A powder thickener dispersion device for salt-resistant fracturing fluid

Abstract

This invention discloses a powder thickener dispersion device for salt-resistant fracturing fluid, relating to the field of petroleum engineering technology. The invention includes a dispersion tank, a feed pipe located at the center of its top, a discharge pipe located at the center of its bottom, a drive assembly on one side wall of the dispersion tank, a vibration assembly located at the top inside the dispersion tank, and a bubble-blowing assembly located at the bottom of the other side wall. This invention uses the drive assembly and vibration assembly to drive the vibration box to move back and forth continuously, causing the powder thickener inside the vibration box to vibrate, preventing clogging of the screen. This structure is simple, low-cost, and also provides a buffering effect for the vibration box. Furthermore, the bubble-blowing assembly generates a large number of bubbles in the liquid, which continuously tumble and move the powder thickener, thereby improving the dispersion effect and efficiency of the powder thickener.

Description

Technical Field

[0001] This utility model belongs to the field of petroleum engineering technology, and in particular relates to a powder thickener dispersion device for salt-resistant fracturing fluid. Background Technology

[0002] Salt-tolerant fracturing fluid is a hydraulic fracturing fluid system specifically designed for high-salinity (high-mineralization) formation environments. Its core characteristic lies in its ability to maintain good thickening performance, proppant carrying capacity, rheological stability, and controllable gel breaking even in the presence of high concentrations of salt ions (such as Na⁺, K⁺, Ca²⁺, Mg²⁺, etc.). It is a key technology for solving the fracturing and stimulation problems of high-salinity oil and gas reservoirs. The dispersion device of the salt-tolerant fracturing fluid powder thickener is the core component of the fracturing fluid mixing equipment. It is specifically designed to quickly and uniformly disperse and dissolve solid powder thickeners (such as hydrophobic associating polymers, modified cellulose, etc.) into the base fluid (water or brine), avoiding problems such as clumping, fisheyes, and incomplete dissolution.

[0003] A search revealed that publication number CN220478690U, with an application date of June 8, 2023, discloses a dispersion device for suspending agent production. This device relates to the field of dispersion device technology and addresses the problem that directly adding solid materials to a liquid during production can easily lead to solid material agglomeration and particle formation, preventing complete integration into the liquid. The device includes a dispersion mechanism. This mechanism comprises a rotating block and a rectangular frame. The circular block at the right end of the rotating block drives two sets of sliding rods to reciprocate up and down via the rectangular frame. A connecting plate and a stirring rod are also included. Simultaneously, the reciprocating motion of the two sets of sliding rods causes the connecting plate to move the stirring rod up and down, thereby moving the sieve disc up and down. This allows for simultaneous stirring and dispersion by the two stirring plates, while also agitating the raw material within the sieve disc to prevent clogging. The material is then evenly discharged through the sieve holes, thus solving the problem of solid material agglomeration and particle formation, preventing complete integration into the liquid, when directly adding solid materials to a liquid during production.

[0004] However, it still has the following drawbacks in practical use:

[0005] Existing powder thickener dispersion devices for salt-resistant fracturing fluids use a dispersion mechanism to move the screen disc, but the mechanism is complex, costly, and can affect the service life of the screen disc.

[0006] 2. In existing salt-resistant fracturing fluid powder thickener dispersion devices, the powder that falls off during use automatically dissolves in the mixing tank. However, this method results in poor powder dispersion and affects dissolution efficiency. Therefore, we provide a salt-resistant fracturing fluid powder thickener dispersion device to solve the aforementioned problems. Utility Model Content

[0007] The purpose of this invention is to provide a powder thickener dispersion device for salt-resistant fracturing fluid. By setting a driving component and a oscillating component, the oscillating box can be driven to move up and down repeatedly, causing the powder thickener inside the oscillating box to vibrate and avoid clogging of the screen. This structure is simple, low in cost, and can also buffer the oscillating box. In addition, the bubble blowing component generates a large number of bubbles in the liquid, which continuously roll and drive the powder thickener to move, thereby improving the dispersion effect and efficiency of the powder thickener.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0009] This utility model is a powder thickener dispersion device for salt-resistant fracturing fluid, including a dispersion tank and a feed pipe located at the center of its top. A discharge pipe is located at the center of the bottom of the dispersion tank. A drive component is located on one side wall of the dispersion tank. A vibration component is located at the top of the inside of the dispersion tank. A bubble blowing component is located at the bottom of the other side wall of the dispersion tank.

[0010] The drive assembly includes a motor mounted on the outer wall of the dispersion tank, and a first rotating shaft mounted on the output shaft of the motor via a coupling;

[0011] The oscillation assembly includes an oscillation box located above the inside of the dispersion barrel, and sliders fixed to the top of the front and rear end faces of the oscillation box, with the sliders slidably installed inside the slide frame;

[0012] The bubble blowing assembly includes a blower mounted on the outer wall of the dispersion tank and a filter cover located at the air inlet of the blower.

[0013] The present invention is further configured such that a crushing blade is fixed on the outer wall of the first rotating shaft, and the other end of the first rotating shaft passes through the bearing and the drive pulley on the dispersion barrel in sequence and is connected to the bearing on the inner wall of the dispersion barrel.

[0014] The present invention is further configured such that the outer wall of the driving pulley is connected to the outer wall of the driven pulley via a belt, and a second rotating shaft is installed at the center of one side wall of the driven pulley.

[0015] The present invention is further configured such that the other end of the second rotating shaft passes through the bearing on the dispersion barrel and is connected to the cam, and the cam is located at the bottom of the oscillation box.

[0016] The present invention is further configured such that a sieve plate is installed at the bottom of the inside of the shaking box, a stirring component is provided on the upper surface of the sieve plate, and a guide rod is slidably installed in the sliding hole inside the slider.

[0017] The present invention is further configured such that both ends of the guide rod are fixed on the inner wall of the slide frame, and springs are sleeved on the upper and lower parts of the outer wall of the guide rod.

[0018] The present invention is further configured such that the air outlet end of the fan is connected to the annular pipe through a pipe joint, and nozzles are evenly spaced on the upper surface of the annular pipe along its circumference.

[0019] This utility model has the following beneficial effects:

[0020] This invention, by setting up a drive component and a vibration component, allows the motor to drive the vibration box to move up and down repeatedly under the elastic action of the spring, causing the powder thickener inside the vibration box to vibrate and preventing the screen plate from clogging. This structure is simple, low in cost, and also acts as a buffer for the vibration box. It solves the problem that existing powder thickener dispersion devices for salt-resistant fracturing fluids use a dispersion mechanism to drive the screen plate, which has a complex structure, high cost, and also affects the service life of the screen plate.

[0021] This invention incorporates a bubble-blowing component. A blower draws in external air and sprays it into the dispersion tank, generating a large number of bubbles in the liquid. These bubbles continuously tumble and move the powder thickener, thereby improving the dispersion effect and efficiency of the powder thickener. This solves the problem that existing powder thickener dispersion devices for salt-resistant fracturing fluids, where the powder shaken off falls into the mixing tank and automatically dissolves, result in poor dispersion and reduced dissolution efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a powder thickener dispersion device for a salt-resistant fracturing fluid.

[0024] Figure 2 This is a cross-sectional view of a powder thickener dispersion device for a salt-resistant fracturing fluid.

[0025] Figure 3 This is a structural diagram of the driving component.

[0026] Figure 4 This is a disassembly diagram of the oscillation component.

[0027] Figure 5 This is a structural diagram of the bubble blowing assembly.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 100-Dispersion tank, 101-Feed pipe, 102-Discharge pipe, 200-Drive assembly, 201-Motor, 202-First rotating shaft, 202a-Crushing blade, 202b-Drive pulley, 203-Second rotating shaft, 203a-Driven pulley, 204-Cam, 300-Vibration assembly, 301-Vibration box, 302-Slider, 303-Sieve plate, 304-Stirring assembly, 305-Sliding frame, 306-Guide rod, 306a-Spring, 400-Bubble blowing assembly, 401-Blower, 402-Filter cover, 403-Annular tube, 403a-Nozzle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0031] Please see Figures 1 to 4 This utility model is a powder thickener dispersion device for salt-resistant fracturing fluid, including a dispersion tank 100 and a feed pipe 101 located at the center of its top. A discharge pipe 102 is located at the center of the bottom of the dispersion tank 100. A drive assembly 200 is located on one side wall of the dispersion tank 100, and an oscillation assembly 300 is located inside the upper part of the dispersion tank 100. The drive assembly 200 includes a motor 201 mounted on the outer wall of the dispersion tank 100 and a first rotating shaft 202 mounted on the output shaft of the motor 201 via a coupling. The oscillation assembly 300 includes an oscillation box 301 located inside the upper part of the dispersion tank 100, and sliders 302 are fixedly mounted on the top of the front and rear end faces of the oscillation box 301. The sliders 302 are slidably mounted inside the slide frame 305.

[0032] Specifically, a crushing blade 202a is fixed on the outer wall of the first rotating shaft 202. The other end of the first rotating shaft 202 passes through the bearing on the dispersion tank 100 and the driving pulley 202b in sequence and is connected to the bearing on the inner wall of the dispersion tank 100. The outer wall of the driving pulley 202b is connected to the outer wall of the driven pulley 203a via a belt. A second rotating shaft 203 is installed at the center of one side wall of the driven pulley 203a. The other end of the second rotating shaft 203 passes through the bearing on the dispersion tank 100 and is connected to the cam 204. The cam 204 is located at the bottom of the shaking box 301. A sieve plate 303 is installed at the bottom of the inside of the shaking box 301. A stirring assembly 304 is provided on the upper surface of the sieve plate 303. A guide rod 306 is slidably installed in the sliding hole inside the slider 302. The two ends of the guide rod 306 are fixed on the inner wall of the sliding frame 305 respectively. Springs 306a are sleeved on the upper and lower sides of the outer wall of the guide rod 306.

[0033] Furthermore, the pulverizing blade 202a is existing technology and can pulverize powder. The sliding frame 305 is fixed at the top inside the dispersion tank 100. The vibrating box 301 can move up and down under the action of the guide rod 306 and the slider 302. The guide rod 306 guides and limits the slider 302. The stirring assembly 304 is existing technology and will not be described in detail here. Under the elastic action of the spring 306a, it can protect the vibrating box 301.

[0034] The operation process of this embodiment is as follows: The powder thickener is fed into the vibrating box 301 through the feed pipe 101. The motor 201 is started, and the output shaft of the motor 201 rotates, driving the first rotating shaft 202 to rotate via a coupling. The rotation of the first rotating shaft 202 drives the driving pulley 202b and the crushing blade 202a to rotate. The outer walls of the driving pulley 202b and the driven pulley 203a are connected by a belt. Therefore, when the driving pulley 202b rotates, it drives the driven pulley 203a to rotate under the action of the belt, causing the second rotating shaft 202b to rotate. 03 and cam 204 rotate synchronously. The rotation of cam 204 will continuously push the vibrating box 301 to rise. The rise of vibrating box 301 will take the slider 302 up along the outer wall of guide rod 306 and squeeze spring 306a. Under the elastic action of spring 306a, it will push vibrating box 301 down, so that vibrating box 301 will continuously move up and down, causing the powder thickener inside vibrating, avoiding clogging of screen 303. This structure is simple, low cost, and can also buffer the vibrating box 301. Example 2

[0035] Please see Figure 2 and Figure 5Based on Example 1, unlike the first example, a bubble blowing assembly 400 is provided at the bottom of the other side wall of the dispersion tank 100. The bubble blowing assembly 400 includes a blower 401 installed on the outer wall of the dispersion tank 100 and a filter cover 402 installed at the air inlet of the blower 401. This solves the problem that the powder that falls off the existing powder thickener dispersion device of salt-resistant fracturing fluid falls into the mixing tank and dissolves automatically during use, but the dispersion effect of the powder is poor and the dissolution efficiency is affected.

[0036] Specifically, the air outlet of the fan 401 is connected to the annular pipe 403 through a pipe joint, and nozzles 403a are evenly spaced on the upper surface of the annular pipe 403 along its circumference.

[0037] Furthermore, the filter cover 402 can filter the extracted air, the pipe joint serves as a pipe connection, and multiple nozzles 403a can be used to evenly distribute and spray the air.

[0038] The operation process of this embodiment is as follows: After the powder thickener falls from the sieve plate 303, it will be cut and crushed by the crushing blade 202a and then integrated into the liquid. At this time, the blower 401 is started. The blower 401 runs to draw in external air. The air filtered by the filter cover 402 enters the annular pipe 403 and is then sprayed into the liquid by the nozzle 403a on the annular pipe 403. This causes a large number of bubbles to be generated in the liquid, which continuously roll and drive the powder thickener to move, thereby improving the dispersion effect and efficiency of the powder thickener.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

Claims

1. A powder thickening agent dispersing device for salt-resistant fracturing fluid, comprising a dispersing barrel (100), and a feeding pipe (101) arranged at the top center position of the dispersing barrel (100), and a discharging pipe (102) arranged at the bottom center position of the dispersing barrel (100), characterized in that: A driving component (200) is provided on one side wall of the dispersion tank (100), an oscillation component (300) is provided on the upper part of the interior of the dispersion tank (100), and a bubble blowing component (400) is provided on the bottom of the other side wall of the dispersion tank (100). The drive assembly (200) includes a motor (201) mounted on the outer wall of the dispersion barrel (100) and a first rotating shaft (202) mounted on the output shaft of the motor (201) via a coupling. The oscillation assembly (300) includes an oscillation box (301) disposed above the interior of the dispersion barrel (100), and sliders (302) are fixedly provided on the top of the front and rear end faces of the oscillation box (301), and the sliders (302) are slidably installed inside the slide frame (305); The bubble blowing assembly (400) includes a blower (401) mounted on the outer wall of the dispersion tank (100) and a filter cover (402) disposed at the air inlet end of the blower (401).

2. The powder thickening agent dispersing device of the salt-resistant fracturing fluid according to claim 1, characterized in that, A crushing blade (202a) is fixed on the outer wall of the first rotating shaft (202), and the other end of the first rotating shaft (202) passes through the bearing and drive pulley (202b) on the dispersion barrel (100) and is connected to the bearing on the inner wall of the dispersion barrel (100).

3. The powder thickener dispersion device for salt-resistant fracturing fluid according to claim 2, characterized in that, The outer wall of the driving pulley (202b) is connected to the outer wall of the driven pulley (203a) via a belt, and a second rotating shaft (203) is installed at the center of one side wall of the driven pulley (203a).

4. The powder thickener dispersion device for salt-resistant fracturing fluid according to claim 3, characterized in that, The other end of the second rotating shaft (203) passes through the bearing on the dispersion barrel (100) and is connected to the cam (204), and the cam (204) is located at the bottom of the oscillating box (301).

5. The powder thickener dispersion device for salt-resistant fracturing fluid according to claim 1, characterized in that, The bottom of the oscillating box (301) is equipped with a sieve plate (303), and a stirring assembly (304) is provided on the upper surface of the sieve plate (303). A guide rod (306) is slidably installed in the sliding hole inside the slider (302).

6. The powder thickener dispersion device for salt-resistant fracturing fluid according to claim 5, characterized in that, The two ends of the guide rod (306) are respectively fixed on the inner wall of the slide frame (305), and springs (306a) are sleeved on the upper and lower sides of the outer wall of the guide rod (306).

7. The powder thickener dispersion device for salt-resistant fracturing fluid according to claim 1, characterized in that, The air outlet of the fan (401) is connected to the annular pipe (403) through a pipe joint. The upper surface of the annular pipe (403) is evenly spaced with nozzles (403a) along its circumference.

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