Operation system for wet fracturing sand well site

Abstract

The utility model provides an operating system for a wet fracturing sand well site, which comprises a wet fracturing sand conveying device, a transportation device and sand mixing equipment, and the wet fracturing sand conveying device at least comprises a buffer component and a conveying device, the wet fracturing sand conveying device receives the wet fracturing sand conveyed by at least one conveying device through the buffering assembly and conveys the wet fracturing sand to the sand mixing equipment through the conveying device. According to the embodiment of the utility model, the blanking of the wet fracturing sand conveyed by at least one conveying device can be realized at the same time, the blanking efficiency is improved, and the wet fracturing sand is subjected to various treatments such as vibration, stirring and the like in the conveying process of the wet fracturing sand, so that the condition that the wet fracturing sand is gathered due to lower water content is avoided, and the quality of the wet fracturing sand is improved. And the effect of subsequent fracturing operation is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of fracturing sand transportation, specifically to an operating system for wet fracturing sand well sites. Background Technology

[0002] The oil and gas industry commonly uses hydraulic fracturing to increase the production of hydrocarbon production wells, such as oil and gas wells. Hydraulic fracturing, sometimes called "fracking" or "water fracturing," is the process of injecting fracturing fluid into the wellbore. Fracturing fluid is typically a mixture of water, proppant (such as sand, fracturing sand, ceramics, etc.), and chemicals to disrupt underground geological structures and release hydrocarbon reserves. Fracturing fluid is pumped into the wellbore at sufficient pressure to create fractures in the underground geological structure. Once inside the wellbore, the pressurized fracturing fluid flows into the underground geological formation, fracturing it. Fracturing fluid may include water, various chemical additives, and proppants to facilitate the extraction of hydrocarbon reserves such as oil and gas. Proppants, such as fracturing sand, prevent the closure of fractures and fractures in the underground formation, keeping the formation open so that oil and gas reserves can flow to the surface.

[0003] Hydraulic fracturing typically uses large quantities of sand (e.g., approximately 6,000 to 7,000 tons per well) to aid in well fracturing. Before being transported to the well site, the sand undergoes processing: (1) removal of impurities; (2) drying the fracturing sand to meet fracturing transport requirements; and (3) adapting it for metering into a mixing process using conventionally employed hydraulic fracturing equipment (e.g., fracturing mixers) to produce slurry or fracturing fluid. Mining and / or processing operators initially extract fracturing sand from sand deposits containing quartz particles with desired properties (e.g., relatively high crushing strength and roundness). To meet fracturing criteria, operators process the extracted sand by washing it to remove impurities and subsequently drying it to remove moisture. Mining operators may then further filter out sand particles that do not meet specific size criteria for fracturing operations. Once processing is complete, operators load and transport the fracturing sand to the well site, which may be hundreds of kilometers from its origin, using specialized railcars, trailers (e.g., hopper trailers and pneumatic containers), and trucks that protect the fracturing sand from environmental exposure. Operators store dry fracturing sand at various points along the supply chain using silos, dome silos, and other large and expensive storage containers. Keeping fracturing sand dry before mixing it to form fracturing fluid increases the operator's ability to reliably control and meter the flow of fracturing sand. In contrast, wet fracturing sand often clumps together, resulting in less consistent flow and greater difficulty in metering it for fracturing purposes. However, drying, transporting, and storing large quantities of dry fracturing sand increases the financial, operational, and logistical costs associated with fracturing operations.

[0004] Existing well site conveying systems often only allow for the unloading of wet fracturing sand from a single transport truck, resulting in low unloading efficiency. Furthermore, conventional sand mixing equipment includes an auger, which uses spiral motion to transport dry fracturing sand from the transport truck or storage tank to the mixing tank. Fracturing sand typically has a certain moisture content. If the wet fracturing sand has a high moisture content, its good fluidity allows for easy transport via the auger. However, if the moisture content is low, the sand's poor fluidity causes it to clump together. Therefore, when the auger blades rotate in a confined space, there is a risk of the auger blades getting stuck or blocked, affecting fracturing and sand fracturing operations. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide an operating system for wet fracturing sand well sites, so as to solve the problems of low material discharge efficiency and wet fracturing sand easily agglomerating together in the prior art, which affect fracturing and sand fracturing operations.

[0006] To address the aforementioned technical problems, embodiments of this utility model provide an operating system for wet fracturing sand well sites, comprising a wet fracturing sand conveying device, a transport device, and a sand mixing device. The wet fracturing sand conveying device includes at least a buffer component and a belt conveyor. The wet fracturing sand conveying device receives at least one wet fracturing sand transported by the transport device through the buffer component and conveys it to the sand mixing device through the belt conveyor.

[0007] In some embodiments, there are multiple transport devices arranged side by side in a direction perpendicular to the extension direction of the belt conveyor.

[0008] In some embodiments, the buffer assembly includes a buffer unit, the belt conveyor includes a base, a conveyor belt and a lifting device are disposed on the base, the conveyor belt is inclined, its first end corresponds to the discharge port of the buffer unit, the second end of the conveyor belt is provided with a discharge device, one end of the lifting device is connected to the base, and the other end of the lifting device is connected to the conveyor belt to adjust the inclination angle of the conveyor belt.

[0009] In some embodiments, the belt conveyor further includes a weighing component for weighing wet fracturing sand.

[0010] In some embodiments, a plurality of the transport devices are arranged side by side along the direction of extension of the belt conveyor.

[0011] In some embodiments, the buffer assembly includes multiple buffer units, the belt conveyor includes a base, a first-stage conveyor belt and a second-stage conveyor belt are sequentially arranged on the base, the first-stage conveyor belt and the second-stage conveyor belt are both inclined relative to the base, and a feeding device is arranged on the second-stage conveyor belt.

[0012] In some embodiments, a plurality of the buffer units are arranged side by side in sequence along the extension direction of the first-stage conveyor belt.

[0013] In some embodiments, a lifting device is provided on the base, one end of the lifting device is connected to the base, and the other end of the lifting device is connected to the second-stage conveyor belt.

[0014] In some embodiments, the buffer unit has at least one function of vibration, filtration, and stirring.

[0015] In some embodiments, the transport device is at least one of a sand truck, a dump truck, or a loader.

[0016] This utility model embodiment can simultaneously realize the unloading of wet fracturing sand transported by at least one transport device, improving the unloading efficiency. Furthermore, during the transport of wet fracturing sand, it undergoes various treatments such as vibration and stirring to prevent the wet fracturing sand from agglomerating due to its low moisture content, thereby improving the effect of subsequent fracturing operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the arrangement of the belt conveyor in a wet fracturing sand conveying device according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the arrangement of the belt conveyor in a wet fracturing sand conveying device according to an embodiment of the present invention;

[0020] Figure 3 This invention provides a schematic diagram of the conveyor belt structure of the belt conveyor in a wet fracturing sand conveying device according to another embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the arrangement of the screw conveyor in a wet fracturing sand conveying device according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the buffer unit in a wet fracturing sand conveying device according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the arrangement of the belt conveyor in a wet fracturing sand conveying device according to another embodiment of the present invention;

[0024] Figure 7 A schematic diagram of the buffer unit in a wet fracturing sand conveying device provided in another embodiment of this utility model;

[0025] Figure 8 This is a schematic diagram of the feeding device in a wet fracturing sand conveying device provided in another embodiment of the present invention.

[0026] Figure 9 One of the schematic diagrams of the layout of an operating system for a wet fracturing sand well site provided in an embodiment of the present invention;

[0027] Figure 10 A schematic diagram of the layout of an operating system for wet fracturing sand well sites provided in one embodiment of this utility model;

[0028] Figure 11 This is a schematic diagram of the layout of an operating system for wet fracturing sand well sites provided in one embodiment of the present invention.

[0029] Figure label:

[0030] 1-Buffer assembly; 11-Buffer unit; 111-Frame; 112-Hopper frame; 113-Hopper body; 114-Elastic component; 115-Drive unit; 116-Moisture measuring device; 117-Stirring device; 118-Gate; 119-Baffle; 121-Impurity collection device; 2-First conveying device; 21-Base; 22-Conveyor belt; 221-First belt section; 222-Second belt section; 23-Discharge device; 24-Lifting device; 241-Lifting connector; 25-Belt scale; 26-Spiral conveyor channel; 3-Second conveying device; 31-Base; 32-First-stage conveyor belt; 33-Second-stage conveyor belt; 34-Lifting device; 35-Discharge device; 36-Belt scale; 100-Wet fracturing sand conveying device; 200-Transportation device; 300-Sand mixing equipment. Detailed Implementation

[0031] Various embodiments and features of this utility model are described herein with reference to the accompanying drawings.

[0032] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this invention will be apparent to those skilled in the art.

[0033] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, serve to explain the principles of the present invention.

[0034] These and other features of the present invention will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0035] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of the present invention, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0036] The above and other aspects, features and advantages of the present invention will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0037] Specific embodiments of the present invention will now be described with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of the present invention, which may be implemented in various ways. Well-known and / or repeated functions and structures have not been described in detail to avoid unnecessary or redundant details that could obscure the present invention. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely to serve as the basis and representative basis for the claims to teach those skilled in the art to use the present invention in a variety of substantially any suitable detailed structures.

[0038] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this utility model.

[0039] The first embodiment of this utility model provides a wet fracturing sand conveying device, which includes a buffer component and a conveying device. The buffer component includes at least one buffer unit, and the conveying device may be, for example, a belt conveyor or a screw conveyor, or other devices capable of conveying.

[0040] like Figures 1-8As shown, in this embodiment, the wet fracturing sand conveying device includes a buffer assembly 1 and a first conveying device 2. The buffer assembly 1 is a buffer unit 11, which is used to process the externally input wet fracturing sand. The first conveying device 2 is arranged opposite to the outlet of the buffer unit 11. The first conveying device 2 can convey the processed wet fracturing sand to a sand mixing device, such as a sand mixing tank.

[0041] Specifically, when using the wet fracturing sand conveying device described in this embodiment, the wet fracturing sand is conveyed to the buffer unit 11 located in the fracturing well site by means of ton bags, sand trucks or dump trucks. The buffer unit 11 can perform various treatments such as vibration, filtration and stirring on the wet fracturing sand, and can convey the treated wet fracturing sand to the first conveying device 2. Finally, the first conveying device 2 conveys the wet fracturing sand to the sand mixing equipment based on a predetermined conveying speed.

[0042] In this embodiment, the buffer component 1 is set at a first position of the first conveying device 2. The first position can be, for example, the first end of the first conveying device 1 that is far from the sand mixing equipment or close to the first end. The wet fracturing sand falls from the buffer component 1 onto the first conveying device 2 and enters the sand mixing equipment from a second position of the first conveying device 2 through transportation. The second position can be the second end of the first conveying device 2, which is set opposite to the first end.

[0043] Specifically, such as Figure 1 and Figure 2 As shown, in an embodiment where the first conveying device 2 employs a belt conveyor, the first conveying device 2 includes a base 21, on which a conveyor belt 22 is mounted. The conveyor belt 22 is inclined, with its first end facing the discharge port of the buffer unit 11 of the buffer assembly 1. A feeding device 23 is mounted on the second end of the conveyor belt 22, through which wet fracturing sand is conveyed to the sand mixing equipment. The conveyor belt 22 can be a flat belt or a belt with partitions.

[0044] Furthermore, a lifting device 24 is provided at, for example, the middle of the conveyor belt 22. One end of the lifting device 24 is connected to the base 21, and the other end of the lifting device 24 is connected to, for example, the middle of the conveyor belt 22. The lifting device 24 can raise the second end of the conveyor belt 22 to a predetermined height, thereby allowing the conveyor belt 22 to be installed at an angle. Here, the lifting device 24 can raise the second end of the conveyor belt 22 to a fixed height; in some embodiments, this height can also be adjusted.

[0045] Therefore, such as Figure 1 As shown, the lifting device 24 is, for example, a support rod of constant length, or as... Figure 2 As shown, the lifting device 24 can also be a telescopic hydraulic cylinder with a variable length. The telescopic hydraulic cylinder can be manually or automatically controlled, and the height at which the second end of the conveyor belt 22 is lifted can be adjusted. In this embodiment, by changing the inclination angle of the conveyor belt 22 through the lifting device 24, the feeding device 23 can accommodate sand mixing equipment at different heights.

[0046] In other embodiments, a lifting connector may also be included, through which the lifting device 24 is connected to the first conveying device 2. Here, the lifting connector and the first conveying device 2 may be fixedly connected, or the lifting connector and the first conveying device 2 may be slidably connected.

[0047] Furthermore, the first conveying device 2 also includes a weighing component, which is used to weigh the weight or volume of the wet fracturing sand on the conveying device. This component can be, for example, an electronic belt scale, a nuclear belt scale, dual-LiDAR detection, or a binocular vision measurement system. In this embodiment, a belt scale 25 is installed on the conveyor belt 22. The belt scale 25 can weigh the weight or volume of the wet fracturing sand on the conveyor belt 22, so that the buffer unit 11 can control the amount of material discharged.

[0048] Furthermore, such as Figure 3 As shown, when the belt conveyor is used, in order to facilitate the conveying of wet fracturing sand, the conveyor belt 22 here includes a first belt section 221 and a second belt section 222 connected to each other. The first belt section 221 is disposed on the base 21 and, for example, is disposed near the first end of the base 21, and is disposed approximately parallel to the base 21. The second belt section 222 is disposed at an inclination relative to the base 21. The first end of the second belt section 222 is connected to the end of the first belt section 221. The unloading device 23 is disposed at the second end of the second belt section 222. The second end of the second belt section 222 can be tilted by the lifting device 24.

[0049] In this way, the wet fracturing sand discharged from the outlet of the buffer unit 11 can first fall onto the first belt section 221 which is arranged in a near-horizontal manner, which facilitates the feeding of wet fracturing sand. Then, the wet fracturing sand is transported to a higher position through the second belt section 222 and then falls into the sand mixing equipment through the feeding device 23.

[0050] In this embodiment, a belt scale 25 is provided on the first belt section 221 and / or the second belt section 222 of the conveyor belt 22, especially on the second belt section 222. The belt scale 25 can weigh the weight or volume of the wet crushing sand on the second belt section 222 so that the buffer unit 11 can control the amount of material fed.

[0051] In another implementation, such as Figure 4 As shown, in another embodiment where the conveying device is a screw conveyor, the first conveying device 2 includes a base 21, on which a screw conveying channel 26 is provided. The screw conveying channel 26 can be composed of one or more channels. Here, the screw conveying channel 26 is inclined, with its first end facing the discharge port of the buffer unit 11 of the buffer assembly 1. The second end of the screw conveying channel 26 is provided with a feeding device 23, which conveys the wet fracturing sand to the sand mixing equipment.

[0052] Similarly, a lifting device 24 is provided, for example, in the middle of the spiral conveying channel 26. One end of the lifting device 24 is connected to the base 21, and the other end is connected to, for example, the middle of the spiral conveying channel 26. The lifting device 24 can lift the second end of the spiral conveying channel 26 to a predetermined height, allowing the spiral conveying channel 26 to be inclined. The lifting device 24 can lift the second end of the spiral conveying channel 26 to a fixed height or a variable height. In this embodiment, the lifting device 24 can particularly change the inclination angle of the spiral conveying channel 26, enabling the feeding device 23 to accommodate sand mixing equipment of different heights.

[0053] like Figure 8 As shown, the feeding device 23 here is rotatable relative to the first conveying device 2, thereby adjusting the feeding angle of the feeding device 23. Specifically, the feeding device 23 includes a fixed part 231, on which a movable part 232 is rotatably connected. The feeding device 23 also includes a telescopic connecting part 233, which can be, for example, a telescopic rod structure, with one end connected to the first conveying device 2 and the other end connected to the movable part 232. The movement of the telescopic connecting part 233 allows the movable part 232 to rotate relative to the fixed part 231.

[0054] Furthermore, such as Figure 5As shown, in this embodiment, the buffer unit 11 includes a frame 111, on which a hopper assembly is disposed. The hopper assembly is disposed above the frame 111 and includes a hopper frame 112 and a hopper body 113. The hopper frame 112 is disposed on the upper surface of the frame 111, and the hopper body 113 is disposed below the hopper frame 112. The bottom of the hopper body 113 has a discharge port, and a gate 118 is disposed on the inner side of the discharge port. The wet fracturing sand, after vibration and agitation, falls into the first conveying device 2 through the discharge port. The gate 118 can control the opening and closing of the discharge port, and the wet fracturing sand falls into the first conveying device 2 through the hopper assembly.

[0055] The buffer unit 11 of this embodiment is an integrated sand hopper that combines multiple functions such as vibration and stirring. Therefore, an elastic element 114 is provided between the hopper frame 112 and the frame 111 of the hopper assembly. The elastic element 114 can be, for example, a vibration spring. The elastic element 114 causes the hopper assembly to vibrate, thereby achieving vibration of the wet fracturing sand. A drive unit 115 is provided on the hopper frame 112, and the drive unit 115 is connected to the elastic element 114. The drive unit 115 drives the vibration of the elastic element 114. The drive unit 115 can be a motor, a pneumatic hammer, or other device.

[0056] Furthermore, a moisture measuring device 116 is installed inside the hopper body 113 or at the discharge port to measure the moisture content of the wet fracturing sand. Additionally, a stirring device 117 is installed inside the hopper body 113, connected to the drive unit 115, to agitate the vibrated wet fracturing sand.

[0057] This invention enables the wet fracturing sand to undergo various treatments such as vibration and stirring during transportation to prevent the wet fracturing sand from agglomerating due to its low moisture content, thereby improving the effectiveness of subsequent fracturing operations.

[0058] The above embodiments of this utility model can highly integrate the hopper assembly and the conveying device, which can reduce the height of the hopper assembly to facilitate the loading of wet sand, and also shorten the overall length of the wet fracturing sand conveying device to facilitate transportation.

[0059] A second embodiment of this utility model provides a wet fracturing sand conveying device, which includes a buffer assembly and a conveying device. The buffer assembly includes at least one buffer unit, and the conveying device can be, for example, a belt conveyor, a screw conveyor, or other devices capable of conveying. Figures 6-7 As shown, in this embodiment, the wet fracturing sand conveying device includes a buffer assembly 1 and a second conveying device 3. The buffer assembly 1 includes multiple buffer units 11. In this embodiment, there are three buffer units 11. The buffer units 11 are used to process the externally input wet fracturing sand. The second conveying device 3 is arranged opposite to the outlet of the buffer unit 11. The second conveying device 3 can convey the processed wet fracturing sand to the sand mixing equipment, such as a sand mixing tank.

[0060] Specifically, when using the wet fracturing sand conveying device described in this embodiment, the wet fracturing sand is conveyed to the buffer unit 11 located in the fracturing well site by means of ton bags, sand trucks or dump trucks. The buffer unit 11 can perform various treatments on the wet fracturing sand, such as vibration, filtration and stirring, and can convey the treated wet fracturing sand to the second conveying device 3. Finally, the second conveying device 3 conveys the wet fracturing sand to the sand mixing equipment based on a predetermined conveying speed.

[0061] In this embodiment, the buffer assembly 1 is located at a first position of the second conveying device 3, such as the first end of the second conveying device 3 or a position near its first end. Wet fracturing sand is input from the buffer assembly 1 to the first end of the second conveying device 3 and enters the sand mixing equipment from a second position of the second conveying device 3. This second position can be the second end of the second conveying device 3 opposite to the first end. In this embodiment, the second conveying device 3 includes continuous multi-stage conveying units. The buffer assembly 1 is located at the end of the conveying unit away from the sand mixing equipment. Continuous conveying by multiple conveying units enables the discharge of large volumes of material.

[0062] Specifically, for example, in an embodiment where the second conveying device 3 adopts a belt conveyor (similar to a screw conveyor), the second conveying device 3 includes a base 31, on which a first-stage conveyor belt 32 and a second-stage conveyor belt 33 are sequentially arranged, wherein the first-stage conveyor belt 32 and the second-stage conveyor belt 33 are both inclined relative to the base 31.

[0063] In this configuration, the first end of the first-stage conveyor belt 32 is positioned opposite to the first position of the base 31, for example, the first end. The second end of the first-stage conveyor belt 32 is positioned opposite to the first end of the second-stage conveyor belt 33 and is located above the first end of the second-stage conveyor belt 33. Thus, wet fracturing sand falls from the buffer assembly 1 onto the first end of the first-stage conveyor belt 32, and after being conveyed by the first-stage conveyor belt 32, falls from the second end of the first-stage conveyor belt 32 onto the first end of the second-stage conveyor belt 33. The second end of the second-stage conveyor belt 33 is positioned higher than the base 31, and particularly higher than the height of the second end of the first-stage conveyor belt 32.

[0064] Furthermore, a feeding device 35 is provided at the second end of the second-stage conveyor belt 33, through which the wet fracturing sand on the second-stage conveyor belt 33 falls into the sand mixing equipment.

[0065] In this embodiment, the first-stage conveyor belt 32 is tilted, for example, by means of a bracket, and the tilt angle of the second-stage conveyor belt 33 is adjustable. Specifically, a lifting device 34 is provided at the middle of the second-stage conveyor belt 33, for example. One end of the lifting device 34 is connected to the base 31, and the other end of the lifting device 34 is connected to the middle of the second-stage conveyor belt 33. The action of the lifting device 34 can lift the second end of the second-stage conveyor belt 33 to a predetermined height. The lifting device 34 can lift the second end of the second-stage conveyor belt 33 to a fixed height or a variable height, thereby making the second-stage conveyor belt 33 tilted and the tilt angle adjustable. The lifting device 34 is, for example, a support rod of constant length to achieve lifting to a fixed height. Of course, the lifting device 34 can also be a telescopic cylinder with adjustable length. The telescopic cylinder can be manually or automatically controlled, and the lifting height of the conveyor belt 22 can be adjusted by the telescopic cylinder. In this embodiment, the lifting device 34 changes the inclination angle of the second-stage conveyor belt 33, so that the feeding device 35 can accommodate sand mixing equipment of different heights.

[0066] Furthermore, the second conveying device 3 also includes a weighing component for weighing the weight or volume of the wet fracturing sand on the conveyor belt. This component can be, for example, an electronic belt scale, a nuclear belt scale, a dual-LiDAR detection system, or a binocular vision measurement system. In this embodiment, a belt scale 36 is installed on the first-stage conveyor belt 32 and / or the second-stage conveyor belt 33, allowing the weighing of the wet fracturing sand on these belts to be measured. Preferably, for more accurate and precise measurement, the belt scale 36 is installed on the second-stage conveyor belt 33.

[0067] Specifically, in the embodiment where the second conveying device 3 adopts a screw conveyor, the second conveying device 3 includes a base 31, on which a first-stage screw conveying channel and a second-stage screw conveying channel are sequentially arranged. Both the first-stage and second-stage screw conveying channels are inclined relative to the base 31. The lifting device 34 is the same as in the above embodiment. Furthermore, similarly, a discharge device 35 is provided at the second end of the second-stage screw conveying channel, through which the wet fracturing sand on the second-stage screw conveying channel falls into the sand mixing equipment.

[0068] The feeding device 35 in this embodiment can refer to the structure of the feeding device in the above embodiment, so that the feeding device 35 can rotate relative to the second conveying device 3, thereby adjusting the feeding angle of the feeding device 35.

[0069] In this embodiment, the buffer assembly 1 includes three buffer units 11 arranged side by side. These buffer units 11 are sequentially arranged side-by-side along the extension direction of the first-stage conveyor unit. The multiple buffer units 11 increase the amount of wet fracturing sand that falls onto the buffer unit. The outlets of the three buffer assemblies 11 are all directly opposite the first-stage conveyor belt 32. Therefore, the length of the first-stage conveyor belt 32 is matched to the length of the buffer assembly 1, ensuring that the wet fracturing sand in each buffer unit 11 falls onto the first-stage conveyor belt 32. Furthermore, the inclination angle of the first-stage conveyor belt 32 is relatively small to facilitate the falling material from the buffer units 11.

[0070] The structure of the buffer unit 11 in this embodiment is the same as that of the buffer unit in the first embodiment described above. It is an integrated sand tank that integrates multiple functions such as vibration, filtration, and stirring. Specifically, the buffer unit 11 includes a frame 111, on which a hopper assembly is provided. The hopper assembly is located above the frame 111 and includes a hopper frame 112 and a hopper body 113. The hopper frame 112 is located on the upper surface of the frame 111, and the hopper body 113 is located below the hopper frame 112. The bottom of the hopper body 113 has a discharge port, and a gate 118 is provided on the inner side of the discharge port. The wet fracturing sand, after vibration and stirring, falls through the discharge port onto the first-stage conveyor belt 32. The gate 118 can control the opening and closing of the discharge port, and the wet fracturing sand falls through the hopper assembly onto the first-stage belt conveyor 32.

[0071] The buffer unit 11 of this embodiment is an integrated sand hopper that combines multiple functions such as vibration, filtration, and stirring. Therefore, an elastic element 114 is provided between the hopper frame 112 and the frame 111 of the hopper assembly. The elastic element 114 can be, for example, a vibration spring. The elastic element 114 causes the hopper assembly to vibrate, thereby achieving vibration of the wet fracturing sand. A drive unit 115 is provided on the hopper frame 112, and the drive unit 115 is connected to the elastic element 114, driving the vibration of the elastic element 114.

[0072] Compared to the buffer unit in the first embodiment, the buffer unit 11 in this embodiment has a filter device installed inside the hopper assembly to filter the wet fracturing sand input into the hopper assembly. Furthermore, the buffer unit 11 can also be equipped with an impurity collection device 121. This allows the wet fracturing sand, transported by a sand truck or loader to the top of the buffer assembly 11 and into its interior, to be vibrated to accelerate its flow and pass more smoothly through the filter device. Larger impurities are filtered out during the filtration process, and the impurity collection device 121 facilitates the collection of these impurities.

[0073] Furthermore, a moisture measuring device 116 is provided on the inner side of the hopper body 113, which measures the moisture content in the wet fracturing sand. In addition, a stirring device 117 is provided on the inner side of the hopper body 113, which is connected to the drive unit 115 and is used to stir the vibrated wet fracturing sand.

[0074] Furthermore, a baffle 119 is provided above the hopper assembly. This baffle 119 is detachably mounted above the hopper frame 112. The baffle 119 allows for sand loading from both sides; for example, if sand is loaded from one side, the baffle 119 is positioned on the opposite side. In another embodiment, the baffle 119 has a three-sided enclosure structure, leaving one side open for sand loading. In this embodiment, by providing the baffle 119, a larger volume of wet sand can be accommodated, and wet sand can be prevented from falling onto the outside.

[0075] Thus, after being filtered by the filtration device, the wet fracturing sand is stirred by the mixing device, passes through the gate, and falls onto the first-stage conveyor belt 32. Then, it is conveyed by the first-stage conveyor belt 32 and falls onto the second-stage conveyor belt 33, finally falling into the sand mixing equipment through the feeding device 35. Of course, the buffer unit in this embodiment can also be used in the device of the first embodiment.

[0076] This embodiment of the invention can perform various treatments on wet fracturing sand during transportation, such as vibration, filtration, and agitation, to prevent the wet fracturing sand from agglomerating due to its low moisture content, thereby improving the effectiveness of subsequent fracturing operations. Of course, the buffer unit described in this embodiment can also be used in the device of the first embodiment.

[0077] Compared to the above embodiments, this embodiment uses a multi-stage conveying unit, which makes the sand loading position lower and the amount of sand loaded larger, making it suitable for sand loading operations in different ways such as sand trucks, dump trucks, forklifts, loaders, and cranes with ton bags.

[0078] The third embodiment of this utility model provides a buffer unit for a wet fracturing sand conveying device, which can be any of the structural forms of the buffer unit described in the first and second embodiments above. The specific structure of the buffer unit will not be described in detail here.

[0079] The fourth embodiment of this utility model provides an operating system for wet fracturing sand well sites, which includes a wet fracturing sand conveying device, a transport device, and a sand mixing device. The wet fracturing sand conveying device mentioned here is the wet fracturing sand conveying device of any one of the embodiments of the first and second embodiments described above.

[0080] This embodiment is mainly used in wet fracturing sand well sites. After being processed at the production site, the wet fracturing sand is transported to or near the well site by a first transport device for stockpiling and storage. Since the well site is an open-air sand plant, an appropriate spraying device can be used to maintain the moisture content of the wet fracturing sand, avoiding dust pollution caused by the use of other equipment. Then, the wet fracturing sand is transported to the buffer component of the wet fracturing sand conveying device by a second transport device, and then conveyed to the sand mixing equipment by a belt conveyor for the preparation of fracturing fluid. The first transport device can be a sand truck or a dump truck, the second transport device can be a sand truck, a dump truck, or a loader, and the sand mixing equipment can be the sand mixing tank of the sand mixing truck.

[0081] In one implementation, such as Figures 9-10 As shown, the operating system for wet fracturing sand well sites includes a wet fracturing sand conveying device 100, a transport device 200, and a sand mixing device 300. The wet fracturing sand conveying device 100, for example, adopts the structure of the first embodiment. In this embodiment, the wet fracturing sand conveying device 100 can, for example, convey wet fracturing sand transported by multiple transport devices 200 to the sand mixing device 300.

[0082] To save space and facilitate material unloading, multiple transport devices 200 are arranged side-by-side in a direction perpendicular to the extension direction of the belt conveyor. Considering that the buffer unit 11 in the wet fracturing sand transport device 100 is used to receive the wet fracturing sand transported by the transport devices 200, the size of the hopper assembly of the buffer unit 11 in the direction perpendicular to the belt conveyor 2 can be increased to simultaneously receive wet fracturing sand transported by multiple transport devices 200. The widened hopper assembly allows for simultaneous sand loading at multiple stations, and the angle of each transport device 200 can be adjusted according to the limitations of the work site, reducing the adverse effects of limited space at the fracturing well site. Furthermore, since the material unloading position of the buffer unit 11 in the first and second embodiments is relatively high, the height of the transport devices 200 can be raised to improve the feeding efficiency.

[0083] In another implementation, such as Figure 11 As shown, the operating system for wet fracturing sand well sites includes a wet fracturing sand conveying device 100, a transport device 200, and a sand mixing device 300. The wet fracturing sand conveying device 100 here adopts, for example, the structure of the second embodiment described above. In this embodiment, the wet fracturing sand conveying device 100 can, for example, transport the wet fracturing sand transported by multiple transport devices 200.

[0084] To save space and facilitate material unloading, multiple conveying devices 200 are arranged side-by-side along the extension direction of the belt conveyor. The buffer unit 11 in the wet fracturing sand conveying device 100 is used to receive the wet fracturing sand transported by the conveying device 200. For example, the number of buffer units 11 can be matched with the number of conveying devices 200, while extending the length of the first-stage conveyor belt, so that multiple conveying devices 200 can correspondingly unload the wet fracturing sand into the corresponding buffer unit 11.

[0085] This utility model embodiment can simultaneously realize the unloading of wet fracturing sand transported by at least one transport device, improving the unloading efficiency. Furthermore, during the transport of wet fracturing sand, it undergoes various treatments such as vibration and stirring to prevent the wet fracturing sand from agglomerating due to its low moisture content, thereby improving the effect of subsequent fracturing operations.

[0086] Furthermore, the features of the embodiments shown in the accompanying drawings or the various embodiments mentioned in this specification should not be construed as independent embodiments. Rather, each feature described in one example of an embodiment can be combined with one or more other desired features from other embodiments to produce other embodiments not described in words or with reference to the accompanying drawings.

[0087] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A working system for a wet frac sand well site, characterized by, The device includes a wet fracturing sand conveying device, a transport device, and a sand mixing device. The wet fracturing sand conveying device includes at least a buffer component and a conveying device. The wet fracturing sand conveying device receives at least one wet fracturing sand transported by the transport device through the buffer component and conveys it to the sand mixing device through the conveying device.

2. The working system for a wet frac sand well site of claim 1, wherein, The transport device comprises multiple units, which are arranged side by side in a direction perpendicular to the extension direction of the transport device.

3. The working system for a wet frac sand well site of claim 2, wherein, The buffer assembly includes a buffer unit, the conveying device includes a base, the conveying unit and the lifting device are arranged on the base, the conveying unit is inclined, its first end corresponds to the discharge port of the buffer unit, the second end of the conveying unit is provided with a feeding device, one end of the lifting device is connected to the base, and the other end of the lifting device is connected to the conveyor belt to adjust the inclination angle of the conveying unit.

4. The working system for a wet frac sand well site of claim 3, wherein, The conveying device also includes a weighing component for weighing wet fracturing sand.

5. The working system for a wet frac sand well site of claim 1, wherein, Multiple of the transport devices are arranged side by side along the extension direction of the conveying device.

6. The working system for a wet frac sand well site of claim 5, wherein, The buffer assembly includes multiple buffer units, and the conveying device includes a base. A first-stage conveying unit and a second-stage conveying unit are sequentially arranged on the base. Both the first-stage conveying unit and the second-stage conveying unit are inclined relative to the base. A feeding device is arranged on the second-stage conveying unit.

7. The working system for a wet frac sand well site of claim 6, wherein, Multiple buffer units are arranged side by side along the extension direction of the first-stage conveying unit.

8. The working system for a wet frac sand well site of claim 6, wherein, A lifting device is provided on the base, one end of which is connected to the base and the other end of which is connected to the second-stage conveying unit.

9. The working system for a wet frac sand well site of claims 3 or 6, wherein, The buffer unit has at least one function of vibration, filtration and stirring.

10. The working system for a wet frac-sand well site of claim 1, wherein, The transport device is at least one of a sand truck, a dump truck, or a loader.

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