A drilling fluid wet sieve meter

Abstract

The application relates to a drilling fluid wet sieve instrument, and relates to the field of detection equipment, which comprises a base, a vibration assembly arranged in the base, a sieve box arranged above the base, a drainage hole arranged in the base and communicated with the lower portion of the sieve box, a sieve screen arranged in the sieve box, a guide rod arranged above the base, a top cover detachably connected to the guide rod, the top cover being matched with the sieve box, a water pipe interface arranged on the outer side of the top cover, a spraying port arranged on the lower side of the top cover, the water pipe interface being communicated with the spraying port, a component arranged on the guide rod and used for fixing the top cover to the sieve box, and a backflushing component arranged on the inner wall of the sieve box and used for cleaning the sieve screen. The drilling fluid wet sieve instrument can efficiently sieve, and the operation steps of an operator are simplified.

Description

Technical Field

[0001] This application relates to the field of testing equipment, and in particular to a drilling fluid wet screening instrument. Background Technology

[0002] Drilling engineers need to perform quantitative analysis on the particle distribution of solid particles inside the drilling fluid. The data obtained from this analysis is used to evaluate the performance of the drilling fluid and the efficiency of the equipment. The overall analysis results are used to adjust the drilling fluid formula to optimize the drilling fluid and achieve better drilling results.

[0003] Existing drilling fluid analysis methods typically use wet screening instruments to process drilling fluids. Their core functions are "vibrating screening" and "wet screening." This method separates the drilling fluid by simulating the operation of a vibrating screen in a standardized drilling environment. Larger solid particles are retained on the upper part of the screen, while smaller solid particles and liquid pass through the screen. Water is sprayed onto the screen during the screening process to accelerate the screening speed. Finally, the solid particles retained on the screen are analyzed to obtain the results.

[0004] Regarding the aforementioned technologies, when a "critical particle size" close to the sieve aperture size gets stuck in the sieve mesh, forming a "sieve smearing" phenomenon, it will significantly reduce the effective flow area and slow down the sieving speed. When dealing with drilling fluids with high viscosity, the "sieve smearing" phenomenon will be further aggravated, and the gaps in the sieve mesh may become completely blocked, eventually leading to the sieve becoming unusable and needing to be replaced. Utility Model Content

[0005] In order to ensure that the drilling fluid wet screening instrument can effectively perform screening and simplify the operation steps for operators, this application provides a drilling fluid wet screening instrument.

[0006] This application provides a drilling fluid wet screening instrument, which adopts the following technical solution: A drilling fluid wet screening instrument includes a base, a vibration component inside the base, a screening box above the base, a drainage hole communicating with the bottom of the screening box, a screen inside the screening box, a guide rod above the base, a top cover detachably connected to the guide rod, the top cover being adapted to the screening box, a water pipe interface on the outside of the top cover, a spray nozzle on the bottom side of the top cover, the water pipe interface communicating with the spray nozzle, a component for fixing the top cover to the screening box on the guide rod, and a backflushing component on the inner wall of the screening box for cleaning the screen.

[0007] By adopting the above technical solution, when the wet screening instrument needs to be combined, the screening box is placed on the guide rod and the top cover is closed. The guide rod serves to fix the position of the top cover. The water pipe interface is connected to the water source. At this time, water will be sprayed onto the drilling fluid on the screen through the spray nozzle. At the same time, the vibration component starts to vibrate. The spray can effectively help accelerate the screening speed, and the vibration can also effectively help the drilling fluid to pass through the screen. When there is a lot of blockage on the screen, the backflushing component is used to flush the screen. At this time, the blockage on the screen can be effectively flushed back into the drilling fluid above, so that the blocked screen can be reused.

[0008] Optionally, the sieve box has several layers from top to bottom. The mesh size of the upper sieve box is larger than that of the lower sieve box. The lower edge of the sieve box has a groove, and the upper side of the sieve box can be provided with a protrusion. The groove and the protrusion are adapted to each other.

[0009] By adopting the above technical solution, when multi-stage sieving is required, sieve boxes with screens of different coarseness are connected in sequence. The screens are fixed in position between the sieve boxes by protrusions and grooves. The sealing ring can effectively ensure that the drilling fluid does not overflow from the connection of the sieve box when sieving.

[0010] The optional top cover is equipped with a slider, and the water pipe interface is located above the slider. The slider is slidably connected to the top cover. The slider is equipped with a spray nozzle in the backflush position. When the slider is in the spray position, the water pipe interface is connected to the spray nozzle; when the slider is in the backflush position, the water pipe interface is connected to the backflush assembly.

[0011] By adopting the above technical solution, when normal internal sieving is required, the slider is moved to the spray position. At this time, the spray nozzle sprays the drilling fluid from top to bottom to assist sieving. When the screen is clogged and needs to be cleaned before continuing sieving, the operator moves the slider to the backflushing position. At this time, the backflushing component flushes the clogged screen to ensure the subsequent sieving speed.

[0012] Optionally, the top cover has a first passage inside, which is connected to the spray nozzle. One end of the first passage is located at the spray position. The lower edge of the top rod has a first outlet connected to the first passage. The sieve box has an auxiliary spray passage from the protrusion to the groove inside. The inner wall of the sieve box has an auxiliary nozzle connected to the auxiliary spray passage. The auxiliary nozzle is located on the upper side of the screen and points towards the screen.

[0013] By adopting the above technical solution, when multiple sieve boxes are used simultaneously, after connecting the water pipe interface to the external water source, the slider is moved to the spray position. At this time, the water flows through the water pipe interface, spray nozzle, first passage, auxiliary spray passage and auxiliary nozzle in one go. When multiple sieve boxes are stacked, the auxiliary spray passage of each sieve box is connected. At this time, the auxiliary nozzle of each sieve box can spray water on the screen in its own sieve box, which effectively improves the efficiency of water spraying and thus improves the sieve speed.

[0014] The optional backwash assembly includes a second passage and a backwash nozzle. The second passage is located inside the top cover, with one end of the second passage located at the backwash position. The sieve box has a backwash passage that extends from the protrusion to the groove inside. The backwash nozzle is located inside the sieve box and is connected to the backwash passage.

[0015] By adopting the above technical solution, when backflushing is required, the slider is moved to the backflushing position. At this time, the water flows through the second passage to the backflushing port, realizing the washing of the screen from bottom to top, temporarily clearing the blocked mesh. After backflushing for a period of time, the backflushing is stopped and the screening operation continues.

[0016] Optionally, a flow monitoring component is provided at the drain hole, and an indicator light is provided on the base.

[0017] By adopting the above technical solution, the flow rate of the discharged liquid is detected by the flow detection component. When the flow rate decreases, the indicator light flashes to remind the operator to backwash the screen.

[0018] Optionally, the screen and the sieve box are detachably connected. The screen edge has a locking protrusion, and the inner wall of the sieve box has a sliding groove from bottom to top that matches the locking protrusion. The end of the sliding groove has a horizontal fixing groove.

[0019] By adopting the above technical solution, when it is necessary to modify or disassemble the screen, the operator rotates the screen to make the locking protrusions rotate out of the fixed groove, and then removes the screen through the slide, thus realizing the detachable operation of the screen. Since the slide is set from bottom to top in the sieve box, solid particles will not accumulate in the slide during normal sieving, thus avoiding the increased difficulty of later collection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a drilling fluid wet screening instrument.

[0021] Figure 2 A top view of the overall structure.

[0022] Figure 3 yes Figure 2 A cross-sectional schematic diagram of AA.

[0023] Figure 4 yes Figure 2 A cross-sectional view of BB.

[0024] Figure 5 yes Figure 3 An enlarged schematic diagram of part A in the middle.

[0025] Figure 6 This is a bottom view of the sieve box.

[0026] Explanation of reference numerals in the attached drawings: 1. Base; 11. Drain hole; 12. Vibration component; 13. Guide rod; 14. Flow monitoring component; 15. Indicator light; 2. Sieve box; 21. Protrusion; 22. Groove; 23. Auxiliary spray passage; 231. Auxiliary nozzle; 24. Backflush passage; 241. Backflush nozzle; 25. Slide groove; 26. Screen; 3. Top cover; 31. Water pipe interface; 33. Spray nozzle; 32. Slider; 321. First passage; 322. Second passage. Detailed Implementation

[0027] The present application will be further described in detail below with reference to all the accompanying drawings.

[0028] This application discloses a drilling fluid wet screening instrument.

[0029] Reference Figures 1 to 6 A drilling fluid wet screening instrument includes a base 1, a vibration component 12 inside the base 1, a screening box 2 above the base 1, a drainage hole 11 communicating with the bottom of the screening box 2, a screen 26 inside the screening box 2, a guide rod 13 above the base 1, a top cover 3 detachably connected to the guide rod 13, the top cover 3 being adapted to the screening box 2, a water pipe interface 31 on the outside of the top cover 3, a spray nozzle 33 on the lower side of the top cover 3, the water pipe interface 31 communicating with the spray nozzle 33, an assembly for fixing the top cover 3 to the screening box 2 on the guide rod 13, and a backflushing assembly on the inner wall of the screening box 2 for cleaning the screen 26. When the wet screening instrument needs to be assembled, the screening box 2 is placed on the guide rod 13 and the top cover 3 is closed. The guide rod 13 serves to fix the position of the top cover 3. The water pipe interface 31 is connected to the water source. At this time, water will be sprayed onto the drilling fluid on the screen 26 through the spray nozzle 33. At the same time, the vibration component 12 starts to vibrate. The spray can effectively help accelerate the screening speed, and the vibration can also effectively help the drilling fluid to pass through the screen. When there is a lot of blockage on the screen 26, the backflushing component is used to flush the screen 26. At this time, the blockage on the screen can be effectively flushed back into the drilling fluid above, so that the blocked screen 26 can be reused.

[0030] After sieving, operators can remove the sieve box and collect and analyze the solid particles inside.

[0031] In this embodiment, an ultrasonic vibration device is used to achieve the effect of the vibration component. The ultrasonic vibration device is a relatively mature technology in this industry. Other devices that can achieve the vibration effect include traditional vibration generators, which can also drive the sieve box 2 above the base 1 to vibrate.

[0032] In this embodiment, the fixing component is a sliding sleeve with bolts installed. During installation, the top cover 3 is slidably connected to the guide rod 13. After the connection is completed, the sliding sleeve is installed on the guide rod 13. After the sliding sleeve abuts against the top rod, the bolts on the sliding sleeve are tightened so that it abuts against the guide rod 13, thus completing the position fixation. Other structures that can fix the position of the top cover 3, such as positioning claws, are also acceptable.

[0033] Several sieve boxes 2 are arranged from top to bottom. The mesh size of the screen 26 in the upper sieve box 2 is larger than that in the lower sieve box 2. The lower edge of the sieve box 2 has a groove 22, and the upper edge of the sieve box 2 has a protrusion 21. The groove 22 and the protrusion 21 are adapted to each other. When multi-stage sieving is required, the sieve boxes 2 with screens 26 of different coarseness are connected in sequence. The screens 26 are fixed in position between the sieve boxes 2 by the protrusion 21 and the groove 22. The sealing ring can effectively ensure that the drilling fluid does not overflow from the connection of the sieve boxes 2 during sieving.

[0034] The top cover 3 is equipped with a slider 32, and a water pipe interface 31 is located above the slider 32. The slider 32 is slidably connected to the top cover 3. The slider 32 is equipped with a spray nozzle in the backflushing position. When the slider 32 is in the spray position, the water pipe interface 31 is connected to the spray nozzle 33; when the slider 32 is in the backflushing position, the water pipe interface 31 is connected to the backflushing assembly. When normal internal sieving is required, the slider 32 is moved to the spray position. At this time, the spray nozzle 33 sprays the drilling fluid from top to bottom to assist sieving. When the screen 26 is clogged and needs to be cleaned before continuing sieving, the operator moves the slider 32 to the backflushing position. At this time, the backflushing assembly flushes the clogged screen 26 to ensure the subsequent sieving speed.

[0035] The top cover 3 has a first passage 321 inside, which is connected to the spray nozzle 33. One end of the first passage 321 is located at the spray position. The lower edge of the top rod has a first outlet connected to the first passage 321. The sieve box 2 has an auxiliary spray passage 23 from the protrusion 21 to the groove 22 inside. The inner wall of the sieve box 2 has an auxiliary nozzle 231 connected to the auxiliary spray passage 23. The auxiliary nozzle 231 is located on the upper side of the screen 26 and points towards the screen 26. After connecting the water pipe interface 31 to an external water source, the slider 32 is moved to the spray position. At this time, the water flows through the water pipe interface 31, the spray nozzle 33, the first passage 321, the auxiliary spray passage 23 and the auxiliary nozzle 231. When multiple sieve boxes 2 are stacked, the auxiliary spray passage 23 of each sieve box 2 is connected. At this time, the auxiliary nozzle 231 of each sieve box can spray water on the screen 26 in its respective sieve box 2, which effectively improves the efficiency of water spraying and thus improves the sieve speed.

[0036] The backwash assembly includes a second passage 322 and a backwash nozzle 241. The second passage 322 is located inside the top cover 3, with one end of the second passage 322 positioned at the backwash position. The sieve box 2 has a backwash passage 24 that extends from the protrusion 21 to the groove 22 inside. The backwash nozzle 241 is located inside the sieve box 2 and is connected to the backwash passage 24. When a backwash operation is required, the slider 32 is moved to the backwash position. At this time, water flows through the second passage 322 to the backwash nozzle, achieving bottom-up rinsing of the screen 26 and temporarily clearing the blocked mesh. After a period of backwashing, the backwashing is stopped and the sieving operation continues.

[0037] A flow monitoring component 14 is installed at the drain hole 11, and an indicator light 15 is installed on the base 1. The flow monitoring component detects the flow rate of the discharged liquid. When a decrease in flow rate is detected, the indicator light 15 flashes to remind the operator to backwash the screen 26.

[0038] The screen 26 and the sieve box 2 are detachably connected. The circumferential edge of the screen 26 has a locking protrusion, and the inner wall of the sieve box 2 has a sliding groove 25 from bottom to top that matches the locking protrusion. The end of the sliding groove 25 has a horizontal fixing groove. When it is necessary to modify or disassemble the screen 26, the operator rotates the screen 26 to make the locking protrusion rotate out of the fixing groove, and then removes the screen 26 through the sliding groove 25, thus realizing the detachable operation of the screen 26. Since the sliding groove 25 is set from bottom to top in the sieve box 2, solid particles will not accumulate in the sliding groove 25 during normal sieving, thus avoiding the increased difficulty of later collection.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drilling fluid wet screening instrument, comprising a base (1), characterized in that: The base (1) is equipped with a vibration component (12) inside. A sieve box (2) is provided above the base (1). The base (1) is equipped with a drain hole (11) that communicates with the bottom of the sieve box (2). A sieve screen (26) is provided inside the sieve box (2). A guide rod (13) is provided above the base (1). A top cover (3) is detachably connected to the guide rod (13). The top cover (3) is adapted to the sieve box (2). A water pipe interface (31) is provided on the outside of the top cover (3). A spray nozzle (33) is provided on the lower side of the top cover (3). The water pipe interface (31) communicates with the spray nozzle (33). A fixing component is provided on the guide rod (13) for fixing the top cover (3) to the sieve box (2). A backflushing component is provided on the inner wall of the sieve box (2). The backflushing component is used to clean the sieve screen (26).

2. The drilling fluid wet screening instrument according to claim 1, characterized in that: The sieve box (2) has several layers from top to bottom. The mesh size of the sieve (26) of the upper sieve box (2) is larger than that of the sieve (26) of the lower sieve box (2). The lower edge of the sieve box (2) has a groove (22) and the upper edge of the sieve box (2) has a protrusion (21). The groove (22) and the protrusion (21) are adapted to each other.

3. A drilling fluid wet screening instrument according to claim 2, characterized in that: The top cover (3) is provided with a slider (32), and the water pipe interface (31) is located above the slider (32). The slider (32) is slidably connected to the top cover (3). The slider (32) is provided with a spray position and a backflush position. When the slider (32) is in the spray position, the water pipe interface (31) is connected to the spray nozzle (33); when the slider (32) is in the backflush position, the water pipe interface (31) is connected to the backflush component.

4. A drilling fluid wet screening instrument according to claim 3, characterized in that: The top cover (3) has a first passage (321) inside, which is connected to the spray nozzle (33). One end of the first passage (321) is located at the spray position. The lower edge of the top cover (3) is provided with a first outlet connected to the first passage (321). The sieve box (2) has an auxiliary spray passage (23) extending from the protrusion (21) to the groove (22) inside. The inner wall of the sieve box (2) is provided with an auxiliary nozzle (231) connected to the auxiliary spray passage (23). The auxiliary nozzle (231) is located on the upper side of the screen (26), and its spray direction is directed towards the screen (26).

5. A drilling fluid wet screening instrument according to claim 4, characterized in that: The backflush assembly includes a second passage (322) and a backflush nozzle (241). The second passage (322) is located inside the top cover (3), and one end of the second passage (322) is located at the backflush position. The sieve box (2) is provided with a backflush passage (24) that runs through the protrusion (21) to the groove (22). The backflush nozzle (241) is located inside the sieve box (2) and is connected to the backflush passage (24).

6. A drilling fluid wet screening instrument according to claim 5, characterized in that: A flow monitoring component (14) is provided at the drain hole (11), and an indicator light (15) is provided at the base (1).

7. A drilling fluid wet screening instrument according to claim 1, characterized in that: The screen (26) and the sieve box (2) are detachably connected. The screen (26) has a locking protrusion on its circumferential edge. The inner wall of the sieve box (2) has a sliding groove (25) that matches the locking protrusion. The sliding groove (25) extends from bottom to top and has a horizontal fixing groove at its end.

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