Drilling fluid desanding device

Abstract

The utility model relates to the technical field of well drilling, and discloses a drilling fluid desanding device which comprises a base. The left side of the top of the fixed box is provided with the fixed box used for feeding, and the bottom of the outer wall of the fixed box is provided with a discharging port used for discharging; the filtering assembly internally comprises a coarse screen and a fine screen which are used for coarse filtration and fine filtration, the coarse screen is obliquely arranged at the top of the inner wall of the fixing box, the fine screen is arranged at the bottom of the inner wall of the fixing box, and a collecting assembly used for collecting silt is arranged at the top of the base and is arranged on the right side of the fixing box; a collecting box and a collecting frame are arranged in the collecting assembly; and a cleaning assembly. By means of the cleaning assembly, impurities accumulated on the coarse screen and impurities blocked in the filter holes can be cleaned, the situation that the impurities are accumulated on the coarse screen, need to be cleaned manually and are very inconvenient is avoided, and the situation that the filter holes are blocked by the impurities and the filter efficiency of the coarse screen is affected can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling, in particular to a drilling fluid desanding device. Background Art

[0002] The work of drilling a hole in the formation from the ground using mechanical equipment or manpower is called drilling. It usually refers to the project of drilling wellbores and large-diameter water supply wells for exploring or developing liquid and gaseous minerals such as oil and natural gas. Drilling is widely used in the national economic construction. Rotary drilling is widely used in oil (gas) fields. The main equipment includes derrick, operating platform, diesel engine, drilling rig, drill string, mud pump, generator, testing equipment, fuel oil tank, boiler, etc.

[0003] After retrieval, the application number "202022056709.7" discloses a drilling fluid desilting and desanding device, including a base. A fixed box is fixedly connected to the top of the base. A box door is provided on the fixed box. A liquid inlet pipe is provided on the top of the fixed box. A coarse screen is fixedly connected to one inner wall of the fixed box. A collection box is fixedly connected to one side of the fixed box. One end of the coarse screen extends into the collection box. A collection frame is fixedly connected to the top of the base. A discharge pipe is hermetically fixedly connected to the bottom of the collection box. An electromagnetic valve is provided on the discharge pipe. The beneficial effects of the utility model are as follows: The structure of the utility model is reasonable and the operation is simple. The coarse screen can preliminarily filter the mud and sand to prevent the fine screen from being blocked. Through the secondary filtration of the fine screen, the mud and sand in the drilling fluid can be removed more thoroughly. Moreover, the fine screen reciprocates to prevent the fine screen from being blocked by mud and sand, which is convenient to use.

[0004] When this technical solution is in use, impurities are likely to accumulate on the coarse filter screen after being filtered by the coarse filter screen, making it difficult to fall, and blocking the falling impurities, resulting in the accumulation of impurities, which requires manual cleaning, which is very inconvenient. Moreover, when the impurities pass through the filter holes, they are easily blocked in the filter holes, resulting in the raw material being unable to pass through the filter holes, affecting its filtration efficiency.

[0005] Therefore, we propose a drilling fluid desanding device. Content of the Utility Model

[0006] The utility model mainly solves the technical problem that the desanding equipment is difficult to clean, and provides a drilling fluid desanding device.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme. A drilling fluid desanding device includes

[0008] a base;

[0009] a fixed box. A fixed box for feeding is arranged on the left side of the top of the fixed box. A discharge port for discharging is arranged at the bottom of the outer wall of the fixed box;

[0010] Filter component, inside which there are a coarse screen and a fine screen for coarse filtration and fine filtration. The coarse screen is inclined and arranged at the top of the inner wall of the fixed box, and the fine screen is arranged at the bottom of the inner wall of the fixed box. And a collection component for collecting sediment is provided at the top of the base, and the collection component is arranged at the right side position of the fixed box. The collection component includes a collection box and a collection frame;

[0011] Cleaning component, inside which there are a scraper and a driving part for driving the scraper to move. The driving part includes an adjusting screw rod and a limiting slider. A cleaning part for cleaning the filter holes of the coarse screen is arranged inside the scraper, and the cleaning part includes a first return spring, a dredging rod and bristles.

[0012] Furthermore, limiting sliding grooves are opened at both ends of the inner wall of the fixed box at the top of the coarse screen. The adjusting screw rod is rotationally connected to the inner wall of the limiting sliding groove through a motor, and the limiting slider is slidably connected to the inner wall of the limiting sliding groove. A through threaded hole is opened in the limiting slider, and the adjusting screw rod is threadedly connected to the threaded hole in the limiting slider. The scraper is fixedly connected to the outer walls of the opposite sides of the two limiting sliders.

[0013] Furthermore, scraping grooves are opened at both bottom ends of the scraper. A first guiding groove is opened at the top of the side of the scraper close to the collection box, and a second guiding groove is opened at the top of the side of the scraper far from the collection box. The first guiding groove is communicated with the scraping groove, and the second guiding groove is communicated with the scraping groove. The second guiding groove is communicated with the top of the first guiding groove. The scraping groove and the first guiding groove are concave, and the second guiding groove is convex.

[0014] Furthermore, the collection box is fixedly connected to the right side position of the outer wall of the fixed box and is communicated with the tail end of the coarse screen. A through hole for discharging materials is arranged at the bottom of the collection box, and the collection frame is arranged at the bottom position of the through hole on the collection box.

[0015] Furthermore, a plurality of linearly arranged through grooves are opened at the axis position of the filter holes of the coarse screen on the inner wall of the scraper. The dredging rod is slidably connected to the inner wall of the through groove, and the first return spring is fixedly connected to the opposite wall surfaces of the dredging rod and the through groove.

[0016] Furthermore, the top end of the dredging rod is cylindrical, the bottom of the dredging rod is a frustum of a cone shape with both ends of the cross section being arc-shaped, and the bristles are arranged at the bottom of the dredging rod.

[0017] Furthermore, a plurality of circumferentially arranged sliding grooves are opened at the bottom of the inner wall of the through groove. A scraping block is slidably connected to the inner wall of the sliding groove. A second return spring is arranged on the opposite wall surfaces of the scraping block and the sliding groove. One end of the scraping block close to the axis of the through groove is convex.

[0018] Beneficial effects

[0019] The utility model provides a drilling fluid desanding device. It has the following beneficial effects:

[0020] (1). The sand removal device for drilling fluid can clean the impurities accumulated on the coarse screen and the impurities blocked in the filter holes through the set cleaning component, avoiding the accumulation of impurities at the coarse screen, which requires manual cleaning and is very inconvenient. Moreover, it can prevent the filter holes from being blocked by impurities, thus affecting the filtering efficiency of the coarse screen.

[0021] (2). The sand removal device for drilling fluid, through the set scraping groove, first guiding groove and second guiding groove, with the concave design of the scraping groove, can reduce the contact area between the scraper and the coarse screen, thereby increasing the pressure and improving the scraping effect of the impurities on the coarse screen. And when moving towards the collection box, through the concave surface of the first guiding groove, the scraped impurities can be retained in the concave surface formed by the scraping groove and the first guiding groove. When moving away from the collection box, through the convex design of the second guiding groove, the scraped impurities can be moved along the second guiding groove to the other end of the scraper, facilitating the discharging of the impurities.

[0022] (3). The sand removal device for drilling fluid, through the set second reset spring and scraping block, when the dredging rod returns to the through groove, the impurities adhered to the bristles on the dredging rod can be scraped off by the scraping block, avoiding the impurities entering the through groove along with the bristles, which may cause the dredging rod to get stuck in the through groove and be difficult to fall, thus affecting the cleaning of the filter holes. Brief Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 of the present invention Figure 1 is an enlarged view of part A;

[0025] Figure 3 is a detailed view of the scraper of the present invention;

[0026] Figure 4 is a cross-sectional view of the scraper of the present invention;

[0027] Figure 5 is a cross-sectional view of the scraper in the second embodiment of the present invention.

[0028] Legend Explanation: 1. Base; 2. Fixed box; 3. Feed inlet; 4. Discharge outlet; 5. Coarse screen; 6. Fine screen; 7. Collection box; 8. Collection frame; 9. Limit sliding groove; 10. Adjusting screw rod; 11. Limit sliding block; 12. Scraper; 13. Scraping groove; 14. First guiding groove; 15. Second guiding groove; 16. First reset spring; 17. Dredging rod; 18. Bristles; 19. Through groove; 20. Second reset spring; 21. Scraping block. Detailed Description of the Embodiment

[0029] Embodiment 1: A sand removal device for drilling fluid, such as Figure 1 、Figure 2 and Figure 3 as shown, including

[0030] a base 1;

[0031] a fixed box 2, a feeding port is provided on the left side of the top of the fixed box 2 for feeding, and a discharge port 4 for discharging is provided at the bottom of the outer wall of the fixed box 2;

[0032] a filtering component, the filtering component includes a coarse screen 5 and a fine screen 6 for coarse filtering and fine filtering. The coarse screen 5 is inclined and arranged at the top of the inner wall of the fixed box 2, and the fine screen 6 is arranged at the bottom of the inner wall of the fixed box 2. And a collecting component for collecting sediment is provided on the top of the base 1. The collecting component is arranged at the right side of the fixed box 2, and the collecting component includes a collecting box 7 and a collecting frame 8;

[0033] a cleaning component, the cleaning component includes a scraper 12 and a driving part for driving the scraper 12 to move. The driving part includes an adjusting screw rod 10 and a limiting slider 11. A cleaning part for cleaning the filter holes of the coarse screen 5 is arranged in the scraper 12. The cleaning part includes a first return spring 16, a dredging rod 17 and bristles 18.

[0034] Limiting chutes 9 are opened at both ends of the inner wall of the fixed box 2 at the top of the coarse screen 5. The adjusting screw rod 10 is rotationally connected to the inner wall of the limiting chute 9 through a motor. The limiting slider 11 is slidably connected to the inner wall of the limiting chute 9. A through threaded hole is opened in the limiting slider 11, and the adjusting screw rod 10 is threadedly connected to the threaded hole in the limiting slider 11. The scraper 12 is fixedly connected to the outer walls of the two limiting sliders 11 on the opposite sides.

[0035] Scraping grooves 13 are opened at both bottom ends of the scraper 12. A first guiding groove 14 is opened at the top of the scraper 12 on the side close to the collecting box 7. A second guiding groove 15 is opened at the top of the scraper 12 on the side far from the collecting box 7. The first guiding groove 14 is communicated with the scraping groove 13, and the second guiding groove 15 is communicated with the scraping groove 13. The second guiding groove 15 is communicated with the top of the first guiding groove 14. The scraping groove 13 and the first guiding groove 14 are concave, and the second guiding groove 15 is convex.

[0036] Through the provided scraping groove 13, the first guiding groove 14 and the second guiding groove 15, the concave design of the scraping groove 13 can reduce the contact area between the scraper 12 and the coarse screen 5, thereby increasing the pressure and improving the scraping effect of the impurities on the coarse screen 5. And when moving towards the collecting box 7, the impurities scraped off can be retained in the concave surface formed by the scraping groove 13 and the first guiding groove 14 through the concave surface of the first guiding groove 14. When moving away from the collecting box 7, through the convex design of the second guiding groove 15, the scraped impurities are moved to the other end of the scraper 12 along the second guiding groove 15, facilitating the discharging of the impurities.

[0037] such asFigure 4 As shown, the collection box 7 is fixedly connected to the right side position of the outer wall of the fixed box 2 and is communicated with the tail end of the coarse screen 5. A through hole for discharging materials is arranged at the bottom of the collection box 7, and the collection frame 8 is arranged at the bottom position of the through hole on the collection box 7.

[0038] A plurality of linearly arranged through grooves 19 are formed in the inner wall of the scraper 12 at the axis positions of the filter holes of the coarse screen 5. The dredging rod 17 is slidably connected to the inner wall of the through groove 19, and the first return spring 16 is fixedly connected to the opposite wall surfaces of the dredging rod 17 and the through groove 19.

[0039] The top end of the dredging rod 17 is cylindrical, the bottom of the dredging rod 17 is frustum-shaped with both ends of the cross-section being arc-shaped, and the brush hairs 18 are arranged at the bottom of the dredging rod 17.

[0040] In summary, through the arranged cleaning assembly, the impurities accumulated on the coarse screen 5 and the impurities blocked in the filter holes can be cleaned, avoiding the accumulation of impurities at the coarse screen 5, which requires manual cleaning and is very inconvenient, and can also avoid the blockage of the filter holes by impurities, affecting the filtering efficiency of the coarse screen 5.

[0041] Embodiment 2: On the basis of Embodiment 1, referring to Figure 5 , a plurality of circumferentially arranged sliding grooves are formed at the bottom of the inner wall of the through groove 19. A scraping block 21 is slidably connected to the inner wall of the sliding groove. A second return spring 20 is arranged on the opposite wall surfaces of the scraping block 21 and the sliding groove, and one end of the scraping block 21 close to the axis of the through groove 19 is convex.

[0042] Through the arranged second return spring 20 and scraping block 21, when the dredging rod 17 returns to the through groove 19, the impurities adhered to the brush hairs 18 on the dredging rod 17 can be scraped off by the scraping block 21, avoiding the impurities entering the through groove 19 along with the brush hairs 18, resulting in the dredging rod 17 being stuck in the through groove 19 and difficult to fall, affecting the cleaning of the filter holes.

[0043] The working principle of the present utility model: When filtering is required, raw materials are added into the base 1 through the feed port 3, and after being filtered by the coarse screen 5 and the fine screen 6, they are discharged through the discharge port 4. The impurities filtered out on the coarse screen 5 can fall into the collection frame 8 through its inclined surface and be collected in the collection box 7; at this time, the motor on the adjusting screw rod 10 is started, and the adjusting screw rod 10 can be rotated to drive the limit slider 11 threadedly connected thereto to slide in the limit sliding groove 9, and drive the scraper 12 to move to scrape the impurities accumulated on the coarse screen 5. And when the through groove 19 moves to the axis position of the filter hole, the first return spring 16 can drive the dredging rod 17 to extend into the inner wall of the filter hole to dredge the filter hole, and the brush hairs 18 are used to sweep off the impurities attached to the inner wall of the filter hole. When the through groove 19 moves away from the filter hole, the dredging rod 17 can be driven to return to the through groove 19 by the extrusion of the inner wall of the filter hole on the arc of the dredging rod 17, and then the filter holes can be cleaned in sequence.

[0044] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will also have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A drilling fluid desanding device, characterized in that: include: Base (1); A fixed box (2), a fixed box (2) for feeding is arranged on the left side of the top of the fixed box (2), and a discharge port (4) for discharging is arranged at the bottom of the outer wall of the fixed box (2); A filter assembly, wherein the filter assembly comprises a coarse screen (5) and a fine screen (6) for coarse filtration and fine filtration, the coarse screen (5) being arranged at an inclined position on the top of the inner wall of the fixed box (2), the fine screen (6) being arranged at the bottom of the inner wall of the fixed box (2), and a collecting assembly for collecting silt being arranged at the top of the base (1), the collecting assembly being arranged at the right side of the fixed box (2), and the collecting assembly comprising a collecting box (7) and a collecting frame (8); The cleaning component comprises a scraper (12) and a driving part for driving the scraper (12) to move, the driving part comprises an adjusting screw (10) and a limiting slider (11), the scraper (12) is provided with a cleaning part for cleaning the filter holes of the coarse screen (5), and the cleaning part comprises a first return spring (16), a dredging rod (17) and bristles (18).

2. The drilling fluid desanding device according to claim 1, characterized in that: The inner walls of the fixed box (2) are provided with limit slots (9) at both ends located on the top of the coarse screen (5); the adjusting screw rod (10) is connected to the inner wall of the limit slot (9) by a motor; the limit slider (11) is connected to the inner wall of the limit slot (9) by sliding; a threaded hole is provided in the limit slider (11); the adjusting screw rod (10) is threadedly connected to the threaded hole in the limit slider (11); and the scraper (12) is fixedly connected to the outer walls of the two limit sliders (11) on the opposite side.

3. The drilling fluid desanding device according to claim 1, characterized in that: The scraper (12) is provided with scraping grooves (13) at the bottom ends of both sides, a first guide groove (14) is provided at the top of the scraper (12) on the side close to the collection box (7), a second guide groove (15) is provided at the top of the scraper (12) on the side away from the collection box (7), the first guide groove (14) is connected to the scraping groove (13) and the second guide groove (15) is connected to the scraping groove (13), the second guide groove (15) is connected to the top of the first guide groove (14), the scraping groove (13) and the first guide groove (14) are concave, and the second guide groove (15) is convex.

4. The drilling fluid desanding device according to claim 1, characterized in that: The collecting box (7) is fixedly connected to the right side of the outer wall of the fixed box (2) and is connected to the rear end of the coarse screen (5). A through hole for unloading is provided at the bottom of the collecting box (7). The collecting frame (8) is provided at the bottom of the through hole on the collecting box (7).

5. The drilling fluid desanding device according to claim 3, characterized in that: The inner wall of the scraper (12) is provided with a plurality of linearly arranged through grooves (19) at the axis position of the filter hole of the coarse screen (5); the dredging rod (17) is slidably connected to the inner wall of the through groove (19); and the first return spring (16) is fixedly connected to the wall surface opposite to the dredging rod (17) and the through groove (19).

6. The drilling fluid desanding device according to claim 5, characterized in that: The top of the dredging rod (17) is cylindrical, the bottom of the dredging rod (17) is a truncated cone with arc-shaped cross sections at both ends, and the bristles (18) are arranged at the bottom of the dredging rod (17).

7. The drilling fluid desanding device according to claim 5, characterized in that: The bottom of the inner wall of the through groove (19) is provided with a plurality of sliding grooves arranged in a circumference, and a scraper block (21) is slidably connected to the inner wall of the sliding groove. A second return spring (20) is arranged on the wall surface opposite to the scraper block (21) and the sliding groove, and one end of the scraper block (21) close to the axis of the through groove (19) is convex.

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