Circulating drilling fluid treatment device based on rock debris treatment

Abstract

The utility model discloses a circulating drilling fluid treatment device based on rock debris treatment, which comprises a drilling fluid treatment box, a drilling fluid separator is connected to the outer wall of the drilling fluid treatment box, an inlet is connected to the outer wall of the drilling fluid separator, an air outlet is formed in the top of the drilling fluid separator, and a gas outlet is formed in the outer wall of the drilling fluid separator. A movable plate frame is arranged at the upper end of the drilling fluid treatment box, an additive injection port is formed in one side of the movable plate frame, a separation net is installed in the drilling fluid separator, the bottom of the separation net is connected with an impurity outlet, a connecting pipeline is arranged in the drilling fluid separator, and the bottom of the movable plate frame is connected with a filter screen A, a filter screen B and a filter screen C; according to the circulating drilling fluid treatment device, solid impurities and gas in the drilling fluid can be effectively separated, and the recycling efficiency of the drilling fluid is improved. When drilling fluid passes through the separator, solid impurities are intercepted through the separation net, and gas is discharged through the gas outlet.

Description

Technical Field

[0001] The utility model relates to the field of drilling fluid treatment, in particular to a circulating drilling fluid treatment device based on cuttings treatment. Background Art

[0002] Drilling fluid, also known as drilling mud, is the circulating fluid used during the drilling process. It is a complex mixture of various components whose primary functions during drilling operations include cooling the drill bit, carrying cuttings, balancing formation pressure, and stabilizing the wellbore. Water is the most common liquid component, especially in water-based drilling fluids. It provides good fluidity, allowing the drilling fluid to circulate within the drilling system. Another liquid component is oil, used in oil-based drilling fluids. Oil-based drilling fluids offer excellent lubricity and dampness, making them suitable for use in complex formations, such as shale formations, to prevent hydration and swelling.

[0003] Currently, it is difficult to clean the impurities in the drilling fluid when recycling it, and the treated drilling fluid is difficult to recycle.

[0004] In view of this, research and improvement are carried out on the existing problems, and a circulating drilling fluid treatment device based on cuttings treatment is provided. The device has a reasonable structural design, and additives are added through the injection port. The drilling fluid can be subjected to necessary chemical treatment to meet the specific needs of drilling operations. The purpose is to solve the problem and improve the practical value through this technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a circulating drilling fluid processing device based on cuttings processing.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a circulating drilling fluid treatment device based on rock cuttings processing, comprising a drilling fluid treatment box, a drilling fluid separator is connected to the outer wall of the drilling fluid treatment box, an inlet is connected to the outer wall of the drilling fluid separator, an air outlet is installed on the top of the drilling fluid separator, a movable plate frame is provided at the upper end of the drilling fluid treatment box, an additive injection port is provided on one side of the movable plate frame, a separation net is installed inside the drilling fluid separator, the bottom of the separation net is connected to an impurity outlet, a connecting pipe is provided inside the drilling fluid separator, a filter A, a filter B and a filter C are connected to the bottom of the movable plate frame, a motor housing is installed at the bottom of the drilling fluid treatment box, a variable frequency motor is provided inside the motor housing, a stirring shaft is connected to the top of the variable frequency motor, and a barrier plate is provided on one side of the filter C.

[0007] As a further description of the above technical solution:

[0008] The drilling fluid separator is fixedly connected to the outer wall of the drilling fluid treatment box, the additive injection port is integrally connected to the upper surface of the drilling fluid treatment box, there are two additive injection ports, and the movable plate frame is plugged into the top of the drilling fluid treatment box.

[0009] As a further description of the above technical solution:

[0010] The inlet is integrally connected to the outer wall of the drilling fluid separator, the air outlet is fixedly connected to the top of the drilling fluid separator, the separation net is fixedly installed inside the drilling fluid separator, the separation net is funnel-shaped, the impurity outlet is integrally connected to the bottom of the separation net, and the impurity outlet is connected to the outside world.

[0011] As a further description of the above technical solution:

[0012] The connecting pipe is opened between the drilling fluid separator and the drilling fluid treatment box. The drilling fluid treatment box, the drilling fluid separator and the connecting pipe are connected. The baffle is fixedly installed inside the drilling fluid treatment box. The baffle is arranged between the filter screen C and the stirring shaft.

[0013] As a further description of the above technical solution:

[0014] The filter screens A, B and C are fixedly connected to the bottom of the movable plate frame. The size of the internal holes of the filter screen A is larger than the size of the internal holes of the filter screen B. The size of the internal holes of the filter screen B is larger than the size of the internal holes of the filter screen C.

[0015] As a further description of the above technical solution:

[0016] The motor housing is fixedly mounted on the bottom of the drilling fluid treatment box, the variable frequency motor is fixedly mounted inside the motor housing, the stirring shaft is transmission-connected to one end of the variable frequency motor, and the stirring shaft is rotationally connected to the inside of the drilling fluid treatment box.

[0017] The utility model has the following beneficial effects:

[0018] The circulating drilling fluid treatment device of the present invention can effectively separate solid impurities and gas in the drilling fluid, thereby improving the recycling efficiency of the drilling fluid. When the drilling fluid passes through the separator, the solid impurities are intercepted by the separation net, while the gas is discharged through the outlet.

[0019] Additives are added through the injection port to chemically treat the drilling fluid to meet the specific requirements of the drilling operation. Filters A, B, and C on the movable platen further filter solid particles of varying sizes, ensuring the cleanliness of the drilling fluid. The combination of a variable frequency motor and agitator shaft ensures thorough agitation of the drilling fluid within the treatment tank, preventing solid particle deposition and thus extending the service life of the drilling fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a circulating drilling fluid treatment device based on cuttings treatment proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the interior of a drilling fluid separator of a circulating drilling fluid treatment device based on cuttings treatment proposed in the present invention;

[0022] Figure 3 This is a schematic diagram of the interior of a drilling fluid treatment box of a circulating drilling fluid treatment device based on cuttings treatment proposed by the present invention.

[0023] Legend:

[0024] 1. Drilling fluid treatment box; 2. Drilling fluid separator; 3. Inlet; 4. Air outlet; 5. Movable plate frame; 6. Additive injection port; 7. Separation net; 8. Impurity outlet; 9. Connecting pipe; 10. Filter A; 11. Filter B; 12. Filter C; 13. Motor housing; 14. Variable frequency motor; 15. Agitator shaft; 16. Baffle plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified or limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, or they can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Reference Figure 1-3 The utility model provides an embodiment: a circulating drilling fluid treatment device based on rock cuttings treatment, comprising a drilling fluid treatment box 1, a drilling fluid separator 2 is connected to the outer wall of the drilling fluid treatment box 1, an inlet port 3 is connected to the outer wall of the drilling fluid separator 2, an air outlet 4 is installed on the top of the drilling fluid separator 2, a movable plate frame 5 is provided at the upper end of the drilling fluid treatment box 1, an additive injection port 6 is provided on one side of the movable plate frame 5, a separation net 7 is installed inside the drilling fluid separator 2, the bottom of the separation net 7 is connected to the impurity outlet 8, a connecting pipe 9 is provided inside the drilling fluid separator 2, a filter screen A10, a filter screen B11 and a filter screen C12 are connected to the bottom of the movable plate frame 5, a motor housing 13 is installed at the bottom of the drilling fluid treatment box 1, a variable frequency motor 14 is provided inside the motor housing 13, a stirring shaft 15 is connected to the top of the variable frequency motor 14, and a baffle 16 is provided on one side of the filter screen C12.

[0028] In this utility model, the drilling fluid separator 2 is fixedly connected to the outer wall of the drilling fluid treatment tank 1. The additive injection port 6 is integrally connected to the upper surface of the drilling fluid treatment tank 1. There are two additive injection ports 6. The movable plate frame 5 is plugged into the top of the drilling fluid treatment tank 1, allowing for rapid replacement and adjustment according to different drilling fluid treatment requirements, thereby improving the flexibility and applicability of the device. In addition, the provision of the additive injection port 6 allows operators to easily add and mix additives, ensuring uniformity and efficiency in drilling fluid treatment.

[0029] Furthermore, the inlet 3 is integrally connected to the outer wall of the drilling fluid separator 2, the air outlet 4 is fixedly connected to the top of the drilling fluid separator 2, and the separation net 7 is fixedly installed inside the drilling fluid separator 2. The separation net 7 is funnel-shaped, and the impurity outlet 8 is integrally connected to the bottom of the separation net 7. The impurity outlet 8 is connected to the outside world and can effectively separate solid impurities from liquid in the drilling fluid, ensuring the cleanliness of the drilling fluid. The funnel-shaped separation net 7 design allows solid impurities to be discharged smoothly through the impurity outlet 8, while the liquid flows into the connecting pipe 9 through the mesh of the separation net 7 and then into the drilling fluid treatment box 1. This design not only improves the separation efficiency, but also reduces the possibility of blockage, ensuring the stable operation of the entire drilling fluid treatment system.

[0030] Furthermore, the connecting pipe 9 is opened between the drilling fluid separator 2 and the drilling fluid treatment box 1, and the drilling fluid treatment box 1, the drilling fluid separator 2 and the connecting pipe 9 are connected. The baffle plate 16 is fixedly installed inside the drilling fluid treatment box 1, and the baffle plate 16 is set between the filter screen C12 and the stirring shaft 15. The presence of the baffle plate 16 also ensures that the stirring shaft 15 will not directly contact solid impurities when stirring the drilling fluid, thereby reducing the wear of the stirring shaft. In addition, the setting of the filter screen C12 allows the drilling fluid to be preliminarily filtered before entering the stirring zone, further improving the cleanliness of the drilling fluid. Through such a design, the drilling fluid treatment box 1 can efficiently complete the purification treatment of the drilling fluid, ensuring the smooth progress of the drilling operation.

[0031] Furthermore, filter screens A10, B11, and C12 are fixedly connected to the bottom of the movable plate frame 5. The internal pores of filter screen A10 are larger than those of filter screen B11, and the internal pores of filter screen B11 are larger than those of filter screen C12. This enables multi-stage filtration, filtering from large particles to small particles, ensuring that solid impurities in the drilling fluid are effectively removed. Filter screen A10 first intercepts larger solid particles, reducing the burden on subsequent filters; filter screen B11 further filters medium-sized particles to ensure the cleanliness of the drilling fluid; and filter screen C12 is responsible for capturing the smallest particles, ensuring that the drilling fluid reaches optimal purification. This hierarchical filtration design not only improves filtration efficiency but also extends the service life of the filters, reducing replacement frequency and maintenance costs.

[0032] Furthermore, the motor housing 13 is fixedly mounted at the bottom of the drilling fluid treatment tank 1, the variable frequency motor 14 is fixedly mounted within the motor housing 13, and the stirring shaft 15 is drivingly connected to one end of the variable frequency motor 14. The stirring shaft 15 is rotatably connected within the drilling fluid treatment tank 1, enabling continuous stirring of the drilling fluid, ensuring uniform mixing of the drilling fluid and additives within the treatment tank and preventing the deposition of solid impurities. The variable frequency motor 14 can adjust its speed based on the actual drilling fluid conditions to achieve optimal stirring while saving energy.

[0033] Working principle and usage process:

[0034] When using this circulating drilling fluid processing device, drilling fluid is first injected into drilling fluid separator 2 through inlet 3. Inside the separator, the drilling fluid undergoes initial separation under the action of gravity through separation screen 7. Larger particles of rock debris and impurities are deposited at the bottom of the funnel-shaped structure of separation screen 7 and discharged through impurity outlet 8. Simultaneously, gas in the drilling fluid is discharged through gas outlet 4 to reduce its impact on drilling fluid properties.

[0035] After the initial separation, the drilling fluid flows into the drilling fluid treatment box 1, and the drilling fluid is further finely filtered through the filter screen A10, filter screen B11 and filter screen C12. Due to the decreasing size of the filter screen holes, particles of different sizes can be effectively removed. The filtered drilling fluid finally passes through the baffle plate 16 and enters the top of the stirring shaft 15.

[0036] At this point, an appropriate amount of chemical additives can be added to the drilling fluid through the additive injection port 6 to improve the drilling fluid's properties. After the additives are added, the variable frequency motor 14 is started, and the stirring shaft 15 begins to rotate, thoroughly stirring the drilling fluid to ensure that the additives are evenly dispersed in the drilling fluid, and then returning it to the drilling fluid for recycling.

[0037] The entire treatment process is controlled by the variable frequency motor 14 in the motor housing 13. The stirring speed and filtration efficiency can be adjusted according to actual needs to adapt to different drilling conditions and drilling fluid requirements. Through this circulation treatment method, the use efficiency of drilling fluid and the safety of drilling operations can be significantly improved.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A circulating drilling fluid treatment device based on cuttings treatment, comprising a drilling fluid treatment box (1), characterized in that: The outer wall of the drilling fluid treatment box (1) is connected to a drilling fluid separator (2), the outer wall of the drilling fluid separator (2) is connected to an inlet (3), the top of the drilling fluid separator (2) is provided with an air outlet (4), the upper end of the drilling fluid treatment box (1) is provided with a movable plate frame (5), one side of the movable plate frame (5) is provided with an additive injection port (6), the interior of the drilling fluid separator (2) is provided with a separation net (7), the bottom of the separation net (7) is connected to an impurity outlet The drilling fluid separator (2) is provided with a connecting pipe (9), the bottom of the movable plate frame (5) is connected with a filter screen A (10), a filter screen B (11) and a filter screen C (12), the bottom of the drilling fluid treatment box (1) is installed with a motor housing (13), the interior of the motor housing (13) is provided with a variable frequency motor (14), the top of the variable frequency motor (14) is connected with a stirring shaft (15), and a baffle plate (16) is provided on one side of the filter screen C (12).

2. A circulating drilling fluid treatment device based on cuttings treatment according to claim 1, characterized in that: The drilling fluid separator (2) is fixedly connected to the outer wall of the drilling fluid treatment box (1), the additive injection port (6) is integrally connected to the upper surface of the drilling fluid treatment box (1), the number of the additive injection ports (6) is two, and the movable plate frame (5) is plugged into the top of the drilling fluid treatment box (1).

3. The circulating drilling fluid treatment device based on cuttings treatment according to claim 1, characterized in that: The inlet (3) is integrally connected to the outer wall of the drilling fluid separator (2), the air outlet (4) is fixedly connected to the top of the drilling fluid separator (2), the separation net (7) is fixedly installed inside the drilling fluid separator (2), the separation net (7) is funnel-shaped, the impurity outlet (8) is integrally connected to the bottom of the separation net (7), and the impurity outlet (8) is communicated with the outside.

4. The circulating drilling fluid treatment device based on cuttings treatment according to claim 1, characterized in that: The connecting pipe (9) is opened between the drilling fluid separator (2) and the drilling fluid treatment box (1); the drilling fluid treatment box (1), the drilling fluid separator (2) and the connecting pipe (9) are connected; the baffle plate (16) is fixedly installed inside the drilling fluid treatment box (1); the baffle plate (16) is arranged between the filter screen C (12) and the stirring shaft (15).

5. The circulating drilling fluid treatment device based on cuttings treatment according to claim 1, characterized in that: The filter screen A (10), the filter screen B (11) and the filter screen C (12) are fixedly connected to the bottom of the movable plate frame (5), the size of the internal holes of the filter screen A (10) is larger than the size of the internal holes of the filter screen B (11), and the size of the internal holes of the filter screen B (11) is larger than the size of the internal holes of the filter screen C (12).

6. The circulating drilling fluid treatment device based on cuttings treatment according to claim 1, characterized in that: The motor housing (13) is fixedly mounted on the bottom of the drilling fluid treatment box (1), the variable frequency motor (14) is fixedly mounted inside the motor housing (13), the stirring shaft (15) is transmission-connected to one end of the variable frequency motor (14), and the stirring shaft (15) is rotationally connected to the inside of the drilling fluid treatment box (1).

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