Fracturing fiber filling device
By designing a multi-stage stirred hydration fracturing device, the problems of incomplete dispersion, poor uniformity, large water consumption and inaccurate control of the filling amount during the fiber addition process are solved, and the uniform mixing and precise control of the filling amount between the fiber and the fracturing liquid are achieved.
Patent Information
- Application Number
- CN202421589334.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-07-08
AI Technical Summary
In the prior art In the oil and gas development fracturing construction, there are problems such as incomplete dispersion, poor uniformity, large water consumption, inaccurate control of fracturing fluid during the fiber addition process.
A fracturing device is designed, using multi-stage stirring and hydration technology, through the combination of variable frequency conveying crane and dispersion cylinder, the fiber is completely stirred and dispersed, and mixed with the fracturing liquid evenly, controlling the fiber addition ratio, and achieving accurate control of the filling amount.
Multi-stage stirring and hydration of fibers is achieved, and the dispersion is thoroughly mixed with the fracturing liquid, which reduces the amount of water used and does not affect the performance of the fracturing liquid, ensures the control of the fiber addition ratio and the accuracy of the filling volume, and avoids fiber flying and pipeline blockage.
Smart Images
Figure CN222649982U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fiber addition in the process of oil and gas development fracturing construction, in particular to a fracturing fiber filling device. Background Art
[0002] After the fracturing fibers are evenly dispersed and injected, they are evenly mixed in proportion by a sand mixer, and the mixed liquid is pumped into the bottom hole reservoir by the fracturing truck, so that the proppant near the fracture surface is stably laid under the mesh constraint of the fiber, which minimizes or eliminates the flow of the proppant into the wellbore during the flowback or production process, and can enhance the resistance of the proppant sand arch to move and deform, greatly improve the stability of the proppant filling layer, and play a role in sand consolidation and sand prevention; after the sand mixer is pulse-pumped in a section, a section of pure liquid is pulse-pumped in a section, and repeated alternating cycles of sand fracturing are carried out to form a high conductivity channel. The fracture conductivity is not affected by the proppant permeability. The oil and gas do not pass through the proppant filling layer, but flow through the high conductivity channel, creating a complex and stable open flow channel network inside the fracture, maximizing the oil and gas production and recovery rate.
[0003] The fracturing fiber has a micron-level diameter and a length of 3 to 12 mm. It is clustered or cotton-like. If gas transportation and filling is used, the process air tightness is poor during the dispersion and transportation of the fibers to the mixing tank of the sand mixer. The fiber damage is large, and the finer fibers will float around the construction area with the overflow gas, causing air pollution. The extremely fine fibers floating in the air can cause damage to the exposed skin and respiratory system of the human body, and the fibers are prone to blockage in the conveying pipeline. It is impossible to ensure the continuous and accurate addition amount, and it is impossible to implement large-volume filling. At the same time, since the fibers are suspended in the upper layer of the mixing tank, the fibers and the fracturing fluid cannot be evenly mixed. If water pump jet and circulating stirring filling equipment are used, the fibers are dispersed only by jet and water pump impeller, and the dispersion is not thorough, which is easy to form "fiber clusters", with poor uniformity, backflow blocking the pipeline, and a large amount of water, which is easy to change the performance indicators of the fracturing fluid, and the liquid level in the sand mixer is difficult to control. Utility Model Content
[0004] The technical problem to be solved by the utility model is to design a multi-stage stirring hydration device, which has thorough dispersion, can be evenly mixed with the fracturing fluid, uses less water, does not affect the performance indicators of the fracturing fluid, has a controllable fiber addition ratio, is fully sealed, operates automatically, and can achieve precise control of the filling amount.
[0005] In order to achieve the above purpose, the technical solution provided by the utility model is:
[0006] A fracturing fiber filling device comprises a box body, a control box is installed in the box body, a storage bin is arranged in the box body, the storage bin is installed in the box body through a plurality of weighing sensors, a stirring blade is rotatably connected in the storage bin, the stirring blade is located above the unloading port of the storage bin, a variable frequency conveying auger is arranged below the storage bin, the stirring blade is connected to the variable frequency motor of the variable frequency conveying auger, the unloading port of the storage bin is fixedly connected to the feeding end of the variable frequency conveying auger, the discharging end of the variable frequency conveying auger is connected to the inlet end of the dispersion cylinder through a soft connecting pipe, and the outlet of the dispersion cylinder The inlet end of the upper side of the material storage box is fixedly connected, the outlet end of the lower side of the material storage box is fixedly connected to the inlet end of the soft conveying auger, the outlet end of the soft conveying auger is connected to the inlet end of the mixing tank of the sand mixing truck, the outlet end of the soft conveying auger is installed with a kite-type dispersion blade, a water tank is fixed in the box, a water pump is fixed on the water tank, the inlet end of the water pump is connected to the water tank, one end of the dispersion cylinder is fixedly connected with multiple nozzles, the outlet end of the water pump is fixedly connected to multiple nozzles, the lower end of the material storage box is connected to the water tank through a return pipe, and a filter is installed at the inlet end of the return pipe. The weighing sensor, the driving motor of the soft conveying auger and the water pump are electrically connected to the control box.
[0007] Specifically, a plurality of vibrators are fixedly installed on the storage bin, a steel plate mesh is fixed inside the storage bin, a sealing cover is installed on the upper end of the storage bin, and the vibrators are electrically connected to the control box.
[0008] Specifically, the variable frequency motor of the variable frequency conveying auger is electrically connected to the control box.
[0009] Specifically, a dispersion blade is rotatably connected inside the dispersion cylinder, a motor is fixed on the dispersion cylinder, the dispersion blade is driven by the motor, the motor is electrically connected to the control box, the dispersion cylinder is tilted, the outlet end of the dispersion cylinder is close to the lower end of the dispersion cylinder, the inlet end of the dispersion cylinder is close to the high end of the dispersion cylinder, and multiple nozzles are installed on the high end of the dispersion cylinder.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] 1. The utility model can perform multi-stage stirring and hydration on the fracturing fiber, the fracturing fiber is dispersed thoroughly, and the fracturing fiber and the fracturing fluid can be evenly mixed.
[0012] 2. The water in the storage box can flow back to the water tank for recycling, with a small amount of water used, which does not affect the performance indicators of the fracturing fluid.
[0013] 3. The control box can be used to control the variable frequency motor of the variable frequency conveying auger, the motor driving the dispersion blades and the driving motor of the soft conveying auger. At the same time, the weighing sensor can detect the remaining amount of fracturing fiber in the storage bin, and the proportion of fracturing fiber addition can be controlled.
[0014] 4. The utility model is fully sealed and automatically operated during the process of conveying fracturing fibers into the mixing tank of the sand mixer, and can realize accurate control of the filling amount.
[0015] 5. Mixing with water during the injection process can prevent the fracturing fibers from flying. It can prevent the finer fibers from floating around the construction area with the overflow gas, causing air pollution and damage to the exposed skin and respiratory system of the human body. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the utility model.
[0017] The names of the parts in the attached figure are: 1. Water tank, 2. Water pump, 3. Control box, 4. Frequency conversion conveying auger, 5. Feeding port, 6. Sprocket, 7. Mixing blade, 8. Vibrator, 9. Storage bin, 10. Sealing cover, 11. Steel plate mesh, 12. Weighing sensor, 13. Sand mixer mixing tank, 14. Flexible connecting pipe, 15. Nozzle, 16. Dispersion cylinder, 17. Dispersion blade, 18. Box body, 19. Storage box, 20. Soft conveying auger, 21. Return pipe. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0019] Reference Figure 1 As shown, a fracturing fiber injection device includes a box body 18, in which a control box 3 is installed. A storage bin 9 is arranged in the box body 18, on which a plurality of vibrators 8 are fixedly installed, a steel plate mesh 11 is fixed in the storage bin 9, a sealing cover 10 is installed on the upper end of the storage bin 9, and the vibrators 8 are electrically connected to the control box 3.
[0020] The steel plate mesh 11 can filter the fracturing fibers in the storage bin 9. The vibrator 8 can vibrate the storage bin 9, thereby improving the filtering efficiency of the fracturing fibers in the storage bin 9.
[0021] The storage bin 9 is installed in the box 18 through a plurality of weighing sensors 12. A stirring blade 7 is rotatably connected in the storage bin 9, and the steel plate mesh 11 is located above the stirring blade 7, and the stirring blade 7 is located above the unloading port 5 of the storage bin 9.
[0022] A variable frequency conveying auger 4 is arranged below the storage bin 9 , and a feed opening 5 of the storage bin 9 is fixedly connected to a feed end of the variable frequency conveying auger 4 .
[0023] The stirring blade 7 is connected to the variable frequency motor of the variable frequency conveying auger 4. Specifically, the shaft end of one side of the stirring blade 7 extends to the outside of the storage bin 9, and a sprocket 6 is concentrically fixed on the shaft end of the stirring blade 7 outside the storage bin 9 and on the output shaft of the variable frequency motor of the variable frequency conveying auger 4, and the two sprockets 6 are connected by chain transmission.
[0024] When the variable frequency motor of the variable frequency conveying auger 4 rotates, it can drive the stirring blade 7 to rotate. During the rotation of the stirring blade 7, the fracturing fiber in the storage bin 9 below the steel plate mesh 11 can be stirred, ensuring that the fracturing fiber can smoothly pass through the discharge port 5 and enter the variable frequency conveying auger 4.
[0025] The variable frequency motor of the variable frequency conveying auger 4 is electrically connected to the control box 3. The control box 3 adjusts the conveying amount of the fracturing fiber by the variable frequency conveying auger 4 per unit time by adjusting the speed of the variable frequency motor of the variable frequency conveying auger 4.
[0026] The discharge end of the variable frequency conveying auger 4 is connected to the inlet end of the dispersion cylinder 16 through the soft connecting pipe 14 .
[0027] The dispersion tube 16 is rotatably connected with dispersion blades 17 . A motor is fixed on the dispersion tube 16 . The dispersion blades 17 are driven by the motor. The motor is electrically connected to the control box 3 .
[0028] The dispersion cylinder 16 is tilted, the outlet end of the dispersion cylinder 16 is close to the lower end of the dispersion cylinder 16, and the inlet end of the dispersion cylinder 16 is close to the upper end of the dispersion cylinder 16. A plurality of nozzles 15 are installed on the upper end of the dispersion cylinder 16. The dispersion cylinder 16 is tilted to facilitate the fracturing fiber therein to enter the storage box 19.
[0029] The outlet of the dispersion cylinder 16 is fixedly connected to the inlet end of the upper side of the storage box 19, and the outlet end of the lower side of the storage box 19 is fixedly connected to the inlet end of the soft conveying auger 20, and the outlet end of the soft conveying auger 20 is connected to the inlet end of the mixing tank 13 of the sand mixing truck. The outlet end of the soft conveying auger 20 is installed with a kite-type dispersion blade 17.
[0030] A water tank 1 is fixed in the box body 18, a water pump 2 is fixed on the water tank 1, the inlet end of the water pump 2 is connected to the water tank 1, a plurality of nozzles 15 are fixedly connected to one end of the dispersion tube 16, and the outlet end of the water pump 2 is fixedly connected to the plurality of nozzles 15. The number of the nozzles 15 is 4 to 6.
[0031] Start the water pump 2, which can allow the water in the water tank 1 to enter the dispersion tube 16 through the nozzle 15 and mix with the fracturing fibers in the dispersion tube 16. The water entering the dispersion tube 16 and mixing with the fracturing fibers in the dispersion tube 16 can prevent the fracturing fibers from flying after being discharged from the outlet end of the soft conveying auger 20.
[0032] The lower end of the storage box 19 is communicated with the water tank 1 through a return pipe 21. A filter screen is installed at the inlet end of the return pipe 21.
[0033] After the water and fracturing fiber enter the storage box 19, the excess water can flow back to the water tank 1 through the return pipe 21, which can prevent excessive water from entering the mixing tank 13 of the sand mixer and affecting the performance index of the fracturing fluid. At the same time, the excess water flows back to the water tank 1 for recycling, which can reduce the water consumption in the fracturing fiber transportation process and reduce the cost of fracturing limited transportation.
[0034] The filter installed at the inlet end of the return pipe 21 can intercept the fracturing fibers and prevent the fracturing fibers from entering the water tank 1 .
[0035] The weighing sensor 12 , the driving motor of the soft conveying auger 20 , and the water pump 2 are electrically connected to the control box 3 .
[0036] Through the cooperation of the weighing sensor 12 and the control box 3, the remaining amount of the fracturing fiber in the storage bin 9 can be known in real time, which is convenient for quantitative delivery and addition of the fracturing fiber. The control box 3 can be connected to a computer for communication, and the cooperation of the computer and the control box 3 can realize remote control of the delivery and addition of the fracturing fiber.
[0037] Working principle: Before construction, the fracturing fibers are quantitatively stored in the storage bin 9, and the storage bin 9 is sealed with a sealing cover 10. A steel plate mesh 11 is arranged in the storage bin 9 to filter the fracturing fibers and prevent the fracturing fibers from being piled up.
[0038] When construction begins, the filling amount of the fracturing fiber is set on the control box 3, and the variable frequency conveying auger 4 is started. The fracturing fiber enters the variable frequency conveying auger 4 through the discharge port 5 and is quantitatively conveyed to the dispersion cylinder 16. When the variable frequency conveying auger 4 is running, the stirring blade 7 rotates to stir the fracturing fiber in the storage box 19, which facilitates the discharge of the fracturing fiber.
[0039] A fixed amount of fracturing fiber enters the dispersion tube 16 through the soft connecting pipe 14, and at the same time, the water pump 2 is operated to spray the water in the water tank 1 through multiple nozzles 15 to mix with the fracturing fiber in the dispersion tube 16. The fracturing fiber is evenly hydrated and dispersed through the dispersion blades 17 in the dispersion tube 16. The hydrated and dispersed fracturing fiber enters the storage box 19. The soft conveying auger 20 is started to convey the dispersed fracturing fiber and part of the water into the mixing tank 13 of the sand mixing vehicle. The outlet end of the soft conveying auger 20 is provided with a kite-type dispersion blade 17 to increase the spraying area of the fracturing fiber after it is discharged from the outlet end of the soft conveying auger 20, so as to facilitate the mixing of the fracturing fiber with the liquid in the mixing tank 13 of the sand mixing vehicle. The excess water in the storage box 19 flows back to the water tank 1 through the return pipe, which can prevent too much water from being added to the mixing tank 13 of the sand mixing vehicle. The water flowing through the return pipe can be recycled, thereby reducing the transportation cost of the fracturing fiber.
[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A fracturing fiber injection device, comprising a box (18), a control box (3) installed in the box (18), and a storage bin (9) arranged in the box (18), characterized in that: The storage bin (9) is installed in a box body (18) through a plurality of weighing sensors (12). A stirring blade (7) is rotatably connected in the storage bin (9). The stirring blade (7) is located above a discharge port (5) of the storage bin (9). A variable frequency conveying auger (4) is arranged below the storage bin (9). The stirring blade (7) is connected to a variable frequency motor of the variable frequency conveying auger (4) through a transmission connection. The discharge port (5) of the storage bin (9) is fixedly connected to a feed end of the variable frequency conveying auger (4). The discharge end of the variable frequency conveying auger (4) is connected to an inlet end of a dispersion cylinder (16) through a flexible connecting pipe (14). The outlet of the dispersion cylinder (16) is connected to a The inlet end of the upper side of the material storage box (19) is fixedly connected, the outlet end of the lower side of the material storage box (19) is fixedly connected to the inlet end of the soft conveying auger (20), the outlet end of the soft conveying auger (20) is connected to the inlet end of the mixing tank (13) of the sand mixing vehicle, a water tank (1) is fixed in the box body (18), a water pump (2) is fixed on the water tank (1), the inlet end of the water pump (2) is connected to the water tank (1), one end of the dispersion cylinder (16) is fixedly connected to a plurality of nozzles (15), the outlet end of the water pump (2) is fixedly connected to the plurality of nozzles (15), and the lower end of the material storage box (19) is connected to the water tank (1) through a return pipe (21).
2. A fracturing fiber injection device according to claim 1, characterized in that: A plurality of vibrators (8) are fixedly mounted on the storage bin (9), a steel plate mesh (11) is fixed inside the storage bin (9), the steel plate mesh (11) is located above the stirring blade (7), a sealing cover (10) is mounted on the upper end of the storage bin (9), and the vibrators (8) are electrically connected to the control box (3).
3. A fracturing fiber injection device according to claim 1, characterized in that: The shaft end of one side of the stirring blade (7) extends to the outside of the storage bin (9), and a sprocket (6) is concentrically fixed on the shaft end of the stirring blade (7) outside the storage bin (9) and on the output shaft of the variable frequency motor of the variable frequency conveying auger (4), and the two sprockets (6) are connected by a chain transmission, and the variable frequency motor of the variable frequency conveying auger (4) is electrically connected to the control box (3).
4. A fracturing fiber injection device according to claim 1, characterized in that: A dispersion blade (17) is rotatably connected inside the dispersion cylinder (16), a motor is fixed on the dispersion cylinder (16), the dispersion blade (17) is driven by the motor, and the motor is electrically connected to the control box (3). The dispersion cylinder (16) is tilted, the outlet end of the dispersion cylinder (16) is close to the lower end of the dispersion cylinder (16), the inlet end of the dispersion cylinder (16) is close to the upper end of the dispersion cylinder (16), and a plurality of nozzles (15) are installed on the upper end of the dispersion cylinder (16).
5. A fracturing fiber injection device according to claim 1, characterized in that: The weighing sensor (12), the driving motor of the soft conveying auger (20) and the water pump (2) are electrically connected to the control box (3).
6. A fracturing fiber injection device according to claim 1, characterized in that: The outlet end of the soft conveying auger (20) is provided with a kite-type dispersion blade (17).
7. A fracturing fiber injection device according to claim 1, characterized in that: A filter screen is installed at the inlet end of the water return pipe (21).