Oilfield fracturing fluid mixing unit

Abstract

This utility model relates to the field of fracturing fluid processing technology and discloses a mixing device for oil production fracturing fluid, including a mixing tank. The mixing tank has legs installed at its bottom and a tank cover bolted to its top. A mixing mechanism is provided on the mixing tank and the tank cover, capable of mixing and cleaning the oil production fracturing fluid. A discharge mechanism is provided at the bottom of the mixing tank, improving the fracturing fluid discharge efficiency. A second cleaning component is installed inside the mixing tank; scrapers and scrapers can not only mix the fracturing fluid but also scrape off and clean the fracturing fluid adhering to the inner wall of the mixing tank after discharge. A first cleaning component is installed at the top of the mixing tank, where a high-pressure nozzle sprays water onto the inner wall of the mixing tank and the mixing rod for further cleaning. A pump is installed at the bottom of the mixing tank, drawing fracturing fluid from the mixing tank through a discharge pipe, improving the fracturing fluid discharge efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fracturing fluid processing, specifically to a mixing device for fracturing fluid used in oil production. Background Technology

[0002] In the process of oil and gas field development, fracturing is the most common way to increase production. Fracturing fluid is a heterogeneous and unstable chemical system formed by mixing a variety of additives in a certain proportion. It is the working fluid used to fracture and transform oil and gas reservoirs. Its main function is to transfer the high pressure generated by the surface equipment to the formation, causing the formation to fracture and transport proppant along the fracture. The fracturing fluid is discharged after being mixed with additives. However, fracturing fluid has a certain viscosity, and some fracturing fluid will remain on the inner wall of the mixing tank and the mixing rod, which is not easy to clean. In addition, the efficiency of fracturing fluid discharge needs to be improved.

[0003] Therefore, it is necessary to propose a mixing device for fracturing fluid used in oil production. Utility Model Content

[0004] The purpose of this invention is to provide a mixing device for fracturing fluid used in oil production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mixing device for fracturing fluid used in oil production includes a mixing tank, a support leg installed at the bottom of the mixing tank, a tank cover installed at the top of the mixing tank by bolts, a mixing mechanism provided on the mixing tank and the tank cover, the mixing mechanism being able to mix and clean the fracturing fluid used in oil production; and a discharge mechanism provided at the bottom of the mixing tank, the discharge mechanism being able to improve the fracturing fluid discharge efficiency.

[0007] The mixing mechanism includes a support tube, a mixing rod, a first cleaning component, and a second cleaning component. The support tube is rotatably mounted in the middle of the tank cover, the mixing rod is mounted on the side wall of the support tube, the first cleaning component is mounted on the tank cover, and the second cleaning component is mounted on the mixing rod.

[0008] Preferably, the side wall of the support tube has a liquid outlet, the outer wall of the support tube is rotatably connected to a support frame, and the support frame is installed inside the mixing tank by bolts.

[0009] Preferably, a liquid inlet hopper is installed at the upper end of the support tube, and a feed hopper is installed at the upper end of the tank cover.

[0010] Preferably, a first gear is fixedly installed on the upper side wall of the support tube, and a motor base is also installed on the upper end of the can cover. A geared motor is installed inside the motor base, and the output end of the geared motor is connected to a second gear, which meshes with the first gear.

[0011] Preferably, the second cleaning component includes a first connecting rod, a second connecting rod, a scraper, and a scraper. One end of the first connecting rod is fixedly mounted on the mixing rod, one end of the second connecting rod is fixedly mounted on the scraper, and the other end of the second connecting rod is slidably inserted into the inner wall of the mixing rod and connected to the first connecting rod by bolts. The scraper is mounted on the bottom side wall of the support tube.

[0012] Preferably, the first cleaning component includes a first water guide pipe, a second water guide pipe, and a connector. The first water guide pipe and the second water guide pipe are respectively installed on the upper end of the tank lid. The first water guide pipe and the second water guide pipe are internally connected. The connector is connected to the side wall of the first water guide pipe.

[0013] Preferably, a first valve is installed on the connector, a first high-pressure nozzle is threaded onto the bottom of the first water guide pipe, and a second high-pressure nozzle is threaded onto the bottom of the second water guide pipe.

[0014] Preferably, the discharge mechanism includes a discharge pipe, a second valve, and a pump. The discharge pipe is installed at the bottom of the mixing tank, the second valve is installed on the discharge pipe, the pump is located below the mixing tank, and the other end of the discharge pipe is connected to the pump.

[0015] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0016] 1. By setting a second cleaning component inside the mixing tank, the scraper and scraper can not only be used to mix the fracturing fluid, but also to scrape off and clean the fracturing fluid adhering to the inner wall of the mixing tank 1 after discharge. By setting a first cleaning component on the top of the mixing tank, water is sprayed from a high-pressure nozzle to further clean the inner wall of the mixing tank and the mixing rod.

[0017] 2. By installing a pump at the bottom of the mixing tank, the pump draws fracturing fluid from the mixing tank through the discharge pipe, thereby improving the fracturing fluid discharge efficiency. Attached Figure Description

[0018] Figure 1 A schematic diagram of a fracturing fluid mixing device for oil production;

[0019] Figure 2 This is a front view of a fracturing fluid mixing device for oil production.

[0020] Figure 3 A schematic diagram of the installation of the second cleaning component in the mixing device for oil fracturing fluid;

[0021] Figure 4 This is a schematic diagram of the bottom of the tank cover in a fracturing fluid mixing device for oil production.

[0022] Explanation of reference numerals in the attached drawings: 1. Mixing tank; 11. Support leg; 12. Tank cover; 2. Mixing mechanism; 21. Support pipe; 211. Liquid outlet; 212. Support frame; 22. Liquid inlet hopper; 23. First gear; 231. Second gear; 24. Motor base; 241. Gear motor; 25. First cleaning component; 251. First water guide pipe; 252. Second water guide pipe; 253. Connector; 254. First valve; 255. First high-pressure nozzle; 256. Second high-pressure nozzle; 26. Second cleaning component; 261. First connecting rod; 262. Second connecting rod; 263. Scraper; 264. Scraper; 27. Mixing rod; 28. Feed hopper; 3. Discharge mechanism; 31. Discharge pipe; 32. Second valve; 33. Pump. Detailed Implementation

[0023] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-4 ;

[0025] A mixing device for fracturing fluid used in oil production includes a mixing tank 1, with support legs 11 installed at the bottom of the mixing tank 1 and a tank cover 12 bolted to the top of the mixing tank 1. A mixing mechanism 2 is provided on the mixing tank 1 and the tank cover 12, which can mix and clean the fracturing fluid used in oil production. A discharge mechanism 3 is provided at the bottom of the mixing tank 1, which can improve the discharge efficiency of the fracturing fluid.

[0026] The mixing mechanism 2 includes a support pipe 21, a mixing rod 27, a first cleaning component 25, and a second cleaning component 26. The support pipe 21 is rotatably mounted in the middle of the tank cover 12. The support pipe 21 is used not only to drive the mixing rod 27 to rotate, but also to introduce liquid ingredients into the mixing tank 1. The mixing rod 27 is mounted on the side wall of the support pipe 21 and rotates inside the mixing tank 1 to mix the fracturing fluid inside. The second cleaning component 26 is mounted on the mixing rod 27 and is used to clean the inner wall of the mixing tank 1. The first cleaning component 25 is mounted on the tank cover 12 and is used to further clean the inside of the mixing tank 1, improving the cleaning effect. The side wall of the support pipe 21 has a liquid outlet 211. After liquid ingredients are added to the support pipe 21, they flow out through the liquid outlet 211. The lower end of the support pipe 21 is open, and liquid also flows out from the lower end of the support pipe 21. The outer wall of the support pipe 21 is rotatably connected to a support... A support frame 212 is installed inside the mixing tank 1 by bolt sealing. The support frame 212 is easy to disassemble and is used to provide auxiliary support for the lower end of the support tube 21, so that the lower end of the support tube 21 can rotate stably. A liquid inlet hopper 22 is installed at the upper end of the support tube 21, through which liquid ingredients flow into the support tube 21. A feed hopper 28 is installed at the upper end of the tank cover 12, which is used to add powdered ingredients and base liquid into the mixing tank 1. A first gear 23 is fixedly installed on the upper side wall of the support tube 21. A motor base 24 is also installed at the upper end of the tank cover 12. The motor base 24 is used to support and install a geared motor 241. The geared motor 241 is installed inside the motor base 24. The output end of the geared motor 241 is connected to a second gear 231. The second gear 231 meshes with the first gear 23. The geared motor 241 drives the second gear 231 to rotate, which in turn drives the first gear 23 to rotate, and the first gear 23 drives the support tube 21 to rotate.

[0027] Furthermore, the second cleaning component 26 includes a first connecting rod 261, a second connecting rod 262, a scraper 263, and a scraper 264. One end of the first connecting rod 261 is fixedly mounted on the mixing rod 27. The first connecting rod 261 can not only mix the fracturing fluid in the mixing tank 1, but also support and connect the second connecting rod 262. One end of the second connecting rod 262 is fixedly mounted on the scraper 263. The second connecting rod 262 is used to support and install the scraper 263. The second connecting rod 262 is easy to disassemble, so the scraper 263 can also be removed from the mixing rod. Disassembling the first connecting rod 261, the other end of the second connecting rod 262 is slidably inserted into the inner wall of the mixing rod 27 and connected to the first connecting rod 261 by bolts. The scraper 263 slides against the inner wall of the mixing tank 1, which can not only mix the fracturing fluid in the mixing tank 1, but also scrape off and clean the fracturing fluid adhering to the inner wall of the mixing tank 1 after discharge. The scraper 264 is installed on the bottom side wall of the support pipe 21. The scraper 264 slides against the inclined surface at the bottom of the mixing tank 1, which can not only mix the fracturing fluid in the mixing tank 1, but also scrape off and clean the fracturing fluid adhering to the inner wall of the mixing tank 1 after discharge. The liquid scraping cleaning process involves a first cleaning component 25, which includes a first water guide pipe 251, a second water guide pipe 252, and a connector 253. The first and second water guide pipes 251 and 252 are respectively installed on the upper end of the tank cover 12. The first and second water guide pipes 251 and 252 are internally connected. Water enters the first and second water guide pipes 251 and 252 through the connector 253. The connector 253 is connected to the side wall of the first water guide pipe 251, and a first valve 254 is installed on the connector 253. The first valve 254 controls the opening and closing of the connector 253. 53 A water pump is connected to an external water pipe, and water is introduced into the first water pipe 251 through the connector 253. The water then flows into the second water pipe 252. A first high-pressure nozzle 255 is threaded on the bottom of the first water pipe 251. The water in the first water pipe 251 is sprayed into the inner wall of the mixing tank 1 and onto the scraper 263 through the first high-pressure nozzle 255 for further cleaning. A second high-pressure nozzle 256 is threaded on the bottom of the second water pipe 252. The water in the second water pipe 252 is sprayed into the interior of the mixing tank 1 and onto the mixing rod 27 through the second high-pressure nozzle 256 for cleaning.

[0028] Furthermore, the discharge mechanism 3 includes a discharge pipe 31, a second valve 32, and a pump 33. The discharge pipe 31 is installed at the bottom of the mixing tank 1, and the second valve 32 is installed on the discharge pipe 31. The second valve 32 controls the discharge pipe 31 to open. The pump 33 is installed below the mixing tank 1. The pump 33 is a 250ZJ-1-A60 pump manufactured by Hebei Borui Pump Industry Co., Ltd. The pump 33 is used to accelerate the discharge of fracturing fluid from the mixing tank 1. Since the structure and operating principle of the pump 33 are existing technologies, their structure and operating principle will not be described in detail here. The other end of the discharge pipe 31 is connected to the pump 33. The pump 33 draws fracturing fluid from the mixing tank 1 through the discharge pipe 31 to improve the fracturing fluid discharge efficiency.

[0029] The working principle of this utility model is as follows: the support pipe 21 can rotate between the tank cover 12 and the support frame 212. Powdered ingredients and base liquid are added into the mixing tank 1 through the feed hopper 28. Liquid ingredients flow into the support pipe 21 through the liquid inlet hopper 22 and then flow out through the liquid outlet 211. The lower end of the support pipe 21 is open, and liquid also flows out from the lower end of the support pipe 21. The reduction motor 241 drives the second gear 231 to rotate, the second gear 231 drives the first gear 23 to rotate, the first gear 23 drives the support pipe 21 to rotate, and finally the support pipe 21 drives the mixing rod 27 and the scraper 264 to rotate and mix. After mixing is completed, the discharge pipe 31 is opened by opening the second valve 32, and the pump 33 draws fracturing fluid from the mixing tank 1 through the discharge pipe 31. To improve the fracturing fluid discharge efficiency, the mixing rod 27 drives the scraper 263 to rotate. The scraper 263 slides against the inner wall of the mixing tank 1 to scrape off and clean the fracturing fluid adhering to the inner wall of the mixing tank 1 after discharge. The scraper 264 slides against the inclined bottom surface of the mixing tank 1 to scrape off and clean the fracturing fluid adhering to the inner wall of the mixing tank 1 after discharge. The connector 253 is connected to an external water pump through a water pipe. Finally, the first valve 254 is opened, and water enters the first water guide pipe 251 through the connector 253. The water then flows into the second water guide pipe 252. The water in the first water guide pipe 251 is sprayed into the inner wall of the mixing tank 1 and the scraper 263 through the first high-pressure nozzle 255 for further cleaning. The water in the second water guide pipe 252 is sprayed into the interior of the mixing tank 1 and the mixing rod 27 through the second high-pressure nozzle 256 for cleaning.

[0030] In summary, by installing a second cleaning component inside the mixing tank, the scraper and scraper can not only be used to mix the fracturing fluid, but also to scrape off and clean the fracturing fluid adhering to the inner wall of the mixing tank 1 after discharge. By installing a first cleaning component on the top of the mixing tank, water is sprayed onto the inner wall of the mixing tank and the mixing rod by a high-pressure nozzle for further cleaning. By installing a pump at the bottom of the mixing tank, the pump draws fracturing fluid from the mixing tank through the discharge pipe, thereby improving the fracturing fluid discharge efficiency.

Claims

1. A mixing device for fracturing fluid used in oil production, comprising a mixing tank (1), wherein the bottom of the mixing tank (1) is equipped with support legs (11), and the top of the mixing tank (1) is fitted with a tank cover (12) by bolts, characterized in that: The tank lid (12) is equipped with a mixing mechanism (2), which can mix and clean the fracturing fluid used for oil production; The bottom of the mixing tank (1) is equipped with a discharge mechanism (3), which can improve the discharge efficiency of fracturing fluid; The mixing mechanism (2) includes a support tube (21), a mixing rod (27), a first cleaning component (25), and a second cleaning component (26). The support tube (21) is rotatably mounted in the middle of the can cover (12). The mixing rod (27) is mounted on the side wall of the support tube (21). The first cleaning component (25) is mounted on the can cover (12), and the second cleaning component (26) is mounted on the mixing rod (27).

2. The fracturing fluid mixing device for oil extraction according to claim 1, characterized in that: The side wall of the support pipe (21) is provided with a liquid outlet (211), and the outer wall of the support pipe (21) is rotatably connected to the support frame (212). The support frame (212) is installed inside the mixing tank (1) by bolts.

3. The fracturing fluid mixing device for oil extraction according to claim 1, characterized in that: The upper end of the support tube (21) is equipped with a liquid inlet hopper (22), and the upper end of the tank cover (12) is equipped with a feed hopper (28).

4. The mixing device for fracturing fluid used in oil production according to claim 1, characterized in that: The upper end of the support tube (21) is fixedly installed with a first gear (23), and the upper end of the can cover (12) is also installed with a motor base (24). The motor base (24) is equipped with a geared motor (241), and the output end of the geared motor (241) is connected to a second gear (231). The second gear (231) meshes with the first gear (23).

5. The mixing device for fracturing fluid used in oil production according to claim 1, characterized in that: The second cleaning component (26) includes a first connecting rod (261), a second connecting rod (262), a scraper (263), and a scraper (264). One end of the first connecting rod (261) is fixedly installed on the mixing rod (27), and one end of the second connecting rod (262) is fixedly installed on the scraper (263). The other end of the second connecting rod (262) is slidably inserted into the inner wall of the mixing rod (27) and connected to the first connecting rod (261) by bolts. The scraper (264) is installed on the bottom side wall of the support tube (21).

6. The mixing device for fracturing fluid used in oil production according to claim 1, characterized in that: The first cleaning component (25) includes a first water guide pipe (251), a second water guide pipe (252), and a connector (253). The first water guide pipe (251) and the second water guide pipe (252) are respectively installed on the upper end of the tank cover (12). The first water guide pipe (251) and the second water guide pipe (252) are internally connected. The connector (253) is connected to the side wall of the first water guide pipe (251).

7. The mixing device for fracturing fluid used in oil production according to claim 6, characterized in that: A first valve (254) is installed on the connector (253), a first high-pressure nozzle (255) is threaded onto the bottom of the first water pipe (251), and a second high-pressure nozzle (256) is threaded onto the bottom of the second water pipe (252).

8. The mixing device for fracturing fluid used in oil production according to claim 1, characterized in that: The discharge mechanism (3) includes a discharge pipe (31), a second valve (32) and a pump (33). The discharge pipe (31) is installed at the bottom of the mixing tank (1). The second valve (32) is installed on the discharge pipe (31). The pump (33) is installed below the mixing tank (1). The other end of the discharge pipe (31) is connected to the pump (33).

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