Fracturing, fluid preparation and sand mixing integrated automation device

Abstract

A fracturing, fluid preparation and sand mixing integrated automation device relates to the technical field of oil extraction equipment and comprises a device shell, a fracturing fluid inlet pipe and a sand inlet pipe, the fracturing fluid inlet pipe and the sand inlet pipe are arranged on the two sides in the device shell respectively and welded into an integrated pipe, discharging pipes are arranged at the bottoms of the fracturing fluid inlet pipe and the sand inlet pipe, and the discharging pipes are connected with the fracturing fluid inlet pipe and the sand inlet pipe. A material guide pipe I is arranged on the outer wall of the stirring tank I; a gear ring I sleeves the middle part of the outer wall of the stirring tank I; a stirring tank II is arranged below the stirring tank I; a supporting shaft penetrates through the middle part of the stirring tank II; gear teeth of the second gear ring and the first gear ring are meshed with gear teeth of a main gear, and the main gear is connected with a motor through a transmission shaft; a discharge pipe is arranged at the bottom of the stirring tank II. According to the automatic fracturing fluid preparation and sand mixing integrated device, the problems of non-uniform stirring and discontinuous operation are solved.

Description

Technical field:

[0001] The utility model relates to the technical field of oil production equipment, in particular to an integrated automatic device for fracturing liquid preparation and sand mixing. Background technology:

[0002] In the process of oil extraction, fracturing fluid is needed. By injecting fracturing fluid into the extraction layer, the distribution of oil in the extraction layer can be improved, which is beneficial to the extraction of oil. Before injecting the fracturing fluid into the extraction layer, a certain amount of fine sand particles need to be mixed into the fracturing fluid so that the sand particles are dispersed in the fracturing fluid, thereby increasing the pressure of the fracturing fluid. In the prior art, a stirring sand mixing device is generally used to mix the fracturing fluid with the sand particles. However, during the stirring process, the problem of uneven stirring often occurs, which affects the subsequent use. In addition, the existing stirring sand mixing device can only stir in waves, cannot operate continuously, and cannot keep up with the demand for use. Utility model content:

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide an integrated automatic device for fracturing liquid preparation and sand mixing, which solves the problems of uneven mixing, inability to operate continuously, etc.

[0004] In order to solve the problems existing in the background technology, the utility model adopts the following technical scheme: it includes a device shell, a fracturing fluid inlet pipe and a sand inlet pipe, the fracturing fluid inlet pipe and the sand inlet pipe are respectively arranged on both sides of the device shell, the fracturing fluid inlet pipe and the sand inlet pipe are welded into an integrated pipe, and the bottoms of the fracturing fluid inlet pipe and the sand inlet pipe are both provided with discharge pipes, the outer sleeve of the integrated pipe is provided with a stirring tank, the outer wall of the stirring tank is provided with a guide pipe, the middle part of the outer wall of the stirring tank is provided with a gear ring, the lower part of the stirring tank is provided with a stirring tank, and the middle part of the stirring tank is provided with a stirring tank. A supporting shaft is passed through, and both ends of the supporting shaft are connected to the device shell. A material guide pipe 2 is provided on the outer wall of the stirring tank 2, and a gear ring 2 is sleeved on the middle part of the outer wall of the stirring tank 2. The gear teeth of the gear ring 2 and the gear ring 1 are meshed with the gear teeth of the main gear, and the main gear is connected to the motor through a transmission shaft; solenoid valve 1 and solenoid valve 2 are respectively provided on the material guide pipe 1 and the material guide pipe 2; a discharge pipe is provided at the bottom of the stirring tank 2, and a solenoid valve 3 is provided on the discharge pipe; the solenoid valve 1, the solenoid valve 2, the solenoid valve 3 and the motor are respectively connected to an external controller through wires.

[0005] A part of the discharge pipe is fixed on the device shell, and the part of the discharge pipe located inside the device shell is an elastic pipe.

[0006] The material guide pipe 1 and the material guide pipe 2 are made of pipes with the same diameter, and the ports of the material guide pipe 1 and the material guide pipe 2 are matched after being rotated 180 degrees.

[0007] Both ends of the stirring tank 1 and the stirring tank 2 are closed, and sealed bearings are installed at the connection between the stirring tank 1 and the stirring tank 2 and the integrated pipe and the support shaft.

[0008] The transmission shaft passes through the device shell and is connected with the motor, and a sealed bearing is installed at the connection between the transmission shaft and the device shell.

[0009] Flow meters are installed on the fracturing fluid inlet pipe and the sand inlet pipe.

[0010] The integrated tube in the first stirring tank and the outer wall of the support shaft in the second stirring tank are both provided with spiral blades.

[0011] The beneficial effects of the utility model are reasonable design, safety and reliability. The spiral blades and the two stirring tanks rotate simultaneously to improve the stirring efficiency, and the fracturing fluid and sand particles are evenly stirred, which is convenient for subsequent use. The two stirring tanks are used to achieve continuous operation, and uninterrupted stirring meets the use requirements. Description of the drawings:

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a structural diagram of the stirring tank 1 and stirring tank 2 of the utility model;

[0014] Figure 3 It is a usage status diagram of the utility model. Specific implementation method:

[0015] Referring to the figures, the utility model specifically adopts the following implementation mode: it includes a device shell 1, a fracturing fluid inlet pipe 3 and a sand inlet pipe 2, the fracturing fluid inlet pipe 3 and the sand inlet pipe 2 are respectively arranged on both sides of the device shell 1, the fracturing fluid inlet pipe 3 and the sand inlet pipe 2 are welded into an integrated pipe, and a discharge pipe 19 is arranged at the bottom of the fracturing fluid inlet pipe 3 and the sand inlet pipe 2, the integrated pipe is covered with a stirring tank 13, a guide pipe 12 is arranged on the outer wall of the stirring tank 13, a gear ring 14 is arranged in the middle of the outer wall of the stirring tank 13, a stirring tank 2 6 is arranged below the stirring tank 13, a support shaft 5 passes through the middle of the stirring tank 2 6, and a support shaft 5 is arranged to support the stirring tank 2 6. The two ends of the shaft 5 are connected to the device shell 1. A guide pipe 2 10 is provided on the outer wall of the mixing tank 2 6. A gear ring 2 9 is sleeved in the middle of the outer wall of the mixing tank 2 6. The gear rings 2 9 and 14 are meshed with the gear teeth of the main gear 8. The main gear 8 is connected to the motor 4 through the transmission shaft 7. The guide pipe 1 12 and the guide pipe 2 10 are respectively provided with a solenoid valve 1 11 and a solenoid valve 2 15. A discharge pipe 18 is provided at the bottom of the mixing tank 2 6. The discharge pipe 18 is provided with a solenoid valve 3. The solenoid valve 1 11, the solenoid valve 2 15, the solenoid valve 3 and the motor 4 are respectively connected to the external controller 16 through wires. A part of the discharge pipe 18 is fixed on the device shell 1, and the part of the discharge pipe 18 located in the device shell 1 is an elastic pipe. The guide pipe 1 12 and the guide pipe 2 10 use pipes of the same diameter. The ports of the guide pipe 1 12 and the guide pipe 2 10 match after rotating 180 degrees. Both ends of the mixing tank 1 13 and the mixing tank 2 6 are closed, and sealed bearings are installed at the connection between the mixing tank 1 13 and the mixing tank 2 6 and the integrated pipe and the support shaft 5. The transmission shaft 7 passes through the device shell 1 and is connected to the motor 4, and a sealed bearing is installed at the connection between the transmission shaft 7 and the device shell 1. Flow meters are installed on the fracturing fluid inlet pipe 3 and the sand inlet pipe 2. The outer wall of the integrated pipe located in the mixing tank 13 and the support shaft 5 located in the mixing tank 2 6 are both provided with spiral blades 17.

[0016] Reference Figure 1 and Figure 2 , is the initial state, the port of the guide pipe 1 12 faces upward, and the port of the guide pipe 2 10 faces downward. When the present integrated fracturing fluid mixing and sand mixing automatic device is used, the fracturing fluid enters the device shell 1 through the fracturing fluid inlet pipe 3, and is discharged into the mixing tank 13 through the discharge pipe 19. Fine sand particles are transported to the device shell 1 through the sand particle inlet pipe 2, and are also discharged into the mixing tank 13 through the discharge pipe 19. When the fracturing fluid and sand particles enter, the corresponding flow meter measures the entering amount, so as to achieve the purpose of perfect proportioning of the fracturing fluid and the sand particles.

[0017] The fracturing fluid and sand particles first pass through the mixing tank 13, and the fracturing fluid and sand particles are allowed to blend for a period of time. After the fracturing fluid and sand particles are blended for a period of time, the motor 4 is started through the external controller 16, and the motor 4 drives the transmission shaft 7 connected thereto to transmit, and the transmission shaft 7 drives the main gear 8 thereon to rotate, and the gear teeth of the main gear 8 are meshed with the gear teeth of the ring gear 14 and the ring gear 2 9. When the main gear 8 rotates, the mixing tank 13 and the mixing tank 2 6 rotate in opposite directions, and the rotating mixing tank 13 itself plays the role of oscillating the mixture of the fracturing fluid and the sand particles, and then stirring the mixture. The forward and reverse rotation of the motor 4 is used to achieve the initial stirring of the fracturing fluid and the sand particles. After stirring for a period of time, the motor 4 drives them to rotate 180 degrees from the initial position, referring to Figure 3 After rotating 180 degrees, the port of the material guide pipe 1 12 faces downward, and the port of the material guide pipe 2 10 faces upward. The ports of the material guide pipe 1 12 and the material guide pipe 2 10 are connected and fit together. The corresponding solenoid valve 1 11 and the solenoid valve 2 15 are controlled to open by the external controller 16, so that the mixing tank 1 13 and the mixing tank 2 6 are connected. The preliminarily stirred fracturing fluid and sand mixture in the mixing tank 1 13 completely enters the mixing tank 2 6 through the material guide pipe 1 12 and the material guide pipe 2 10, and the solenoid valve 1 11 and the solenoid valve 2 15 are controlled to close by the external controller 16, and then the mixing tank 1 13 and the mixing tank 2 6 are connected again. The fracturing fluid inlet pipe 3 and the sand inlet pipe 2 convey a new wave of fracturing fluid and fine sand into the mixing tank 13, and the motor 4 is controlled by the external controller 16 to continue to rotate, so that the mixing tank 13 and the mixing tank 2 6 rotate at the same time, and the upper and lower mixing tanks rotate back and forth together. The mixing tank 13 is used to preliminarily mix and stir the new wave of fracturing fluid and sand, and the mixing tank 2 6 is used to further stir the previous wave of fracturing fluid and sand mixture, which not only achieves the purpose of uniform mixing, but also the two mixing tanks operate at the same time, realizing the function of uninterrupted operation and meeting the use requirements.

[0018] After the stirring is completed, the external controller 16 is used to control the electromagnetic valve 3 to open, and the mixture of the fracturing fluid and sand particles in the stirring tank 2 6 is discharged through the discharge pipe 18 for subsequent use.

[0019] The design of the spiral blades 17 also plays a role in stirring the fracturing fluid and the sand particles during the rotation of the mixing tank, thereby mixing the fracturing fluid and the sand particles more evenly.

[0020] In summary, the integrated fracturing fluid mixing and sand mixing automated device is reasonably designed, safe and reliable. The simultaneous rotation of the spiral blades and the two mixing tanks improves the mixing efficiency, mixes the fracturing fluid and sand evenly, and facilitates subsequent use. The use of two mixing tanks realizes continuous operation, and uninterrupted mixing meets the use requirements.

Claims

1. An integrated automated device for fracturing fluid preparation and sand mixing, comprising a device shell (1), a fracturing fluid inlet pipe (3) and a sand inlet pipe (2), wherein the fracturing fluid inlet pipe (3) and the sand inlet pipe (2) are respectively arranged on both sides of the device shell (1), the fracturing fluid inlet pipe (3) and the sand inlet pipe (2) are welded into an integrated pipe, and a discharge pipe (19) is arranged at the bottom of the fracturing fluid inlet pipe (3) and the sand inlet pipe (2), characterized in that: The one-piece pipe sleeve is provided with a stirring tank (13), a material guide pipe (12) is provided on the outer wall of the stirring tank (13), a gear ring (14) is sleeved in the middle of the outer wall of the stirring tank (13), a stirring tank (6) is provided below the stirring tank (13), a support shaft (5) passes through the middle of the stirring tank (6), both ends of the support shaft (5) are connected to the device shell (1), a material guide pipe (10) is provided on the outer wall of the stirring tank (6), a gear ring (9) is sleeved in the middle of the outer wall of the stirring tank (6), and the gear ring (9) and the gear ring (1) are connected. The gear teeth of the first gear (14) are meshed with the gear teeth of the main gear (8), and the main gear (8) is connected to the motor (4) through the transmission shaft (7); the first material guide pipe (12) and the second material guide pipe (10) are respectively provided with a solenoid valve (11) and a solenoid valve (15); the bottom of the second stirring tank (6) is provided with a discharge pipe (18), and the discharge pipe (18) is provided with a solenoid valve (3); the first solenoid valve (11), the second solenoid valve (15), the third solenoid valve and the motor (4) are respectively connected to an external controller (16) through wires.

2. The integrated automated fracturing fluid and sand mixing device according to claim 1, characterized in that: A portion of the discharge pipe (18) is fixed on the device shell (1), and the portion of the discharge pipe (18) located inside the device shell (1) is an elastic pipe.

3. The integrated automated fracturing fluid and sand mixing device according to claim 1, characterized in that: The material guide pipe 1 (12) and the material guide pipe 2 (10) are made of pipes with the same diameter, and the ports of the material guide pipe 1 (12) and the material guide pipe 2 (10) are matched after being rotated 180 degrees.

4. The integrated automated fracturing fluid and sand mixing device according to claim 1, characterized in that: Both ends of the stirring tank 1 (13) and the stirring tank 2 (6) are closed, and sealed bearings are installed at the connection between the stirring tank 1 (13) and the stirring tank 2 (6) and the integrated pipe and the support shaft (5).

5. The integrated automated fracturing fluid and sand mixing device according to claim 1, characterized in that: The transmission shaft (7) passes through the device shell (1) and is connected to the motor (4), and a sealed bearing is installed at the connection between the transmission shaft (7) and the device shell (1).

6. The integrated automated fracturing fluid and sand mixing device according to claim 1, characterized in that: Flow meters are installed on both the fracturing fluid inlet pipe (3) and the sand inlet pipe (2).

7. The integrated automated fracturing fluid and sand mixing device according to claim 1, characterized in that: The integrated tube located in the first stirring tank (13) and the outer wall of the support shaft (5) located in the second stirring tank (6) are both provided with spiral blades (17).

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