Underground tubular column corrosion monitoring device

Abstract

The utility model provides an underground tubular column corrosion monitoring device, which comprises a shell, a first connecting piece, a second connecting piece and a third connecting piece, the shell is used for being sleeved on the outer side of a tubular column to form a cavity, and the two side edges of the shell are respectively provided with the first connecting piece; the number of the second connecting pieces is one pair, and the second connecting pieces are detachably connected with the first connecting pieces; the quick disassembly mechanism is arranged between the first connecting piece and the second connecting piece so as to realize quick disassembly and assembly between the first connecting piece and the second connecting piece; the monitoring mechanism is arranged in the shell and penetrates through the shell to the outside of the shell so as to achieve corrosion monitoring of the environment where the tubular column is located. According to the utility model, the first connecting piece and the second connecting piece are quickly disassembled and assembled to realize quick disassembly and assembly of the shell and the tubular column, and when the position of the shell relative to the tubular column needs to be replaced, the shell and the tubular column can be quickly disassembled and assembled to realize adjustment of the relative position of the shell and the tubular column.

Description

Technical Field

[0001] This utility model relates to the field of corrosion monitoring technology, specifically to a downhole tubing corrosion monitoring device. Background Technology

[0002] A downhole tubing corrosion monitoring device is used to monitor the corrosion status of downhole tubing (such as tubing and casing) in oil and gas wells. By installing corrosion sensors or probes to monitor the corrosion rate of the tubing, corrosion problems can be detected promptly, ensuring the safety and reliability of downhole equipment, extending its service life, and reducing maintenance costs. Chinese Patent (Publication No. CN118049210A) discloses a corrosion monitoring device for downhole tubing. This device uses U-shaped clips and lugs to selectively fix the corrosion monitoring device on the tubing stub, enabling simultaneous monitoring of different locations on the stub. However, since this monitoring device is also affected by corrosion, it requires regular maintenance and inspection. Furthermore, it cannot be quickly disassembled to ensure rapid separation from the tubing during maintenance or to change its position on the tubing when monitoring different locations. Therefore, this utility model proposes a downhole tubing corrosion monitoring device to improve upon these problems. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the defect of existing downhole tubing corrosion monitoring devices that cannot achieve rapid disassembly and assembly with the tubing, thereby providing a downhole tubing corrosion monitoring device.

[0004] To address the aforementioned problems, this utility model provides a downhole tubing corrosion monitoring device, comprising:

[0005] A housing, which is used to be fitted onto the outside of the tubular column to form a cavity, and a first connecting member is provided on each of the two sides of the housing;

[0006] A second connector is provided, and a pair of second connectors are provided, and the second connector and the first connector are detachably connected;

[0007] A quick-release mechanism is provided between the first connector and the second connector to enable quick assembly and disassembly between the first connector and the second connector;

[0008] The monitoring mechanism is located inside the housing and extends through the housing to the outside of the housing to monitor the corrosion of the environment in which the tubing is located.

[0009] Preferably, a sealing layer is provided on the side of the housing that abuts against the tubing column, and the sealing layer abuts against the outer wall of the tubing column.

[0010] Preferably, the shapes of the first connector and the second connector are adapted to the column, and the first connector and the second connector are respectively provided with extended sides on the sides that are close to each other, and the extended sides of the first connector and the second connector abut against each other;

[0011] The first connector has a slot on the side of its extended edge near the second connector, and the second connector has a block on its extended edge that is adapted to the slot, the block engaging with the slot.

[0012] Preferably, the extended sides of the first connector and the second connector are provided with corresponding alignment grooves, and the quick-release mechanism is disposed in the alignment grooves of the first connector and the second connector.

[0013] Preferably, the quick-release mechanism includes: a first connecting block and a second connecting block, the first connecting block and the second connecting block being detachably connected, and the first connecting block and the second connecting block being respectively disposed in the alignment groove of the first connecting member and the second connecting member;

[0014] The first connecting block has a rotating part at the end away from the second connecting block, and a rotating rod is provided inside the rotating part. The second connecting block has a slot at the end away from the first connecting block. An insert is also provided between the first connecting block and the second connecting block. One end of the insert is rotatably connected to the rotating rod, and the other end of the insert is inserted into the slot.

[0015] The bottom of the slot is provided with a limiting groove facing away from the second connecting block. The side of the insert block facing away from the second connecting block is provided with a limiting block that matches the limiting groove. The insert block is engaged with the limiting groove through the limiting block. When the insert block and the limiting block slide towards the bottom of the slot, the insert block and the limiting block are slidably connected to the slot.

[0016] Preferably, a torsion spring is provided on the rotating rod, and the two ends of the torsion spring abut against the insert block and the first connecting member, respectively.

[0017] Preferably, the monitoring mechanism is used to monitor downhole tubing corrosion, and the housing is provided with a through hole for the probe of the monitoring mechanism to penetrate to the outside of the housing.

[0018] The downhole tubing corrosion monitoring device provided by this utility model has the following beneficial effects:

[0019] 1. This utility model uses a shell sleeved on the outside of the tube column. The connection between the two sides of the shell and the first connecting member can be in the form of welding or bonding. A pair of second connecting members are provided. The second connecting members are sleeved on the outside of the tube column in the same way as the first connecting members. The first connecting members and the second connecting members can be quickly disassembled and assembled to realize the quick disassembly and assembly of the shell and the tube column. When it is necessary to change the position of the shell relative to the tube column, the relative position of the shell and the tube column can be quickly disassembled and assembled to adjust the relative position of the shell and the tube column.

[0020] 2. This utility model also uses a quick-release mechanism to install the first connecting block and the second connecting block in the alignment grooves of the first connecting piece and the second connecting piece, respectively. The connection method can be adhesive, welding or bolt connection. When the first connecting piece and the second connecting piece abut, the first connecting block and the second connecting block abut. When quickly assembling and disassembling the first connecting piece and the second connecting piece, taking installation as an example, let the insert and the limiting block at one end of the insert slide in the slot toward the bottom of the slot. Then, operate the insert to rotate around the rotating rod as the center, so that the limiting block rotates into the limiting groove. At this time, the insert and the limiting block are stuck in the limiting groove and the bottom of the slot, thus completing the fixing of the first connecting block and the second connecting block by the insert. When disassembly is required, the operation can be reversed.

[0021] 3. This utility model also adds a torsion spring so that when the limiting block and the insert block are in the slot and the limiting groove, the torsion spring acts between the insert block and the first connecting member to keep the insert block from rotating arbitrarily around the center of the rotating rod, thus preventing the insert block from detaching. When disassembly is required, only external force needs to be applied to the torsion spring to operate the insert block and the slot to rotate around the rotating rod. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the assembly of this utility model;

[0023] Figure 2 This is a schematic diagram of the quick-release mechanism of this utility model.

[0024] Figure 3 This is a schematic diagram of the through-hole structure installation of this utility model;

[0025] Figure 4 This is a schematic diagram of the installation of the sealing layer structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the installation of the card block structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the insertion block structure installation of this utility model;

[0028] Figure 7 This is a schematic diagram of the installation of the torsion spring structure of this utility model.

[0029] The reference numerals in the attached figures are as follows:

[0030] 1. Housing; 2. First connector; 3. Second connector; 5. Extension edge; 6. Alignment groove; 7. First connecting block; 8. Second connecting block; 9. Rotating part; 10. Rotating rod; 11. Slot; 12. Insert block; 13. Limiting groove; 14. Limiting block; 15. Torsion spring; 16. Through hole; 17. Slot; 18. Locking block; 19. Sealing layer. Detailed Implementation

[0031] like Figure 1-7 As shown, this utility model provides a downhole tubing corrosion monitoring device, which includes:

[0032] The housing 1 is used to be fitted onto the outside of the column to form a cavity, and the two sides of the housing 1 are respectively provided with first connecting members 2;

[0033] The second connector 3 is provided in a pair, and the second connector 3 and the first connector 2 are detachably connected.

[0034] A quick-release mechanism is provided between the first connector 2 and the second connector 3 to enable quick assembly and disassembly between the first connector 2 and the second connector 3;

[0035] A monitoring mechanism is installed inside the housing 1 and extends through the housing 1 to the outside of the housing 1 to monitor corrosion in the environment where the tubing is located. For example... Figure 1-7 As shown, a downhole pipe corrosion monitoring device is installed on the pipe string. As the pipe string descends into the well, it monitors the corrosion of the pipe string during use. The monitoring mechanism can be a commercially available SENNR-2848 buried pipeline anti-corrosion layer detector, which is installed inside a housing 1 with a probe extending through the housing 1 to monitor the corrosion of the environment where the pipe string is located. The housing 1 is fitted over the outside of the pipe string. The connection between the two sides of the housing 1 and the first connecting member 2 can be by welding or bonding. A pair of second connecting members 3 are provided. The second connecting members 3, like the first connecting members 2, are fitted over the outside of the pipe string. The first connecting members 2 and the second connecting members 3 can be quickly disassembled and assembled to achieve quick disassembly and assembly between the housing 1 and the pipe string, and to adjust the relative position of the housing 1 and the pipe string when it is necessary to change the position of the housing 1 relative to the pipe string.

[0036] In some embodiments, a sealing layer 19 is provided on the side of the housing 1 that abuts against the tubing column, and the sealing layer 19 abuts against the outer wall of the tubing column. For example... Figure 1-7 As shown, a sealing layer 19 is provided on one side of the housing 1 that abuts against the tubing. The sealing layer 19 can be a rubber ring to increase the friction and sealing effect between the housing 1 and the tubing.

[0037] In some embodiments, the shapes of the first connector 2 and the second connector 3 are adapted to the column. Extension edges 5 are respectively provided on the sides of the first connector 2 and the second connector 3 that are close to each other, and the extension edges 5 of the first connector 2 and the second connector 3 abut against each other. A slot 17 is provided on the side of the extension edge 5 of the first connector 2 that is close to the second connector 3, and a locking block 18 adapted to the slot 17 is provided on the extension edge 5 of the second connector 3. The locking block 18 and the slot 17 engage. Figure 1-7 As shown, the shapes of the first connector 2 and the second connector 3 are adapted to the column. The extended edges 5 of the first connector 2 and the second connector 3 on the side that are close to each other abut against each other. The first connector 2 and the second connector 3 are engaged by the slot 17 and the block 18 to achieve partial connection and alignment, which can ensure that the first connector 2 and the second connector 3 are aligned.

[0038] In some embodiments, the extended edges 5 of the first connector 2 and the second connector 3 are provided with corresponding alignment grooves 6, and the quick-release mechanism is disposed within the alignment grooves 6 of the first connector 2 and the second connector 3. For example... Figure 1-7 As shown, the first connector 2 and the second connector 3 are provided with alignment grooves 6 at corresponding positions. A quick-release mechanism can be provided in the alignment grooves 6. The two parts of the quick-release mechanism are respectively installed in the alignment grooves 6 of the first connector 2 and the second connector 3. The connection method can be adhesive or bolt connection. When the first connector 2 and the second connector 3 are properly aligned, the quick-release mechanism can quickly realize the assembly and disassembly.

[0039] In some embodiments, the quick-release mechanism includes: a first connecting block 7 and a second connecting block 8, which are detachably connected. The first connecting block 7 and the second connecting block 8 are respectively disposed in the alignment grooves 6 of the first connecting member 2 and the second connecting member 3. A rotating part 9 is provided at the end of the first connecting block 7 away from the second connecting block 8, and a rotating rod 10 is disposed in the rotating part 9. A slot 11 is provided at the end of the second connecting block 8 away from the first connecting block 7. A plug block 12 is also provided, one end of which is rotatably connected to the rotating rod 10, and the other end of which is inserted into the slot 11. A limiting groove 13 is provided at the bottom of the slot 11 facing away from the second connecting block 8. A limiting block 14, adapted to the limiting groove 13, is provided on the side of the plug block 12 facing away from the second connecting block 8. The plug block 12 is engaged with the limiting groove 13 via the limiting block 14, and when the plug block 12 and the limiting block 14 slide towards the bottom of the slot 11, they are slidably connected to the slot 11. Figure 1-7As shown, the first connecting block 7 and the second connecting block 8 of the quick-release mechanism are respectively installed in the alignment grooves 6 of the first connecting piece 2 and the second connecting piece 3. The connection method can be adhesive, welding or bolt connection. When the first connecting piece 2 and the second connecting piece 3 abut, the first connecting block 7 and the second connecting block 8 abut. When the first connecting piece 2 and the second connecting piece 3 are quickly disassembled and assembled, taking installation as an example, let the insert 12 and the limiting block 14 at one end of the insert 12 slide in the slot 11 and move closer to the bottom of the slot 11. Then, operate the insert 12 to rotate around the rotating rod 10 as the center, so that the limiting block 14 rotates into the limiting groove 13. At this time, the insert 12 and the limiting block 14 are stuck in the limiting groove 13 and the bottom of the slot 11, thus completing the fixing of the first connecting block 7 and the second connecting block 8 by the insert 12. When disassembly is required, the operation is reversed.

[0040] In some embodiments, a torsion spring 15 is provided on the rotating rod 10, and the two ends of the torsion spring 15 abut against the insert block 12 and the first connecting member 2, respectively. For example... Figure 1-7 As shown, by adding a torsion spring 15, when the limiting block 14 and the insert block 12 are located in the slot 11 and the limiting groove 13, the torsion spring 15 acts between the insert block 12 and the first connecting member 2, keeping the insert block 12 from rotating arbitrarily around the center of the rotating rod 10, and preventing the insert block 12 from disengaging. When disassembly is required, only external force needs to be applied to the torsion spring 15, and the insert block 12 and the slot 11 can be operated to rotate around the rotating rod 10.

[0041] In some embodiments, the monitoring mechanism is used to monitor downhole tubing corrosion, and the housing 1 is provided with a through hole 16 for the probe of the monitoring mechanism to penetrate to the outside of the housing 1. Figure 1-7 As shown, the monitoring agency can use the human body capacitance method to detect corrosion. It is commercially available, model SENNR-2848 buried pipeline anti-corrosion layer detector. It is set inside the housing 1 and the probe is inserted through the through hole 16 to the outside of the housing 1 to realize corrosion monitoring of the environment where the pipe column is located.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A downhole tubing corrosion monitoring device, characterized in that, include: A housing, which is used to be fitted onto the outside of the tubular column to form a cavity, and a first connecting member is provided on each of the two sides of the housing; A second connector is provided, and a pair of second connectors are provided, and the second connector and the first connector are detachably connected; A quick-release mechanism is provided between the first connector and the second connector to enable quick assembly and disassembly between the first connector and the second connector; The monitoring mechanism is located inside the housing and extends through the housing to the outside of the housing to monitor the corrosion of the environment in which the tubing is located; The shapes of the first connector and the second connector are adapted to the column. The first connector and the second connector are respectively provided with extended sides on the sides that are close to each other, and the extended sides of the first connector and the second connector abut against each other. The first connector has a slot on the side of its extended edge near the second connector, and the second connector has a block on its extended edge that is adapted to the slot, the block engaging with the slot. The first connector and the second connector are provided with corresponding alignment grooves on their extended sides, and the quick-release mechanism is disposed in the alignment grooves of the first connector and the second connector; The quick-release mechanism includes: a first connecting block and a second connecting block, which are detachably connected, and the first connecting block and the second connecting block are respectively disposed in the alignment grooves of the first connecting member and the second connecting member; The first connecting block has a rotating part at the end away from the second connecting block, and a rotating rod is provided inside the rotating part. The second connecting block has a slot at the end away from the first connecting block. An insert is also provided between the first connecting block and the second connecting block. One end of the insert is rotatably connected to the rotating rod, and the other end of the insert is inserted into the slot. The bottom of the slot is provided with a limiting groove facing away from the second connecting block. The side of the insert block facing away from the second connecting block is provided with a limiting block that matches the limiting groove. The insert block is engaged with the limiting groove through the limiting block. When the insert block and the limiting block slide towards the bottom of the slot, the insert block and the limiting block are slidably connected to the slot. A torsion spring is provided on the rotating rod, and the two ends of the torsion spring abut against the insert block and the first connecting member, respectively.

2. The downhole tubing corrosion monitoring device according to claim 1, characterized in that: Each side of the housing that abuts against the tubing column is provided with a sealing layer, and the sealing layer abuts against the outer wall of the tubing column.

3. The downhole tubing corrosion monitoring device according to claim 1, characterized in that: The monitoring mechanism is used to monitor downhole tubing corrosion. The housing is provided with a through hole for the probe of the monitoring mechanism to penetrate to the outside of the housing.

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