A drain container and its usage method

Abstract

This invention discloses a draining tank and its usage method, relating to the field of solid-liquid separation technology. It includes a tank body, a bottom draining plate, and an end draining plate. The tank body includes a bottom surface, side surfaces, an outer end surface, an inner end surface, an outer end surface baffle, and a liquid outlet. There is a gap between the bottom of the outer end surface and the bottom surface. The outer end surface baffle is sealed and fixed between the bottom of the outer end surface, the bottom surface, and the side surface. The distance from the top of the inner end surface to the top of the side surface is 1 / 3 to 1 / 2 of the side surface height. The distance between the bottom of the inner end surface and the bottom surface is less than 1 / 3 of the side surface height. The end draining plate is installed on the side closest to the outer end surface, and the bottom draining plate is installed between the inner end surface and the end draining plate. The liquid outlet is located below the inner end surface. This invention enables solid-liquid separation of drilling waste using natural ventilation and drainage, solving the technical problems of high production costs, easily broken rock cuttings, easily clogged filter plates, and small single-pass material processing capacity of existing solid-liquid separation equipment.

Description

Technical Field

[0001] This invention relates to the field of solid-liquid separation technology for drilling waste, specifically to a drain tank and its usage method. Background Technology

[0002] During oil drilling using water-based drilling fluids, a large amount of drilling waste, including shale cuttings and waste mud, is generated. To achieve the harmless treatment of drilling cuttings and mud, it is usually necessary to transport the cuttings and mud to land for processing. Before transportation, the liquid in the mixture of cuttings and mud needs to be separated to reduce the water content in the cuttings and mud, which facilitates the subsequent harmless treatment.

[0003] Currently, there are many existing technologies involving solid-liquid separation. For example, patent document CN221788332U discloses a water-based drilling cuttings solid-liquid separation device, which includes a separation box, a compression assembly, and a separation component. Side plates are fixedly installed on both sides of the separation box. This water-based drilling cuttings solid-liquid separation device can place water-stained cuttings inside the separation box and compress the inside of the separation box by moving the compression piston. This can accelerate the removal of water from the cuttings, thereby improving the separation efficiency of the device. However, careful analysis reveals the following technical problems in practical applications: 1. The equipment consumes additional energy during solid-liquid separation, which increases production costs.

[0004] 2. This equipment separates solids and liquids by extrusion, which can easily cause rock fragments to break, clogging the filter plate and increasing the difficulty of subsequent operations.

[0005] 3. Due to the limitations of the equipment's structure, the amount of material that can be processed each time is relatively small. To increase the amount of material processed each time, it is necessary not only to increase the size of the equipment, but also to increase the power of the extrusion equipment and the effective area of ​​the filter plate, etc. Otherwise, the material will not be effectively extruded. Summary of the Invention

[0006] The purpose of this invention is to overcome the aforementioned problems in the prior art and to provide a drain tank and its usage method. This invention features a specific bottom and side drain structure designed within the tank, enabling solid-liquid separation of drilling waste through natural ventilation. The entire separation process does not consume energy, does not cause damage to rock cuttings, is not prone to clogging the filter plate, and can process a large amount of drilling waste at a time. This solves the technical problems of existing solid-liquid separation equipment, such as high production costs, easily broken rock cuttings, easy clogging of filter plates, and small processing capacity per batch.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a draining tank, comprising a tank body, a bottom draining plate, and an end draining plate. The tank body includes a bottom surface, side surfaces, an outer end surface, an inner end surface, an outer end surface baffle, and a liquid outlet. The side surfaces are symmetrically fixed on both sides of the bottom surface along its length. The inner and outer end surfaces are both sealed and fixed between the two side surfaces. The top of the outer end surface is flush with the top of the side surface, and there is a gap between the bottom of the outer end surface and the bottom surface. The outer end surface baffle is sealed and fixed between the bottom of the outer end surface, the bottom surface, and the side surface, and the lower end of the outer end surface baffle is inclined inward towards the tank body. The top of the inner end surface is close to the top of the side surface. The length of the inner end face is 1 / 3 to 1 / 2 of the side height, and the distance between the bottom of the inner end face and the bottom surface is less than 1 / 3 of the side height. The end drain plate is vertically installed inside the tank on the side near the outer end face, and there are gaps between the end drain plate and the outer end face and between the end drain plate and the bottom surface. The bottom drain plate is horizontally installed between the bottom of the inner end face and the bottom of the end drain plate, and there is a gap between the bottom drain plate and the bottom surface. A flow collection area is formed between the bottom drain plate and the bottom surface, and the liquid outlet is located below the inner end face and communicates with the flow collection area.

[0008] The tank body has symmetrical slots, and the end drain plate is fixed to the tank body through the slots.

[0009] The tank body is provided with a support platform at the bottom, and the bottom drainage plate is installed in the tank body through the support platform.

[0010] Both the end drain plate and the bottom drain plate have several evenly arranged elongated drain gaps.

[0011] The drainage gaps on the end drain plate are arranged vertically, while the drainage gaps on the bottom drain plate are arranged horizontally.

[0012] The cross-section of the drainage gap is trapezoidal, and the diameter of the end facing the inside of the tank is smaller, while the diameter of the end facing the outside of the tank is larger.

[0013] The lower end of the outer end baffle is inclined into the tank to below the end drain plate.

[0014] The angle θ between the plane containing the outer end baffle and the end drain plate ranges from 20 to 45 degrees.

[0015] The tank also includes structural beams fixed to the bottom, sides, outer end face and inner end face.

[0016] Secondly, the present invention provides a method of using a draining tank, comprising: Step A: First, place the drain tank on the work site with the inner end facing the sun, and connect the outlet to the liquid collection system; Step B: The drilling waste is piled up inside the tank from the outer end to the inner end, and drained by natural ventilation. The liquid in the drilling waste enters the collection area through the end drain plate and the bottom drain plate, and flows into the liquid collection system through the outlet. Step C: After draining, dig out the separated solid material from the inside out through the notch above the end face of the tank. Step D: Repeat steps B and C until all drilling waste is separated into solid and liquid components.

[0017] The advantages of using this invention are: 1. The present invention uses a bottom drain plate and an end drain plate, which have the advantages of natural drainage, energy saving and environmental protection.

[0018] Because the drilling speed is relatively fast when drilling into the upper formation, a lot of drilling cuttings are generated. At this time, the mud viscosity is low. By accumulating the cuttings from the outer end to the inner end in the tank, natural drainage and ventilation can be achieved, thus achieving solid-liquid separation. This not only saves fuel and power costs, but also avoids the problem of cuttings breaking due to vibration and drying, which would increase the difficulty of subsequent operations. At the same time, it helps to regulate the air humidity around the work site, which is energy-saving and environmentally friendly.

[0019] 2. The present invention adopts a notch design, which has the advantages of being easy to operate and easy to protect from rain.

[0020] The distance between the top of the inner end face of the drain tank and the top of the side face is 1 / 3 to 1 / 2 of the side height. This makes it easy to observe and operate during the loading and excavation of rock cuttings using an excavator. It also facilitates the drainage of rainwater when used for protection in rainy weather, preventing water accumulation on the rain cover.

[0021] 3. The present invention has the advantages of being easy to clean and easy to replace.

[0022] The space between the outer end face baffle at the bottom of the outer end face of the drain tank and the outer end face facilitates rinsing operations. The end drain plate adopts a slot to form a pull-out installation structure, and the bottom drain plate is installed through the support platform for easy replacement. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the drain tank. Figure 2 This is a front view structural diagram of the drain tank; Figure 3 This is a top view of the drainage tank. Figure 4 This is a schematic diagram of the left-side structure of the drain tank; Figure 5 This is a three-dimensional schematic diagram of the drain tank; Figure 6 This is a cross-sectional schematic diagram of the bottom drainage board; Figure 7 A three-dimensional schematic diagram of the drain tank (I); Figure 8 A three-dimensional schematic diagram of the drain tank (II).

[0024] The markings in the diagram are: 1. Tank body, 2. Bottom drain plate, 3. End drain plate; 11. Bottom surface, 12. Side surface, 13. Outer end face, 14. Inner end face, 15. Liquid outlet, 16. Outer end face baffle. Detailed Implementation

[0025] To further understand the present invention, specific embodiments are described below with reference to examples: It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0026] Furthermore, the terms such as "upper," "lower," "front," "back," "middle," "bottom," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0027] Example 1 like Figure 1-8 As shown, the present invention provides a draining tank, which includes a tank body 1, a bottom draining plate 2, and an end draining plate 3. Wherein, The tank 1 has a cuboid structure and includes a bottom surface 11, side surfaces 12, outer end surfaces 13, inner end surfaces 14, outer end surface baffles 16, and a liquid outlet 15. The bottom surface 11, side surfaces 12, outer end surfaces 13, inner end surfaces 14, and outer end surface baffles 16 are all solid structures. The side surfaces 12 are two-sided, symmetrically fixed to both sides of the length of the bottom surface 11. The inner end surface 14 and outer end surface 13 are both sealed and fixed between the two side surfaces 12. The top of the outer end surface 13 is flush with the top of the side surfaces 12, and both are at the same height. There is a gap between the bottom of the outer end surface 13 and the bottom surface 11. The outer end surface baffles 16 are sealed and fixed between the bottom of the outer end surface 13, the bottom surface 11, and the side surfaces 12, with the lower end of the outer end surface baffles 16 inclined inwards towards the tank 1. The distance between the top of the inner end face 14 and the top of the side face 12 is 1 / 3 to 1 / 2 of the height of the side face 12, and the distance between the bottom of the inner end face 14 and the bottom face 11 is less than 1 / 3 of the height of the side face 12.

[0028] The end drain plate 3 is vertically installed inside the tank 1 on the side near the outer end face 13, and there are gaps between the end drain plate 3 and the outer end face 13 and between the end drain plate 3 and the bottom surface 11.

[0029] The bottom drain plate 2 is horizontally installed between the bottom of the inner end face 14 and the bottom of the end drain plate 3, and there is a gap between the bottom drain plate 2 and the bottom face 11.

[0030] A confluence area is formed between the bottom drain plate 2 and the bottom surface 11, and the liquid outlet 15 is located below the inner end face 14 and communicates with the confluence area.

[0031] In practical applications, the liquid in drilling waste is filtered by the end drain plate 3 and the bottom drain plate 2, and can then enter the confluence area and be discharged through the outlet 15.

[0032] It should be noted that the vertical installation of the end drain board 3 includes two structures: vertical installation and installation at a certain angle in the vertical direction. The horizontal installation of the bottom drain board 2 includes two structures: horizontal installation and installation at a certain angle in the horizontal direction. The specific installation can be set according to the actual working conditions to achieve the best drainage effect.

[0033] According to a preferred embodiment of this example, symmetrical slots are provided on the two sides 12 inside the tank body 1. The size of the slot opening is adapted to the thickness of the end drain plate 3. The end drain plate 3 can be formed into a pull-out structure through the slot. The end drain plate 3 can be fixed inside the tank body 1 through the slot, which is convenient for disassembly and replacement.

[0034] According to another preferred embodiment of this example, the bottom of the tank body 1 is provided with a support platform, which serves to support the bottom drain plate 2. The bottom drain plate 2 can be placed directly inside the tank body 1 through the support platform, which facilitates the disassembly and replacement of the bottom drain plate 2.

[0035] According to another preferred embodiment of this example, both the end drain plate 3 and the bottom drain plate 2 have a number of evenly arranged elongated drain gaps. The drain gaps on the end drain plate 3 are arranged vertically, while the drain gaps on the bottom drain plate 2 are arranged horizontally. This allows the liquid in the drilling waste to be discharged more effectively through the drain gaps.

[0036] Furthermore, in order to achieve better drainage effect and avoid clogging of the drainage gaps, it is preferable that the cross-section of the drainage gaps is trapezoidal, and that the diameter of the end facing the inside of the tank 1 is smaller, while the diameter of the end facing the outside of the tank 1 is larger.

[0037] According to an optional embodiment of this invention, the lower end of the outer end face baffle 16 is inclined inwards towards the tank body 1 to below the end drain plate 3. The angle θ between the plane containing the outer end face baffle 16 and the end drain plate 3 ranges from 20 to 45 degrees, but is preferably 30 degrees. In this embodiment, the inclined outer end face baffle 16 facilitates rinsing operations in the space between the outer end face baffle 16 and the outer end face 13, and also prevents solid residue from accumulating at the corner between the outer end face 13 and the bottom surface 11, thus helping to clean the tank body 1 more thoroughly.

[0038] According to an optional embodiment of this invention, the tank body 1 further includes structural beams fixed to the bottom surface 11, side surface 12, outer end surface 13, and inner end surface 14. The structural beams can be arranged horizontally, vertically, or obliquely as needed, and the structural beams can improve the structural strength of the tank body 1. In addition, the inner wall of the side surface 12 of the tank body 1 is preferably black, and the tank body 1, the bottom drain plate 2, and the end drain plate 3 are preferably made of corrosion-resistant and water-repellent materials, such as stainless steel.

[0039] The working principle of this embodiment is as follows: When in use, first place the drain tank on the work site, with its inner end face 14 generally facing the sun. Connect the liquid outlet 15 to the liquid collection system, and then pile the rock cuttings from the outer end face 13 to the inner end face 14 into the tank body 1 for draining. After draining, dig out the rock cuttings from the inner end to the outer end. When it rains, cover the tank body 1 with a rainproof cloth, with the rain collection port located at the inner end. When cleaning is required before moving to the next work site, rinse the tank through the space between the outer end face baffle 16 and the outer end face 13. When the bottom drain plate 2 and the end drain plate 3 need to be replaced, simply pull out the old drain plates one by one and insert the new drain plates.

[0040] As can be seen from the above working principle, this invention has a specific bottom surface 11 and side surface 12 drainage structure designed in the tank 1, so it can use natural ventilation drainage to separate drilling waste into solid and liquid components. The entire separation process does not consume energy, does not cause rock cuttings damage, is not easy to clog the filter plate, and can process a large amount of drilling waste at a time. It has the advantages of good separation effect, low cost, energy saving and environmental protection, and strong practicality, and is especially suitable for the drainage treatment of drilling waste generated during drilling in the upper formation.

[0041] Example 2 Based on Example 1, the present invention provides a method for using a draining tank, the method comprising: Step A: First, place the drain tank on the work site with the inner end face 14 facing the sun, and connect the liquid outlet 15 to the liquid collection system.

[0042] Step B: The drilling waste is piled up in the tank 1 from the outer end face 13 to the inner end face 14 and drained by natural ventilation. The liquid in the drilling waste enters the collection area through the end drain plate 3 and the bottom drain plate 2, and flows into the liquid collection system through the liquid outlet 15.

[0043] Step C: After draining, dig out the separated solid material from the inside out through the notch above the inner end face 14 of the tank body 1.

[0044] Step D: Repeat steps B and C until all drilling waste is separated into solid and liquid components.

[0045] In this embodiment, during use, when it rains, a rainproof cloth can be placed inside the tank 1, with the rain collection port located at the inner end. When cleaning is required before moving to the next work site, rinsing can be performed in the space between the outer end face baffle 16 and the outer end face 13 on the outer side of the bottom. When it is necessary to replace the bottom drain plate 2 and the end drain plate 3, the old drain plates can be pulled out one by one and the new drain plates can be inserted.

[0046] The above description is merely a specific embodiment of the present invention. Any feature disclosed in this specification may be replaced by other equivalent or similar features unless otherwise specified. All features or steps in the disclosed methods or processes may be combined in any way, except for mutually exclusive features and / or steps.

Claims

1. A drain container, characterized in that, The tank includes a tank body (1), a bottom drain plate (2), and an end drain plate (3). The tank body (1) includes a bottom surface (11), a side surface (12), an outer end surface (13), an inner end surface (14), an outer end surface baffle (16), and a liquid outlet (15). The side surface (12) is symmetrically fixed on both sides of the bottom surface (11) along its length. The inner end surface (14) and the outer end surface (13) are both sealed and fixed between the two side surfaces (12). The top of the outer end surface (13) is flush with the top of the side surface (12), and there is a gap between the bottom of the outer end surface (13) and the bottom surface (11). The outer end surface baffle (16) is sealed and fixed between the bottom of the outer end surface (13), the bottom surface (11), and the side surface (12), and the lower end of the outer end surface baffle (16) is inclined toward the inside of the tank body (1). The top of the inner end surface (14) is at a distance of 15 from the bottom surface (11). The length of the top of the side (12) is 1 / 3 to 1 / 2 of the height of the side (12), and the distance between the bottom of the inner end face (14) and the bottom face (11) is less than 1 / 3 of the height of the side (12); the end drain plate (3) is vertically installed inside the tank (1) on the side close to the outer end face (13), and there is a gap between the end drain plate (3) and the outer end face (13) and between the end drain plate (3) and the bottom face (11); the bottom drain plate (2) is horizontally installed between the bottom of the inner end face (14) and the bottom of the end drain plate (3), and there is a gap between the bottom drain plate (2) and the bottom face (11); a confluence area is formed between the bottom drain plate (2) and the bottom face (11), and the liquid outlet (15) is located below the inner end face (14) and communicates with the confluence area.

2. A drain tank according to claim 1, characterized in that: The tank (1) has symmetrical slots, and the end drain plate (3) is fixed inside the tank (1) through the slots.

3. A drain tank according to claim 1, characterized in that: The tank (1) has a support platform at the bottom, and the bottom drain plate (2) is set inside the tank (1) through the support platform.

4. A drain tank according to claim 1, characterized in that: Both the end drain plate (3) and the bottom drain plate (2) have several evenly arranged long strip-shaped drain gaps.

5. A drain tank according to claim 4, characterized in that: The drainage gaps on the end drain plate (3) are arranged vertically, and the drainage gaps on the bottom drain plate (2) are arranged horizontally.

6. A drain tank according to claim 4, characterized in that: The cross-section of the drain gap is trapezoidal, and the diameter of the end facing the inside of the tank (1) is smaller, while the diameter of the end facing the outside of the tank (1) is larger.

7. A drain tank according to claim 1, characterized in that: The lower end of the outer end face baffle (16) is inclined inward toward the tank body (1) to below the end drain plate (3).

8. A drain tank according to claim 1, characterized in that: The angle θ between the plane containing the outer end face baffle (16) and the end drain plate (3) is 20-45 degrees.

9. A drain tank according to claim 1, characterized in that: The tank (1) also includes structural beams fixed on the bottom surface (11), side surface (12), outer end surface (13) and inner end surface (14).

10. A method of using the drain tank according to any one of claims 1-9, characterized in that... include: Step A: First, place the drain tank on the work site with the inner end face (14) facing the sun, and connect the liquid outlet (15) to the liquid collection system; Step B: The drilling waste is piled up from the outer end face (13) to the inner end face (14) in the tank (1), and drained by natural ventilation. The liquid in the drilling waste enters the confluence area through the end drain plate (3) and the bottom drain plate (2), and flows into the liquid collection system through the liquid outlet (15). Step C: After draining, dig out the separated solid material from the inside out through the notch above the inner end face (14) of the tank (1); Step D: Repeat steps B and C until all drilling waste is separated into solid and liquid components.

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