Oil-based drilling fluid waste treatment equipment

Abstract

The utility model discloses oil-based drilling fluid waste treatment equipment which comprises a supporting frame and further comprises a flocculation tank, an inner pipe, an outer pipe and an auger which are arranged on the supporting frame, a liquid inlet pipe and a feeding pipe are arranged on the flocculation tank, a stirring assembly is arranged on the flocculation tank, the bottom of the flocculation tank communicates with a liquid conveying pipe, the liquid conveying pipe communicates with the inner pipe, and the inner pipe communicates with the outer pipe. A plurality of filter holes are evenly formed in the inner pipe at intervals, a spiral conveying rod of the auger penetrates into the inner pipe, a discharging pipe is arranged at one end of the inner pipe, and a liquid outlet pipe is arranged at one end of the outer pipe. According to the utility model, not only can the flocculation effect on the drilling fluid waste be improved, but also solid waste and liquid waste in the drilling fluid waste can be effectively separated; meanwhile, the solid waste can be continuously conveyed in the inner pipe, so that the solid waste and the liquid waste can be continuously and stably discharged, workers do not need to manually and regularly clean the solid waste and the liquid waste, the labor intensity of the workers is relieved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling engineering, in particular to an oil-based drilling fluid waste treatment device. Background Art

[0002] With the rapid development of the oil industry, oilfield drilling operations have become an important means of obtaining oil and gas resources. However, the waste generated during the drilling process, especially oil-based drilling fluid waste, has become a major challenge to environmental protection. Oil-based drilling fluid waste mainly consists of oil-based mud, drill cuttings, wastewater, etc. If not properly handled, it will cause serious pollution to groundwater and soil, and even endanger the human living environment. Therefore, it is particularly important to develop efficient and environmentally friendly oil-based drilling fluid waste treatment equipment.

[0003] The applicant retrieved and obtained the following prior art, specifically, the patent with publication number CN220715138U discloses a drilling liquid waste treatment device, including a mounting frame, a filter barrel is fixedly mounted on the upper surface of one end of the mounting frame, a filter plate is fixedly mounted on the inner wall of the filter barrel near the bottom end, and a pressure plate is slidably mounted on the inner wall of the filter barrel near the top end. The utility model drives the crankshaft to drive the crank neck to rotate eccentrically by driving the motor, so that the crank neck drives the pressure rod to move up and down, and the pressure rod drives the pressure plate to move up and down reciprocatingly through the rotating block, and the drilling liquid waste flocculated in the filter barrel is pressed and filtered by the downward movement of the pressure plate, so that the liquid waste is filtered out from the filter holes of the filter plate, and the solid waste is left on the upper surface of the filter plate. Through the downward pressure filtration of the device, the drilling liquid waste flocculated in the filter barrel can be quickly separated into solid and liquid through the filter plate, which speeds up the filtration speed and greatly improves the filtration efficiency.

[0004] It can be seen from the above patent that although the drilling liquid waste treatment device can filter the flocculated drilling liquid waste inside the filter barrel through the downward pressure movement of the pressure plate, realize the rapid solid-liquid separation of the drilling liquid waste, and improve the filtration efficiency, but in actual use, since the solid waste of the drilling liquid waste still remains on the upper surface of the filter plate after the pressure filtration, as the treatment process proceeds, more and more solid waste will accumulate on the upper surface of the filter plate. These undischarged solid wastes are easy to clog the filter holes of the filter plate, thereby failing to ensure the solid-liquid separation effect of the drilling fluid waste; at the same time, the accumulated solid waste also needs to be cleaned regularly, which increases the labor intensity of the staff and reduces work efficiency. Utility Model Content

[0005] The main purpose of the utility model is to provide an oil-based drilling fluid waste treatment device, aiming to solve the problems that the existing oil-based drilling fluid waste treatment equipment is not convenient for discharging solid waste, cannot ensure the solid-liquid separation effect of drilling fluid waste, increases the labor intensity of staff and reduces work efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides an oil-based drilling fluid waste treatment equipment, including a support frame, and also including a flocculation tank, an inner tube, an outer tube and an auger arranged on the support frame, the flocculation tank is provided with a liquid inlet pipe and a feed pipe, the flocculation tank is used to store drilling fluid waste, the flocculation tank is provided with a stirring assembly for stirring flocculant and drilling fluid waste, the bottom of the flocculation tank is connected with a liquid infusion pipe, the liquid infusion pipe passes through the outer tube and is connected with the inner tube, the inner tube is evenly and spacedly provided with a plurality of filter holes along its extension direction, the spiral conveying rod of the auger is penetrated in the inner tube, the end of the inner tube away from the liquid infusion pipe is provided with a feed pipe, and the end of the outer tube away from the liquid infusion pipe is provided with a liquid outlet pipe.

[0007] Preferably, the flocculation tank includes a tank body and a tank cover, the tank cover is detachably connected to the tank body, the stirring assembly includes a driving member, a rotating shaft and a plurality of stirring blades, the driving member is vertically arranged on the tank cover, one end of the rotating shaft is detachably connected to the power output end of the driving member, and the other end of the rotating shaft extends into the tank body, and the plurality of stirring blades are evenly and spaced apart along the extension direction of the rotating shaft.

[0008] Preferably, the stirring assembly further comprises a plurality of scrapers, the plurality of scrapers are evenly spaced along the circumference of the rotating shaft, and the plurality of scrapers are used for pushing and scraping the inner wall of the tank body.

[0009] Preferably, a filter screen is provided in the tank body near the infusion tube, a limiting groove for the rotating shaft to extend into is provided on the filter screen, and an annular flange for placing the filter screen is provided on the inner wall of the tank body.

[0010] Preferably, a plurality of legs are evenly and spaced apart on the outer wall of the tank body along its circumference, and the plurality of legs are detachably connected to the support frame.

[0011] Preferably, sealing covers are detachably installed at the infusion tube, the liquid outlet tube and the material outlet tube.

[0012] Preferably, a plurality of connection seats for detachably connecting to the support frame are arranged on the outer wall of the outer tube at intervals along the extension direction thereof.

[0013] Beneficial effects:

[0014] The utility model discloses an oil-based drilling fluid waste treatment device which can not only improve the flocculation effect on drilling fluid waste, but also can effectively separate solid waste and liquid waste in drilling fluid waste, thereby ensuring the solid-liquid separation effect of the utility model on drilling fluid waste; at the same time, it can also realize the continuous transportation of solid waste in the inner pipe, thereby preventing the inner pipe from being blocked, so that the utility model can continuously and stably discharge solid waste and liquid waste, without the need for manual regular cleaning by staff, thereby reducing the labor intensity of staff and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 This is a structural schematic diagram of an oil-based drilling fluid waste treatment device in a first perspective according to an embodiment of the utility model;

[0017] Figure 2 This is a structural schematic diagram of an oil-based drilling fluid waste treatment device in a second viewing angle according to an embodiment of the utility model;

[0018] Figure 3 It is a top view of an oil-based drilling fluid waste treatment device according to an embodiment of the utility model;

[0019] Figure 4 yes Figure 3 Cross-sectional view at AA in the middle.

[0020] In the figure: 1-support frame; 2-flocculation tank; 3-inner tube; 4-outer tube; 5-auger; 6-liquid inlet pipe; 7-feeding pipe; 8-liquid infusion pipe; 9-filter hole; 10-discharge pipe; 11-discharge pipe; 12-tank body; 13-tank cover; 14-driving member; 15-rotating shaft; 16-stirring blade; 17-scraper; 18-filter screen plate; 19-leg; 20-connecting seat. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] Embodiment 1:

[0028] The utility model provides an oil-based drilling fluid waste treatment device.

[0029] In one embodiment of the utility model, an oil-based drilling fluid waste treatment device includes a support frame 1, and also includes a flocculation tank 2, an inner tube 3, an outer tube 4 and an auger 5 arranged on the support frame 1. The flocculation tank 2 is provided with a liquid inlet pipe 6 and a feed pipe 7. The flocculation tank 2 is used to store drilling fluid waste. The flocculation tank 2 is provided with a stirring assembly for stirring flocculant and drilling fluid waste. The bottom of the flocculation tank 2 is connected with a liquid infusion pipe 8, which passes through the outer tube 4 and is connected with the inner tube 3. The inner tube 3 is evenly and spacedly provided with a plurality of filter holes 9 along its extension direction. The spiral conveying rod of the auger 5 is penetrated in the inner tube 3. The end of the inner tube 3 away from the liquid infusion pipe 8 is provided with a discharge pipe 10, and the end of the outer tube 4 away from the liquid infusion pipe 8 is provided with a liquid outlet pipe 11.

[0030] Specifically, Figures 1 to 4 As shown, in the utility model, a waste oil drilling fluid treatment device is provided with a flocculation tank 2, an inner tube 3, an outer tube 4 and an auger 5 on a support frame 1, that is, the support frame 1 is used as the support structure of the entire device, thereby ensuring that all components are stably installed in a preset position. Furthermore, since a liquid inlet pipe 6 and a feed pipe 7 are provided on the flocculation tank 2, the drilling fluid waste can be automatically input into the flocculation tank 2 by connecting the liquid inlet pipe 6 with an external liquid supply device (existing equipment for conveying drilling fluid waste); at the same time, the staff can add a flocculant into the flocculation tank 2 through the feed pipe 7, and the flocculant promotes the aggregation of suspended particles, colloids, etc. in the drilling fluid waste into larger particles or flocs, so as to perform solid-liquid separation on the drilling fluid waste later, and the drilling fluid waste and the flocculant can be stirred and mixed by the stirring assembly, thereby helping to accelerate the collision and aggregation of particles and form flocs that are easy to separate, so as to ensure that the two are fully mixed and improve the flocculation effect.

[0031] It can be understood that since the bottom of the flocculation tank 2 is connected with a liquid infusion pipe 8, the liquid infusion pipe 8 passes through the outer tube 4 and is connected to the inner tube 3, and the inner tube 3 is evenly and spaced along its extension direction. The spiral conveying rod of the auger 5 is penetrated in the inner tube 3. When the drilling fluid waste after flocculation treatment enters the inner tube 3 through the liquid infusion pipe 8, the auger 5 can transport the drilling fluid waste. In the process of transporting the drilling fluid waste, the liquid waste in the drilling fluid waste flows out through the several filter holes 9 into the outer tube 4 and is discharged from the liquid outlet pipe 11 on the outer tube 4, while the solid waste in the drilling fluid waste is transported to the discharge pipe 10 under the action of the auger 5 and discharged from the discharge pipe 10. The staff can place a collection tank or a connecting pipe connecting the next process equipment at the liquid outlet pipe 11 and the discharge pipe 10, so as to facilitate the further centralized treatment of solid waste and liquid waste. It can be seen that the oil-based drilling fluid waste treatment equipment of the utility model can not only improve the flocculation effect of drilling fluid waste, but also can effectively separate the solid waste and liquid waste in the drilling fluid waste, thereby ensuring the solid-liquid separation effect of the drilling fluid waste of the utility model; at the same time, it can also realize the continuous transportation of solid waste in the inner tube 3 to prevent the inner tube 3 from being blocked, so that the utility model can continuously and stably discharge solid waste and liquid waste, without the need for manual regular cleaning by the staff, thereby reducing the labor intensity of the staff and improving work efficiency.

[0032] In one embodiment, the flocculation tank 2 includes a tank body 12 and a tank cover 13, the tank cover 13 is detachably connected to the tank body 12, the stirring assembly includes a driving member 14, a rotating shaft 15 and a plurality of stirring blades 16, the driving member 14 is vertically arranged on the tank cover 13, one end of the rotating shaft 15 is detachably connected to the power output end of the driving member 14, and the other end of the rotating shaft 15 extends into the tank body 12, and the plurality of stirring blades 16 are evenly and spacedly arranged along the extension direction of the rotating shaft 15. Specifically, as Figures 1 to 4 As shown, the detachable connection between the tank cover 13 and the tank body 12 can be threaded, so that the tank cover 13 can be disassembled and assembled to maintain and clean the drive assembly or the tank body 12. In the actual production process of the utility model, a sealing pad or a sealing ring can be arranged on the edge of the tank cover 13 to ensure the sealing of the tank body 12 in the connected state. Further, since the driving member 14 in the driving assembly is vertically arranged on the tank cover 13, the driving member 14 can be adopted as a motor in the prior art, and one end of the rotating shaft 15 is detachably connected to the power output end of the driving member 14, and the other end extends into the tank body 12, so that the rotating shaft 15 can rotate relative to the tank body 12 under the drive of the driving member 14; at the same time, since a plurality of stirring blades 16 are evenly and spacedly arranged on the rotating shaft 15 along its extension direction, not only can the plurality of stirring blades 16 be synchronously rotated with the rotating shaft 15, but also the drilling fluid waste and flocculant can be fully and evenly stirred by the plurality of stirring blades 16, thereby improving the mixing efficiency and stirring effect.

[0033] In one embodiment, if Figures 1 to 4 As shown, the stirring assembly further includes a plurality of scrapers 17, which are evenly spaced and spaced along the circumference of the rotating shaft 15, and are used to push and scrape the inner wall of the tank body 12. It can be understood that when the rotating shaft 15 rotates under the drive of the driving member 14, the plurality of scrapers 17 abutting against the inner wall of the tank body 12 can rotate synchronously with the rotating shaft 15, so that the plurality of scrapers 17 can push and scrape the inner wall of the tank body 12, and then the drilling fluid waste attached to the inner wall of the tank body 12 can be scraped off and re-rolled into the mixed liquid (drilling fluid waste with flocculant added), thereby improving the mixing efficiency and uniformity; at the same time, when cleaning and maintaining the tank body 12, the scrapers 17 can assist the cleaning liquid or cleaning tools to thoroughly remove the dirt and impurities on the inner wall of the tank body 12, simplifying the cleaning process and improving the cleaning efficiency.

[0034] In one embodiment, a filter screen 18 is disposed in the tank body 12 near the infusion tube 8, a stopper groove is provided on the filter screen 18 for the shaft 15 to extend into, and an annular flange for placing the filter screen 18 is provided on the inner wall of the tank body 12. Specifically, Figure 1 and Figure 4 As shown, the filter screen 18 can intercept larger solid particles or impurities, thereby preventing them from entering the inner tube 3 and causing clogging of the filter hole 9, and the use is reliable; at the same time, the filter screen 18 can perform preliminary filtration on the flocculated drilling fluid waste, so that the drilling fluid waste after preliminary filtration can pass through the filter hole 9 more easily in the subsequent treatment process (when the inner tube 3 performs solid-liquid separation), thereby improving the overall treatment efficiency. Further, the annular flange can provide a stable supporting position for the filter screen 18, so that it can be firmly installed in the tank body 12. In addition, by providing a limiting groove for the rotating shaft 15 to extend into on the filter screen 18, and the shape and size of the limiting groove should match the rotating shaft 15, the end of the rotating shaft 15 away from the driving member 14 can be limited to ensure the rotation stability of the rotating shaft 15, the plurality of clamping plates and the scraper 17.

[0035] In one embodiment, a plurality of legs 19 are evenly and spaced apart on the outer wall of the tank body 12 along its circumference, and the plurality of legs 19 are detachably connected to the support frame 1. Figure 1 As shown, the tank body 12 can be limited and fixed at multiple points by a plurality of legs 19, thereby significantly enhancing the stability of the entire processing equipment during operation, effectively preventing tilting or collapse caused by equipment vibration or external force, and ensuring the safety of the processing process.

[0036] In one embodiment, if Figure 2 and Figure 4As shown, sealing covers can be detachably installed at the infusion tube 8, the liquid outlet tube 11 and the material outlet tube 10. It can be understood that the detachable installation method of the sealing cover can be a sliding / flipping card connection or a threaded connection (the sealing cover is shown in the drawings of the specification as a sliding card connection), so that the staff can open or close the infusion tube 8, the liquid outlet tube 11 and the material outlet tube 10, which is convenient for operation.

[0037] In one embodiment, specifically, Figures 1 to 4 As shown, a plurality of connection seats 20 for detachably connecting to the support frame 1 are arranged at intervals on the outer wall of the outer tube 4 along its extension direction, so that the outer tube 4 can be supported and limited at multiple points, thereby improving the installation stability of the outer tube 4 on the support frame 1.

[0038] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An oil-based drilling fluid waste treatment device, comprising a support frame (1), characterized in that: The invention also comprises a flocculation tank (2), an inner tube (3), an outer tube (4) and an auger (5) arranged on the support frame (1); the flocculation tank (2) is provided with a liquid inlet pipe (6) and a feed pipe (7); the flocculation tank (2) is used to store drilling fluid waste; the flocculation tank (2) is provided with a stirring assembly for stirring flocculant and drilling fluid waste; the bottom of the flocculation tank (2) is connected with a liquid infusion pipe (8); the liquid infusion pipe (8) passes through the outer tube (4) and is connected with the inner tube (3); the inner tube (3) is provided with a plurality of filter holes (9) uniformly and at intervals along its extension direction; the spiral conveying rod of the auger (5) is inserted into the inner tube (3); a discharge pipe (10) is provided at one end of the inner tube (3) away from the liquid infusion pipe (8); and a liquid outlet pipe (11) is provided at one end of the outer tube (4) away from the liquid infusion pipe (8).

2. The oil-based drilling fluid waste treatment equipment according to claim 1, characterized in that: The flocculation tank (2) comprises a tank body (12) and a tank cover (13), wherein the tank cover (13) is detachably connected to the tank body (12), and the stirring assembly comprises a driving member (14), a rotating shaft (15) and a plurality of stirring blades (16), wherein the driving member (14) is vertically arranged on the tank cover (13), one end of the rotating shaft (15) is detachably connected to a power output end of the driving member (14), and the other end of the rotating shaft (15) extends into the tank body (12), and the plurality of stirring blades (16) are evenly and spacedly arranged along the extension direction of the rotating shaft (15).

3. The oil-based drilling fluid waste treatment equipment according to claim 2, characterized in that: The stirring assembly further comprises a plurality of scrapers (17), wherein the plurality of scrapers (17) are evenly spaced along the circumference of the rotating shaft (15), and the plurality of scrapers (17) are used to push and scrape the inner wall of the tank body (12).

4. The oil-based drilling fluid waste treatment equipment according to claim 3, characterized in that: A filter screen plate (18) is arranged in the tank body (12) near the infusion tube (8), the filter screen plate (18) is provided with a limiting groove for the rotating shaft (15) to extend into, and an annular flange for placing the filter screen plate (18) is arranged on the inner wall of the tank body (12).

5. The oil-based drilling fluid waste treatment equipment according to claim 4, characterized in that: A plurality of legs (19) are evenly and spaced apart on the outer wall of the tank body (12) along its circumference, and the plurality of legs (19) are detachably connected to the support frame (1).

6. An oil-based drilling fluid waste treatment equipment according to any one of claims 1 to 5, characterized in that: The liquid infusion pipe (8), the liquid outlet pipe (11) and the material outlet pipe (10) are all detachably provided with sealing covers.

7. An oil-based drilling fluid waste treatment equipment according to any one of claims 1 to 5, characterized in that: A plurality of connection seats (20) for detachably connecting to the support frame (1) are arranged at intervals on the outer wall of the outer tube (4) along its extension direction.

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