanism 2, and the second direction can be the front-back direction in the figure, that is, the conveying direction of the conveying mechanism 2.

[0061] like Figure 3 As shown, in some embodiments, the clamping block 64 has a clamping surface 641 facing the storage cylinder 3, the clamping surface 641 is adapted to contact the outer peripheral surface of the storage cylinder 3, and the clamping surface 641 is an arc-shaped surface and protrudes toward the side away from the storage cylinder 3.

[0062] It is understandable that because the clamping surface 641 is in contact with the outer peripheral surface of the storage cylinder 3, the contact area between the clamping block 64 and the storage cylinder 3 can be increased, further ensuring the clamping reliability between the two. Designing the clamping surface 641 as an arc surface allows the clamping block 64 to have good contact with the outer peripheral surface of the storage cylinder 3.

[0063] Specifically, the side of the clamping block 64 opposite to the clamping surface 641 is connected to the movable end of the second driver 63, i.e., the piston rod of the second driver 63. The curvature of the clamping surface 641 matches the curvature of the outer peripheral surface of the storage cylinder 3, so as to ensure that when the clamping block 64 clamps the storage cylinder 3, the clamping surface 641 of the clamping block 64 can fit against the outer peripheral surface of the storage cylinder 3. Both the clamping block 64 and the storage cylinder 3 can extend in the vertical direction to further increase the contact area between the clamping surface 641 and the outer peripheral surface of the storage cylinder 3.

[0064] like Figure 1 and Figure 2 As shown, in some embodiments, the storage cylinder 3 is a magnetic storage cylinder 3, that is, the storage cylinder 3 is made of magnetic material, or the storage cylinder 3 is coated with a magnetic material. Preferably, the outer peripheral surface of the storage cylinder 3 is coated with a magnetic material to ensure the reliability of the adsorption of the clamping block 64 on the outer peripheral surface of the storage cylinder 3 in the later stage.

[0065] The clamping block 64 is equipped with an electromagnet, which has an energized state and an de-energized state. When the electromagnet is energized, the clamping block 64 is attracted to the storage cylinder 3. When the electromagnet is de-energized, the clamping block 64 is separated from the storage cylinder 3.

[0066] Understandably, the clamping block 64 can conveniently clamp the storage cylinder 3 through the magnetic attraction of electromagnets and magnetic materials. The overall structure is simple and highly operable.

[0067] Specifically, the clamping surface 641 of the clamping block 64 may be equipped with an electromagnet, or the clamping block 64 as a whole may be an arc-shaped electromagnet, the curvature of which matches the curvature of the outer circumference of the storage cylinder 3. The wiring terminals of the arc-shaped electromagnet may be located at its bottom and connected to wires. For ease of illustration, the wiring terminals and wires are omitted in the figure. The working principle of the arc-shaped electromagnet can adopt the existing technology in this field, and will not be described in detail here.

[0068] like Figure 1 and Figure 2 As shown, in some embodiments, the material preparation system also includes a mounting platform 7, which is located below the vibrating screen 1 to support the vibrating screen 1, so as to realize the stable placement of the vibrating screen 1 on the side of the conveying mechanism 2, and facilitate the material transfer operation between the discharge port 13 and the storage cylinder 3.

[0069] There are at least two mounting platforms 7, and each of the at least two mounting platforms 7 corresponds to at least two vibrating screens 1.

[0070] The working process of this fracturing fluid mixing and preparation system will now be described in detail, based on its specific structure:

[0071] 1) Add drag-reducing agent and temporary blockage agent to the two vibrating screens 1 respectively;

[0072] 2) Start the conveying mechanism 2 to transport the storage cylinder 3;

[0073] 3) Start the first driver 61, the rotary driver 62 and the second driver 63 to adjust the clamping block 64 to the corresponding storage cylinder 3, energize the electromagnet, or in other words make the electromagnet energized, so that the clamping block 64 can attract the storage cylinder 3 and move the storage cylinder 3 to the tray 5.

[0074] 4) Control the pallet 5 to descend relative to the discharge port 13 by lifting drive 4, place the storage cylinder 3 on the pallet 5, and then drive the pallet 5 to rise relative to the discharge port 13 until the storage cylinder 3 is close to the discharge port 13, the extension end of the lifting drive 4 stops rising, and the electromagnet is de-energized.

[0075] 5) Move the clamping block 64 away from the storage cylinder 3, and repeat steps 3) and 4) above until a storage cylinder 3 is placed below each discharge port 13;

[0076] 6) Start the vibrating screen 1 to automatically collect drag-reducing agents and temporary blockage agents of different particle sizes from the storage cylinder 3;

[0077] 7) Turn off the vibrating screen 1, and then transfer the storage cylinder 3 containing the material to the conveying mechanism 2 through the transfer mechanism 6 to continue conveying, thereby completing the convenient material preparation before fracturing fluid mixing.

[0078] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0080] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0081] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0082] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0083] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A system for preparing materials for fracturing fluid mixing, characterized in that, include: A vibrating screen has a receiving cavity and is provided with an inlet and an outlet communicating with the receiving cavity. The receiving cavity is used to receive materials, and there are at least two outlets arranged at intervals on the outer peripheral surface of the vibrating screen. The discharge particle size of any two outlets is different. A conveying mechanism is used to convey a storage cylinder, which is used to hold materials.

2. The proppant blending system of claim 1, wherein, The material is a drag-reducing agent or a temporary plugging agent, and there are at least two vibrating screens, one of which has a cavity for containing the drag-reducing agent and the other has a cavity for containing the temporary plugging agent.

3. The proppant blending system of claim 1, wherein, The vibrating screen is a rotary vibrating screen, and any two adjacent discharge ports are arranged at intervals along the vertical direction.

4. The proppant blending system of claim 1, wherein, Also includes: A lifting driver is provided below the discharge port, and there are at least two lifting drivers, each corresponding to one of the discharge ports; The pallet is connected to the telescopic end of the lifting driver to push and pull the pallet in the vertical direction. The pallet is located below the discharge port and is used to support the storage cylinder. There are at least two pallets, each corresponding to one of the lifting drivers.

5. The proppant blending system of claim 1, wherein, It also includes a transfer mechanism, which is connected to the conveying mechanism and the vibrating screen to transfer the storage cylinder.

6. The proppant preparation system of claim 5, wherein, The transfer mechanism includes: A first driver and a rotary driver, wherein the movable end of the first driver is connected to the mounting end of the rotary driver to adjust the position of the rotary driver relative to the storage cylinder in a first direction; The second driver, wherein the movable end of the rotary driver is connected to the mounting end of the second driver to drive the second driver to rotate relative to the storage cylinder; A clamping block is provided, with the movable end of the second driver connected to the clamping block to adjust the position of the clamping block relative to the storage cylinder in a second direction, wherein the first direction, the second direction, and the up-down direction are perpendicular to each other.

7. The proppant preparation system of claim 6, wherein, The clamping block has a clamping surface facing the storage cylinder, the clamping surface being adapted to contact the outer peripheral surface of the storage cylinder, the clamping surface being an arc-shaped surface and protruding toward the side away from the storage cylinder.

8. The proppant preparation system of claim 6, wherein, The storage cylinder is a magnetic storage cylinder, or the storage cylinder is coated with a magnetic material. The clamping block is equipped with an electromagnet, which has an energized state and an de-energized state. When the electromagnet is energized, the clamping block is attracted to the storage cylinder. When the electromagnet is de-energized, the clamping block is separated from the storage cylinder.

9. The proppant blending system of claim 2, wherein, It also includes a mounting platform, which is located below the vibrating screen to support the vibrating screen; There are at least two mounting platforms, and each of the at least two mounting platforms corresponds to at least two vibrating screens.

10. The proppant blending system of any of claims 1-9, wherein, The conveying mechanism includes a frame and a conveyor belt, the conveyor belt being disposed on the frame and used to convey the storage cylinder.

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