A stirring tank for producing emulsion type fluid loss additive for drilling fluid

Abstract

The utility model discloses a kind of emulsion loss additive production for drilling fluid with stirring tank, including tank body, the center of tank body top wall is rotatably connected with shaft, the outer surface of shaft is equipped with the stirring piece of uniform distribution, further including auxiliary stirring mechanism;Auxiliary stirring mechanism: it includes rotating shaft, stirring paddle, bevel gear one, vertical plate, rotating column, bevel gear two, bevel gear three and bevel gear four, the top wall of tank body is rotatably connected with the rotating shaft of uniform distribution, the outer surface of rotating shaft is equipped with the stirring paddle of uniform distribution respectively, the upper end of tank body is equipped with the vertical plate of uniform distribution, two adjacent vertical plates are rotatably connected with rotating column respectively, the end of rotating column far from tank body center is fixedly connected with bevel gear two respectively, this emulsion loss additive production for drilling fluid with stirring tank, by the combination of center stirring and edge stirring, stirring is more uniform, avoid easy to produce stirring blind area, shorten the production cycle of emulsion loss additive for drilling fluid.

Description

Technical Field

[0001] This utility model relates to the field of production technology of emulsion-type filtration reducers for drilling fluids, specifically a mixing tank for producing emulsion-type filtration reducers for drilling fluids. Background Technology

[0002] Drilling fluid emulsion filtration reducers are chemical additives existing in emulsion form, specifically designed for drilling fluid systems. Their main function is to effectively control the permeation of water from the drilling fluid into the formation by sealing formation micropores and improving filter cake quality, thereby maintaining wellbore stability and preventing complex downhole conditions. They are typically a mixture of multiple monomers. The polymer microspheres and colloidal particles in the emulsion have a specific particle size distribution, allowing them to directly enter the micropores and fractures of the formation, forming a physical blockage that prevents water molecules from passing through. The polymer molecules in the emulsion adsorb onto clay particles in the drilling fluid, and through the bridging effect of their long molecular chains, make the filter cake particles more compact, reducing the permeability of the filter cake. The mixing tank used in the production of drilling fluid emulsion filtration reducers is a specially designed chemical container equipped with a highly efficient stirring system. Its main function is to provide a controllable and uniform reaction environment for the physical mixing, chemical reaction, and mass and heat transfer processes required for the production of emulsion filtration reducers, ensuring the stability, uniformity, and quality of the final product. In existing mixing tanks for producing emulsion-type filtration reducers for drilling fluids, the raw materials for the emulsion-type filtration reducers for drilling fluids are first injected into the mixing tank, and then a motor drives a rotating shaft to rotate at high speed, which in turn drives the mixing blades to mix the raw materials inside the mixing tank. Existing mixing tanks for producing emulsion-type filtration reducers for drilling fluids have the following problems: when mixing the raw materials for the emulsion-type filtration reducers for drilling fluids, the mixing of the raw materials by a single mixing shaft is uneven, and blind zones are easily generated at the edge of the tank, which prolongs the production cycle of the emulsion-type filtration reducers for drilling fluids. To address this, we propose a mixing tank for producing emulsion-type filtration reducers for drilling fluids. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a mixing tank for the production of emulsion-like filtration reducers for drilling fluids. When mixing the raw materials of the emulsion-like filtration reducers for drilling fluids, the combination of central mixing and edge mixing makes the mixing more uniform, avoids the generation of blind zones in the mixing, and shortens the production cycle of the emulsion-like filtration reducers for drilling fluids, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a stirring tank for producing an emulsion-like filtration reducer for drilling fluid, comprising a tank body, wherein a rotating shaft is rotatably connected to the center of the top wall of the tank body, and uniformly distributed stirring blades are provided on the outer surface of the rotating shaft, and an auxiliary stirring mechanism is also included; Auxiliary stirring mechanism: It includes a rotating shaft, stirring paddle, bevel gear one, vertical plate, rotating column, bevel gear two, bevel gear three, and bevel gear four. The top wall of the tank is rotatably connected to a uniformly distributed rotating shaft. The outer surface of the rotating shaft is provided with uniformly distributed stirring paddles. The upper end of the tank is provided with uniformly distributed vertical plates. A rotating column is rotatably connected between two adjacent vertical plates. A bevel gear two is fixedly connected to the end of the rotating column away from the center of the tank. A bevel gear one is fixedly connected to the upper end of the rotating shaft. The bevel gear one meshes with the vertically adjacent bevel gear two. A bevel gear three is fixedly connected to the end of the rotating column near the center of the tank. A bevel gear four is fixedly sleeved on the upper side of the outer surface of the rotating shaft. Both bevel gear three and bevel gear four mesh with each other. When stirring the raw material of the emulsion-like filtration reducer for drilling fluid, the combination of central stirring and edge stirring makes the stirring more uniform, avoids the generation of stirring blind zones, and shortens the production cycle of the emulsion-like filtration reducer for drilling fluid.

[0005] Furthermore, a control switch is provided on the outside of the tank, and the input terminal of the control switch is electrically connected to an external power source to provide a power connection.

[0006] Furthermore, the upper end of the tank is provided with a protective shell, and bevel gear one, vertical plate, rotating column, bevel gear two, bevel gear three and bevel gear four are all located inside the protective shell for easy protection.

[0007] Furthermore, the upper end of the protective shell is provided with a protective cover, and a worm gear is fixedly sleeved on the upper end of the outer surface of the rotating shaft. A worm is rotatably connected between the front and rear inner walls of the protective cover, and the worm gear and the worm are meshed together to provide a transmission connection.

[0008] Furthermore, the front end of the protective cover is equipped with a motor, the rear end of the motor's output shaft is fixedly connected to the front end of the worm gear, and the input end of the motor is electrically connected to the output end of the control switch to provide rotation drive.

[0009] Furthermore, a feed pipe is provided at the feed inlet on the upper side of the outer surface of the tank body, and a discharge pipe is provided at the discharge outlet at the lower end of the tank body, to facilitate material feeding and discharging.

[0010] Furthermore, a valve is connected in series at the front end of the discharge pipe to facilitate material discharge.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The mixing tank for producing the emulsion-like filtration reducer for drilling fluid has the following advantages: Driven by the motor, the worm gear and meshing worm wheel drive the rotating shaft to stir the agitator blades in the central area of ​​the tank. Driven by the rotating shaft, the fourth bevel gear, through the meshing bevel gear third, causes the rotating column to rotate on the two vertical plates, which in turn causes the second bevel gear and the meshing bevel gear first to drive the rotating shaft and the agitator blade to rotate, thus providing auxiliary stirring of the raw materials in the edge area of ​​the tank. When stirring the raw materials of the emulsion-like filtration reducer for drilling fluid, the combination of central stirring and edge stirring results in more uniform stirring, avoids the formation of blind spots in stirring, and shortens the production cycle of the emulsion-like filtration reducer for drilling fluid. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the front side cross-sectional structure of the present invention; Figure 4 This is an enlarged structural diagram of point A in this utility model.

[0013] In the diagram: 1. Tank body, 2. Feed pipe, 3. Protective shell, 4. Discharge pipe, 5. Valve, 6. Control switch, 7. Rotary shaft, 8. Stirring blade, 9. Auxiliary stirring mechanism, 91. Rotary shaft, 92. Stirring paddle, 93. Bevel gear one, 94. Vertical plate, 95. Rotary column, 96. Bevel gear two, 97. Bevel gear three, 98. Bevel gear four, 10. Protective cover, 11. Worm gear, 12. Worm, 13. Motor. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-4This embodiment provides a technical solution: a mixing tank for producing an emulsion-like filtration reducer for drilling fluid, comprising a tank body 1, a rotating shaft 7 rotatably connected to the center of the top wall of the tank body 1, uniformly distributed stirring blades 8 on the outer surface of the rotating shaft 7, and an auxiliary stirring mechanism 9. A control switch 6 is provided on the outside of the tank body 1, the input end of the control switch 6 being electrically connected to an external power source. A protective cover 10 is provided on the upper end of a protective shell 3. A worm gear 11 is fixedly sleeved on the upper end of the outer surface of the rotating shaft 7. A worm 12 is rotatably connected between the front and rear inner walls of the protective cover 10, and the worm gear 11 and worm 12 are meshed together (the protective cover 10 protects the worm gear 11 and worm 12, etc., transmission components). A motor 13 is provided at the front end of the protective cover 10, and the rear end of the output shaft of the motor 13 is connected to the front end of the worm 12. The motor 13 is fixedly connected to the output of the control switch 6. The feed inlet 2 is provided at the feed port on the upper side of the outer surface of the tank 1, and the discharge pipe 4 is provided at the discharge port at the lower end of the tank 1. A valve 5 is connected in series at the front end of the discharge pipe 4. When stirring the emulsion-like filtration reducer for drilling fluid, the raw material of the emulsion-like filtration reducer for drilling fluid is first injected into the interior of the tank 1 through the feed pipe 2. Then, the motor 13 is operated by controlling the control switch 6. The output shaft of the motor 13 drives the worm gear 12 to rotate. The worm gear 12 drives the rotating shaft 7 to rotate synchronously around the central axis of the top wall of the tank 1 through the meshing worm wheel 11. When the rotating shaft 7 rotates, the stirring blade 8 moves in a circle inside the tank 1 to perform preliminary central area stirring of the filtration reducer raw material in the tank 1. Auxiliary stirring mechanism 9: It includes a rotating shaft 91, a stirring paddle 92, a first bevel gear 93, a vertical plate 94, a rotating column 95, a second bevel gear 96, a third bevel gear 97, and a fourth bevel gear 98. The top wall of the tank 1 is rotatably connected to the evenly distributed rotating shafts 91. The outer surface of the rotating shafts 91 is provided with evenly distributed stirring paddles 92. The upper end of the tank 1 is provided with evenly distributed vertical plates 94. A rotating column 95 is rotatably connected between two adjacent vertical plates 94. The end of the rotating column 95 away from the center of the tank 1 is fixedly connected to the second bevel gear. 96. A bevel gear 93 is fixedly connected to the upper end of the rotating shaft 91. The bevel gear 93 meshes with the vertically adjacent bevel gear 96. A bevel gear 97 is fixedly connected to the end of the rotating column 95 near the center of the tank 1. A bevel gear 98 is fixedly sleeved on the upper side of the outer surface of the rotating shaft 7. The bevel gears 97 mesh with the bevel gears 98. A protective shell 3 is provided at the upper end of the tank 1. The bevel gears 93, 94, 95, 96, 97, and 98 are all located at... Inside the protective shell 3 (which protects bevel gear 1 93, vertical plate 94, rotating column 95, bevel gear 2 96, bevel gear 3 97, and bevel gear 4 98 to prevent transmission components from being contaminated by dust and raw materials, while ensuring safety), bevel gear 4 98 rotates on the outer surface of the rotating shaft 7. Bevel gear 4 98 meshes with bevel gear 3 97, converting the vertical rotational power of the rotating shaft 7 into horizontal rotational power, driving the rotating column 95 to rotate between adjacent vertical plates 94. The rotating column 95 then drives bevel gear 2 96 to rotate, and... The bevel gear 93 meshes with the rotating shaft 91, which is fixed to it. This rotation drives the stirring paddle 92 on the outer surface of the rotating shaft 91 to rotate synchronously, thus assisting in the stirring of the raw material in the edge area of ​​the tank 1. The two work together to create complex convection and shear motion in the drilling fluid emulsion filtration reducer raw material in the tank 1, avoiding uneven mixing of local raw materials and ultimately achieving a uniform dispersion that meets the mixing requirements of the production process. After stirring is completed, valve 5 will be opened, and the stirred raw material will be discharged through discharge pipe 4.

[0016] The working principle of the mixing tank for producing emulsion-like filtration reducers for drilling fluid provided by this utility model is as follows: When mixing the emulsion-like filtration reducer for drilling fluid, the raw material for the emulsion-like filtration reducer for drilling fluid is first injected into the tank body 1 through the feed pipe 2. Then, by controlling the switch 6, the motor 13 is operated. The output shaft of the motor 13 drives the worm gear 12 to rotate. The worm gear 12 drives the rotating shaft 7 to rotate synchronously around the central axis of the top wall of the tank body 1 through the meshing worm wheel 11. When the rotating shaft 7 rotates, the stirring blades 8 make circular motion inside the tank body 1, and perform preliminary central area mixing of the filtration reducer raw material in the tank body 1. The fourth bevel gear 98 rotates on the outer surface of the rotating shaft 7, and the fourth bevel gear 98 meshes with the third bevel gear 97. The vertical rotational power of the rotating shaft 7 is converted into the horizontal rotational power of the rotating shaft 7, which drives the rotating column 95 to rotate between the adjacent vertical plates 94. The rotating column 95 drives the second bevel gear 96 to rotate and mesh with the first bevel gear 93. The rotation of the first bevel gear 93 drives the rotating shaft 91 fixed to it to rotate, which in turn drives the stirring paddle 92 on the outer surface of the rotating shaft 91 to rotate synchronously, and assists in stirring the raw materials in the edge area of ​​the tank 1. The two work together to make the drilling fluid emulsion filtration loss reducer raw materials in the tank 1 form complex convection and shear motion, avoid uneven mixing of local raw materials, and finally achieve a uniform dispersion and a mixing effect that meets the production process requirements. After stirring, the valve 5 will be opened and the stirred raw materials will be discharged through the discharge pipe 4.

[0017] It is worth noting that the motor 13 disclosed in the above embodiments can be a 35BYJ46, and the control switch 6 is provided with a switch button corresponding to the motor 13 and used to control its switching operation.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mixing tank for producing an emulsion-like filtration reducer for drilling fluid, comprising a tank body (1), wherein a rotating shaft (7) is rotatably connected to the center of the top wall of the tank body (1), and uniformly distributed stirring blades (8) are provided on the outer surface of the rotating shaft (7), characterized in that: It also includes an auxiliary stirring mechanism (9); Auxiliary stirring mechanism (9): It includes a rotating shaft (91), a stirring paddle (92), a first bevel gear (93), a vertical plate (94), a rotating column (95), a second bevel gear (96), a third bevel gear (97), and a fourth bevel gear (98). The top wall of the tank (1) is rotatably connected to a uniformly distributed rotating shaft (91). The outer surface of the rotating shaft (91) is provided with uniformly distributed stirring paddles (92). The upper end of the tank (1) is provided with uniformly distributed vertical plates (94). Adjacent vertical plates (94) are rotatably connected to each other. The column (95) and the rotating column (95) are respectively fixedly connected to the end away from the center of the tank (1) with bevel gear 2 (96). The upper end of the rotating shaft (91) is respectively fixedly connected to bevel gear 1 (93). Bevel gear 1 (93) is respectively meshed with the vertically adjacent bevel gear 2 (96). The end of the rotating column (95) close to the center of the tank (1) is respectively fixedly connected to bevel gear 3 (97). The upper side of the outer surface of the rotating shaft (7) is respectively fixedly fitted with bevel gear 4 (98). Bevel gear 3 (97) is meshed with bevel gear 4 (98).

2. The mixing tank for producing an emulsion-like filtration reducer for drilling fluid according to claim 1, characterized in that: The tank (1) is equipped with a control switch (6) on its exterior, and the input end of the control switch (6) is electrically connected to an external power source.

3. The mixing tank for producing an emulsion-like filtration reducer for drilling fluid according to claim 2, characterized in that: The upper end of the tank (1) is provided with a protective shell (3), and the first bevel gear (93), the vertical plate (94), the rotating column (95), the second bevel gear (96), the third bevel gear (97) and the fourth bevel gear (98) are all located inside the protective shell (3).

4. The mixing tank for producing an emulsion-like filtration reducer for drilling fluid according to claim 3, characterized in that: The upper end of the protective shell (3) is provided with a protective cover (10), and the upper end of the outer surface of the rotating shaft (7) is fixedly fitted with a worm gear (11). A worm (12) is rotatably connected between the front and rear inner walls of the protective cover (10), and the worm gear (11) and the worm (12) are meshed together.

5. The mixing tank for producing an emulsion-like filtration reducer for drilling fluid according to claim 4, characterized in that: The front end of the protective cover (10) is provided with a motor (13), the rear end of the output shaft of the motor (13) is fixedly connected to the front end of the worm (12), and the input end of the motor (13) is electrically connected to the output end of the control switch (6).

6. The mixing tank for producing an emulsion-like filtration reducer for drilling fluid according to claim 1, characterized in that: The tank body (1) has a feed pipe (2) at the feed inlet on the upper side of the outer surface and a discharge pipe (4) at the discharge outlet at the lower end of the tank body (1).

7. The mixing tank for producing an emulsion-like filtration reducer for drilling fluid according to claim 6, characterized in that: A valve (5) is connected in series at the front end of the discharge pipe (4).

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