A drilling fluid collection device for use at oil drilling sites

Abstract

This utility model discloses a drilling fluid collection device for oil drilling sites, including a cooling and settling tank, a feed tank, and a solid receiving tank. The solid receiving tank is connected to the side of the feed tank. A detachable movable plate is inclinedly arranged inside the feed tank, and a filter screen is provided on the movable plate. A buffer mechanism is provided above the movable plate, including at least two buffer plates. The two buffer plates are respectively inclined downwards and arranged on two opposite inner walls of the feed tank. The two buffer plates are spaced apart vertically, and their vertical projections completely cover the movable plate. By alternately arranging multiple inclined buffer plates above the movable plate inside the feed tank and ensuring that their projections completely cover the movable plate, the drilling fluid and the solid impurities it carries first impact the buffer plates instead of directly impacting the filter screen on the movable plate. This significantly reduces the instantaneous impact force and momentum of solid impurities on the filter screen, effectively avoiding premature damage and deformation of the filter screen and extending the service life of the core filter components.

Description

Technical Field

[0001] This utility model relates to the technical field of oil drilling fluid separation equipment, and in particular to a drilling fluid collection device for use in oil drilling sites. Background Technology

[0002] Drilling fluid is a general term for various circulating fluids that meet the needs of drilling operations through multiple functions. It is also known as borehole flushing fluid. During drilling, the high-speed friction between the drill bit and the rock generates a large amount of heat. Drilling fluid can carry away the heat, reduce the temperature of the drill bit, and reduce drill bit wear. Drilling fluid can be classified according to its composition into water, mud, clay-free flushing fluid, emulsion, etc. In oil drilling sites, drilling fluid carries solid impurities and other impurities during circulation. Collection devices can effectively collect these drilling fluids containing impurities for subsequent processing and recycling.

[0003] Chinese patent CN218130282U discloses an oil drilling fluid filtration and recovery device, comprising a cooling and settling tank, a connecting pipe, and a feed hopper. The connecting pipe is fixed to the top side of the cooling and settling tank, and the feed hopper is fixed to the top of the connecting pipe. A placement groove is formed at the top of the inner cavity of the connecting pipe, and a support frame is provided in the middle of the placement groove. A filter plate is placed in the middle of the support frame. This device, through a discharge port and a guide plate, allows filtered waste materials such as stones to be discharged into the interior of a collection drawer. This facilitates the settling of the filtered waste materials, allowing drilling fluid adhering to their surface to drip off, facilitating recovery, improving recovery efficiency, and avoiding drilling fluid waste.

[0004] Its structural design has the following problems: there is no shielding structure above the filter plate. When the drilling fluid mixed with impurities falls directly from the discharge port to the filter plate, the impurities carry a large momentum and directly impact the filter plate. After long-term use, the filter screen is easily damaged. Moreover, when it is necessary to clean the collected stones and other impurities, the operators need to manually open and close the collection drawer and carry, pour and clean them, which is labor-intensive. Utility Model Content

[0005] In view of the shortcomings of the prior art, the present invention provides a drilling fluid collection device for oil drilling sites to solve at least one of the above-mentioned technical problems.

[0006] This utility model provides the following technical solution:

[0007] A drilling fluid collection device for oil drilling sites includes a cooling and settling tank, a feed tank, and a solid receiving tank. The feed tank is fixed to the top of the cooling and settling tank, and the solid receiving tank is connected to the side of the feed tank. An outlet and a return outlet are provided between the two. A filter plate is provided inside the solid receiving tank. A detachable movable plate is inclinedly arranged inside the feed tank. A filter screen is provided on the movable plate. The lower end of the movable plate is located at the outlet. A buffer mechanism is provided above the movable plate. The buffer mechanism includes at least two buffer plates. The two buffer plates are respectively inclined downwards and arranged on two opposite inner walls of the feed tank. The two buffer plates are spaced apart vertically, and their vertical projections completely cover the movable plate.

[0008] In one embodiment, the connection between the buffer plate and the inner wall of the feed box is hinged, and a buffer spring is provided between the bottom of the buffer plate and the inner wall of the feed box.

[0009] In one embodiment, the top surface of the buffer plate is provided with a rubber layer.

[0010] In one embodiment, a fixed plate is provided on the movable plate, the fixed plate being disposed along the inclined direction of the movable plate in the middle of the movable plate, and the filter screen is provided on both sides of the fixed plate.

[0011] In one embodiment, the top surface of the buffer plate closest to the movable plate is provided with a guide groove for guiding the flow to the middle region of the outflow end.

[0012] In one embodiment, a mounting plate is provided below the movable plate, the mounting plate is fixed to the inner wall of the feed box, and a buffer is provided between the mounting plate and the movable plate.

[0013] In one embodiment, a rotating shaft parallel to the movable plate is provided below it, a cam is provided on the rotating shaft, a drive motor for driving the rotating shaft to rotate is provided on the outside of the feed box, and a wear-resistant plate that cooperates with the cam is provided at the bottom of the movable plate.

[0014] In one embodiment, the solid receiving box is provided with an electric slag discharge mechanism in the middle. The electric slag discharge mechanism includes a horizontally arranged slag discharge pipe and a spiral pusher plate arranged in the slag discharge pipe. One end of the spiral pusher plate is connected to a slag discharge motor. The bottom of the slag discharge pipe is provided with a filter plate. Below the filter plate is a return pipe connected to the return liquid port. The bottom of the slag discharge pipe near the slag discharge motor is provided with a slag discharge port.

[0015] In one embodiment, a slag discharge chute is provided below the slag discharge port, and the outlet of the slag discharge chute is located on the front side of the cooling and settling box.

[0016] In one embodiment, the solid receiving box is provided with a manifold at the discharge port, and the manifold outlet of the manifold is connected to the slag discharge pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention features multiple inclined buffer plates alternately positioned above the movable plate inside the feed hopper, ensuring that their projections completely cover the movable plate. When drilling fluid and its carried solid impurities fall, they first impact the buffer plates rather than directly impacting the filter screen on the movable plate. This significantly reduces the instantaneous impact force and momentum of solid impurities on the filter screen, effectively preventing premature damage and deformation of the filter screen and extending the service life of the core filter components. Attached Figure Description

[0019] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0020] Figure 1 A schematic diagram of the drilling fluid collection device for oil drilling sites provided by this utility model;

[0021] Figure 2 A partial cross-sectional view of the drilling fluid collection device for oil drilling sites provided by this utility model;

[0022] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0023] Figure 4 This is a schematic diagram of the movable plate structure;

[0024] Figure 5 This is a schematic diagram of a buffer plate with flow channels.

[0025] Figure label:

[0026] 1. Cooling and settling box; 2. Feed box; 3. Solid receiving box; 4. Buffer plate; 4-1. Buffer spring; 4-2. Guide channel; 5. Mounting plate; 6. Buffer component; 7. Movable plate; 7-1. Wear-resistant plate; 8. Fixed plate; 9. Filter screen; 10. Drive motor; 10-1. Rotating shaft; 10-2. Cam; 11. Slag discharge pipe; 12. Return pipe; 13. Filter plate; 14. Spiral pusher plate; 15. Slag discharge motor; 16. Slag discharge port; 17. Slag discharge chute; 18. Combination box. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a joint; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] Example 1

[0035] like Figure 1 and Figure 2 As shown, this utility model provides a drilling fluid collection device for oil drilling sites, including a cooling and settling tank 1, a feed tank 2, and a solid receiving tank 3. The feed tank 2 is fixed to the top of the cooling and settling tank 1, and the two are connected. In this embodiment, to save overall space, the feed tank 2 is set on one side of the top of the cooling and settling tank 1, and the other side is convenient for setting the solid receiving tank 3. To facilitate the reception of drilling fluid, the top of the feed tank 2 is provided with a flared structure. The solid receiving tank 3 is connected to the side of the feed tank 2. The solid receiving tank 3 is used to receive the filtered solid impurities and perform secondary filtration on them, recovering the drilling fluid attached to the surface of the solid impurities. A discharge port and a return port are provided between the feed tank 2 and the solid receiving tank 3. The discharge port is located at the top of the solid receiving box 3, and the return port is located at the bottom of the solid receiving box 3. The bottom of the solid receiving box 3 is provided with a return surface that is inclined towards the return port. The solid receiving box 3 is provided with a filter plate 13. The feed box 2 is provided with a detachable movable plate 7 that is inclined. The movable plate 7 is provided with a filter screen 9. The filter screen 9 filters the drilling fluid and filters out the solid impurities it carries. The filtered drilling fluid falls into the cooling and settling box 1. The solid impurities enter the solid receiving box 3 through the discharge port along the inclined movable plate 7 for secondary filtration.

[0036] like Figure 2 and Figure 3As shown, the lower end of the movable plate 7 is located at the discharge port. A buffer mechanism is provided above the movable plate 7, comprising at least two buffer plates 4. The two buffer plates 4 are respectively inclined downwards and arranged on opposite inner walls of the feed box 2. The two buffer plates 4 are spaced vertically apart, and their vertical projections completely cover the movable plate 7. The drilling fluid collection device for oil drilling sites provided by this utility model, by alternately arranging multiple inclined buffer plates 4 above the movable plate 7 in the feed box 2 and ensuring that their projections completely cover the movable plate 7, ensures that when the drilling fluid and the solid impurities it carries fall, they first impact the buffer plates 4 rather than directly impacting the filter screen 9 on the movable plate 7. This significantly reduces the instantaneous impact force and momentum of solid impurities on the filter screen 9, effectively avoiding premature damage and deformation of the filter screen 9, and extending the service life of the core filter components. Preferably, the flow direction of the buffer plate 4 closest to the movable plate 7 is towards the upper half of the movable plate 7, which allows solid impurities to pass through the movable plate 7 for a longer time, which is more conducive to the filtration and recovery of drilling fluid. In this embodiment, two buffer plates 4 are alternately arranged. In other embodiments, more buffer plates 4 can be alternately arranged as needed and according to the site size to further improve the buffering effect on the falling drilling fluid.

[0037] like Figure 2 and Figure 3 As shown, in some embodiments, the connection between the buffer plate 4 and the inner wall of the feed box 2 is hinged, and a buffer spring 4-1 is provided between the bottom of the buffer plate 4 and the inner wall of the feed box 2. In other embodiments, the buffer plate 4 can also be directly welded to the inner wall of the feed box 2, making installation simpler.

[0038] By setting the buffer plate 4 to be hinged to the feed box 2 and the buffer spring 4-1 between the buffer plate 4 and the feed box 2, the buffer plate 4 can further absorb and dissipate the impact energy when the top surface is impacted by fluid, thus providing a dynamic buffering effect.

[0039] In some embodiments, the top surface of the buffer plate 4 is provided with a rubber layer, which enhances the buffering and energy absorption effect, while reducing impact noise and preventing corrosion of the surface of the buffer plate 4.

[0040] Preferably, the surface of the rubber layer can also be provided with a corrugated structure, which can further enhance the buffering and deceleration effect on the fluid.

[0041] like Figure 4 As shown, in some embodiments, a fixed plate 8 is provided on the movable plate 7. The fixed plate 8 is extended along the inclined direction of the movable plate 7 and is located in the middle of the movable plate 7. Filter screens 9 are provided on both sides of the fixed plate 8.

[0042] In a typical falling fluid, the flow velocity and impact force are highest in the middle of the feed tank 2. By setting a fixed plate 8 in the middle of the movable plate 7, the part of the fluid with the greatest impact force strikes the fixed plate 8 instead of the filter screens 9 on both sides, thus extending the service life of the filter screens 9. Furthermore, by setting the fixed plate 8 along the inclined direction of the movable plate 7 and extending it through the middle of the movable plate 7, solid impurities impacting the fixed plate 8 can be guided through the fixed plate 8 to the outlet and fall into the solid receiving tank 3. Of course, this arrangement will inevitably result in some drilling fluid being directly guided into the solid receiving tank 3. This portion of drilling fluid can return to the feed tank 2 through the filter plate 13, the return surface, and the return port of the solid receiving tank 3. The fixed plate 8 also enhances the overall structural strength of the movable plate 7.

[0043] like Figure 5 As shown, in some embodiments, the top surface of the buffer plate 4 closest to the movable plate 7 is provided with a guide channel 4-2 to guide the flow to the middle area of ​​the outlet end. By providing the guide channel 4-2 to guide the flow to the middle area of ​​the outlet end of the buffer plate 4, the drilling fluid flow can be mainly impacted on the fixed plate 8. After impacting the fixed plate 8, the drilling fluid will splash onto the filter screens 9 on both sides of the fixed plate 8 and be filtered by the filter screens 9, reducing the direct impact on the filter screens 9.

[0044] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, a mounting plate 5 is provided below the movable plate 7. The mounting plate 5 is fixed to the inner wall of the feed box 2, and a buffer 6 is provided between the mounting plate 5 and the movable plate 7. A sliding rod is provided on the mounting plate 5, and sliding holes that cooperate with the sliding rod are provided at the four corners of the movable plate 7. The buffer 6, which is a spring, is sleeved on the sliding rod. By setting the mounting plate 5 and the buffer 6, the installation position of the movable plate 7 is made flexible, which can absorb some of the impact energy of the drilling fluid, further extending the service life of the filter screen 9. Moreover, the movable plate 7 can vibrate, avoiding the filter screen 9 from deteriorating due to mesh blockage after long-term use.

[0045] like Figure 2 and Figure 3As shown, in some embodiments, a rotating shaft 10-1 parallel to the movable plate 7 is provided below it, and a cam 10-2 is provided on the rotating shaft 10-1. A drive motor 10 for driving the rotating shaft 10-1 to rotate is provided on the outside of the feed box 2, and a wear-resistant plate 7-1 that cooperates with the cam 10-2 is provided at the bottom of the movable plate 7. When the drive motor 10 drives the rotating shaft 10-1 to rotate, the cam 10-2 repeatedly contacts and disengages from the wear-resistant plate 7-1, and the movable plate 7 repeatedly rises and falls under the action of the rotating cam 10-2 and its own weight, thereby realizing the vibration of the movable plate 7. Alternatively, the wear-resistant plate 7-1 may not be provided. In this case, the rotating shaft 10-1 needs to be positioned in the middle of the movable plate 7, so that when the protrusion of the cam 10-2 rotates to the top, it contacts the fixed plate 8 in the middle of the movable plate 7, thereby realizing the vibration of the movable plate 7.

[0046] By setting up a drive motor 10, a rotating shaft 10-1, a cam 10-2, and a wear-resistant plate 7-1, the vibration of the movable plate 7 can be achieved, which can remove solid impurities on the movable plate 7 in a timely manner, avoid the efficiency reduction caused by the clogging of the filter screen 9, and ensure the downward flow speed of the drilling fluid.

[0047] Preferably, the inner wall of the feed box 2, the inner wall of the solid receiving box 3, the top surface of the buffer plate 4, and the top surface of the movable plate 7 are all coated with a hydrophobic coating.

[0048] Example 2

[0049] In existing technologies, when it is necessary to clean up the collected solid impurities, operators need to manually open and close the collection drawers and carry, dump, and clean them, which is labor-intensive.

[0050] To solve this problem, such as Figure 1 and Figure 2As shown, the drilling fluid collection device for oil drilling sites provided by this utility model, based on Embodiment 1, further includes an electric slag removal mechanism. The electric slag removal mechanism includes a horizontally arranged slag removal pipe 11 and a spiral pusher plate 14 disposed within the slag removal pipe 11. One end of the spiral pusher plate 14 is connected to a slag removal motor 15, which drives the spiral pusher plate 14 to rotate, thus achieving electric slag removal. A filter plate 13 is provided at the bottom of the slag removal pipe 11, and a return pipe 12 is provided below the filter plate 13. The return pipe 12 connects to a return liquid port, and the bottom of the return pipe 12 has a return surface inclined towards the return liquid port. A slag removal port 16 is provided at the bottom of the slag removal pipe 11 near the end of the slag removal motor 15. A support plate fixed to the top surface of the cooling and settling box 1 is provided at the bottom of the end of the slag removal pipe 11 where the slag removal motor 15 is located. Both the slag removal pipe 11 and the slag removal motor 15 are disposed on the top surface of the cooling and settling box 1. Below the slag discharge port 16 is a slag discharge chute 17, the outlet of which is located in front of the cooling settling box 1. When using the drilling fluid collection device for oil drilling sites provided by this utility model, a waste hopper for transferring solid impurities can be placed below the outlet of the slag discharge chute 17. The solid receiving box 3 has a manifold 18 at the discharge port, and the bottom of the manifold 18 has a converging manifold outlet connected to the slag discharge pipe 11, making it easier for the filtered solid impurities to be guided into the slag discharge pipe 11. The slag discharge motor 15 can be set to run continuously, driving the spiral pusher 14 to rotate continuously to push the solid impurities to the slag discharge port 16 for discharge, eliminating the need for regular cleaning and reducing the workload of personnel. However, in order to save energy and facilitate the sufficient settling of solid impurities in the slag discharge pipe 11 for secondary filtration and drilling fluid recovery, it is best to set the slag discharge motor 15 to an intermittent start mode.

[0051] This invention, by setting up an electric slag discharge mechanism similar to a screw feeder, eliminates the need for manual periodic cleaning of the solid material collection box 3 even during long-term continuous operation of the drilling fluid collection device, thereby reducing the labor intensity of operators and improving the automation level of the device.

[0052] In summary, this invention, by alternately arranging multiple inclined buffer plates 4 above the movable plate 7 inside the feed hopper 2 and ensuring that their projections completely cover the movable plate 7, ensures that when drilling fluid and carried solid impurities fall, they first impact the buffer plates 4 rather than directly impacting the filter screen 9 on the movable plate 7. This significantly reduces the instantaneous impact force and momentum of solid impurities on the filter screen 9, effectively preventing premature damage and deformation of the filter screen 9 and extending the service life of the core filter component. Furthermore, by incorporating an electric slag discharge mechanism similar to a screw feeder, this invention eliminates the need for regular manual cleaning of the solid material receiving box 3 even during long-term continuous operation, reducing the labor intensity of operators and improving the automation level of the device.

[0053] It is worth noting that the control components and modules used in the drive motor 10 and slag discharge motor 15 in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0054] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A drilling fluid collection device for use in oil drilling sites, characterized in that, The device includes a cooling and settling tank, a feeding tank, and a solid receiving tank. The feeding tank is fixed to the top of the cooling and settling tank. The solid receiving tank is connected to the side of the feeding tank, and an outlet and a return outlet are provided between them. A filter plate is provided inside the solid receiving tank. A detachable movable plate is inclinedly arranged inside the feeding tank. A filter screen is provided on the movable plate. The lower end of the movable plate is located at the outlet. A buffer mechanism is provided above the movable plate. The buffer mechanism includes at least two buffer plates. The two buffer plates are respectively inclined downwards and arranged on two opposite inner walls of the feeding tank. The two buffer plates are spaced apart vertically, and their vertical projections completely cover the movable plate.

2. The drilling fluid collection device for oil drilling sites according to claim 1, characterized in that, The connection between the buffer plate and the inner wall of the feed box is hinged, and a buffer spring is provided between the bottom of the buffer plate and the inner wall of the feed box.

3. The drilling fluid collection device for oil drilling sites according to claim 1, characterized in that, The top surface of the buffer plate is provided with a rubber layer.

4. The drilling fluid collection device for oil drilling sites according to claim 1, characterized in that, The movable plate is provided with a fixed plate, which is arranged along the inclined direction of the movable plate in the middle of the movable plate, and the filter screen is provided on both sides of the fixed plate.

5. The drilling fluid collection device for oil drilling sites according to claim 4, characterized in that, The top surface of the buffer plate closest to the movable plate is provided with a flow guide groove that guides the flow to the middle area of ​​the outflow end.

6. The drilling fluid collection device for oil drilling sites according to claim 1, characterized in that, A mounting plate is provided below the movable plate, and the mounting plate is fixed to the inner wall of the feed box. A buffer is provided between the mounting plate and the movable plate.

7. The drilling fluid collection device for oil drilling sites according to claim 6, characterized in that, The movable plate is provided with a rotating shaft parallel to it below, and a cam is provided on the rotating shaft. A drive motor for driving the rotating shaft to rotate is provided on the outside of the feed box, and a wear-resistant plate that cooperates with the cam is provided at the bottom of the movable plate.

8. The drilling fluid collection device for oil drilling sites according to claim 1, characterized in that, The solid receiving box is equipped with an electric slag discharge mechanism in the middle. The electric slag discharge mechanism includes a horizontally arranged slag discharge pipe and a spiral pusher plate arranged in the slag discharge pipe. One end of the spiral pusher plate is connected to a slag discharge motor. The bottom of the slag discharge pipe is equipped with a filter plate. Below the filter plate is a return pipe. The return pipe is connected to the return liquid port. The bottom of the slag discharge pipe near the slag discharge motor is equipped with a slag discharge port.

9. The drilling fluid collection device for oil drilling sites according to claim 8, characterized in that, A slag discharge chute is provided below the slag discharge port, and the outlet of the slag discharge chute is located on the front side of the cooling and settling box.

10. The drilling fluid collection device for oil drilling sites according to claim 8, characterized in that, The solid receiving box is equipped with a manifold at the discharge port, and the manifold outlet of the manifold is connected to the slag discharge pipe.

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