Oil casing recycling and sorting equipment

Abstract

The utility model relates to the technical field of oil casing recycling equipment, and particularly provides oil casing recycling and sorting equipment which comprises a steel pipe flaw detection mechanism, a waste recycling mechanism, a steel grade analysis mechanism and a steel grade sorting mechanism. The steel pipe flaw detection mechanism, the steel grade analysis mechanism and the steel grade grading mechanism are sequentially arranged on an oil casing conveying path, and the waste recovery mechanism is connected with the steel pipe flaw detection mechanism; the steel grade sorting mechanism comprises a rolling support, a jacking mechanism and a cover plate, the rolling support is obliquely arranged so that the oil sleeve placed on the rolling support can roll, the rolling support comprises at least one groove, the cover plate is arranged on the groove, and the end, away from the rolling direction of the oil sleeve, of the cover plate is rotationally connected with the rolling support and makes contact with the jacking mechanism. The jacking mechanism is arranged on one side of the groove and located below the cover plate, and the jacking mechanism acts to open and close the cover plate. The embodiment aims at solving the problem that in the prior art, the recovery efficiency is low due to the steel mixing phenomenon of the recovered oil casing.

Description

Technical Field

[0001] This application relates to the technical field of oil casing recycling equipment, and more particularly to an oil casing recycling and sorting equipment. Background Technology

[0002] In the field of oil and gas extraction, casing and tubing, as key components of the wellbore structure, endure multiple effects such as formation pressure, fluid corrosion, and mechanical loads over long periods. As global oil and gas field development enters the mid-to-late stages, a large amount of decommissioned casing and tubing resources are generated annually, making their recycling and reuse an important issue for the sustainable development of the industry.

[0003] In related technologies, the oil casing recycling process mainly includes steps such as steel pipe flaw detection, hardness analysis, and graded recycling. Currently, the oil casing recycling process is usually completed manually. However, due to the chaotic steel grades of the steel pipes used for secondary processing and the presence of defects in the pipe body, they need to be inspected separately and manually classified, resulting in low recycling efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide an oil casing and tubing recycling and sorting device, which aims to solve the problem of low recycling efficiency caused by the presence of mixed steel in the recycled oil casing and tubing.

[0005] The technical solution adopted by this application to solve the technical problem is as follows: an oil casing and tubing recycling and sorting device, including a steel pipe flaw detection mechanism, a waste recycling mechanism, a steel grade analysis mechanism, and a steel grade sorting mechanism; the steel pipe flaw detection mechanism, the steel grade analysis mechanism, and the steel grade classification mechanism are sequentially arranged on the oil casing and tubing conveying path, and the waste recycling mechanism is connected to the steel pipe flaw detection mechanism; the steel grade sorting mechanism includes a rolling support, a lifting mechanism, and a cover plate, the rolling support is inclined to make the oil casing and tubing placed on the rolling support roll, the rolling support includes at least one groove, the cover plate is disposed on the groove, and one end away from the rolling direction of the oil casing and tubing is rotatably connected to the rolling support and in contact with the lifting mechanism, the lifting mechanism is disposed on one side of the groove and located below the cover plate, and the lifting mechanism opens and closes the cover plate.

[0006] Optionally, the steel grade analysis mechanism and the waste recycling mechanism are arranged opposite to each other on both sides of the steel pipe flaw detection mechanism, and the steel grade sorting mechanism is arranged opposite to each other on one side of the steel grade analysis mechanism.

[0007] Optionally, the steel pipe flaw detection mechanism includes a magnetic flux leakage detector and a first conveying assembly for driving the oil casing to move axially. The magnetic flux leakage detector is mounted on the first conveying assembly to detect the passing oil casing.

[0008] Optionally, the steel grade analysis mechanism includes a spectrometer, a second conveying component, and a first pushing component, wherein the second conveying component, the first pushing component, and the spectrometer are sequentially arranged on one side of the axial direction of the first conveying component.

[0009] The waste recycling mechanism includes a second pushing component and a waste platform. The second pushing component is located on one side extending along the axial direction of the first conveying component and is located away from the steel grade analysis mechanism. The waste platform is located on the radial side of the second pushing component.

[0010] The lifting mechanism is configured as one of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0011] Optionally, the rolling bracket includes an inclined section and a lifting section connected to each other, the inclined section and the lifting section are arranged alternately, the upper surface height of the inclined section gradually decreases, the upper surface height of the lifting section gradually increases, and a lifting mechanism is provided on the lifting section.

[0012] The lifting mechanism includes a push cylinder and a lifting plate. The lifting plate is rotatably disposed on the side of the rolling bracket. The lifting plate is provided with a slot for supporting the oil casing. The push cylinder is hinged to the lifting plate to drive the lifting plate to reciprocate.

[0013] Optionally, the upper surface of the rolling bracket is covered with a cushioning pad made of elastic material.

[0014] Optionally, the cross-sectional profile of the groove is an inverted trapezoid.

[0015] Compared with the prior art, the embodiments of this application set up a steel pipe flaw detection mechanism, a steel grade analysis mechanism, and a steel grade sorting mechanism on the oil casing conveying path; a waste recycling mechanism is also set up on one side of the steel pipe flaw detection mechanism, so that the recycled oil casing can be automatically inspected for flaws and conveyed to the steel grade analysis mechanism or the waste recycling mechanism according to the test results to achieve preliminary screening and ensure that the recycled steel pipes are free of hidden defects. After the steel grade is detected in the hardness analysis mechanism, the oil casing is conveyed to the steel grade sorting mechanism. The inclined rolling support makes the oil casing roll along the support under the action of gravity. The cover plate flush with the rolling support allows the oil casing to roll directly through. According to the steel grade of the oil casing, the corresponding lifting mechanism is activated to lift the cover plate on the corresponding groove, so that the oil casings of different steel grades fall into the corresponding grooves for classification, which effectively improves the efficiency of oil casing recycling and sorting. Attached Figure Description

[0016] Figure 1 This is a top view of an oil casing and tubing recycling and sorting device according to an embodiment of this application;

[0017] Figure 2This is a front view of the steel grade sorting mechanism in the embodiments of this application;

[0018] Figure 3 This is a schematic diagram of the steel pipe flaw detection mechanism in the embodiments of this application;

[0019] Figure 4 This is a schematic diagram of the waste recycling mechanism in the embodiments of this application;

[0020] Figure 5 This is a schematic diagram of the steel grade analysis mechanism in the embodiments of this application;

[0021] Figure 6 This is a schematic diagram of the steel grade sorting mechanism in the embodiments of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10. Steel pipe flaw detection mechanism; 11. Magnetic flux leakage flaw detector; 12. First conveying assembly; 20. Waste recycling mechanism; 21. Second pushing assembly; 22. Waste platform; 30. Steel grade analysis mechanism; 31. Spectrometer; 32. Second conveying assembly; 33. First pushing assembly; 40. Steel grade sorting mechanism; 41. Rolling support; 411. Inclined section; 412. Lifting section; 42. Lifting mechanism; 43. Cover plate; 44. Groove; 45. Pushing cylinder; 46. Lifting plate. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the referred mechanism or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] Oil casing is a steel pipe used to support the wellbore of oil and gas wells, ensuring the smooth operation of the well during drilling and after completion. Each well requires several layers of casing depending on the drilling depth and geological conditions. After the casing is run into the well, it is cemented. Unlike tubing and drill pipe, it cannot be reused and is a disposable material. Therefore, casing accounts for more than 70% of all oil well tubing consumption. Although used oil casing cannot be reused as wellbore wall material, it can be recycled and cleaned for use in applications with lower requirements for steel pipe quality, thus avoiding resource waste.

[0028] Based on the strength of the steel itself, casing can be divided into different steel grades, such as J55, K55, N80, L80, C90, T95, P110, Q125, V150, etc. Therefore, the steel grades of recycled oil casing are usually not uniform, which increases the difficulty of recycling. Oil casing used in corrosive environments or complex geological environments may also have hidden damage that is not visible to the naked eye during use, making it unusable. Before recycling, it needs to be screened out by manual inspection, which further complicates the recycling process.

[0029] Based on this, such as Figure 1As shown in the embodiment of this application, an oil casing and tubing recycling and sorting device is proposed, including a steel pipe flaw detection mechanism 10, a waste recycling mechanism 20, a steel grade analysis mechanism 30, and a steel grade sorting mechanism 40. The steel pipe flaw detection mechanism 10, the steel grade analysis mechanism 30, and the steel grade grading mechanism are sequentially arranged on the oil casing and tubing conveying path, and the waste recycling mechanism 20 is connected to the steel pipe flaw detection mechanism 10. The steel pipe flaw detection mechanism 10 can detect the oil casing and tubing along its length to find hidden defects. After the steel pipe flaw detection mechanism 10 detects a hidden defect, it sorts the oil casing and tubing. The casing is transferred to the waste recycling unit 20 for sorting. If no hidden damage is detected, the casing is transferred to the steel grade analysis unit 30 for further testing. After the steel grade analysis unit 30 detects the steel grade of the casing, it is transferred to the steel grade sorting unit 40. The steel grade analysis unit 30 drives the corresponding lifting mechanism according to the detected steel grade to open the corresponding cover plate 43, so that the casing rolls into the groove 44 of the corresponding steel grade under the action of gravity. This realizes the whole process of casing recycling, which greatly improves the recycling efficiency. Moreover, the casing of different steel grades is accurately classified, which is convenient for subsequent reuse.

[0030] It is understood that the various mechanisms in this embodiment can be relatively independent or interconnected to form an integrated structure. The focus of this application is on the combination of the steel pipe flaw detection mechanism 10, the waste recycling mechanism 20, the steel grade analysis mechanism 30, and the steel grade sorting mechanism 40, which realizes the conveying path of the steel pipe flaw detection mechanism 10, the waste recycling mechanism 20, or the steel pipe flaw detection mechanism 10, the steel grade analysis mechanism 30, and the steel grade sorting mechanism 40.

[0031] In this embodiment, the oil casing can be transported to the steel pipe flaw detection mechanism 10 by manual labor or vehicle assistance. Alternatively, an automated feeding line can be established to perform hot cleaning, straightening, and rust removal processes on the oil casing before flaw detection, thereby further improving the availability of oil casing recycling.

[0032] like Figure 2 and Figure 6As shown, the steel grade sorting mechanism 40 includes a rolling support 41, a lifting mechanism 42, and a cover plate 43. The rolling support 41 is inclined to allow the oil casing placed on the rolling support 41 to roll. The rolling support 41 includes at least one groove 44. The cover plate 43 is disposed on the groove 44, and one end away from the rolling direction of the oil casing is rotatably connected to the rolling support 41 and in contact with the lifting mechanism. The lifting mechanism is disposed on one side of the groove 44 and located below the cover plate 43. The lifting mechanism opens and closes the cover plate 43. The rolling support 41 has several grooves 44 along the rolling direction of the casing. Each groove 44 is used to accommodate casing of a single steel grade. When the casing passes the steel grade analysis mechanism 30, the steel grade analysis mechanism 30 controls the lifting mechanism on one side of the corresponding hardness groove 44 to open the cover plate 43, allowing the casing to roll into the groove 44. Since the end of the cover plate 43 away from the rolling direction of the casing is rotatably connected to the rolling support 41, when the cover plate 43 flips upward, it will form a barrier on one side of the groove 44, blocking the rolling casing and preventing it from crossing the groove 44, thus ensuring the reliability of the recovery process.

[0033] In this embodiment, the rolling support 41 can be a number of independent and parallel narrow supports, or it can be an integrated, wider support, so that the oil casing is at the same horizontal height at all points when it rolls.

[0034] like Figure 1 As shown, in one embodiment, the steel grade analysis unit 30 and the waste recycling unit 20 are arranged opposite each other on both sides of the steel pipe flaw detection unit 10, and the steel grade sorting unit 40 is arranged opposite each other on one side of the steel grade analysis unit 30. By making the steel grade analysis unit 30 and the waste recycling unit 20 relatively independent, recyclable oil casing and tubing and oil casing and tubing with hidden defects can be stored separately, which facilitates the rapid transportation of oil casing and tubing by staff and improves the workshop recycling efficiency.

[0035] In another embodiment, the waste recycling mechanism 20 can be set as the next process after the steel grade analysis mechanism 30. By controlling the conveyor belt, the oil casing with hidden damage can be directly conveyed to the waste recycling mechanism 20 for recycling.

[0036] like Figure 3As shown, in one embodiment, the steel pipe flaw detection mechanism 10 includes a magnetic flux leakage (MF) detector 11 and a first conveying assembly 12 for driving the oil casing pipe to move axially. The MF detector 11 is mounted on the first conveying assembly 12 to detect the passing oil casing pipe. The MF detector 11 enables non-contact detection. MF leakage detection refers to the phenomenon where, after a ferromagnetic material is magnetized, a leakage magnetic field is formed on its surface due to defects on or near the surface of the specimen. Changes in the leakage magnetic field can be detected to identify defects. The leakage magnetic field occurs when a material has defects that cut magnetic lines of force. These defects or changes in the material's microstructure cause changes in its permeability. Because the permeability of the defects is very small and the magnetic reluctance is very large, the magnetic flux in the magnetic circuit is distorted, and the direction of the magnetic induction lines changes. Besides some magnetic flux directly bypassing the defects or the interior of the material, some magnetic flux leaks to the air above the material surface, bypassing the defects and re-entering the material, thus forming a leakage magnetic field on the material surface. The magnetic flux leakage detector 11 is fixed in position. The first conveying component 12 drives the oil casing to enter the magnetic flux leakage detector 11 axially, so that the magnetic flux leakage detector 11 can detect all parts of the oil casing and ensure the detection results.

[0037] like Figure 5 As shown, the steel grade analysis mechanism 30 includes a spectrometer 31, a second conveying assembly 32, and a first pushing assembly 33. The second conveying assembly 32, the first pushing assembly 33, and the spectrometer 31 are sequentially arranged on one side of the axial direction of the first conveying assembly 12. Both the second conveying assembly 32 and the first pushing assembly 33 are equipped with drive wheels for mounting the oil casing. The second conveying assembly 32 and the first pushing assembly 33 can be arranged sequentially or alternately. The oil casing is conveyed to a predetermined station by the second conveying assembly 32. The spectrometer 31, fixed at the predetermined station, performs spectral analysis on the oil casing to obtain its chemical composition, thereby obtaining the parameters and steel grade of the oil casing.

[0038] In this embodiment, the first conveying mechanism and the second conveying mechanism can be several independent motors and transmission wheels with V-grooves. The oil casing is placed on the V-grooves, and the motor drives the transmission wheels to rotate in the same direction, causing the oil casing to move axially. The first conveying mechanism and the second conveying mechanism can also be an integrated conveyor belt structure, such as the transmission wheel driving the belt for transmission. The specific structure can be adjusted by those skilled in the art according to their needs.

[0039] like Figure 4As shown, the waste recycling mechanism 20 includes a second pushing component 21 and a waste platform 22. The second pushing component 21 is located on one side extending along the axial direction of the first conveying component 12 and away from the steel grade analysis mechanism 30. The waste platform 22 is located on the radial side of the second pushing component 21. The second pushing component 21 is equipped with a drive wheel for mounting the oil casing. The second pushing component 21 pushes the oil casing on the drive wheel onto the horizontally radial waste platform 22, facilitating unified collection by workers for subsequent processing.

[0040] In the above embodiments, the first pushing component 33 and the second pushing component 21 can be a pushing cylinder disposed on one side of the oil casing, which rolls the oil casing radially onto the waste platform 22 by applying a lateral force to it. Alternatively, the first pushing component 33 and the second pushing component 21 can be a lifting cylinder disposed at the bottom of the oil casing, which lifts the oil casing from one side and rolls it onto the waste platform 22.

[0041] In this embodiment, the lifting mechanism is configured as one of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. The lifting mechanism can be directly connected to the cover plate 43, or it can be connected via a movable bracket.

[0042] like Figure 2 As shown, in one embodiment, the rolling support 41 includes an inclined section 411 and a lifting section 412 connected to each other. The inclined section 411 and the lifting section 412 are alternately arranged. The upper surface height of the inclined section 411 gradually decreases, while the upper surface height of the lifting section 412 gradually increases. A lifting mechanism is provided on the lifting section 412. The inclined section 411 can form an inclined surface to allow the oil casing to roll under the action of gravity. By providing the lifting section 412 and the lifting mechanism, the oil casing can be lifted from a lower position to a higher position to obtain gravitational potential energy, allowing it to continue rolling along the rolling support 41.

[0043] In this embodiment, the height change slope of the lifting section 412 is greater than that of the tilting section 411, and the oil casing is rapidly raised under the action of the lifting mechanism.

[0044] Specifically, the lifting mechanism includes a push cylinder 45 and a lifting plate 46. The lifting plate 46 is rotatably mounted on the side of the rolling bracket 41. The lifting plate 46 has a slot for supporting the oil casing. The push cylinder 45 is hinged to the lifting plate 46 to drive the lifting plate 46 to reciprocate. The slot on the lifting plate 46 is V-shaped or U-shaped. When the lifting plate 46 swings to one side, the slot is flush with the lifting section 412, allowing the oil casing to fall into the middle of the slot. The push cylinder 45 is then activated, causing the lifting plate 46 to swing around the rotation axis, thus raising the height of the oil casing in the slot.

[0045] In one embodiment, the upper surface of the rolling support 41 is covered with a cushioning pad made of elastic material. The cushioning pad can prevent the oil sleeve from sliding and falling during rolling, and can also prevent the oil sleeve from being damaged by impact when it enters the groove 44.

[0046] In one embodiment, the cross-sectional profile of the groove 44 is an inverted trapezoid. The upper opening of the inverted trapezoid is wider, while the bottom is narrower, ensuring that the steel pipe falls more smoothly into the groove 44.

[0047] like Figure 2 As shown, in this embodiment, the cross-sectional profile of the groove 44 is an inverted right trapezoid, and the hypotenuse of the trapezoid is located on the higher side of the rolling bracket 41.

[0048] This embodiment of the application sets up a steel pipe flaw detection mechanism, a steel grade analysis mechanism, and a steel grade sorting mechanism on the oil casing conveying path; a waste recycling mechanism is also set up on one side of the steel pipe flaw detection mechanism, so that the recycled oil casing can be automatically inspected for flaws and conveyed to the steel grade analysis mechanism or the waste recycling mechanism according to the test results to achieve preliminary screening and ensure that the recycled steel pipes are free of hidden defects. After the steel grade is detected in the hardness analysis mechanism, the oil casing is conveyed to the steel grade sorting mechanism. The inclined rolling support makes the oil casing roll along the support under the action of gravity. The cover plate flush with the rolling support allows the oil casing to roll directly through. According to the steel grade of the oil casing, the corresponding lifting mechanism is activated to lift the cover plate on the corresponding groove, so that the oil casings of different steel grades fall into the corresponding grooves for classification, which effectively improves the efficiency of oil casing recycling and sorting.

[0049] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A casing and tubing recycling and sorting device, characterized in that, The system includes a steel pipe flaw detection mechanism, a waste recycling mechanism, a steel grade analysis mechanism, and a steel grade sorting mechanism. These three mechanisms are sequentially arranged along the oil casing conveying path. The waste recycling mechanism is connected to the steel pipe flaw detection mechanism. The steel grade sorting mechanism includes a rolling support, a lifting mechanism, and a cover plate. The rolling support is inclined to allow the oil casing placed on it to roll. The rolling support includes at least one groove. The cover plate is disposed on the groove, with one end rotatably connected to the rolling support away from the rolling direction of the oil casing and in contact with the lifting mechanism. The lifting mechanism is located on one side of the groove and below the cover plate. The lifting mechanism opens and closes the cover plate.

2. The oil casing and tubing recycling and sorting equipment according to claim 1, characterized in that, The steel grade analysis unit and the waste recycling unit are arranged opposite each other on both sides of the steel pipe flaw detection unit, and the steel grade sorting unit is arranged opposite each other on one side of the steel grade analysis unit.

3. The oil casing and tubing recycling and sorting equipment according to claim 1, characterized in that, The steel pipe flaw detection mechanism includes a magnetic flux leakage detector and a first conveying assembly for driving the oil casing to move axially. The magnetic flux leakage detector is mounted on the first conveying assembly to detect the passing oil casing.

4. The oil casing and tubing recycling and sorting equipment according to claim 3, characterized in that, The steel grade analysis mechanism includes a spectrometer, a second conveying component, and a first pushing component, wherein the second conveying component, the first pushing component, and the spectrometer are sequentially arranged on one side of the axial direction of the first conveying component.

5. The oil casing and tubing recycling and sorting equipment according to claim 3, characterized in that, The waste recycling mechanism includes a second pushing component and a waste platform. The second pushing component is located on one side extending along the axial direction of the first conveying component and away from the steel grade analysis mechanism. The waste platform is located on the radial side of the second pushing component.

6. The oil casing and tubing recycling and sorting equipment according to claim 1, characterized in that, The lifting mechanism is configured as one of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

7. The oil casing and tubing recycling and sorting equipment according to claim 1, characterized in that, The rolling support includes an inclined section and a lifting section connected to each other. The inclined section and the lifting section are arranged alternately. The height of the upper surface of the inclined section gradually decreases, and the height of the upper surface of the lifting section gradually increases. The lifting section is provided with a lifting mechanism.

8. The oil casing and tubing recycling and sorting equipment according to claim 7, characterized in that, The lifting mechanism includes a push cylinder and a lifting plate. The lifting plate is rotatably disposed on the side of the rolling bracket. The lifting plate is provided with a slot for supporting the oil casing. The push cylinder is hinged to the lifting plate to drive the lifting plate to reciprocate.

9. The oil casing and tubing recycling and sorting equipment according to claim 1, characterized in that, The upper surface of the rolling bracket is covered with a cushioning pad made of elastic material.

10. The oil casing and tubing recycling and sorting equipment according to claim 1, characterized in that, The cross-sectional profile of the groove is an inverted trapezoid.

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