Coiled tubing corrosion simulation equipment

Abstract

The utility model provides coiled tubing corrosion simulation equipment, and belongs to the technical field of petroleum and natural gas engineering. The coiled tubing corrosion simulation equipment comprises a simulation box and a separation simulation mechanism, a separation plate is installed in the simulation box, a pressing plate is installed at the top of the simulation box, a separation opening is formed in the tops of the simulation box and the separation plate, a separation groove is formed in the inner wall of the separation opening, and a separation sleeve is movably connected to the interior of the separation opening; through the arrangement of the separation simulation mechanism, when the separation plate is matched with the simulation box to work, a space for placing and penetrating the separation plate is provided for the oil pipe, and meanwhile, the separation plate and the oil pipe are subjected to separation, contact and sealing work; the condition that separation corrosion simulation is difficult to carry out on one oil pipe sample when the simulation box works is avoided, so that the convenience and the comparison effect of oil pipe corrosion simulation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas engineering, and more specifically, to a coiled tubing corrosion simulation device. Background Art

[0002] Coiled tubing is a pipeline device widely used in the oil and gas industry, usually used to transport oil and gas resources. Coiled tubing is usually made of materials with high strength and high corrosion resistance, such as hardened steel or special steels with high corrosion resistance. They are usually a continuous steel pipe, and a long pipeline is formed by connecting multiple pipe segments. During the production and processing of coiled tubing, a top-down simulation device is used to perform corrosion simulation operations on the tubing. The corrosion simulation device is an experimental device used to simulate the corrosion situation of the tubing. It performs corrosion simulation work on the tubing through the corrosion simulation solution installed inside. The corrosion simulation device is used to evaluate the corrosion resistance of the tubing material under simulated actual working conditions and provides an important reference for tubing design. Since various corrosion situations need to be tested during the corrosion simulation process, it is necessary to perform diverse simulation operations on the tubing.

[0003] In the related art, during the use of the corrosion simulation device, generally, multiple identical tubing samples are placed into different corrosion simulation solutions for corrosion simulation operations under different conditions for use.

[0004] However, currently during the use of the corrosion simulation device, due to the method of placing multiple identical tubing samples into different corrosion simulation solutions for simulation, it is necessary to consume multiple tubing samples, which is inconvenient for overall comparison after corrosion simulation, and it is necessary to operate on multiple tubing samples, affecting the convenience and comparison effect of tubing corrosion simulation. Summary of the Utility Model

[0005] To make up for the above deficiencies, the utility model provides a coiled tubing corrosion simulation device that overcomes the above technical problems or at least partially solves the above problems.

[0006] The utility model is implemented as follows:

[0007] The utility model provides a coiled tubing corrosion simulation device, including a simulation box, a partition plate is installed inside the simulation box, and a pressing plate is installed on the top of the simulation box;

[0008] A partition simulation mechanism, the partition simulation mechanism includes;

[0009] A partition opening; the partition opening is opened at the top of the simulation box and the partition plate, and partition grooves are opened on the inner wall of the partition opening;

[0010] Separation sleeve; the separation sleeve is movably connected inside the separation opening, and the bottom of the separation sleeve is located inside the separation groove;

[0011] Connection groove; the connection grooves are opened at the four corners of the top of the simulation box, and connection frames located inside the connection grooves are fixedly connected to the four corners of the pressing plate;

[0012] Deformation support mechanism; the deformation support mechanism is movably connected inside the separation groove.

[0013] In a preferred embodiment, the deformation support mechanism includes support rods, support grooves and springs. The support rods are movably connected inside the separation groove. There are several support rods, and the several support rods are equidistantly distributed. The top of the support rods contacts the top of the inner wall of the separation sleeve. The support grooves are opened at the bottom of the support rods, and the springs are arranged inside the support grooves. One end of the spring is fixedly connected to the inner wall of the support groove, and the other end of the spring is fixedly connected to the inner wall of the separation groove.

[0014] In a preferred embodiment, stable grooves are opened at the four corners of the support rods, and a stable block is movably connected to the bottom inside the stable grooves. The outside of the stable block is fixedly connected to the inner wall of the separation groove.

[0015] In a preferred embodiment, positioning frames located inside the connection frames are fixedly connected to the front side and the rear side of the pressing plate, and a positioning seat is movably connected to the left side of the positioning frame.

[0016] In a preferred embodiment, positioning grooves are opened on the left side of the positioning frame. There are several positioning grooves, and the several positioning grooves are equidistantly distributed. The right side of the positioning seat is located inside the positioning grooves.

[0017] In a preferred embodiment, moving grooves located inside the connection grooves are opened on the front side and the rear side of the top of the simulation box, and the bottom of the positioning frame is located inside the moving grooves.

[0018] In a preferred embodiment, connection shells located on the left side of the connection grooves are fixedly connected to both sides of the top of the simulation box. A connection seat is movably connected inside the connection shell, and the top of the connection seat is fixedly connected to the bottom of the positioning seat.

[0019] In a preferred embodiment, a magnetic strip is inlaid and connected to the bottom of the connection seat, and a magnetic attraction strip magnetically connected to the magnetic strip is fixedly connected to the bottom of the inner wall of the connection shell.

[0020] A coiled tubing corrosion simulation device provided by the present utility model has the following beneficial effects:

[0021] 1. By setting up a partition simulation mechanism, when the partition plate cooperates with the simulation box, it can provide a space for the oil pipe to penetrate through the partition plate, and at the same time, carry out segmented contact sealing between the partition plate and the oil pipe, avoiding the situation that it is difficult to carry out segmented corrosion simulation on a single oil pipe sample when the simulation box is working. Therefore, the convenience and comparison effect of oil pipe corrosion simulation are improved.

[0022] 2. By setting up a deformation support mechanism, when the split sleeve cooperates with the partition plate, it can support the split sleeve at multiple points, avoiding the situation that it is difficult to contact the oil pipe according to the size of the oil pipe after the split sleeve contacts the oil pipe. Therefore, the deformation fitting effect of the split sleeve is improved.

[0023] 3. By setting up a stable groove and a stable block, when the spring cooperates with the support rod, it can connect and stabilize between the support rod and the partition groove, avoiding the situation that the support rod is displaced during operation. Therefore, the working stability of the support rod is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0025] Figure 1 is the overall three-dimensional view provided by the embodiment of the present invention;

[0026] Figure 2 is the three-dimensional sectional structure schematic diagram of the simulation box provided by the embodiment of the present invention;

[0027] Figure 3 is the three-dimensional sectional structure schematic diagram of the partition plate provided by the embodiment of the present invention;

[0028] Figure 4 is the three-dimensional sectional structure schematic diagram of the positioning frame provided by the embodiment of the present invention;

[0029] In the figure: 1. Simulation box; 2. Partition plate; 3. Pressing plate; 4. Partition opening; 5. Partition groove; 6. Split sleeve; 7. Connecting groove; 8. Connecting frame; 9. Support rod; 10. Support groove; 11. Spring; 12. Stable groove; 13. Stable block; 14. Positioning frame; 15. Positioning seat; 16. Positioning groove; 17. Activity groove; 18. Connecting shell; 19. Connecting seat; 20. Magnetic strip; 21. Magnetic attraction strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] Referring to Figures 1-4 , the present utility model provides a technical solution: a coiled tubing corrosion simulation device, including a simulation box 1 and a partition simulation mechanism. A partition plate 2 is installed inside the simulation box 1, and a pressing plate 3 is installed on the top of the simulation box 1. When the partition plate 2 cooperates with the simulation box 1, it can provide a space for placing and penetrating the partition plate 2 for the tubing, and at the same time perform a split contact sealing operation between the partition plate 2 and the tubing, avoiding the situation that it is difficult to perform split corrosion simulation on a single tubing sample when the simulation box 1 is working. Therefore, the convenience and comparison effect of tubing corrosion simulation are improved.

[0032] Referring to Figures 1-4, in a preferred embodiment, the separation simulation mechanism includes a separation opening 4 which is opened at the top of the simulation box 1 and the separation plate 2. A separation groove 5 is provided on the inner wall of the separation opening 4. A separation sleeve 6 is movably connected inside the separation opening 4, and the bottom of the separation sleeve 6 is located inside the separation groove 5. Connection grooves 7 are opened at the four corners of the top of the simulation box 1. Connection frames 8 located inside the connection grooves 7 are fixedly connected to the four corners of the pressing plate 3. The deformation support mechanism is movably connected inside the separation groove 5. The mobile oil pipe sample is placed on the top of the separation plate 2, and the pressing plate 3 is moved downward to apply a downward pressure on the oil pipe sample. At this time, the connection frame 8 performs a mobile connection work between the pressing plate 3 and the simulation box 1 through the connection groove 7. At this time, the separation sleeve 6 contacts the oil pipe and deforms along the surface of the oil pipe under the influence of the downward pressure of the oil pipe, so as to separate and contact-seal between the oil pipe and the separation plate 2. Subsequently, the corrosion simulation solution simulating different corrosion conditions is added to the space between different separation plates 2, and the added corrosion simulation liquid is made to contact the oil pipe to perform a variety of corrosion simulation operations on an oil pipe sample. The deformation support mechanism includes a support rod 9, a support groove 10 and a spring 11. The support rod 9 is movably connected inside the separation groove 5. There are several support rods 9, and several support rods 9 are equidistantly distributed. The top of the support rod 9 contacts the top inner wall of the separation sleeve 6. The support groove 10 is opened at the bottom of the support rod 9. The spring 11 is arranged inside the support groove 10. One end of the spring 11 is fixedly connected to the inner wall of the support groove 10, and the other end of the spring 11 is fixedly connected to the inner wall of the separation groove 5. It can perform a multi-point support work on the separation sleeve 6 when the separation sleeve cooperates with the separation plate 2, avoiding the situation that it is difficult for the separation sleeve 6 to contact the oil pipe according to the size of the oil pipe. Therefore, the deformation fitting effect of the separation sleeve 6 is improved.

[0033] Referring to Figures 3-4 , in a preferred embodiment, stability grooves 12 are opened at the four corners of the support rod 9. A stability block 13 is movably connected to the bottom inside the stability groove 12, and the outside of the stability block 13 is fixedly connected to the inner wall of the separation groove 5. It can perform a connection stability work between the support rod 9 and the separation groove 5 when the spring 11 cooperates with the support rod 9, avoiding the situation that the support rod 9 is displaced during operation. Therefore, the working stability of the support rod 9 is improved. Positioning frames 14 located inside the connection frames 8 are fixedly connected to the front and rear sides of the pressing plate 3. A positioning seat 15 is movably connected to the left side of the positioning frame 14. It can perform a positioning support work between the pressing plate 3 and the simulation box 1 when the connection frame 8 cooperates with the pressing plate 3, avoiding the situation that it is difficult to perform support positioning when the pressing plate 3 is used. Therefore, the support positioning convenience of the pressing plate 3 is improved.

[0034] Referring to Figures 2-4, in a preferred embodiment, by providing positioning slots 16 on the left side of the positioning frame 14, a plurality of positioning slots 16 are provided, and the plurality of positioning slots 16 are equidistantly distributed. The right side of the positioning seat 15 is located inside the positioning slot 16. When the positioning seat 15 cooperates with the positioning frame 14, multiple plug-in positioning spaces can be provided for the positioning seat 15, avoiding the situation that it is difficult to support and position the pressing plate 3 at multiple points during the use of the positioning seat 15. Therefore, the support and positioning flexibility of the positioning seat 15 is improved. Activity slots 17 located inside the connecting slot 7 are provided on both the front side and the rear side of the top of the simulation box 1. The bottom of the positioning frame 14 is located inside the activity slot 17. When the positioning frame 14 cooperates with the pressing plate 3, a space for lifting and moving can be provided for the positioning frame 14, avoiding the situation that it is difficult to lift during the use of the positioning frame 14. Therefore, the lifting flexibility of the positioning frame 14 is improved.

[0035] Refer to Figure 4 , in a preferred embodiment, by fixedly connecting connection shells 18 on both sides of the top of the simulation box 1, which are located on the left side of the connecting slot 7, a connection seat 19 is movably connected inside the connection shell 18, and the top of the connection seat 19 is fixedly connected to the bottom of the positioning seat 15. When the positioning seat 15 cooperates with the positioning frame 14, an activity connection work can be carried out between the positioning seat 15 and the simulation box 1, avoiding the situation that it is difficult to effectively position and support between the positioning frame 14 and the simulation box 1 due to the position offset of the positioning seat 15 during operation. Therefore, the connection effect between the positioning seat 15 and the simulation box 1 is improved. A magnetic strip 20 is inlaid and connected to the bottom of the connection seat 19, and a magnetic attraction strip 21 magnetically connected to the magnetic strip 20 is fixedly connected to the bottom of the inner wall of the connection shell 18. When the connection seat 19 cooperates with the positioning seat 15, a magnetic attraction positioning work can be carried out between the positioning seat 15 and the connection shell 18 through the connection seat 19, avoiding the situation that it is difficult to position during the use of the positioning seat 15. Therefore, the positioning stability and convenience of the positioning seat 15 are improved.

[0036] Specifically, the working process or principle of this coiled tubing corrosion simulation device is as follows: When in use, first move the tubing sample and place it on top of the partition plate 2, and then hold the positioning seat 15 and move it to the left to disengage from the positioning groove 16. At this time, the connecting seat 19 moves inside the connecting shell 18 following the positioning seat 15 to perform the moving connection work between the positioning seat 15 and the simulation box 1, and the pressing plate 3 is pressed downward on the tubing sample by moving the positioning frame 14 downward. At this time, the connecting frame 8 moves along the inner wall of the connecting groove 7 following the pressing plate 3 to perform the moving connection work between the pressing plate 3 and the simulation box 1. At this time, the partition sleeve 6 comes into contact with the tubing and deforms along the tubing surface under the influence of the downward pressure of the tubing, to perform the partition contact seal between the tubing and the partition plate 2. During this process, the support rod 9 moves downward under the influence of the deformation force of the partition sleeve 6 to compress the spring 11, and the spring 11 applies a reverse thrust to the partition sleeve 6 through the support rod 9 under the influence of the thrust, so that the partition sleeve 6 tightly contacts and presses against the tubing surface to perform the contact seal work. At this time, the stabilizing block 13 moves inside the stabilizing groove 12 to perform the moving stability work on the support rod 9. Subsequently, hold the positioning frame 14 and move it to the right to enter the positioning groove 16, and apply a positioning support force to the pressing plate 3 through the positioning frame 14 to ensure the downward pressure stability of the pressing plate 3 on the tubing. At the same time, the magnetic strip 20 performs the magnetic attraction positioning work on the positioning seat 15 through the magnetic attraction strip 21. Then, add the corrosion simulation solutions simulating different corrosion conditions to the spaces between different partition plates 2, and make the added corrosion simulation liquid contact the tubing to perform diverse corrosion simulation operations on one tubing sample. After the tubing is corroded and simulated by the corrosion simulation liquid, take out the tubing to compare the different corrosion simulation conditions of the same tubing.

[0037] It should be noted that the simulation box 1 is a device or equipment existing in the prior art, or a device or equipment that can be realized by the prior art. Its power supply, specific composition and principle are clear to those skilled in the art, so no further details will be elaborated.

Claims

1. A coiled tubing corrosion simulation device, comprising a simulation box (1), a partition plate (2) is installed inside the simulation box (1), and a pressure plate (3) is installed on the top of the simulation box (1), characterized in that ； A separation simulation mechanism, the separation simulation mechanism comprising: A partition opening (4); the partition opening (4) is provided at the top of the simulation box (1) and the partition plate (2), and a partition groove (5) is provided on the inner wall of the partition opening (4); A separation sleeve (6); the separation sleeve (6) is movably connected to the interior of the separation opening (4), and the bottom of the separation sleeve (6) is located inside the separation groove (5); A connecting groove (7); the connecting groove (7) is provided at four corners of the top of the simulation box (1); the four corners of the pressing plate (3) are fixedly connected to a connecting frame (8) located inside the connecting groove (7); Deformation support mechanism; the deformation support mechanism is movably connected inside the separation groove (5).

2. A coiled tubing corrosion simulation device according to claim 1, characterized in that: The deformation support mechanism comprises a support rod (9), a support groove (10) and a spring (11); the support rod (9) is movably connected inside the separation groove (5); a plurality of support rods (9) are provided, and the plurality of support rods (9) are distributed at equal distances; the top of the support rod (9) contacts the top of the inner wall of the separation sleeve (6); the support groove (10) is opened at the bottom of the support rod (9); the spring (11) is provided inside the support groove (10); one end of the spring (11) is fixedly connected to the inner wall of the support groove (10); and the other end of the spring (11) is fixedly connected to the inner wall of the separation groove (5).

3. A coiled tubing corrosion simulation device according to claim 2, characterized in that: The four corners of the support rod (9) are each provided with a stabilizing groove (12), the bottom of the interior of the stabilizing groove (12) is movably connected to a stabilizing block (13), and the outer side of the stabilizing block (13) is fixedly connected to the inner wall of the dividing groove (5).

4. The coiled tubing corrosion simulation device according to claim 1, characterized in that: The front and rear sides of the pressing plate (3) are fixedly connected to a positioning frame (14) located inside the connecting frame (8), and the left side of the positioning frame (14) is movably connected to a positioning seat (15).

5. The coiled tubing corrosion simulation device according to claim 4, characterized in that: A positioning groove (16) is provided on the left side of the positioning frame (14), and a plurality of the positioning grooves (16) are provided, and the plurality of positioning grooves (16) are distributed at equal distances, and the right side of the positioning seat (15) is located inside the positioning groove (16).

6. The coiled tubing corrosion simulation device according to claim 4, characterized in that: The front side and the rear side of the top of the simulation box (1) are both provided with a movable groove (17) located inside the connecting groove (7), and the bottom of the positioning frame (14) is located inside the movable groove (17).

7. The coiled tubing corrosion simulation device according to claim 6, characterized in that: Both sides of the top of the simulation box (1) are fixedly connected to a connection shell (18) located on the left side of the connection groove (7), and the interior of the connection shell (18) is movably connected to a connection seat (19), and the top of the connection seat (19) is fixedly connected to the bottom of the positioning seat (15).

8. The coiled tubing corrosion simulation device according to claim 7, characterized in that: The bottom of the connection seat (19) is inlaid with a magnetic strip (20), and the bottom of the inner wall of the connection shell (18) is fixedly connected with a magnetic attraction strip (21) that is magnetically connected to the magnetic strip (20).

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