Underground annular particle erosion experimental device

Abstract

The utility model relates to the technical field of testing of equipment erosion caused by annulus particles, and discloses an underground annulus particle erosion experiment device which comprises an annulus simulation bin, an experiment cavity is formed in the annulus simulation bin, experiment equipment is arranged in the experiment cavity, and a particle erosion arc groove is formed in the inner wall of the experiment cavity; the testing mechanisms are located at the upper end and the lower end of the annulus simulation bin, each testing mechanism comprises a bearing assembly, a pressing assembly and a rotating assembly, the bearing assemblies are located at the bottom of the annulus simulation bin, the pressing assemblies are located at the top of the annulus simulation bin, and the rotating assemblies are located in the pressing assemblies; through the arrangement of the testing mechanism, an underground annular particle erosion experiment can be simulated, the erosion effect of particles on equipment under different working conditions can be simulated through the erosion experiment, the erosion resistance and the service life of the equipment can be evaluated, a scientific basis is provided for design, material selection and maintenance of the equipment, and it is ensured that the equipment can safely and reliably operate underground.

Description

Technical Field

[0001] This utility model relates to the field of testing technology for annular particle erosion of equipment, specifically a downhole annular particle erosion experimental device. Background Technology

[0002] Downhole annulus refers to the annular space between the wellbore and the casing or between the casing and the tubing. Downhole annulus particle erosion refers to the process in which fluids carrying solid particles, such as mud or produced fluids, collide and rub against the surfaces of equipment such as casing, tubing, and downhole tools within this annular space, resulting in the gradual wear and peeling off of the equipment surface materials.

[0003] During drilling, the drill bit breaks rocks, producing cuttings. In the oil well production stage, solid particles such as sand from the formation enter the wellbore along with the fluid. These solid particles flow within the annulus, becoming abrasive material. To achieve drilling fluid circulation, sand carrying, and well completion operations, the fluid needs to maintain a certain flow velocity within the downhole annulus. The fluid flow drives the solid particles, giving them kinetic energy. When these particles collide with the equipment surface within the annulus, they cause erosion. However, traditional equipment makes it difficult to simulate downhole annular particle erosion during use. Because downhole casing, tubing, and other equipment are subject to annular particle erosion during long-term service, it is difficult to assess the equipment's erosion resistance and service life, making it impossible to ensure safe and reliable operation of the equipment downhole. Furthermore, without erosion testing, it is difficult to detect potential erosion problems in advance, leading to equipment failure and further safety hazards and economic losses. Utility Model Content

[0004] The purpose of this invention is to provide a downhole annular particle erosion experimental device, which solves the problem that it is difficult to simulate downhole annular particle erosion experiments in the background technology. Because downhole casing, tubing and other equipment are affected by annular particle erosion during long-term service, it is difficult to evaluate the erosion resistance and service life of the equipment.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A downhole annular particle erosion experimental apparatus includes:

[0007] An annular simulation chamber, wherein an experimental cavity is provided inside the annular simulation chamber, experimental equipment is installed inside the experimental cavity, and particle erosion arc grooves are provided on the inner wall of the experimental cavity.

[0008] The testing mechanism is located at the upper and lower ends of the annular simulation chamber and is used to test the experimental equipment. The testing mechanism includes a receiving component, a pressing component, and a rotating component. The receiving component is located at the bottom of the annular simulation chamber and is used to receive the experimental equipment. The pressing component is located at the top of the annular simulation chamber and is used to press the experimental equipment. The rotating component is located inside the pressing component and is used to rotate the pressing component.

[0009] Preferably, the receiving component includes a base plate fixed to the bottom of the annular simulation chamber. The top of the base plate has a receiving groove for inserting experimental equipment. The outer wall of the receiving groove has multiple evenly distributed fixing grooves. Rollers are installed inside the multiple fixing grooves. The multiple rollers correspond to the outer wall of the experimental equipment. The interior of the base plate has multiple evenly distributed through holes. The multiple through holes cooperate with the experimental chamber.

[0010] Preferably, the pressing component includes a rotating plate disposed on the top of the annular simulation chamber, a fixed disk fixed on one side of the rotating plate, a rotating disk mounted on the bottom of the fixed disk, and a plurality of evenly distributed abutment blocks fixed on the bottom of the rotating disk, the plurality of abutment blocks corresponding to the top of the experimental equipment, and a moving component for driving the rotating plate to move up and down is disposed on one side of the annular simulation chamber.

[0011] Preferably, the moving component includes an extension block fixed to one side of the annular simulation chamber, a storage block fixed to the top of the extension block, a storage slot provided inside the storage block, an adjustment block provided inside the storage slot, the top of the adjustment block being connected to the bottom of one side of the rotating plate, and a driving component for driving the adjustment block to move vertically is provided between the adjustment block and the storage slot.

[0012] Preferably, the driving assembly includes a drive motor fixed to one side of the storage block, a fixing groove is provided on one side of the storage slot, a gear is installed inside the fixing groove, the output end of the drive motor extends into the fixing groove and is connected to the gear, a rack that meshes with the gear is installed on one side of the adjusting block, a movable plate is fixed on both sides of the adjusting block, an opening groove for the movable plate to move is provided on both sides of the storage block, and the movable plate extends to one side of the opening groove and is fixed with a linkage plate.

[0013] Preferably, the rotating assembly includes a baffle fixed to the top of the adjusting block, two support seats fixed to the top of the baffle, a fixed shaft installed between the two support seats, a rotating block installed on the outer wall of the fixed shaft, the rotating block being fixed to the bottom of one side of the rotating plate, two mounting blocks fixed to the bottom of the rotating plate, each mounting block having an arc groove at its bottom that mates with the support seats, and a positioning assembly for positioning the rotating plate being provided on one side of the top of the baffle.

[0014] Preferably, the positioning component includes a support frame fixed to one side of the top of the baffle, with fixing plates fixed on both sides of the top of the support frame, insert plates inserted into the top of the two fixing plates, and a groove for the rotating plate to abut between the two fixing plates, with a mounting plate fixed to the bottom of the insert plate, and a bolt screwed between the mounting plate and one of the fixing plates.

[0015] Preferably, the outer wall of the annular simulation chamber is fixed with a fixing sleeve, and the outer wall of the fixing sleeve is fixed with a plurality of evenly distributed support legs, and the bottom of the plurality of support legs is equipped with a support plate.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0017] This invention, through the setting of a testing mechanism, can realize simulated downhole annular particle erosion experiments. Through erosion experiments, the erosion effect of particles on equipment under different working conditions can be simulated, and the erosion resistance and service life of the equipment can be evaluated. This provides a scientific basis for the design, material selection and maintenance of the equipment, ensuring that the equipment can operate safely and reliably downhole. At the same time, it solves the problem that in traditional equipment, due to the lack of erosion experiments, it is difficult to detect potential erosion problems in advance, leading to equipment failure, safety hazards and economic losses. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the annular simulation chamber of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the testing mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the baffle and rotating plate of this utility model when disassembled;

[0022] Figure 5 This is a cross-sectional view of the storage block of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the experimental equipment and base plate of this utility model during disassembly.

[0024] The components are as follows: 1. Annular simulation chamber; 2. Fixing sleeve; 3. Support leg; 4. Base plate; 5. Extension block; 6. Storage block; 7. Baffle; 8. Rotating plate; 9. Fixing disk; 10. Rotating disk; 11. Experimental equipment; 12. Particle erosion arc groove; 13. Through hole; 14. Drive motor; 15. Linkage plate; 16. Abutment block; 17. Support base; 18. Fixing shaft; 19. Rotating block; 20. Mounting block; 21. Support frame; 22. Fixing plate; 23. Insert plate; 24. Bolt; 25. Adjusting block; 26. Gear; 27. Rack; 28. Roller. Detailed Implementation

[0025] 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.

[0026] Please refer to Figure 1 and Figure 2 An experimental device for particle erosion in the annulus of a well includes: an annulus simulation chamber 1, an experimental cavity is provided inside the annulus simulation chamber 1, experimental equipment 11 is provided inside the experimental cavity, and particle erosion arc grooves 12 are provided on the inner wall of the experimental cavity. A fixing sleeve 2 is fixed on the outer wall of the annulus simulation chamber 1, and multiple evenly distributed support legs 3 are fixed on the outer wall of the fixing sleeve 2. Support plates are installed at the bottom of the multiple support legs 3.

[0027] Please refer to Figure 3 - Figure 6 The testing mechanism is located at the upper and lower ends of the annular simulation chamber 1 and is used to test the experimental equipment 11. The testing mechanism includes a receiving component, a pressing component, and a rotating component. The receiving component is located at the bottom of the annular simulation chamber 1 and is used to receive the experimental equipment 11. The pressing component is located at the top of the annular simulation chamber 1 and is used to press the experimental equipment 11. The rotating component is located inside the pressing component and is used to rotate the pressing component. The receiving component includes a base plate 4 fixed to the bottom of the annular simulation chamber 1. The top of the base plate 4 has a receiving groove for the experimental equipment 11 to be inserted. The outer wall of the receiving groove has multiple evenly distributed fixing grooves. Rollers 28 are installed inside the multiple fixing grooves. The multiple rollers 28 correspond to the outer wall of the experimental equipment 11. The inside of the base plate 4 has multiple evenly distributed through holes 13. The multiple through holes 13 are matched with the experimental chamber.

[0028] The experimental device 11 to be tested is placed into the experimental chamber, with its bottom inserted into the receiving groove. After testing the experimental device 11, it can rotate in the receiving groove using multiple evenly distributed rollers 28, thereby improving the flexibility of the experimental device 11 during testing, enabling uniform simulation testing of its outer wall, and improving the accuracy of the test data.

[0029] Furthermore, such as Figure 3 As shown, the pressing component includes a rotating plate 8 set on the top of the annular simulation chamber 1. A fixed plate 9 is fixed on one side of the rotating plate 8, and a rotating plate 10 is installed on the bottom of the fixed plate 9. Multiple evenly distributed abutment blocks 16 are fixed on the bottom of the rotating plate 10. The multiple abutment blocks 16 correspond to the top of the experimental device 11. A moving component for driving the rotating plate 8 to move up and down is set on one side of the annular simulation chamber 1. Based on this, when the experimental device 11 is inserted into the receiving groove, the bottom of the rotating plate 10 is aligned with the top of the experimental device 11. Through the mutual abutment of the multiple abutment blocks 16 with the experimental device 11, the rotating plate 10 can rotate synchronously when the experimental device 11 rotates. The setting of multiple abutment blocks 16 makes the experimental device 11 more stable during testing.

[0030] Furthermore, such as Figure 3 and Figure 5 As shown, the moving component includes an extension block 5 fixed to one side of the annular simulation chamber 1. A storage block 6 is fixed to the top of the extension block 5. A storage slot is formed inside the storage block 6. An adjusting block 25 is set inside the storage slot. The top of the adjusting block 25 is connected to the bottom of one side of the rotating plate 8. A driving component for driving the adjusting block 25 to move vertically is set between the adjusting block 25 and the storage slot. The driving component includes a drive motor 14 fixed to one side of the storage block 6. A fixing slot is formed on one side of the storage slot. A gear 26 is installed inside the fixing slot. The output end of the drive motor 14 extends into the fixing slot and is connected to the gear 26. A rack 27 that meshes with the gear 26 is installed on one side of the adjusting block 25. The two sides of the adjusting block 25... Each component is fixed with a movable plate. The storage block 6 has openings on both sides for the movable plate to move. The movable plate extends to one side of the opening and is fixed with a linkage plate 15. Based on this, the drive motor 14 drives the gear 26 to rotate. The rotation of the gear 26 drives the rack 27 to move. The movement of the rack 27 drives the adjusting block 25 to move vertically in the storage slot. The movement of the adjusting block 25 drives the baffle 7 to move. The movement of the baffle 7 drives the rotating plate 8 to move synchronously. The movement of the rotating plate 8 causes the fixed plate 9 to drive the rotating plate 10 to move. This allows the distance between the rotating plate 10 and the experimental equipment 11 to be adjusted, so that the rotating plate 10 can contact the experimental equipment 11.

[0031] Furthermore, such as Figure 4As shown, the rotating assembly includes a baffle 7 fixed to the top of the adjusting block 25. Two support seats 17 are fixed to the top of the baffle 7, and a fixed shaft 18 is installed between the two support seats 17. A rotating block 19 is installed on the outer wall of the fixed shaft 18. The rotating block 19 is fixed to the bottom of one side of the rotating plate 8. Two mounting blocks 20 are fixed to the bottom of the rotating plate 8. Each mounting block 20 has an arc groove at its bottom that mates with the support seat 17. A positioning component for positioning the rotating plate 8 is provided on one side of the top of the baffle 7. Based on this, pulling the rotating... Plate 8 drives rotating block 19 to rotate on the outer wall of fixed shaft 18. The rotation of rotating block 19 drives rotating plate 8 to rotate on top of baffle 7 around fixed shaft 18. The rotation of rotating plate 8 causes fixed disk 9 to drive rotating disk 10 to rotate. The rotation of rotating disk 10 separates it from experimental equipment 11. After the rotating disk 10 is separated from experimental equipment 11, it is convenient for experimental equipment 11 to be placed and removed in the experimental chamber, and it is convenient to replace different experimental equipment 11 for testing.

[0032] Furthermore, for example Figure 4 As shown, the positioning assembly includes a support frame 21 fixed to one side of the top of the baffle 7. Fixing plates 22 are fixed to both sides of the top of the support frame 21. Insert plates 23 are inserted into the top of the two fixing plates 22, and a groove for the rotating plate 8 to abut between the two fixing plates 22 is provided. A mounting plate is fixed to the bottom of the insert plate 23, and a bolt 24 is screwed between the mounting plate and one of the fixing plates 22. By screwing the bolt 24, the mounting plate is separated from one of the fixing plates 22. Then, the insert plate 23 is pulled to separate from the other fixing plate 22. Once the insert plate 23 is moved to the outside of the two fixing plates 22, the user can easily rotate the rotating plate 8. Similarly, the rotated plate 8 can be positioned after rotation, making it more stable during operation.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A downhole annular particle erosion experiment device, characterized in that, Include: Annulus simulation warehouse (1), the inside of the experimental cavity is provided with experimental equipment (11), and the inner wall of the experimental cavity is provided with particle erosion arc groove (12); Test mechanism, the test mechanism is located at the upper and lower ends of the annulus simulation warehouse (1) and is used for testing the experimental equipment (11), the test mechanism includes receiving assembly, pressing assembly and rotating assembly, the receiving assembly is located at the bottom of the annulus simulation warehouse (1) and is used for receiving the experimental equipment (11), the pressing assembly is located at the top of the annulus simulation warehouse (1) and is used for pressing the experimental equipment (11), the rotating assembly is located in the inside of the pressing assembly and is used for rotating the pressing assembly.

2. The apparatus of claim 1, wherein: The receiving assembly includes a bottom plate (4) fixed at the bottom of the annulus simulation warehouse (1), the top of the bottom plate (4) is provided with a receiving groove for inserting the experimental equipment (11), the outer wall of the receiving groove is provided with a plurality of uniformly distributed fixing grooves, a plurality of roller shafts (28) are installed in the inside of the fixing grooves, a plurality of roller shafts (28) correspond to the outer wall of the experimental equipment (11), a plurality of through holes (13) are uniformly distributed in the inside of the bottom plate (4), and the through holes (13) are matched with the experimental cavity.

3. The apparatus of claim 1, wherein: The pressing assembly includes a rotating plate (8) arranged at the top of the annulus simulation warehouse (1), one side of the rotating plate (8) is fixed with a fixed disc (9), the bottom of the fixed disc (9) is provided with a rotating disc (10), the bottom of the rotating disc (10) is fixed with a plurality of uniformly distributed abutting blocks (16), a plurality of abutting blocks (16) correspond to the top of the experimental equipment (11), and one side of the annulus simulation warehouse (1) is provided with a moving assembly for driving the rotating plate (8) to move up and down.

4. The apparatus of claim 3, wherein: The moving assembly includes an extension block (5) fixed on one side of the annulus simulation warehouse (1), the top of the extension block (5) is fixed with a receiving block (6), the inside of the receiving block (6) is provided with a receiving groove, the inside of the receiving groove is provided with an adjusting block (25), the top of the adjusting block (25) is connected with the bottom of one side of the rotating plate (8), and the adjusting block (25) and the receiving groove are provided with a driving assembly for driving the adjusting block (25) to move vertically.

5. The apparatus of claim 4, wherein: The driving assembly includes a driving motor (14) fixed on one side of the receiving block (6), one side of the inside of the receiving groove is provided with a fixing groove, the inside of the fixing groove is provided with a gear (26), the output end of the driving motor (14) extends to the inside of the fixing groove and is connected with the gear (26), one side of the adjusting block (25) is provided with a rack (27) engaged with the gear (26), both sides of the adjusting block (25) are fixed with a moving plate, both sides of the receiving block (6) are provided with an opening groove for the movement of the moving plate, and one side of the moving plate extending to the opening groove is fixed with a linkage plate (15).

6. The downhole annular particle erosion experiment device according to claim 4, characterized in that: The rotating assembly includes the baffle (7) fixed on the top of the adjusting block (25), the top of the baffle (7) is fixed with two supporting seats (17), the fixed shaft (18) is installed between the two supporting seats (17), the outer wall of the fixed shaft (18) is installed with the rotating block (19), the rotating block (19) is fixed with one side of the bottom of the rotating plate (8), the bottom of the rotating plate (8) is fixed with two mounting blocks (20), the bottom of the two mounting blocks (20) is provided with the arc groove matched with the supporting seat (17), and the top of the baffle (7) is provided with the positioning assembly for positioning the rotating plate (8).

7. The apparatus of claim 6, wherein: The positioning assembly includes the supporting frame (21) fixed on one side of the top of the baffle (7), the top of the supporting frame (21) is fixed with the fixed plate (22) on both sides, the top of the two fixed plates (22) is inserted with the plug plate (23), the groove for the rotating plate (8) is arranged between the two fixed plates (22), the bottom of the plug plate (23) is fixed with the mounting plate, and the bolt (24) is screwed between the mounting plate and one of the fixed plates (22).

8. The downhole annular particle erosion experiment device according to claim 1, characterized in that: The outer wall of the annulus simulation bin (1) is fixed with the fixed sleeve (2), the outer wall of the fixed sleeve (2) is fixed with a plurality of uniformly distributed supporting legs (3), and the bottom of the plurality of supporting legs (3) is installed with the supporting disc.

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