A petroleum drilling engineering drilling fluid desanding device

Abstract

The utility model discloses a kind of petroleum drilling engineering drilling fluid sand removal devices, belong to drilling fluid sand removal device field, including support frame, discharge pipe and feed pipe are provided on the support frame, multiple groups of cyclone sand remover are communicated on the discharge pipe and feed pipe, the bottom end of the support frame is provided with a vibrating screen, flow guide box is provided on the vibrating screen, and the inner wall top of flow guide box is provided with filter plate, V-shaped filter plate is fixedly installed on the inner wall of flow guide box, and flow splitter is fixedly installed on the both sides of flow guide box, the bottom end of flow guide box is provided with flow guide mouth;Material " accurate shunt " is realized by the three-stage optimization of flow guide box, filter plate first intercepts oversized particles, avoids its formation accumulation in front end of screen surface, the dispersion effect of V-shaped filter plate cooperates with the guidance of flow splitter, so that particle is evenly distributed and discharged, flow guide mouth is inclined to guide the rear end of vibrating screen, increase the effective screening area utilization rate of vibrating screen, solve the problem of " front end overload, rear end waste ".

Description

Technical Field

[0001] This utility model relates to the technical field of drilling fluid desanding devices, specifically a drilling fluid desanding device for oil drilling engineering. Background Technology

[0002] In oil drilling engineering, drilling fluid is the "blood" of drilling operations, and its performance directly affects drilling efficiency, wellbore stability, and equipment lifespan. During circulation, drilling fluid carries a large amount of solid particles such as formation cuttings and sand. If these particles are not removed in time, they will not only cause abnormal increases in the viscosity and density of the drilling fluid, increasing the load on the drilling pump, but also accelerate the wear of equipment such as drill bits and drill pipes, and even cause safety accidents such as stuck pipe and blowouts.

[0003] Most existing drilling fluid desanding devices adopt a combination structure of "cyclone desander + vibrating screen". After the drilling fluid is pressurized by the sand pump, it spirals into the inner wall of the cyclone desander. Under the combined action of centrifugal force and gravity, the coarser solid particles spiral down along the wall of the device and are discharged from the bottom outlet, falling into the fine vibrating screen below for secondary separation.

[0004] However, existing devices have significant drawbacks in practical applications: the solid particles discharged from the underflow port of the cyclone separator are in a "columnar spray" or "umbrella-shaped diffusion" state. When they fall directly onto the vibrating screen surface, uneven particle distribution is likely to occur. A large number of particles accumulate at the feed end of the screen surface, while the middle and rear ends of the screen surface are "idle" due to sparse particles. This local overload phenomenon not only leads to insufficient utilization of the effective screening area of ​​the vibrating screen, but also causes some fine particles to be unable to pass through the screen effectively due to excessive particle accumulation at the feed end, resulting in low overall screening efficiency. At the same time, the concentrated impact of particles will aggravate the wear of the screen at the feed end, shorten the screen service life, increase equipment maintenance costs and downtime, and affect the continuity of drilling operations.

[0005] Therefore, this utility model provides a drilling fluid desanding device for oil drilling engineering to solve the above problems. Utility Model Content

[0006] This utility model provides a drilling fluid desanding device for oil drilling engineering, which aims to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a drilling fluid desander device for oil drilling engineering, comprising a support frame, a discharge pipe and a feed pipe provided on the support frame, multiple sets of cyclone desanders connected to the discharge pipe and the feed pipe, a vibrating screen provided at the bottom of the support frame, a flow guide box provided on the vibrating screen, a filter plate provided at the top of the inner wall of the flow guide box, a V-shaped filter plate fixedly installed on the inner wall of the flow guide box, and flow dividers fixedly installed on both sides of the flow guide box, a flow guide port opened at the bottom of the flow guide box, and the flow guide port is inclined towards the rear end of the vibrating screen.

[0008] Furthermore, the filter plate is provided with elongated filter grooves in the width direction, and the filter grooves are parallel to the short side of the filter plate.

[0009] Furthermore, the support frame is fixedly connected to the vibrating screen by multiple sets of support springs, which are evenly distributed along the edge of the vibrating screen.

[0010] Furthermore, a clamping plate is fixedly installed on both sides of the flow guide box, and a limiting frame is fixedly installed on both sides of the vibrating screen. The clamping plate and the limiting frame are interlocked, and the clamping plate is detachably fixed within the limiting frame.

[0011] Furthermore, multiple sets of support plates are fixedly installed at the rear end of the vibrating screen, and a vibrating motor is fixedly installed on each of the multiple sets of support plates.

[0012] Furthermore, the bottom ends of the multiple sets of cyclone desanders are fixedly connected to the discharge pipe via flanges.

[0013] Furthermore, multiple sets of anti-clogging rods are fixedly installed on the filter plate, and the tops of the multiple sets of anti-clogging rods are located inside multiple sets of discharge pipes.

[0014] This device achieves "precise diversion" of materials through three-stage optimization of the diversion box. The filter plate first intercepts oversized particles to prevent them from accumulating at the front of the screen. The dispersing effect of the V-shaped filter plate, combined with the guidance of the diversion plate, ensures that the particles are evenly distributed and discharged. The diversion port is tilted to guide the vibrating screen to the rear end, increasing the effective screening area utilization rate of the vibrating screen and solving the problem of "overload at the front end and waste at the rear end". Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the second overall structure of the present invention;

[0017] Figure 3 This is a side view of the structure of this utility model;

[0018] Figure 4This is a schematic diagram of the flow guide box structure in this utility model;

[0019] Figure 5 This is a schematic diagram of the exploded structure of the guide box in this utility model;

[0020] Figure 6 for Figure 3 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Support frame; 2. Discharge pipe; 21. Feed pipe; 3. Hydrocyclone sand separator; 31. Flange; 32. Discharge pipe; 4. Flow guide box; 41. Diverter plate; 42. Flow guide port; 43. Filter plate; 44. Clamping plate; 45. V-shaped filter plate; 5. Vibrating screen; 51. Support spring; 6. Support plate; 61. Vibrating motor; 7. Anti-clogging rod; 8. Limiting frame; 9. Mounting part. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a drilling fluid desanding device for oil drilling engineering, such as... Figure 1 — Figure 6 As shown, the device includes a support frame 1, on which a discharge pipe 2 and a feed pipe 21 are mounted. Multiple sets of hydrocyclone desanders 3 are connected to the discharge pipe 2 and the feed pipe 21. The feed pipe 21 is connected to the inlet of the hydrocyclone desander 3, and the discharge pipe 2 is connected to the outlet of the hydrocyclone desander 3. Multiple hydrocyclone desanders 3 can be installed. To achieve better desandering efficiency, the hydrocyclone desanders can be connected in series, with the outlet of one hydrocyclone desander connected to the inlet of the next hydrocyclone desander. However, this installation method reduces the desandering efficiency of the hydrocyclone desander 3. Alternatively, multiple hydrocyclone desanders can be connected in parallel, with the inlet of each hydrocyclone desander 3 connected to the feed pipe 21 and the outlet of each hydrocyclone desander 3 connected to the discharge pipe 2.

[0024] The lower end of the hydrocyclone 3 is connected to the discharge pipe 32 via flange 31. After being filtered by the hydrocyclone 3, the sand and gravel fall from the discharge pipe 32. When the discharge pipe 32 becomes blocked or worn, the flange can be quickly disassembled for cleaning or replacement, reducing maintenance difficulty.

[0025] A vibrating screen 5 is installed at the bottom of the support frame 1. A flow guide box 4 is installed on the vibrating screen 5, and a filter plate 43 is installed at the top of the inner wall of the flow guide box 4. Long strip-shaped filter grooves are evenly distributed along the length of the filter plate 43, and the filter grooves are parallel to the short side of the filter plate. The filter plate 43 can intercept oversized particles in advance, preventing them from directly impacting the vibrating screen mesh, reducing screen wear, and extending the screen's service life. At the same time, the filter plate 43 has long strip-shaped filter grooves evenly distributed along its long side, allowing drilling fluid impurities to slide down evenly along the filter grooves.

[0026] A V-shaped filter plate 45 is fixedly installed on the inner wall of the flow guide box 4. The V-shaped filter plate 45 is placed upside down inside the flow guide box 4, and circular filter holes are evenly arranged on the V-shaped filter plate 45. A flow divider plate 41 is fixedly installed on both sides of the flow guide box 4. The edge of the flow divider plate 41 is connected to the V-shaped filter plate 45. The V-shaped filter plate 45 uses the inclined surfaces on both sides to disperse the filtered impurities to both sides. In conjunction with the flow divider plates 41 on both sides, the material distribution is further optimized and discharged to prevent local accumulation. A flow guide port 42 is opened at the bottom of the flow guide box 4. The bottom surface of the flow guide port 42 is inclined downward and points towards the rear end of the vibrating screen 5 to guide the filtered impurities to the middle and rear area of ​​the vibrating screen 5, so as to maximize the use of the effective screening area of ​​the vibrating screen.

[0027] The support frame 1 has an inverted triangular mounting part 9 at its bottom, and a support spring 51 is mounted on the mounting part 9. The support frame 1 is fixedly connected to the vibrating screen 5 through multiple sets of support springs 51. The support springs 51 are evenly distributed along the edge of the vibrating screen 5 to buffer the vibration impact of the vibrating screen 5 and maintain its vibration stability. They can buffer the high-frequency vibration impact generated during the operation of the vibrating screen and prevent vibration energy from being transmitted to the support frame and other fixed components. After the vibration of the vibrating screen 5, the drilling fluid mixed in the gravel is collected by the collection device under the vibrating screen and can be recycled. The filtered gravel is collected either on the vibrating screen or slides down the vibrating screen.

[0028] Both sides of the flow guide box 4 are fixedly installed with a clamping plate 44. The clamping plate 44 is located on the outside of the flow guide box 4, with a space between it and the flow guide box 4. Both sides of the vibrating screen 5 are fixedly installed with a limit frame 8. The clamping plate 44 is inserted into the inside of the limit frame 8 and fits into the limit frame 8. The clamping plate 44 is embedded in the limit frame 8 and can be detachably fixed with bolts, which facilitates the maintenance and replacement of the flow guide box and shortens the maintenance time.

[0029] Multiple sets of support plates 6 are fixedly installed at the rear end of the vibrating screen 5. Vibrating motors 61 are fixedly installed on the multiple sets of support plates 6. The vibrating motors 61 serve as a power source and can provide continuous and stable directional vibration for the vibrating screen 5, ensuring that the material moves along a preset trajectory on the screen surface and achieving efficient screening.

[0030] Multiple anti-clogging rods 7 are fixedly installed on the filter plate 43. The top of the multiple anti-clogging rods 7 is located inside the multiple discharge pipes 32, which can break the accumulation trend of solid particles in the discharge pipe in real time.

[0031] In use, the drilling fluid to be treated first enters through the feed pipe 21, and the feed pipe 21 evenly distributes the drilling fluid into multiple sets of parallel hydrocyclone desanders 3. The filtered drilling fluid is recycled through the discharge pipe 2, and the filtered impurities are discharged through the discharge pipe 32 at the bottom of the hydrocyclone desander 3.

[0032] The solid particles discharged from the discharge pipe 32 still carry a large amount of drilling fluid. The mixture of solid particles and drilling fluid falls directly into the guide box 4 above the vibrating screen 5. The vibrating motor 61 transmits vibration energy to the vibrating screen 5 and the guide box 4 through multiple sets of support plates 6. The filter plate 43 at the top of the guide box 4 first intercepts the falling material and filters out the mixed oversized particles. At the same time, the anti-blocking rod 7 vertically set on the filter plate 43 penetrates into the discharge pipe 32 and can vibrate in real time to break the accumulation trend of particles in the discharge pipe 32, avoid blockage of the discharge pipe, and ensure stable material falling.

[0033] The material after primary filtration continues to fall into the V-shaped filter plate 45 inside the guide box 4. The V-shaped structure can disperse the material to both sides, and together with the diversion plates 41 on both sides of the guide box 4, guide the material to be discharged for the first time. At the same time, the V-shaped filter plate 45 can filter some fine particles for the second time, so that the particle size distribution of solid particles in the material is more uniform.

[0034] Finally, the impurities processed by the V-shaped filter plate 45 are discharged through the guide port 42 at the bottom of the guide box 4. Since the guide port 42 is inclined towards the rear end of the vibrating screen 5, the impurities are precisely guided to the middle and rear area of ​​the vibrating screen 5, maximizing the effective screening area of ​​the vibrating screen. After being filtered by the vibrating screen 5, the drilling fluid mixed in the sand and gravel is collected by the collection device under the vibrating screen and can be recycled. The filtered sand and gravel are collected either on the vibrating screen or slide down the vibrating screen.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A drilling fluid desander device for oil drilling engineering, comprising a support frame (1), wherein a discharge pipe (2) and a feed pipe (21) are provided on the support frame (1), and multiple sets of cyclone desanders (3) are connected to the discharge pipe (2) and the feed pipe (21), and a vibrating screen (5) is provided at the bottom end of the support frame (1), characterized in that: The vibrating screen (5) is provided with a flow guide box (4), and a filter plate (43) is provided at the top of the inner wall of the flow guide box (4). A V-shaped filter plate (45) is fixedly installed on the inner wall of the flow guide box (4), and a flow divider plate (41) is fixedly installed on both sides of the flow guide box (4). A flow guide port (42) is opened at the bottom of the flow guide box (4), and the flow guide port (42) is tilted towards the rear end of the vibrating screen (5).

2. The oil drilling fluid desanding device according to claim 1, characterized in that... The filter plate (43) has a long strip-shaped filter groove in the width direction, and the filter groove is parallel to the short side of the filter plate.

3. The oil drilling fluid desanding device according to claim 1, characterized in that: The support frame (1) is fixedly connected to the vibrating screen (5) by multiple sets of support springs (51), and the support springs (51) are evenly distributed along the edge of the vibrating screen (5).

4. The oil drilling fluid desanding device according to claim 1, characterized in that: Both sides of the flow guide box (4) are fixedly installed with a card plate (44), and both sides of the vibrating screen (5) are fixedly installed with a limit frame (8). The card plate (44) and the limit frame (8) are interlocked, and the card plate (44) is embedded in the limit frame (8) and can be detached and fixed.

5. A desanding device for drilling fluid in oil drilling engineering according to claim 1, characterized in that: Multiple sets of support plates (6) are fixedly installed at the rear end of the vibrating screen (5), and a vibrating motor (61) is fixedly installed on the multiple sets of support plates (6).

6. The desanding device for drilling fluid in oil drilling engineering according to claim 1, characterized in that: The bottom ends of the multiple sets of cyclone sand separators (3) are fixedly connected to the discharge pipe (32) via flanges (31).

7. A desanding device for drilling fluid in oil drilling engineering according to claim 1, characterized in that: Multiple sets of anti-clogging rods (7) are fixedly installed on the filter plate (43), and the tops of the multiple sets of anti-clogging rods (7) are located inside the multiple sets of discharge pipes (32).

Images