Mixing preparation device for drilling fluid plugging agent

Abstract

The utility model discloses a drilling fluid plugging agent mixing preparation device which comprises a supporting frame and a mixing tank, a top cover is installed on the mixing tank, a stirring assembly extending into the mixing tank is arranged on the top cover in a penetrating mode, and a rotating assembly is arranged on the outer side wall of the stirring assembly. A driving assembly for driving the stirring assembly to move up and down in a reciprocating manner is mounted on the top cover, the driving assembly is connected with the rotating assembly through a transmission belt, so that the stirring assembly can rotate while moving up and down in a reciprocating manner, a feeding assembly is mounted on the top cover in a penetrating manner, and a discharging end of the mixing tank is conical and is provided with a control valve. The stirring device is reasonable in structural design, the stirring rod can move up and down in a reciprocating mode while rotating, raw materials at different depths in the mixing tank are fully stirred and mixed, and the mixing efficiency and the mixing effect of the drilling fluid plugging agent raw materials are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling fluid plugging agent preparation, in particular to a mixing preparation device for the drilling fluid plugging agent. Background Art

[0002] Downhole leakage occurs when working fluids within the wellbore, such as drilling fluid, cement slurry, and workover fluid, enter high-permeability zones, cavities, and natural or induced formation fractures during oil and gas well operations. Whether operating on land or offshore, downhole leakage has long been a common problem associated with oil drilling. Currently, plugging agents are commonly used to address downhole leakage. The preparation of these drilling fluid plugging agents typically requires mixing the raw materials.

[0003] For example, the application document with the publication number: CN217016486U, and the application name: A mixing preparation device for the production of drilling fluid plugging agents, comprising a tank body, a top cover fixedly connected to the upper surface of the tank body, a first motor fixedly connected to the center position of the upper surface of the top cover, and a fixed frame fixedly connected to the output end of the first motor... This application document is prior art relative to the present application. In this application document, the raw materials are stirred and mixed by a first stirring blade and a second stirring blade, but the first stirring blade and the second stirring blade both rotate in the horizontal direction, making it difficult to mix raw materials of different depths, affecting the mixing effect and mixing efficiency of the raw materials. For this reason, we designed a mixing preparation device for drilling fluid plugging agents to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the prior art and to propose a mixing preparation device for a drilling fluid plugging agent, which enables the stirring rod to move back and forth up and down while rotating, so as to fully stir and mix the raw materials at different depths in the mixing tank, thereby ensuring the mixing efficiency and mixing effect.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A mixing and preparation device for a drilling fluid plugging agent comprises a support frame and a mixing tank, wherein a top cover is installed on the mixing tank, a stirring assembly extending into the mixing tank is penetrated by the top cover, a rotating assembly is provided on the outer wall of the stirring assembly, a driving assembly for driving the stirring assembly to move back and forth up and down is installed on the top cover, the driving assembly and the rotating assembly are connected by a transmission belt so that the stirring assembly can move back and forth up and down and rotate at the same time, a feeding assembly is penetrated by the top cover, and the discharge end of the mixing tank is conically arranged and equipped with a control valve.

[0007] Preferably, the stirring assembly includes a stirring rod that is provided on the top cover and extends into the mixing tank, a plurality of stirring blades are fixedly connected to the side wall of the stirring rod, and a disc is fixedly connected to the top of the stirring rod.

[0008] Preferably, the rotating assembly includes a first annular block which is sleeved on the side wall of the stirring rod and rotates coaxially therewith, the outer wall of the first annular block is rectangular, the upper end of the top cover is rotatably connected to a second annular block which is sleeved on the outside of the first annular block, the inner side wall of the second annular block is rectangular and the outer side wall is circular, and the first annular block slides up and down inside the second annular block.

[0009] Preferably, the drive assembly includes a drive motor installed at the upper end of the top cover, the transmission belt is wound between the second annular block and the output shaft of the drive motor, the end of the output shaft of the drive motor is fixedly connected to a push block with an inclined upper surface, and the push block is against the bottom of the disc.

[0010] Preferably, the feed assembly includes a feed funnel installed through the top cover, and a dust cover is pluggably connected to the feed funnel.

[0011] Preferably, a material receiving box is provided below the mixing tank.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the mixing and preparation device of the drilling fluid plugging agent, the raw materials of the drilling fluid plugging agent are added into the mixing tank through the feeding funnel, and the driving motor is started to drive the pushing block to rotate. The driving block cooperates with the gravity of the disc, and the disc can drive the stirring rod to move back and forth up and down. At the same time, under the connection of the transmission belt, the second annular block can drive the first annular block and the stirring rod to rotate, so that the stirring rod rotates and moves back and forth up and down at the same time, and the raw materials at different depths in the mixing tank are fully stirred and mixed, thereby ensuring the mixing efficiency and mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the external three-dimensional structure of a mixing and preparation device for a drilling fluid plugging agent proposed in the present invention;

[0015] Figure 2 for Figure 1 A magnified view of the structure at center A;

[0016] Figure 3 This is a schematic diagram of the main plan structure of a mixing and preparing device for a drilling fluid plugging agent proposed in the present invention;

[0017] Figure 4 This is a schematic diagram of the internal three-dimensional structure of a mixing and preparation device for a drilling fluid plugging agent proposed in the utility model.

[0018] In the figure: 1. Support frame; 2. Mixing tank; 3. Top cover; 4. Stirring rod; 5. Stirring blade; 6. Dust cover; 7. Control valve; 8. Material receiving box; 9. First annular block; 10. Second annular block; 11. Drive motor; 12. Transmission belt; 13. Push block; 14. Disc; 15. Feed funnel. DETAILED DESCRIPTION

[0019] 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 the embodiments.

[0020] Reference Figure 1-Figure 4 A mixing and preparing device for a drilling fluid plugging agent comprises a support frame 1 and a mixing tank 2. A top cover 3 is mounted on the mixing tank 2. A stirring assembly is provided through the top cover 3 and extends into the mixing tank 2. The stirring assembly comprises a stirring rod 4 which is provided through the top cover 3 and extends into the mixing tank 2. The stirring rod 4 can rotate and slide up and down on the top cover 3. A plurality of stirring blades 5 are fixedly connected to the side wall of the stirring rod 4. The stirring rod 4 and the stirring blades 5 can mix the raw materials of the drilling fluid plugging agent in the mixing tank 2 by rotating.

[0021] The outer wall of the stirring assembly is provided with a rotating assembly, which includes a first annular block 9 that is sleeved on the side wall of the stirring rod 4 and rotates coaxially therewith. The outer wall of the first annular block 9 is rectangular, and the upper end of the top cover 3 is rotatably connected to the second annular block 10 that is sleeved on the outer side of the first annular block 9. The inner side wall of the second annular block 10 is rectangular and the outer side wall is circular. The first annular block 9 slides up and down in the second annular block 10. The first annular block 9 is adapted to the second annular block 10, so that when the second annular block 10 rotates, it can drive the first annular block 9 and the stirring rod 4 to rotate, thereby stirring and mixing the raw materials, and the first annular block 9 can also drive the stirring rod 4 to slide up and down in the second annular block 10;

[0022] A driving assembly for driving the stirring assembly to move reciprocatingly up and down is installed on the top cover 3. The driving assembly is connected to the rotating assembly by a transmission belt 12, so that the stirring assembly can rotate while moving reciprocatingly up and down. The driving assembly includes a driving motor 11 installed at the upper end of the top cover 3, and the transmission belt 12 is wound between the second annular block 10 and the output shaft of the driving motor 11. Under the connection action of the transmission belt 12, the second annular block 10 can rotate synchronously with the output shaft of the driving motor 11. The end of the output shaft of the driving motor 11 is fixedly connected to a pushing block 13 with an inclined upper surface. The top of the stirring rod 4 is fixedly connected to a disc 14, and the pushing block 13 is against the bottom of the disc 14. When the driving motor 11 drives the pushing block 13 to rotate, the upper surface of the pushing block 13 is against the bottom of the disc 14, and the gravity of the disc 14 is downward, so that the pushing block 13 can drive the stirring rod 4 to move reciprocating up and down through the disc 14;

[0023] A feeding assembly is installed through the top cover 3, and the feeding assembly includes a feeding funnel 15 installed through the top cover 3. The drilling fluid plugging agent raw materials are conveniently added to the mixing tank 2 through the feeding funnel 15. A dust cover 6 is plugged and connected to the feeding funnel 15. The setting of the dust cover 6 can reduce the entry of external impurities into the mixing tank 2. The discharge end of the mixing tank 2 is conical and is equipped with a control valve 7, which is convenient for discharging the fully mixed raw materials and can control the timing of their discharge. A receiving box 8 is provided under the mixing tank 2. The setting of the receiving box 8 can collect the raw materials discharged from the mixing tank 2.

[0024] The functional principle of this utility model can be explained through the following operation modes:

[0025] In the utility model, when the mixing and preparing device of the drilling fluid plugging agent is in use, the dust cover 6 is opened, the raw materials of the drilling fluid plugging agent are added into the mixing tank 2 through the feeding funnel 15, and the driving motor 11 is started. The driving motor 11 drives the pushing block 13 to rotate. Since the upper end surface of the pushing block 13 is inclined and the pushing block 13 is against the bottom of the disc 14, the rotation of the pushing block 13 cooperates with the gravity of the disc 14, so that the disc 14 can drive the stirring rod 4 to move up and down reciprocatingly. At the same time, under the connection action of the transmission belt 12, the second annular block 10 rotates synchronously with the output shaft of the driving motor 11, and then the second annular block 10 can drive the first annular block 9 and the stirring rod 4 to rotate, so that the stirring rod 4 rotates and moves back and forth up and down at the same time, and the raw materials in the mixing tank 2 are fully stirred and mixed, thereby ensuring mixing efficiency and mixing effect;

[0026] After the mixing is completed, the control valve 7 is opened to discharge the mixed drilling fluid plugging agent into the material receiving box 8. The operation is simple, and the bottom of the mixing tank 2 is conical, which is conducive to the discharge of raw materials.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mixing and preparation device for a drilling fluid plugging agent, comprising a support frame (1) and a mixing tank (2), characterized in that: The mixing tank (2) is provided with a top cover (3), a stirring assembly extending into the mixing tank (2) is provided through the top cover (3), a rotating assembly is provided on the outer wall of the stirring assembly, a driving assembly for driving the stirring assembly to move up and down is provided on the top cover (3), the driving assembly and the rotating assembly are connected by a transmission belt (12), so that the stirring assembly can move up and down and rotate at the same time, a feeding assembly is provided through the top cover (3), and the discharge end of the mixing tank (2) is conical and is provided with a control valve (7).

2. A mixing and preparing device for a drilling fluid plugging agent according to claim 1, characterized in that: The stirring assembly comprises a stirring rod (4) which is provided through the top cover (3) and extends into the mixing tank (2); a plurality of stirring blades (5) are fixedly connected to the side wall of the stirring rod (4); and a disc (14) is fixedly connected to the top of the stirring rod (4).

3. A mixing and preparing device for a drilling fluid plugging agent according to claim 2, characterized in that: The rotating assembly comprises a first annular block (9) which is sleeved on the side wall of the stirring rod (4) and rotates coaxially therewith, the outer side wall of the first annular block (9) being rectangular, the upper end of the top cover (3) being rotatably connected to a second annular block (10) which is sleeved on the outer side of the first annular block (9), the inner side wall of the second annular block (10) being rectangular and the outer side wall being circular, and the first annular block (9) sliding up and down in the second annular block (10).

4. A mixing and preparing device for a drilling fluid plugging agent according to claim 3, characterized in that: The driving assembly comprises a driving motor (11) mounted on the upper end of the top cover (3); the transmission belt (12) is wound between the second annular block (10) and the output shaft of the driving motor (11); the end of the output shaft of the driving motor (11) is fixedly connected to a pushing block (13) with an inclined upper surface, and the pushing block (13) abuts against the bottom of the disc (14).

5. A mixing and preparing device for a drilling fluid plugging agent according to claim 1, characterized in that: The feed assembly comprises a feed funnel (15) which is installed through the top cover (3), and a dust cover (6) is pluggably connected to the feed funnel (15).

6. A mixing and preparing device for a drilling fluid plugging agent according to claim 1, characterized in that: A material receiving box (8) is provided below the mixing tank (2).

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