Inorganic proppant soaking and reinforcing device

Abstract

The utility model provides an inorganic proppant soaking reinforcing device, and belongs to the technical field of oil exploitation. The device comprises a tank body, a buffer tank and a liquid distribution assembly. And a support plate is arranged at the top of the opening of the tank body. A liquid inlet and a pressure balance pipe are arranged at the top of the buffer tank; and a liquid discharge pipe is arranged at the bottom of the buffer tank. The liquid distribution assembly is located in the tank body, and the top of the liquid distribution assembly is detachably connected with the lower end of the liquid discharge pipe. The liquid distribution component is released from the inside of the accumulated quartz sand raw material, so that the contact soaking process of a repairing agent solution, acid liquor or alkali liquor and the quartz sand raw material can be accelerated, the soaking repairing and reinforcing effect is ensured, an auxiliary stirring mode is not needed, the quartz sand raw material crack expansion caused by strong stirring can be avoided, and the service life of the quartz sand raw material is prolonged. The consumption of the repairing agent solution, the acid liquor or the alkali liquor is increased.

Description

Technical Field

[0001] This utility model relates to the field of petroleum extraction technology, and in particular to an inorganic proppant soaking and reinforcing device. Background Technology

[0002] Chinese utility model patent (title: "An Improved Method for Reducing the Fragmentation Rate of Quartz Sand Proppant for Oil Fracturing and Quartz Sand Proppant", announcement number: CN115784771B, announcement date: 20240920) discloses a method of adding quartz sand to a repair agent solution; allowing it to stand in an acidic or alkaline environment; and then drying it to complete the strengthening and modification of the quartz sand. This method utilizes the capillary action of the fractures within the quartz sand particles to draw the repair agent into these fractures, thereby repairing the fractures and improving the strength of the quartz sand.

[0003] In laboratory settings, the above-mentioned preparation process demonstrates a relatively stable immersion reinforcement effect due to the small amount of quartz sand used. However, in industrial-scale production, the dense packing of the quartz sand hinders the rapid contact between the repair agent solution, acid, or alkali solution and the bottom layer of quartz sand. Furthermore, if stirring is employed, a high-power motor is required due to the high specific gravity of quartz sand. Utility Model Content

[0004] This invention aims to provide an inorganic proppant soaking and reinforcing device. By releasing the liquid from the inside of the accumulated quartz sand raw material through the liquid distribution component, the contact soaking process of the repair agent solution, acid solution or alkali solution with the quartz sand raw material can be accelerated, ensuring the soaking repair and reinforcing effect. Moreover, no auxiliary stirring method is required, which can also avoid the expansion of cracks in the quartz sand raw material under strong stirring, and the increase in the consumption of repair agent solution, acid solution or alkali solution.

[0005] The technical solution adopted in this utility model is:

[0006] An inorganic proppant impregnation reinforcement device, comprising:

[0007] The tank body has a support plate at its open top; the support plate has roughly symmetrical fan-shaped sides and roughly circular shape in the middle, with a working window inside the circular part; a discharge port is provided on the outer side of the lowest point of the tank body; and a first electric switch valve is provided on the discharge port.

[0008] A buffer tank is located above the support plate and is generally enclosed. The top of the buffer tank is provided with an inlet and a pressure balancing pipe. A second electric switch valve is provided on the inlet. The free end of the pressure balancing pipe is bent and faces the bottom of the tank body. A drain pipe is provided at the bottom of the buffer tank. The drain pipe passes through the working window and its lower end extends into the tank body.

[0009] A liquid distribution assembly is located inside the tank, and its height is 1 / 2 to 2 / 3 of the internal depth of the tank. There is a gap of 5 to 50 cm between the liquid distribution assembly and the adjacent side wall and bottom of the tank. The top of the liquid distribution assembly is connected to the lower end of the drain pipe.

[0010] Furthermore, a liquid level sensor is installed inside the buffer tank.

[0011] Furthermore, the liquid distribution assembly includes one or more circular liquid distribution components; when there are two or more circular liquid distribution components, the circular liquid distribution components are connected in series.

[0012] Furthermore, the circular liquid distribution component includes:

[0013] A connecting pipe, wherein both ends of the connecting pipe are connected;

[0014] A plurality of linear liquid distribution tubes are evenly arranged in a circular manner on the outer circumference of the connecting main tube; one end of each linear liquid distribution tube is connected to the connecting main tube and the other end is closed; a plurality of first liquid distribution holes are provided on the lower surface of each linear liquid distribution tube.

[0015] A plurality of circular liquid distribution tubes are arranged in concentric circles with the center of the connecting main tube as the geometric center, and intersect with the linear liquid distribution tubes, and the two are internally connected; a plurality of second liquid distribution holes are opened on the lower surface of the circular liquid distribution tubes.

[0016] The lower end of the connecting main pipe of the circular liquid distribution component located at the bottom is closed; when there are two or more circular liquid distribution components, the adjacent connecting main pipes are detachably connected.

[0017] Furthermore, the cross-sections of the linear liquid distribution pipe and the circular liquid distribution pipe are semi-circular fan-shaped or pointed, and each has a groove-shaped recessed area; the groove opening of the groove-shaped recessed area faces the bottom of the tank, and the first liquid distribution hole and the second liquid distribution hole are located at the bottom of the groove-shaped recessed area.

[0018] Furthermore, when there are two or more circular liquid distribution components, the linear liquid distribution tubes and the circular liquid distribution tubes of two adjacent circular liquid distribution components are arranged in an alternating manner.

[0019] Furthermore, from bottom to top, the number and / or area of ​​the first and second liquid distribution holes on the circular liquid distribution component gradually decrease.

[0020] Furthermore, a circulation pump is provided on the fan-shaped portion of one side of the support plate; the inlet pipe end of the circulation pump extends into the tank body and is equipped with a filter; the outlet pipe end of the circulation pump is connected to the circulation interface provided on the top of the buffer tank through a flexible pipe.

[0021] Furthermore, the diameter of the working window is larger than the diameter of the drain pipe; symmetrical limit seats are provided on the fan-shaped portions on both sides of the support plate, and guide grooves are correspondingly opened on their top surfaces; guide ears are provided on the opposite side walls of the buffer tank, which are respectively inserted into the corresponding guide grooves; there is a gap between the lower part of the guide ear and the bottom of the guide groove; rollers are provided on opposite sides of the bottom of the buffer tank, and the rollers are in rolling contact with the support plate; a hydraulic cylinder is also provided on the fan-shaped portion of the support plate, and the free end of the piston rod of the hydraulic cylinder is connected to the guide ear pin on the side adjacent to the hydraulic cylinder.

[0022] The beneficial effects of this utility model are:

[0023] Compared to the traditional method of soaking repair agents, acids, or alkalis from the top of the piled quartz sand raw material downwards, this invention provides an inorganic proppant soaking and reinforcing device. By releasing the solution from inside the piled quartz sand raw material through a distribution component, the contact soaking process of the repair agent solution, acid, or alkali with the quartz sand raw material can be accelerated, ensuring the soaking repair and reinforcing effect. Moreover, no auxiliary stirring is required, which can also avoid the expansion of cracks in the quartz sand raw material and the increase in the consumption of repair agent solution, acid, or alkali under strong stirring. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application 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 of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front view of the inorganic proppant soaking and reinforcing device in the embodiment.

[0027] Figure 2 This is a top view of the inorganic proppant soaking and reinforcing device in the embodiment.

[0028] Figure 3 This is a three-dimensional structural diagram of the inorganic proppant soaking and reinforcing device in the embodiment. Figure 1 The sidewalls of the tank are not shown.

[0029] Figure 4This is a three-dimensional structural diagram of the inorganic proppant soaking and reinforcing device in the embodiment. Figure 2 .

[0030] Figure 5 This is a three-dimensional structural diagram of the combined structure of the buffer tank and the liquid distribution assembly in the embodiment.

[0031] Figure 6 This is a front view of the circular liquid distribution component in this embodiment.

[0032] Figure 7 This is a top view of the circular liquid distribution component in this embodiment.

[0033] Figure 8 This is a bottom view of the circular liquid distribution component in this embodiment. Attached Figure Description

[0034] 100 - Tank body, 200 - Buffer tank, 300 - Liquid distribution assembly, 400 - Circulation assembly, 500 - Hydraulic cylinder.

[0035] 110-Support plate, 111-Working window, 120-Discharge port, 130-Limit seat, 131-Guide groove.

[0036] 210-Inlet, 220-Pressure balance tube, 230-Drain tube, 240-Circulation interface, 250-Guide ear plate, 260-Roller.

[0037] 310 - Circular liquid distribution component, 311 - Connecting main pipe, 312 - Linear liquid distribution pipe, 313 - First liquid distribution hole, 314 - Circular liquid distribution pipe, 315 - Second liquid distribution hole, 316 - Groove-shaped recessed area, 317 - Circular baffle.

[0038] 410 - Circulation pump.

[0039] 510 - Piston rod, 520 - Pin. Detailed Implementation

[0040] 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.

[0041] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0042] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0043] Figure 1 This is a front view of the inorganic proppant soaking and reinforcing device in the embodiment. Figure 2 This is a top view of the inorganic proppant soaking and reinforcing device in the embodiment. Figure 3 This is a three-dimensional structural diagram of the inorganic proppant soaking and reinforcing device in the embodiment. Figure 1 The sidewalls of the tank are not shown. Figure 4 This is a three-dimensional structural diagram of the inorganic proppant soaking and reinforcing device in the embodiment. Figure 2 .like Figures 1-4 As shown, the inorganic proppant immersion reinforcement device includes a tank 100. The internal space of the tank 100 is the main area where the quartz sand proppant and repair agent solution, as well as the quartz sand particles, come into contact with each other, thereby repairing and reinforcing the cracks. A support plate 110 is detachably mounted on the open top of the tank 100. The two sides of the support plate 110 are roughly symmetrical fan-shaped, and the edges of the fan-shaped portions can be connected to the open top of the tank 100 via bolts and nuts (not shown in the figure). The middle of the support plate 110 is roughly annular, with the annular portion and the fan-shaped portion integrally formed, and the inner side of the annular portion is a working window 111. A discharge port 120 is provided on the outer side of the lowest point of the tank 100, and a first electric switch valve (not shown in the figure) is installed on the discharge port 120. The opening and closing of the first electric switch valve is controlled by a controller. In this embodiment, after the quartz sand raw material is put into the tank 100, a repair agent solution, acid or alkali solution is added, and the mixture is left to soak and stand to achieve crack repair and reinforcement. Finally, it can be discharged through the discharge port 120.

[0044] Figure 5 This is a three-dimensional structural diagram of the combined structure of the buffer tank and the liquid distribution assembly in the embodiment. Figures 1-5As shown, the inorganic proppant soaking reinforcement device also includes a generally closed cylindrical buffer tank 200, which is used to buffer the repair agent solution, acid, or alkali solution. The buffer tank 200 is located above the support plate 110. The top of the buffer tank 200 is provided with an inlet 210 and a pressure balancing pipe 220. The inlet 210 is connected to the repair agent solution storage tank, acid storage tank, or alkali storage tank via a flexible pipe (such as a plastic hose or metal hose). A second electric switch valve (not shown in the figure) is provided on the inlet 210, and the opening and closing of the second electric switch valve is implemented by a controller. The free end of the pressure balancing pipe 220 is bent towards the inner bottom of the tank body 100, and the free end of the pressure balancing pipe 220 is located below the open top surface of the tank body 100. A drain pipe 230 is provided at the bottom of the buffer tank 200; the drain pipe 230 passes through the working window 111, and its lower end extends into the tank body 100. In this embodiment, the repair agent solution, acid solution, or alkali solution stored in the repair agent solution storage tank, acid solution storage tank, or alkali solution storage tank respectively can enter the buffer tank 200 through the inlet 210 via a flexible pipe, and then enter the tank body 100 through the drain pipe 230 under gravity. The pressure balancing pipe 220 balances the pressure in the buffer tank 200 and can also guide the continuously input repair agent solution, acid solution, or alkali solution into the tank body 100 after the buffer tank 200 is full, thus preventing excessive pressure in the buffer tank 200. Moreover, the buffer tank 200 has a certain height relative to the bottom surface of the tank body 100, which can create a pressure difference. At the same time, a liquid level sensor (not shown in the figure) is installed inside the buffer tank 200. When the liquid level sensor detects that the liquid level in the buffer tank 200 reaches the upper limit, the controller controls the second electric switch valve to close; when the liquid level sensor detects that the liquid level in the buffer tank 200 reaches the lower limit, the controller controls the second electric switch valve to open.

[0045] like Figures 1-4As shown, the inorganic proppant immersion reinforcement device also includes a liquid distribution assembly 300; the height of the liquid distribution assembly 300 is 1 / 2 to 2 / 3 of the internal depth of the tank 100, the liquid distribution assembly 300 is located inside the tank 100, and has a gap of 5 to 50 cm between it and the side wall and bottom of the adjacent tank 100; the top of the liquid distribution assembly 300 is connected to the lower end of the drain pipe 230; when the quartz sand raw material is loaded into the tank 100, it can at least submerge the lower part of the liquid distribution assembly 300, or when the full load is applied, the quartz sand raw material can completely submerge the liquid distribution assembly 300, and the repair agent solution released from the buffer tank 200... Acid or alkali solution is released from the liquid distribution component 300, that is, from inside the piled quartz sand raw material. The release position covers the lower, middle and upper parts of the piled quartz sand raw material from bottom to top. Compared with the method of the repair agent solution, acid or alkali solution migrating and soaking from the top of the piled quartz sand raw material, the liquid distribution component can accelerate the contact and soaking process between the repair agent solution, acid or alkali solution and the quartz sand raw material, ensuring the soaking repair and reinforcement effect. Moreover, there is no need to use auxiliary stirring, which can also avoid the expansion of cracks in the quartz sand raw material under strong stirring, and increase the consumption of repair agent solution, acid or alkali solution.

[0046] Specifically, the liquid distribution assembly 300 includes circular liquid distribution components 310 connected in series, and the multiple circular liquid distribution components 310 are detachably connected, such as by threaded connections, flange connections, etc. Figure 5 The CCP has shown a 310 with nine circular liquid distribution components. Figure 6 This is a front view of the circular liquid distribution component in this embodiment. Figure 7 This is a top view of the circular liquid distribution component in this embodiment. Figure 8 This is a bottom view of the circular liquid distribution component in this embodiment. Figures 6-8As shown, the circular liquid distribution component 310 has a connecting main pipe 311 that extends through both ends. A plurality of linear liquid distribution tubes 312 are evenly arranged circumferentially on the outer circumferential wall of the connecting main pipe 311; one end of each linear liquid distribution tube 311 is connected to the connecting main pipe 311, and the other end is closed; a plurality of circular first liquid distribution holes 313 are formed on the lower surface of the linear liquid distribution tube 311 (i.e., the side facing the bottom of the tank 100). A plurality of concentric circular liquid distribution tubes 314 are arranged on the outer side of the connecting main pipe 311 with the center of the connecting main pipe 311 as the geometric center; the circular liquid distribution tubes 314 intersect with the linear liquid distribution tubes 311, and the two are internally connected; a plurality of arc-shaped second liquid distribution holes 315 are formed on the lower surface of the circular liquid distribution tubes 314 (i.e., the side facing the bottom of the tank 100). When multiple circular liquid distribution components 310 are combined along the height of the tank 100, adjacent connecting main pipes 311 are connected in series by means of threaded connection or flange connection; the upper end of the connecting main pipe 311 of the uppermost circular liquid distribution component 310 is connected to the drain pipe 230 by means of threaded connection or flange connection, and the lower end of the connecting main pipe 311 of the lowermost circular liquid distribution component 310 is sealed with a plug; the gap between the free end of the linear liquid distribution pipe 311 and the inner wall of the tank 100 is 5~50cm, the gap between the linear liquid distribution pipe 311 of the lowermost circular liquid distribution component 310 and the bottom wall of the tank 100 is 5~50cm, and the lower end of the connecting main pipe 311 does not touch the bottom wall of the tank 100; thus, the circular liquid distribution component 310 composed of multiple circular liquid distribution components 310 is suspended in the lower part of the tank 100. The repair agent solution, acid solution or alkali solution released from the buffer tank 200 is uniformly released from the first distribution hole 313 of the linear distribution pipe 312 and the second distribution hole 315 of the circular distribution pipe 314 of the circular distribution component 310 at different heights under the action of pressure difference. They come into contact with the quartz sand raw material at different heights inside the accumulated quartz sand raw material, and soak, repair and reinforce it.

[0047] Furthermore, in this embodiment, to facilitate the uniform release of the repair agent solution, acid, or alkali solution from the first distribution hole 313 of the linear distribution tube 312 and the second distribution hole 315 of the circular distribution tube 314, preventing clogging and simultaneously forming a distribution void, the cross-sections of the linear distribution tube 312 and the circular distribution tube 314 are semi-circular fan-shaped or pointed, that is, the linear distribution tube 312 and the circular distribution tube 314 each have a groove-shaped recessed area 316, such as... Figure 4As shown in the diagram, the opening of the trough-shaped recessed area 316 faces the bottom of the tank 100, and the first liquid distribution hole 313 and the second liquid distribution hole 315 are located at the bottom of the trough-shaped recessed area 316. Simultaneously, a circular baffle 317 is installed at the free end of the linear liquid distribution pipe 312 to prevent the long end of the quartz sand raw material trough from entering the trough-shaped recessed area 316. When the quartz sand raw material naturally accumulates inside the tank 100, the sidewall of the trough-shaped recessed area 316 blocks it, preventing quartz sand raw material from accumulating near the bottom of the trough-shaped recessed area 316, thus forming a liquid distribution void. This increases the contact area between the repair agent solution, acid solution, or alkali solution and the quartz sand raw material, and also makes it less likely for quartz sand particles to block the first liquid distribution hole 313 and the second liquid distribution hole 315.

[0048] Furthermore, in this embodiment, to ensure that the release points of the repair agent solution, acid, or alkali solution are more widely covered within the accumulated quartz sand raw material, the linear distribution pipes 312 and circular distribution pipes 314 of two adjacent circular distribution components 310 are arranged in an alternating manner. Additionally, from bottom to top, the number and / or area of ​​the first distribution hole 313 and the second distribution hole 315 on the circular distribution component 310 gradually decrease.

[0049] like Figures 1-4 As shown, the inorganic proppant soaking reinforcement device also includes a circulation assembly 400. The circulation assembly 400 has a circulation pump 410, which is mounted on a fan-shaped portion of one side of the support plate 100. The inlet pipe end of the circulation pump 410 extends into the tank 100, is submerged below the liquid surface of the repair agent solution, acid solution, or alkali solution, and is equipped with a filter (not shown in the figure) carrying filter media such as filter screen and filter sponge. The outlet pipe end of the circulation pump 410 is connected to the circulation interface 240 provided on the top of the buffer tank 200 via a flexible tube (such as a plastic hose, metal hose, etc.). During the later stages of soaking, the repair agent solution storage tank, acid storage tank, or alkali storage tank no longer replenishes the tank 100 with new repair agent solution, acid, or alkali. Instead, the upper layer of repair agent solution, acid, or alkali in the tank 100 is pumped into the buffer tank 200 by the circulation pump 410, and then replenished to the lower part of the quartz sand raw material by the liquid distribution assembly 300 for internal circulation, thereby improving the uniformity of the concentration of the repair agent solution, acid, or alkali in the tank 100. Simultaneously, in this embodiment, when the level sensor detects that the liquid level in the buffer tank 200 has reached the upper limit, the controller shuts off the circulation pump 410; conversely, when the level sensor detects that the liquid level in the buffer tank 200 has reached the lower limit, the controller turns on the circulation pump 410.

[0050] like Figures 1-4As shown, limit seats 130 are symmetrically arranged on the fan-shaped portions on both sides of the support plate 100. The distance between the two limit seats 130 is greater than the diameter of the buffer tank 200, and the diameter of the working window 111 is greater than the diameter of the drain pipe 230. Two guide grooves 131 are correspondingly opened on the top surfaces of the two limit seats 130. A hydraulic cylinder 500 is also provided on the fan-shaped portion on the other side of the support plate 100. The piston rod 510 of the hydraulic cylinder 500 is approximately in the direction of the diameter of the buffer tank 200. Two guide ears 250 are respectively provided on the opposite side walls of the buffer tank 200 in the diameter direction. The lower part of the guide ears 250 is respectively inserted into the corresponding guide grooves 131, and there is a gap between the lower part of the guide ears 250 and the bottom of the guide grooves 131. The free end of the piston rod 510 of the hydraulic cylinder 500 is connected to the guide ear 250 on the side adjacent to the hydraulic cylinder 500 by a pin. For example, the free end of the piston rod 510 extends between the two guide ears 250 and is provided with a pin 520. The diameter of the hole on the guide ear 250 through which the pin 520 passes is larger than the diameter of the pin 520. At the same time, the piston rod 510 does not contact the limiting seat 130. Rollers 260 are provided on opposite sides of the bottom of the buffer tank 200 in the radial direction. The rollers 260 are in rolling contact with the support plate 110. In this embodiment, when the controller detects that the rate of drop in the liquid level in the buffer tank 200 is significantly lower than the preset threshold, i.e., when the release of the repair agent solution, acid, or alkali solution at the first liquid distribution hole 313 and the second liquid distribution hole 315 is not smooth, the hydraulic cylinder 500 is activated to repeatedly push the buffer tank 500 to move back and forth quickly (e.g., 10 times / min) with a small amplitude (e.g., the piston rod stroke is 1~5cm). This causes the suspended liquid distribution component 300 to shake in place, e.g., the liquid distribution component 300 slightly tilts up and flattens, thereby changing the local accumulation structure of the quartz sand raw material and clearing the blockage.

[0051] When implementing the inorganic proppant immersion reinforcement method using the aforementioned inorganic proppant immersion reinforcement device, two inorganic proppant immersion reinforcement devices are designed. One inorganic proppant immersion reinforcement device first immerses the quartz sand in the repair solution, and then the other inorganic proppant immersion reinforcement device immerses the quartz sand originally immersed in the repair solution in acid or alkali solution. The specific process includes the following:

[0052] Step S1: Quartz sand raw material is loaded into the tank 100 of an inorganic proppant soaking and reinforcing device, and the liquid distribution assembly 300 is submerged.

[0053] Step S2: The repair agent solution is introduced into the buffer tank 200 from the repair agent solution storage tank, and the repair agent solution is released directly from the piled quartz sand raw material by the liquid distribution assembly 300.

[0054] Step S3: When the liquid level of the repair agent solution in tank 100 is higher than the uppermost surface of the quartz sand raw material to a preset height, the repair agent solution storage tank stops inputting the repair agent solution into the buffer tank 200. The circulation component 400 extracts the repair agent solution from the upper layer of tank 100 and inputs it into the buffer tank 200. The liquid distribution component 300 directly releases the repair agent solution from the accumulated quartz sand raw material to perform internal circulation.

[0055] Step S4: After soaking in the repair agent solution for a preset time, stop the internal circulation and release the remaining repair agent solution and quartz sand raw material;

[0056] Step S5: The separated quartz sand raw material is put into the tank 100 of another inorganic proppant soaking and reinforcing device, and soaked in acid or alkali solution as in steps S2 to S3.

[0057] Step S6: After soaking in acid or alkali solution for a preset time, stop the internal circulation, and release the residual acid or alkali solution and the quartz sand raw material. Wash with water and dry to obtain the finished quartz sand proppant.

[0058] In this embodiment, the liquid distribution component releases the liquid from inside the accumulated quartz sand raw material, which can accelerate the contact and immersion process between the repair agent solution, acid solution or alkali solution and the quartz sand raw material, ensuring the immersion repair and reinforcement effect. Moreover, there is no need to use auxiliary stirring, which can also avoid the expansion of cracks in the quartz sand raw material under strong stirring, and increase the consumption of repair agent solution, acid solution or alkali solution.

Claims

1. An inorganic proppant immersion reinforcement device, characterized by, The application relates to a liquid distribution device for a tank, which comprises the following parts: a tank body, the open top of the tank body is provided with a support plate; the two sides of the support plate are substantially symmetrical fan-shaped, the middle part is substantially ring-shaped, the inner side of the ring-shaped part is a working window; the bottom of the tank body is provided with a discharge port on the outer side of the lowest part; the discharge port is provided with a first electrically-operated on-off valve; a buffer tank, the buffer tank is located above the support plate and is substantially closed; the top of the buffer tank is provided with a liquid inlet and a pressure balance pipe; the liquid inlet is provided with a second electrically-operated on-off valve; the free end of the pressure balance pipe is bent and faces the inner bottom of the tank body; the bottom of the buffer tank is provided with a liquid outlet pipe; the liquid outlet pipe penetrates through the working window and the lower end of the liquid outlet pipe extends into the tank body; a liquid distribution assembly, the liquid distribution assembly is located in the tank body and the height of the liquid distribution assembly is 1 / 2-2 / 3 of the depth of the tank body; the liquid distribution assembly and the adjacent side wall and bottom of the tank body have a gap of 5-50 cm; the top of the liquid distribution assembly is connected with the lower end of the liquid outlet pipe.

2. The inorganic proppant immersion reinforcement device of claim 1, wherein, The buffer tank is provided with a liquid level sensor.

3. The inorganic proppant immersion reinforcement device of claim 1, wherein, The liquid distribution assembly comprises one or more circular liquid distribution members; when the number of the circular liquid distribution members is two or more, the circular liquid distribution members are connected in series.

4. The inorganic proppant immersion reinforcement device of claim 3, wherein, The circular liquid distribution member comprises: a connecting main pipe, the two ends of the connecting main pipe are penetrated; a plurality of linear liquid distribution pipes, the linear liquid distribution pipes are uniformly arranged on the circumferential outer wall of the connecting main pipe in a circumferential mode; one end of the linear liquid distribution pipe is communicated with the connecting main pipe and the other end is closed; a plurality of first liquid distribution holes are formed in the lower surface of the linear liquid distribution pipe; a plurality of circular liquid distribution pipes, the circular liquid distribution pipes are arranged in a concentric circle mode with the center of the connecting main pipe as the geometric center and intersect with the linear liquid distribution pipes and are communicated with the linear liquid distribution pipes; a plurality of second liquid distribution holes are formed in the lower surface of the circular liquid distribution pipe; wherein the lower end of the connecting main pipe of the lowermost circular liquid distribution member is closed; when the number of the circular liquid distribution members is two or more, the connecting main pipes between adjacent circular liquid distribution members are detachably connected.

5. The inorganic proppant immersion reinforcement device of claim 4, wherein, The cross sections of the linear liquid distribution pipe and the circular liquid distribution pipe are semicircular fan-shaped or sharp-angled and respectively have a groove-shaped recessed area; the groove of the groove-shaped recessed area faces the bottom of the tank body and the first liquid distribution hole and the second liquid distribution hole are located at the groove bottom of the groove-shaped recessed area.

6. The inorganic proppant immersion reinforcement device of claims 4 or 5, wherein, When the number of the circular liquid distribution members is two or more, the positions of the linear liquid distribution pipes and the circular liquid distribution pipes of the upper and lower adjacent circular liquid distribution members are staggered.

7. The inorganic proppant immersion reinforcement device of claim 6, wherein, From bottom to top, the opening number and / or opening area of the first liquid distribution hole and the second liquid distribution hole on the circular liquid distribution member gradually decrease.

8. The inorganic proppant immersion reinforcement device of any of claims 1-5 and 7, wherein, The fan-shaped part of one side of the support plate is provided with a circulating pump; the inlet pipe end of the circulating pump extends into the tank body and is provided with a filter; the outlet pipe end of the circulating pump is connected with the circulating interface arranged on the top of the buffer tank through a flexible pipe.

9. The inorganic proppant immersion reinforcement device of claim 8, wherein, The diameter of the working window is larger than the diameter of the liquid discharge pipe; limit seats are symmetrically arranged on the sector-shaped parts on both sides of the support plate, and a guide through slot is formed on the top surface of each limit seat; guide ear plates are arranged on the opposite side walls of the buffer tank, and are respectively inserted into the corresponding guide through slots; a gap is formed between the lower part of the guide ear plate and the bottom of the guide through slot; rollers are arranged on the opposite sides of the bottom of the buffer tank, and the rollers are in rolling contact with the support plate; a hydraulic oil cylinder is further arranged on the sector-shaped part of the support plate, and the free end of the piston rod of the hydraulic oil cylinder is connected to the pin shaft of the guide ear plate on the side close to the hydraulic oil cylinder.

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