Casing pipe screwing-on quality control device and casing pipe screwing-on method

Abstract

The invention relates to the field of well drilling construction, in particular to a casing screwing-on quality control device and a casing screwing-on method.The casing screwing-on quality control device comprises a hydraulic tong used for fixing a casing, a wellhead elevator used for fixing an upper-stage casing, a limiting part and a detecting part; the limiting part is arranged on one side of the wellhead elevator, and the hydraulic tongs are arranged on the side, close to the wellhead elevator, of the limiting part. The limiting part is arranged in a swinging manner; the limiting part can drive the hydraulic tongs to move by a preset distance in the direction close to or away from the wellhead elevator. The detection part is arranged on one side of the well mouth elevator and used for detecting the screwing-on state of the casing pipe and an upper-stage casing pipe. The horizontal state of the casing pipe can be adjusted through the limiting part, the casing pipe is driven to be aligned with the upper-stage casing pipe, the screwing-on state of the casing pipe and the upper-stage casing pipe can be detected through the detection part, the screwing-on efficiency is improved, meanwhile, the screwing-on precision is guaranteed, the screwing-on quality is improved, and the situations that the casing pipe is abraded and scrapped and falls into a well are avoided.

Description

Technical Field

[0001] This invention belongs to the field of drilling construction, and specifically relates to a casing connection quality control device and casing connection method. Background Technology

[0002] In petroleum engineering, the alignment of casing connections and the proper placement of the upper connection directly affect the quality of the well project. If the casing connections are not aligned or the upper connection is not properly placed, the integrity of the gas well will be affected, and it may even lead to the abandonment of the gas well project.

[0003] Currently, the casing lowering process typically involves multiple technicians working together to lower the casing to the drill table, where technicians then use hydraulic tongs to perform the casing reconnection. However, the efficiency of this reconnection method is greatly affected by human factors. If the casing is lowered too quickly, it can easily be damaged, making proper reconnection impossible. Furthermore, if the lowering operation is too forceful during casing docking, the casing may not be perfectly vertical, resulting in misalignment. This necessitates forcibly reconnecting it with hydraulic tongs, affecting the quality of the reconnection and potentially leading to wear, failure, or even the casing falling into the well.

[0004] Therefore, existing sleeve threading methods cannot guarantee threading quality while improving efficiency. Summary of the Invention

[0005] To address the above problems, this invention proposes a casing fastening quality control device and a casing fastening method, wherein the casing fastening quality control device includes:

[0006] Hydraulic pliers, used to secure sleeves;

[0007] Wellhead clamps are used to secure the upper-level casing.

[0008] A limiting part is provided on one side of the wellhead clamp, and the hydraulic tongs are provided on the side of the limiting part close to the wellhead clamp;

[0009] The limiting part can be swung;

[0010] The limiting part can drive the hydraulic tongs to move a preset distance in a direction that is closer to or farther from the wellhead clamp;

[0011] The detection unit is located on one side of the wellhead clamp and is used to detect the connection status between the casing and the upper-level casing.

[0012] In some specific embodiments, the limiting portion includes:

[0013] A support rod is provided on one side of the wellhead clamp, and the hydraulic tongs are provided on the outer periphery of the support rod on the side close to the wellhead clamp.

[0014] A first slide rail is arranged radially on one side of the wellhead hanger. One end of the support rod is swayably connected to the first slide rail, and the support rod can move on the first slide rail in the radial direction of the wellhead hanger.

[0015] In some specific embodiments, the limiting portion further includes:

[0016] A rotating component, wherein the fixed end of the rotating component is slidably connected to the first slide rail, and the rotating end of the rotating component is fixedly connected to one end of the support rod.

[0017] In some specific embodiments, a second slide rail is provided on the outer periphery of the support rod near the wellhead clamp along the axial direction of the support rod;

[0018] The hydraulic pliers are slidably connected to the second slide rail via a first sliding frame.

[0019] In some specific embodiments, the limiting portion further includes:

[0020] A limiting ring is provided, which is slidably connected to the second slide rail via two sliding brackets, and the limiting ring is positioned directly opposite the hydraulic clamp. The limiting ring and the hydraulic clamp cooperate to clamp the sleeve.

[0021] In some specific embodiments, a rotating ring is rotatably embedded in the inner wall of the limiting ring, the rotating ring being able to rotate around the circumference of the limiting ring, and the inner wall of the rotating ring abutting against the outer wall of the sleeve.

[0022] In some specific embodiments, the inner wall of the rotating ring is detachably provided with a plurality of abutment teeth, which are evenly arranged along the circumference of the rotating ring and abut against the outer wall of the sleeve.

[0023] In some specific embodiments, the detection unit includes:

[0024] An acoustic sensor is disposed at one end of the support rod near the wellhead clamp, and is used to determine whether the casing is aligned and in contact with the upper-level casing;

[0025] A temperature sensor is installed at one end of the support rod near the wellhead clamp to determine whether there is any misalignment between the casing and the upper-level casing.

[0026] In some specific embodiments, the detection unit further includes:

[0027] An image recognition unit is disposed at one end of the support rod near the wellhead clamp, with the recognition end of the image recognition unit facing the wellhead clamp. The image recognition unit is capable of recognizing the number of exposed threads of the casing after it has been fully engaged.

[0028] A casing fastening method based on the same concept, employing the casing fastening quality control device as described in any of the above specific embodiments, includes the following steps:

[0029] Lift the sleeve and secure it in the hydraulic clamps;

[0030] The swing limit part, adjusting the horizontal state of the limit part, the hydraulic pliers set on the limit part, and the sleeve fixed at the hydraulic pliers;

[0031] The limiting part drives the hydraulic tongs and the casing fixed at the hydraulic tongs to move towards the wellhead hanger, and makes the casing fixed at the hydraulic tongs align with the upper-level casing set at the wellhead hanger.

[0032] The hydraulic tongs are used to reverse-up-coil the casing fixed at the hydraulic tongs. The detection unit checks whether the casing fixed at the hydraulic tongs is aligned and in contact with the upper-level casing set at the wellhead hanger, so as to complete the reverse-up-coil.

[0033] The hydraulic tongs are used to properly fasten the casing fixed at the hydraulic tongs. The inspection unit checks whether there is any misalignment between the casing fixed at the hydraulic tongs and the upper-level casing set at the wellhead hanger.

[0034] Disconnect the hydraulic tongs from the casing and drive the hydraulic tongs away from the wellhead clamp via the limit switch;

[0035] Insert another sleeve into the hydraulic pliers and repeat the above steps.

[0036] The casing connection quality control device of the present invention can adjust the horizontal state of the casing fixed on the hydraulic tongs through the limiting part, and drive the hydraulic tongs and the casing fixed on the hydraulic tongs to move towards the wellhead hanger, so that the casing fixed on the hydraulic tongs can be aligned with the upper-level casing fixed on the wellhead hanger, thereby improving the connection efficiency. At the same time, the detection part can detect the connection status of the casing and the upper-level casing, and can obtain relevant information in a timely manner when the casing and the upper-level casing are aligned and in contact, as well as whether the connection process between the casing and the upper-level casing is normal, so as to determine whether to continue connection or replace with a new casing. While improving the connection efficiency, it ensures the connection accuracy, improves the connection quality, and avoids casing wear and scrap and casing falling into the well.

[0037] The sleeve fastening method of the present invention uses the sleeve fastening quality control device described above to fasten the sleeve to the upper-level sleeve, so it has the same beneficial effects as the sleeve fastening quality control device described above, and therefore will not be described again here.

[0038] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A schematic diagram of the sleeve fastening quality control device in an embodiment of the present invention is shown;

[0041] Figure 2 Another schematic diagram of the sleeve fastening quality control device in an embodiment of the present invention is shown;

[0042] Figure 3 A schematic diagram of the limiting ring in an embodiment of the present invention is shown;

[0043] Figure 4 A schematic diagram of the rotating ring in an embodiment of the present invention is shown;

[0044] Figure 5 A schematic diagram of the sleeve in an embodiment of the present invention is shown;

[0045] Figure 6A flowchart of the sleeve fastening method in an embodiment of the present invention is shown.

[0046] In the diagram, 100 is the limiting part; 110 is the support rod; 111 is the first sliding frame; 112 is the second sliding frame; 120 is the first slide rail; 130 is the rotating part; 140 is the limiting ring; 141 is the rotating ring; 1411 is the abutment tooth; 150 is the level; 200 is the detection part; 210 is the acoustic sensor; 220 is the temperature sensor; 230 is the image recognition unit; 300 is the hydraulic tongs; 400 is the wellhead clamp; 500 is the drilling rig hook; and 510 is the drilling rig clamp. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Reference Figure 1 This invention provides a casing connection quality control device, characterized by comprising: a hydraulic tongs 300, a wellhead clamp 400, a limiting part 100, and a detection part 200. The hydraulic tongs 300 is used to fix the casing and connect it to the previous stage casing. The wellhead clamp 400 is used to fix the previous stage casing. The limiting part 100 is disposed on one side of the wellhead clamp 400, and the hydraulic tongs 300 is disposed on the side of the limiting part 100 near the wellhead clamp 400. The limiting part 100 is swingable to adjust the horizontal state of the casing. The limiting part 100 can drive the hydraulic tongs 300 to move a preset distance towards or away from the wellhead clamp 400 to align the casing and the previous stage casing or to fix another casing using the hydraulic tongs 300. The detection part 200 is disposed on one side of the wellhead clamp 400 and is used to detect the connection status of the casing and the previous stage casing.

[0049] Specifically, the limiting part 100 is swingable. The swing of the limiting part 100 can drive the hydraulic tongs 300 and the casing fixed on the hydraulic tongs 300, which are located on the side of the limiting part 100 near the wellhead hanger 400, to swing together. This adjusts the horizontal state of the casing fixed on the hydraulic tongs 300, making it easier for the casing to align with the upper-level casing and ensuring the accuracy of the upper connection. The distance between the limiting part 100 and the wellhead clamp 400 is a preset distance. Therefore, the distance between the hydraulic tongs 300 set on the side of the limiting part 100 near the wellhead clamp 400 and the casing fixed on the hydraulic tongs 300 and the wellhead clamp 400 is also a preset distance. The limiting part 100 can drive the hydraulic tongs 300 set on the limiting part 100 and the casing fixed on the hydraulic tongs 300 to move together towards the wellhead clamp 400, so that the casing fixed on the hydraulic tongs 300 can be aligned with the upper-level casing fixed on the wellhead clamp 400, so as to facilitate subsequent fastening by the hydraulic tongs 300. Under the action of the limiting part 100, the movement direction and movement distance of the hydraulic tongs 300 set on the limiting part 100 and the casing fixed on the hydraulic tongs 300 can be limited, so as to improve the alignment efficiency while ensuring the accuracy of alignment, thereby improving the efficiency of the fastening process. Meanwhile, the detection unit 200 can detect the alignment status between the casing and the previous casing, and can promptly obtain information on when the casing and the previous casing are aligned and in contact, as well as whether the alignment process between the casing and the previous casing is normal, so as to determine whether to continue alignment or replace with a new casing. While improving alignment efficiency, it also ensures alignment accuracy, improves alignment quality, and avoids casing wear and failure, and casing falling into the well.

[0050] It should be noted that, firstly, the casing can be transferred via the drill hook 500, which is equipped with a drill hook 510, so that it can be placed at the hydraulic tongs 300. (Refer to...) Figure 5Each casing has a male and a female thread at both ends. The female thread of the casing can be connected to the drilling rig hook 510, so that the casing can be transferred to the hydraulic tongs 300 via the drilling rig hook 500. The male thread of the upper-level casing is connected to the wellhead hook 400. When the casing is aligned with the upper-level casing, the female thread of the casing is set opposite to the male thread of the upper-level casing, so that the upper thread can be completed by connecting the female thread of the casing with the male thread of the upper-level casing. Secondly, when the hydraulic tongs 300 engages the upper casing, it first initiates a reverse engagement, causing the casing to continuously approach the upper casing until the female thread of the upper casing contacts the male thread of the upper casing. This ensures the firmness of the subsequent engagement. The contact time can be determined by the detection unit 200. After the female thread of the upper casing contacts the male thread of the upper casing, the hydraulic tongs 300 then drives the casing to engage in a forward engagement, thus tightening the upper casing to the upper casing. During this tightening process, the detection unit 200 can determine whether there is any deviation between the upper casing and the upper casing. This improves engagement efficiency while ensuring engagement accuracy and quality, preventing casing wear and failure, and preventing casing from falling into the well.

[0051] In some specific embodiments of the present invention, reference is made to... Figure 2 The limiting part 100 includes a support rod 110 and a first slide rail 120. The support rod 110 is disposed on one side of the wellhead clamp 400, and the hydraulic tongs 300 are disposed on the outer periphery of the support rod 110 near the wellhead clamp 400. The first slide rail 120 is disposed radially on one side of the wellhead clamp 400, and one end of the support rod 110 is swayably connected to the first slide rail 120, and the support rod 110 can move radially along the first slide rail 120.

[0052] Specifically, the first slide rail 120 is radially disposed on one side of the wellhead clamp 400. The support rod 110 is slidably connected to the first slide rail 120, allowing the support rod 110 to move radially along the wellhead clamp 400. When the support rod 110 approaches the wellhead clamp 400 radially, it can drive the hydraulic tongs 300 disposed on the outer periphery of the side of the support rod 110 approaching the wellhead clamp 400 and the casing fixed on the hydraulic tongs 300 to approach the wellhead clamp 400 together. This allows the casing fixed on the hydraulic tongs 300 to align with the upper-level casing fixed on the wellhead clamp 400, improving the efficiency of the fastening process. Meanwhile, the support rod 110 can also be swung on the first slide rail 120. The swing of the support rod 110 can drive the hydraulic tongs 300 and the casing fixed on the hydraulic tongs 300 on the outer periphery of the side of the support rod 110 near the wellhead clamp 400 to swing together, thereby adjusting the horizontal state of the casing fixed on the hydraulic tongs 300, so as to make the casing aligned with the upper-level casing and ensure the accuracy of the upper connection.

[0053] In some specific embodiments of the present invention, reference is made to... Figure 2 The limiting part 100 also includes a rotating member 130. The fixed end of the rotating member 130 is slidably connected to the first slide rail 120, and the rotating end of the rotating member 130 is fixedly connected to one end of the support rod 110. Specifically, the lower part of the rotating member 130 is the fixed end, which is slidably connected to the first slide rail 120, and the upper part of the rotating member 130 is the rotating end, which is fixedly connected to one end of the support rod 110. This allows the support rod 110 to swing on the rotating member 130 to adjust the horizontal state of the sleeve. The support rod 110 can also slide on the first slide rail 120 via the rotating member 130, thereby achieving the purpose of moving the sleeve fixed on the hydraulic pliers 300.

[0054] Furthermore, a level 150 is also provided on the limiting part 100 to facilitate observation of the horizontal state of the sleeve, thereby assisting the rotating part 130 in making adjustments.

[0055] In some specific embodiments of the present invention, reference is made to... Figure 2 A second slide rail is provided on the outer periphery of the support rod 110 near the wellhead clamp 400 along the axial direction of the support rod 110. The hydraulic tongs 300 are slidably connected to the second slide rail via a first sliding frame 111. Specifically, the second slide rail is arranged along the axial direction of the support rod 110, and the first sliding frame 111 is slidably mounted on the second slide rail. The end of the first sliding frame 111 away from the second slide rail is used to mount the hydraulic tongs 300. Under the action of the second slide rail, the hydraulic tongs 300 can drive the casing fixed on the hydraulic tongs 300 to move along the axial direction of the support rod 110 via the second sliding frame 112. After the casing is leveled, the axis of the support rod 110 is parallel to the axis of the wellhead clamp 400. When the support rod 110 moves along the first slide rail 120 toward the wellhead clamp 400, the hydraulic tongs 300 and the wellhead clamp 400 are coaxially aligned. This allows the casing fixed on the hydraulic tongs 300 to also be coaxially aligned with the wellhead clamp 400 and the upper-level casing fixed on the wellhead clamp 400. At this time, the first sliding frame 111 allows the casing fixed on the hydraulic tongs 300 to move along the axis of the support rod 110, i.e., the axis of the wellhead clamp 400, toward the upper-level casing, thereby further aligning the casing and the upper-level casing and improving the accuracy of the upper winding.

[0056] In some specific embodiments of the present invention, reference is made to... Figure 2The limiting part 100 also includes a limiting ring 140. The limiting ring 140 is slidably connected to the second slide rail via two sliding frames, and the limiting ring 140 is positioned directly opposite the hydraulic clamp 300. The limiting ring 140 and the hydraulic clamp 300 cooperate to clamp the sleeve. Specifically, the second sliding frame 112 is slidably mounted on the second slide rail, and the end of the second sliding frame 112 away from the second slide rail is used to mount the limiting ring 140. The limiting ring 140 is coaxially positioned directly opposite the hydraulic clamp 300. Through the cooperation of the limiting ring 140 and the hydraulic clamp 300, the sleeve can be clamped, and under the action of the limiting ring 140, the stability of the sleeve during movement can be improved, preventing damage to the sleeve.

[0057] Furthermore, the limiting ring 140 has an opening and closing structure to facilitate the placement or removal of the clamping sleeve.

[0058] In some specific embodiments of the present invention, reference is made to... Figure 3 A rotating ring 141 is rotatably embedded in the inner wall of the limiting ring 140, and the rotating ring 141 can rotate around the circumference of the limiting ring 140. The inner wall of the rotating ring 141 is used to abut against the outer wall of the sleeve. Specifically, a rotating groove is formed on the inner wall of the limiting ring 140 along the circumference of the limiting ring 140, and the rotating ring 141 is rotatably embedded in the rotating groove, with the inner wall of the rotating ring 141 abutting against the outer wall of the sleeve. During the fastening process, the rotating ring 141 can rotate together with the sleeve, thereby improving the stability of the fastening without affecting the fastening effect.

[0059] In some specific embodiments of the present invention, reference is made to... Figure 4 The inner wall of the rotating ring 141 is detachably provided with multiple abutment teeth 1411. The multiple abutment teeth 1411 are evenly arranged along the circumference of the rotating ring 141. The inner wall of the rotating ring 141 abuts against the outer wall of the sleeve through the abutment teeth 1411, thereby increasing the abutment firmness between the rotating ring 141 and the sleeve, ensuring the stability when fastening, and avoiding the situation where the rotating ring 141 cannot rotate with the sleeve and thus wears the sleeve.

[0060] In some specific embodiments of the present invention, reference is made to... Figure 2The detection unit 200 includes an acoustic sensor 210 and a temperature sensor 220. The acoustic sensor 210 is located at one end of the support rod 110 near the wellhead clamp 400 and is used to determine whether the casing is aligned and in contact with the previous stage casing. The temperature sensor 220 is located at one end of the support rod 110 near the wellhead clamp 400 and is used to determine whether there is any misalignment between the casing and the previous stage casing. Specifically, the acoustic sensor 210 is installed on the outer periphery of the bottom of the support rod 110 near the wellhead clamp 400. The acoustic sensor 210 can detect the sound fluctuations during the winding process. When the hydraulic tongs 300 reverse-winds the casing, a special sound, such as a "ding," indicates that the female thread of the casing is in contact with the male thread of the previous casing. At this time, the acoustic sensor 210 can send a signal to the hydraulic tongs 300 that it has received the special sound. The hydraulic tongs 300 will then stop the reverse winding and begin the forward winding of the casing, ensuring the accuracy of the stop time of the reverse winding and the start time of the forward winding, thereby improving the accuracy and quality of the winding process. Temperature sensor 220 is also installed on the outer periphery of the bottom of support rod 110 near the wellhead clamp 400. Temperature sensor 220 can detect the temperature during casing connection. When temperature sensor 220 detects that the temperature exceeds the preset value, it indicates that the casing is misaligned with the upper-level casing. At this time, temperature sensor 220 can send a temperature abnormality signal to hydraulic tongs 300. Hydraulic tongs 300 will stop connecting the casing so that the staff can come to the site to observe and determine whether the casing can continue to be used and whether it needs to be replaced with another casing after repair and other means, thus ensuring the quality of connection.

[0061] In some specific embodiments of the present invention, reference is made to... Figure 2 The detection unit 200 also includes an image recognition unit 230. The image recognition unit 230 is disposed at one end of the support rod 110 near the wellhead clamp 400, with its recognition end facing the wellhead clamp 400. The image recognition unit 230 can identify the number of exposed threads on the completed casing. Specifically, the image recognition unit 230 is disposed on the outer periphery of the bottom of the support rod 110 near the wellhead clamp 400, with its recognition end facing the location of the wellhead clamp 400, thereby enabling the image recognition unit 230 to identify the number of exposed threads on the completed casing.

[0062] It should be noted that in actual operation, the number of female threads is usually greater than the number of male threads. By identifying the number of exposed threads on the sleeve, i.e. the number of exposed male threads on the sleeve, it is possible to further ensure that the threads are properly engaged, thereby improving the quality of the engagement.

[0063] Reference Figure 6The present invention also provides a casing fastening method, employing the casing fastening quality control device described in any of the above specific embodiments, comprising the following steps: hoisting the casing and fixing it in the hydraulic tongs 300. Swinging the limiting part 100 to adjust the horizontal state of the limiting part 100, the hydraulic tongs 300 mounted on the limiting part 100, and the casing fixed in the hydraulic tongs 300. Driving the hydraulic tongs 300 and the casing fixed in the hydraulic tongs 300 towards the wellhead clamp 400 via the limiting part 100, and aligning the casing fixed in the hydraulic tongs 300 with the upper-level casing mounted in the wellhead clamp 400. The hydraulic tongs 300 performs reverse fastening on the casing fixed in the hydraulic tongs 300, and the detection part 200 detects and determines whether the casing fixed in the hydraulic tongs 300 and the upper-level casing mounted in the wellhead clamp 400 are aligned and in contact, thus completing the reverse fastening. The hydraulic tongs 300 are used to properly engage the casing fixed at the hydraulic tongs 300. The detection unit 200 checks to determine if there is any misalignment between the casing fixed at the hydraulic tongs 300 and the upstream casing located at the wellhead clamp 400. The connection between the hydraulic tongs 300 and the casing is then released, and the limiting unit 100 drives the hydraulic tongs 300 away from the wellhead clamp 400. Another casing is inserted into the hydraulic tongs 300, and the above steps are repeated.

[0064] Specifically, the male thread of the casing is connected to the drilling rig hoist 510. The casing is then lifted using the drilling rig hook 500, which is equipped with the drilling rig hoist 510. One end of the casing is fixed in the hydraulic tongs 300, while the other end is fixed in the limiting ring 140. Based on the level indicator 150, the support rod 110 is swung by the rotating component 130 to adjust the horizontal state of the support rod 110, the hydraulic tongs 300 mounted on the support rod 110, and the casing fixed in the hydraulic tongs 300. The support rod 110 drives the hydraulic tongs 300 and the casing fixed at the hydraulic tongs 300 to move radially toward the wellhead hanger 400 on the first slide rail 120, so that the casing fixed at the hydraulic tongs 300 is aligned with the upper-level casing set at the wellhead hanger 400. Then, the first sliding frame 111 and the second sliding frame 112 drive the limiting ring 140, the hydraulic tongs 300 and the casing fixed at the hydraulic tongs 300 to move axially toward the wellhead hanger 400, so that the casing is further close to the upper-level casing. The hydraulic tongs 300 reverse-thread the casing fixed at the hydraulic tongs 300. An acoustic sensor 210 detects and determines whether the female thread of the casing fixed at the hydraulic tongs 300 is aligned and in contact with the male thread of the upper-level casing located at the wellhead clamp 400, thus completing the reverse-threading. The acoustic sensor 210 sends a signal to the hydraulic tongs 300, controlling it to stop the reverse-threading and begin the forward-threading. The hydraulic tongs 300 then forward-thread the casing fixed at the hydraulic tongs 300. A temperature sensor 220 detects and determines the temperature between the casing fixed at the hydraulic tongs 300 and the upper-level casing located at the wellhead clamp 400 during the threading process, thus facilitating the determination of whether there is misalignment during threading. If there are no issues with the threading, the threading process is complete. Disconnect the hydraulic tongs 300 and the limiting ring 140 from the casing, and drive the hydraulic tongs 300 along the first slide rail 120 in a radial direction away from the wellhead hanger 400 via the support rod 110. Insert another casing into the hydraulic tongs 300 and repeat the above steps.

[0065] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sleeve fastening quality control device, characterized in that, include: Hydraulic pliers (300), used to secure sleeves; Wellhead clamp (400) is used to fix the upper casing; A limiting part (100) is provided on one side of the wellhead clamp (400), and a hydraulic tong (300) is provided on the side of the limiting part (100) near the wellhead clamp (400); The limiting part (100) can be swung; The limiting part (100) can drive the hydraulic tongs (300) to move a preset distance in a direction that is close to or away from the wellhead clamp (400); The detection unit (200) is located on one side of the wellhead clamp (400) and is used to detect the connection status between the casing and the upper-level casing.

2. The sleeve fastening quality control device according to claim 1, characterized in that, The limiting part (100) includes: A support rod (110) is provided on one side of the wellhead clamp (400), and a hydraulic tongs (300) is provided on the outer periphery of the support rod (110) near the wellhead clamp (400); A first slide rail (120) is arranged radially on one side of the wellhead hanger (400). One end of the support rod (110) is swayably connected to the first slide rail (120), and the support rod (110) can move on the first slide rail (120) in the radial direction of the wellhead hanger (400).

3. The sleeve fastening quality control device according to claim 2, characterized in that, The limiting part (100) further includes: A rotating component (130) is provided, wherein the fixed end of the rotating component (130) is slidably connected to the first slide rail (120), and the rotating end of the rotating component (130) is fixedly connected to one end of the support rod (110).

4. The sleeve fastening quality control device according to claim 2, characterized in that, A second slide rail is provided on the outer periphery of the support rod (110) near the wellhead clamp (400) along the axial direction of the support rod (110); The hydraulic pliers (300) are slidably connected to the second slide rail via the first sliding frame (111).

5. The sleeve fastening quality control device according to claim 4, characterized in that, The limiting part (100) further includes: A limiting ring (140) is slidably connected to the second slide rail via two sliding frames, and the limiting ring (140) is positioned directly opposite the hydraulic clamp (300). The limiting ring (140) and the hydraulic clamp (300) cooperate with each other to clamp the sleeve.

6. The sleeve fastening quality control device according to claim 5, characterized in that, The inner wall of the limiting ring (140) is rotatably fitted with a rotating ring (141), which can rotate around the circumference of the limiting ring (140), and the inner wall of the rotating ring (141) abuts against the outer wall of the sleeve.

7. The sleeve fastening quality control device according to claim 6, characterized in that, The inner wall of the rotating ring (141) is detachably provided with a plurality of abutting teeth (1411), which are evenly arranged along the circumference of the rotating ring (141) and abut against the outer wall of the sleeve.

8. The sleeve fastening quality control device according to claim 2, characterized in that, The detection unit (200) includes: An acoustic sensor (210) is disposed at one end of the support rod (110) near the wellhead clamp (400) to determine whether the casing is aligned and in contact with the upper-level casing; Temperature sensor (220) is disposed at one end of the support rod (110) near the wellhead clamp (400) to determine whether the casing and the upper-level casing are misaligned.

9. The sleeve fastening quality control device according to claim 8, characterized in that, The detection unit (200) also includes: An image recognition unit (230) is disposed at one end of the support rod (110) near the wellhead clamp (400), and the recognition end of the image recognition unit (230) is facing the wellhead clamp (400). The image recognition unit (230) is capable of recognizing the number of exposed threads of the casing after it has been fully engaged.

10. A method for threading a sleeve, employing the sleeve threading quality control device as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Lift the sleeve and place it into the hydraulic pliers (300) for fixation; The swing limit part (100) adjusts the horizontal state of the limit part (100), the hydraulic pliers (300) provided on the limit part (100), and the sleeve fixed at the hydraulic pliers (300); The hydraulic tongs (300) and the casing fixed at the hydraulic tongs (300) are driven by the limiting part (100) to move towards the wellhead hanger (400), and the casing fixed at the hydraulic tongs (300) is aligned with the upper-level casing set at the wellhead hanger (400). The hydraulic tongs (300) reverse-up-coil the casing fixed at the hydraulic tongs (300). The detection unit (200) detects whether the casing fixed at the hydraulic tongs (300) is aligned and in contact with the upper-level casing set at the wellhead hanger (400) to complete the reverse-up-coil. The hydraulic tongs (300) are used to properly fasten the casing fixed at the hydraulic tongs (300). The detection unit (200) is used to detect and determine whether there is any misalignment between the casing fixed at the hydraulic tongs (300) and the upper-level casing set at the wellhead hanger (400). Disconnect the hydraulic tongs (300) from the casing and drive the hydraulic tongs (300) away from the wellhead clamp (400) via the limiting part (100); Insert another sleeve into the hydraulic pliers (300) and repeat the above steps.

Images