Petroleum drilling fluid additive automatic adding and stirring device

Abstract

The utility model relates to the technical field of stirring devices, in particular to an automatic adding and stirring device for a petroleum drilling fluid additive, which comprises a mixing barrel and a driving rod, a driving rod is mounted in the mixing barrel, a bearing is fixed on the inner wall of the mixing barrel, and the driving rod is fixedly mounted on the mixing barrel through the bearing. According to the utility model, scraping assistance is provided for the inner wall of the tank body in the mixing process by connecting the driving rod with the scraping plate, and the scraping plate is tightly attached to the inner wall of the tank body for scraping, so that cakes or deposits on an adhesive layer can be removed in time, and uniform distribution of materials in the tank body is ensured; materials near the inner wall of the tank body can be better mixed with materials in the central area, insufficient stirring caused by uneven distribution of the materials is avoided, and mixing uniformity is enhanced. Residual drilling fluid auxiliaries on the inner wall of the tank body are effectively scraped off through the scraper, in the follow-up cleaning process, attachment of the residues is reduced, the amount of dirt needing to be treated in the follow-up cleaning process is reduced, and the cleaning difficulty and time are reduced.

Description

Technical Field

[0001] This utility model relates to the field of stirring device technology, and in particular to an automatic stirring device for adding petroleum drilling fluid additives. Background Technology

[0002] Oil drilling is a crucial step in the oil exploration and extraction process. Its main purpose is to create wellbores underground through drilling technology to obtain underground resources such as oil and natural gas. It is one of the core technologies of the petroleum industry and runs through the entire process of oil exploration, development, and production. Oil drilling fluid additives are chemical additives used to optimize the performance of drilling fluids. They can adjust the density, viscosity, filtration loss, and other characteristics of drilling fluids to meet the needs of different drilling conditions. The mixing device for oil drilling fluid additives is an important component of the oil drilling fluid solids control system. It is mainly used to fully mix the drilling fluid additives with the drilling fluid to ensure the stability of the drilling fluid's performance.

[0003] Meanwhile, in existing mixing devices, drilling fluid additives tend to accumulate on the inner wall of the tank during the mixing process, forming lumps or adhering layers. This results in uneven material distribution, insufficient mixing, and affects the overall mixing effect. Furthermore, the accumulated lumps or adhering layers are difficult to clean, requiring more time and effort to clean them later, increasing the difficulty of cleaning and maintenance time. Summary of the Invention

[0004] To overcome the problems of existing mixing devices where drilling fluid additives tend to accumulate on the inner wall of the tank, forming lumps or adhering layers, resulting in uneven material distribution, insufficient mixing, and affecting the overall mixing effect, and where the accumulated lumps or adhering layers are difficult to clean, increasing cleaning difficulty and maintenance time, this utility model provides an automatic addition and mixing device for oil drilling fluid additives.

[0005] The technical solution is as follows: An automatic addition and stirring device for petroleum drilling fluid additives includes a mixing tank and a drive rod; the drive rod is installed inside the mixing tank, and a bearing is fixed to the inner wall of the mixing tank, and the drive rod is fixed to the mixing tank through the bearing; it also includes a cover plate, an arc rod, a discharge pipe, a filter screen, a feeding pipe, a support frame, and a storage tank; several sets of arc rods are circumferentially welded to one end of the drive rod, and a scraper is fixed to the end of the several sets of arc rods away from the drive rod; a water outlet is circumferentially opened inside the drive rod between two sets of arc rods; a cover plate is fastened and sealed to one end of the mixing tank; a drive motor is fixed to the outer wall of the cover plate at one end of the drive rod; a support plate is fixed to the lower end of the drive motor; a sleeve is sleeved between the drive motor and the drive rod; two sets of connectors are fixed to the outer wall of the sleeve; the sleeve passes through the cover plate and communicates with the drive rod.

[0006] Furthermore, a load-bearing frame is fixed to the lower end of the mixing tank, and multiple sets of reinforcing plates are welded inside the load-bearing frame. Two sets of storage tanks are placed at the upper end of the load-bearing frame.

[0007] Furthermore, one end of each of the two sets of storage tanks is connected to a connecting pipe, and a water pump is installed on the outer wall of each set of storage tanks. One end of each water pump is connected to a delivery pipe, and the water pump is fixed to the connector via the delivery pipe.

[0008] Furthermore, one end of the mixing tank is connected to a discharge pipe, and a filter screen is installed inside the discharge pipe. Multiple sets of limiting bolts are provided around the upper end of the filter screen, and the filter screen is fixedly connected to the discharge pipe through the multiple sets of limiting bolts.

[0009] Furthermore, the outer wall of the discharge pipe is equipped with a fixing head, and the discharge pipe is sealed and fixed to the mixing tank through the fixing head. A connecting plate is provided at the end of the discharge pipe away from the mixing tank, and a first solenoid valve is installed on the outer wall of the discharge pipe.

[0010] Furthermore, the upper end of the mixing tank is connected to two sets of feeding pipes, and the outer wall of each set of feeding pipes is equipped with a second solenoid valve. One end of each set of feeding pipes is equipped with a fixing plate.

[0011] Furthermore, a control module is installed on the outer wall of the mixing tank, and the control module is electrically connected to the first solenoid valve and the second solenoid valve.

[0012] Furthermore, both the connecting plate and the fixed plate are welded and fixed to the discharge pipe and the feeding pipe, and the connecting plate and the fixed plate are provided with several sets of positioning holes in the circumferential direction inside.

[0013] The beneficial effects are: This utility model achieves the scraping assistance of the inner wall of the tank during the mixing process by using a drive rod to connect the scraper. The scraper is close to the inner wall of the tank to remove the clumps or deposits in time, ensuring the uniform distribution of materials in the tank. This allows the materials near the inner wall of the tank to be better mixed with the materials in the central area, avoiding insufficient mixing due to uneven material distribution and enhancing the uniformity of mixing.

[0014] By using a scraper to effectively remove drilling fluid additives residues from the inner wall of the tank, the adhesion of residues is reduced during subsequent cleaning, thus reducing the amount of dirt that needs to be treated and lowering the cleaning difficulty and time. Furthermore, the accumulation and uneven distribution of materials on the inner wall of the tank may cause the agitator to experience greater resistance and uneven wear during operation. Timely removal of deposits keeps the inner wall of the tank clean and flat, reducing agitator wear and extending the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an automatic addition and stirring device for petroleum drilling fluid additives.

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the arc-shaped rod in this practical application;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the feeding tube in this practical application;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the discharge pipe in this practical application;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the storage bucket used in this practical application.

[0020] In the attached diagram, the following are the reference numerals: 1. Mixing tank; 2. Cover plate; 3. Drive rod; 4. Arc rod; 5. Scraper; 6. Drive motor; 7. Support plate; 8. Connector; 9. Discharge pipe; 10. Filter screen; 11. Limit bolt; 12. Fixing head; 13. First solenoid valve; 14. Connecting plate; 15. Feeding pipe; 16. Second solenoid valve; 17. Fixing plate; 18. Support frame; 19. Reinforcing plate; 20. Storage tank; 21. Conveying pipe; 22. Control module; 23. Connecting pipe. Detailed Implementation

[0021] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Oil drilling refers to the process of using drilling machinery and tools, and employing drilling technology, to drill through formations to find, evaluate, and develop oil (and natural gas) resources. It is a crucial link in the petroleum industry, directly impacting the efficiency of oil resource exploration, development, and production. Using drilling equipment and technology, the formation is drilled through to form a wellbore, achieving the goal of exploring oil and natural gas resources and developing oil and gas fields. The ultimate goal of oil drilling is to obtain oil and gas resources from the formations, providing a foundation for petroleum industry production. The drilling process must simultaneously consider geological exploration, pressure balancing, and cuttings removal, making it a core link connecting underground oil and gas reservoirs with surface production, highlighting its engineering significance and challenges. The objectives of oil drilling include: finding oil and gas reservoirs: obtaining formation information through drilling to determine the location, scale, and properties of oil and gas reservoirs; assessing oil and gas reserves: evaluating the reserves and quality of oil and gas reservoirs through core samples and fluid samples obtained during drilling; and understanding geological structures: obtaining information such as lithology, thickness, and dip angle of formations during drilling helps in understanding geological structures.

[0023] Development Objectives: Establishing oil and gas production channels: Drilling creates wellbores, providing access for oil and gas extraction; Optimizing oil and gas field development plans: Using data obtained from drilling, optimizing oil and gas field development plans to improve recovery rates; Increasing oil and gas production: Improving oil and gas recovery efficiency through drilling technologies such as horizontal drilling and branch wells. Oil drilling is an extremely important link in the petroleum industry. It not only relates to the exploration and development of oil resources but also directly affects the production efficiency and economic benefits of the petroleum industry. With continuous technological advancements, oil drilling technology is also constantly developing and will become more intelligent, environmentally friendly, and efficient in the future.

[0024] Oil drilling technology is one of the core technologies of the petroleum industry, and with the development of science and technology, drilling technology is constantly advancing. Here are some common drilling techniques: Rotary drilling: The most commonly used drilling method, drilling through the formation by rotating a drill bit; Directional drilling: Drilling horizontal or branch wells by controlling the direction of the drill bit, improving oil and gas recovery; Underbalanced drilling: Maintaining the bottom hole pressure lower than the formation pressure during drilling to reduce damage to the oil and gas reservoir. Drilling tools: Drill bit: The tool used to drill through the formation; the appropriate drill bit is selected according to the formation hardness and type. Drill pipe: The tool connecting the drill bit and the drilling rig, used to transmit rotational force and pressure. Casing: Used to protect the wellbore and prevent wellbore collapse. Drilling fluid technology: Drilling fluid: The fluid used to cool the drill bit, carry drill cuttings, and protect the wellbore. Drilling fluid additives: Various chemical substances are added to improve the performance of drilling fluids, such as density, viscosity, and lubricity. Logging technology: Logging instruments: Used to measure the physical properties of the formation, such as resistivity, porosity, and permeability. Well logging methods: Using well logging data, assess the oil and gas content and quality of the formation.

[0025] Petroleum drilling fluid additives are chemical or natural substances added during drilling operations to optimize drilling fluid performance. Their core function is to regulate the rheological properties, stability, and functionality of drilling fluids through physicochemical means, ensuring a safe and efficient drilling process. Drilling fluid, as the "blood" of drilling, needs to carry cuttings, cool the drill bit, and balance formation pressure. Additives can adjust parameters such as viscosity, density, and lubricity of drilling fluids to meet different operating conditions. Petroleum drilling fluid additives improve the overall performance of drilling fluids through physicochemical modification, covering multiple areas including weighting, filtration loss reduction, lubrication, and inhibition. Automatic addition and stirring devices, through intelligent control and efficient mixing technology, ensure rapid dissolution and uniform distribution of additives, providing technical support for drilling in complex formations.

[0026] The automatic drilling fluid additive addition and mixing device is used in the oil drilling process to automatically add and mix drilling fluid additives. By precisely controlling the amount of additives added and the mixing process, it ensures stable drilling fluid performance, improves drilling efficiency and safety. Primarily used for adding and mixing drilling fluid additives during oil drilling, this device automatically completes the delivery, crushing, mixing, and stirring of additives, while achieving precise additive addition and mixing through a control system. Applications: This device is widely used in oil drilling, automatically adding and mixing various drilling fluid additives to meet the drilling needs of different depths and geological conditions. By precisely controlling the amount of additives added and the mixing process, it improves drilling fluid performance and reduces accidents such as stuck pipe and blowouts during drilling. Offshore Drilling: The offshore drilling environment is complex. The automated and intelligent design of this device enables stable operation in harsh environments. Its compact design facilitates installation on offshore drilling platforms and adapts to the marine environment. Through its efficient, precise, and automated functions, the automatic drilling fluid additive addition and mixing device provides important technical support to the oil drilling industry, significantly improving drilling efficiency and safety.

[0027] like Figures 1-5 As shown, an automatic addition and stirring device for oil drilling fluid additives includes a mixing tank 1 and a drive rod 3. The drive rod 3 is installed inside the mixing tank 1, and a bearing is fixed to the inner wall of the mixing tank 1. The drive rod 3 is fixed to the mixing tank 1 through the bearing. It also includes a cover plate 2, an arc-shaped rod 4, a discharge pipe 9, a filter screen 10, a feeding pipe 15, a support frame 18, and a storage tank 20. Several sets of arc-shaped rods 4 are circumferentially welded to one end of the drive rod 3. A scraper 5 is fixed to the end of the sets of arc-shaped rods 4 away from the drive rod 3. A water outlet hole is circumferentially opened inside the drive rod 3 between two sets of arc-shaped rods 4. The cover plate 2 is fastened and sealed to one end of the mixing tank 1. One end of the drive rod 3 is fixed to the outer wall of the cover plate 2. The lower end of the drive rod 6 is fixed to the support plate 7. A sleeve is provided between the drive rod 6 and the drive rod 3. Two sets of connectors 8 are fixed to the outer wall of the sleeve. The sleeve passes through the cover plate 2 and is connected to the drive rod 3. The lower end of the mixing tank 1 is fixed to the load-bearing frame 18. Multiple sets of reinforcing plates 19 are welded inside the load-bearing frame 18. Two sets of storage tanks 20 are placed on the upper end of the load-bearing frame 18. One end of the two sets of storage tanks 20 is connected to the connecting pipe 23. A water pump is installed on the outer wall of the two sets of storage tanks 20. A delivery pipe 21 is installed on one end of the water pump. The water pump is connected to the connector 8 through the delivery pipe 21.

[0028] Please see Figures 2-4One end of the mixing tank 1 is connected to a discharge pipe 9. A filter screen 10 is installed inside the discharge pipe 9. Multiple sets of limiting bolts 11 are circumferentially provided on the upper end of the filter screen 10. The filter screen 10 is fixedly connected to the discharge pipe 9 through the multiple sets of limiting bolts 11. A fixing head 12 is provided on the outer wall of the discharge pipe 9. The discharge pipe 9 is sealed and fixed to the mixing tank 1 through the fixing head 12. A connecting plate 14 is provided on the end of the discharge pipe 9 away from the mixing tank 1. A first solenoid valve 13 is installed on the outer wall of the discharge pipe 9. Two sets of feeding pipes 15 are connected to the upper end of the mixing tank 1. A second solenoid valve 16 is installed on the outer wall of both sets of feeding pipes 15. A fixing plate 17 is provided on one end of both sets of feeding pipes 15.

[0029] Please see Figures 3-5 The outer wall of the mixing tank 1 is equipped with a control module 22, which is electrically connected to the first solenoid valve 13 and the second solenoid valve 16. The connecting plate 14 and the fixed plate 17 are both welded and fixed to the discharge pipe 9 and the feeding pipe 15. Several sets of positioning holes are circumferentially opened inside the connecting plate 14 and the fixed plate 17.

[0030] When mixing in mixing tank 1, the drilling fluid additive delivery pipeline is first connected to the feed pipe via fixed plate 17. After the delivery pipeline is connected and installed, the discharge pipe 9 is connected to the device using connecting plate 14. The control module 22 is used to sequentially control the first solenoid valve 13 and the second solenoid valve 16 to close, preventing accidental opening. After the discharge pipe 9 is connected and installed, the control module 22 controls the second solenoid valve 16 to open, adding the required drilling fluid additive into the mixing tank 1, achieving automatic feeding. The drive motor 6 is started, connected to the drive rod 3, to drive several sets of arc rods 4 to stir and mix the liquid. During the mixing process, the arc rod 4 can connect to the scraper 5 to provide scraping assistance to the inner wall of the tank during the mixing process. The scraper 5 is used to scrape the inner wall of the tank in close contact with the inner wall to remove lumps or deposits in time, ensuring the uniform distribution of materials in the tank. This allows the materials near the inner wall of the tank to be better mixed with the materials in the central area, avoiding insufficient mixing due to uneven material distribution. According to the mixing time preset by the control module 22, the drive motor 6 is turned off and the first solenoid valve 13 is opened to discharge the liquid mixed according to the preset time through the discharge pipe 9, realizing the fully automatic feeding and mixing of drilling fluid additives.

[0031] When cleaning the mixing tank 1 is required, the storage tank 20 containing the cleaning solution is first moved to the inside of the support frame 18. After connecting the delivery pipe 21 to the water pump, the connector 8 is connected. The water pump is started to inject the cleaning solution into the drive rod 3 through the delivery pipe 21 and discharge it through the outlet hole. At the same time, the drive motor 6 is started to drive the drive rod 3 to rotate. The scraper 5 is used to effectively scrape off the drilling fluid additives remaining on the inner wall of the tank. Combined with the auxiliary rinsing of the cleaning solution, the adhesion of residues is reduced during the cleaning process, reducing the amount of dirt that needs to be treated in subsequent cleaning. Timely removal of impurities and dirt can reduce the accumulation and uneven distribution of materials on the inner wall of the tank, which leads to wear on the agitator. This keeps the inner wall of the tank clean and flat, reduces wear on the agitator, and extends the service life of the equipment.

[0032] The above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic addition and stirring device for petroleum drilling fluid additives, characterized in that, It includes a mixing tank (1) and a drive rod (3); the drive rod (3) is installed inside the mixing tank (1), and a bearing is fixed to the inner wall of the mixing tank (1). The drive rod (3) is fixed to the mixing tank (1) through the bearing. It also includes a cover plate (2), an arc rod (4), a discharge pipe (9), a filter screen (10), a feeding pipe (15), a support frame (18), and a storage tank (20). Several sets of arc rods (4) are welded circumferentially to one end of the drive rod (3), and the several sets of arc rods (4) are far away from the drive rod (3). A scraper (5) is fixed at one end. The inside of the drive rod (3) is circumferentially opened between two sets of arc rods (4). One end of the mixing tank (1) is sealed with a cover plate (2). One end of the drive rod (3) is fixed with a drive motor (6) on the outer wall of the cover plate (2). The lower end of the drive motor (6) is fixed with a support plate (7). A sleeve is sleeved between the drive motor (6) and the drive rod (3). Two sets of connectors (8) are fixed on the outer wall of the sleeve. The sleeve passes through the cover plate (2) and is connected to the drive rod (3).

2. The automatic addition and stirring device for petroleum drilling fluid additives according to claim 1, characterized in that, The lower end of the mixing tank (1) is fixed with a load-bearing frame (18), and multiple sets of reinforcing plates (19) are welded inside the load-bearing frame (18). Two sets of storage tanks (20) are placed on the upper end of the load-bearing frame (18).

3. The automatic addition and stirring device for petroleum drilling fluid additives according to claim 2, characterized in that, Two sets of storage tanks (20) are connected to a connecting pipe (23) at one end. A water pump is installed on the outer wall of the two sets of storage tanks (20). A delivery pipe (21) is installed at one end of the water pump. The water pump is connected and fixed to the connector (8) through the delivery pipe (21).

4. The automatic addition and stirring device for petroleum drilling fluid additives according to claim 1, characterized in that, One end of the mixing tank (1) is connected to a discharge pipe (9), and a filter screen (10) is installed inside the discharge pipe (9). Multiple sets of limiting bolts (11) are provided around the upper end of the filter screen (10), and the filter screen (10) is fixedly connected to the discharge pipe (9) through multiple sets of limiting bolts (11).

5. The automatic addition and stirring device for petroleum drilling fluid additives according to claim 4, characterized in that, The outer wall of the discharge pipe (9) is provided with a fixing head (12), and the discharge pipe (9) is sealed and fixed to the mixing tank (1) through the fixing head (12). The end of the discharge pipe (9) away from the mixing tank (1) is provided with a connecting plate (14), and the outer wall of the discharge pipe (9) is equipped with a first electromagnetic valve (13).

6. The automatic addition and stirring device for petroleum drilling fluid additives according to claim 5, characterized in that, The upper end of the mixing tank (1) is connected to two sets of feeding pipes (15). The outer walls of the two sets of feeding pipes (15) are equipped with second solenoid valves (16), and one end of the two sets of feeding pipes (15) is provided with a fixed plate (17).

7. The automatic addition and stirring device for petroleum drilling fluid additives according to claim 6, characterized in that, A control module (22) is installed on the outer wall of the mixing tank (1), and the control module (22) is electrically connected to the first solenoid valve (13) and the second solenoid valve (16).

8. The automatic addition and stirring device for petroleum drilling fluid additives according to claim 7, characterized in that, Both the connecting plate (14) and the fixed plate (17) are welded and fixed to the discharge pipe (9) and the feeding pipe (15). Several sets of positioning holes are provided in the circumferential direction inside the connecting plate (14) and the fixed plate (17).

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