Simple catwalk

Abstract

The utility model relates to the technical field of drilling exploration equipment, and provides a simple catwalk which is used for installing a drilling tool and comprises a catwalk support. The catwalk is rotationally arranged on the catwalk bracket; the angle adjusting device is arranged in the catwalk support and used for driving the sliding rail to deflect. By means of the technical scheme, the problems that in the prior art, a catwalk is complex in structure, high in maintenance cost and large in operation difficulty are solved.

Description

Technical Field

[0001] This utility model relates to the field of drilling exploration equipment technology, specifically to a simple catwalk. Background Technology

[0002] Currently, there are two types of catwalks used in the drilling exploration industry. One type involves a trolley moving on a rail without any power drive. The trolley needs to be manually pushed back and forth to move it forward and backward, completing the lifting and lowering of the drill string. This type of catwalk increases labor costs, has low automation, and low work efficiency. The other type uses a winch to pull the trolley forward and backward. Although this type of catwalk improves automation and reduces manual labor, its structure is too complex, its maintenance costs are too high, and it also involves the coordination between the trolley's moving speed and the lifting or lowering speed of the drill string, making it difficult to operate and with a high risk factor. Utility Model Content

[0003] This invention proposes a simplified catwalk, which solves the problems of complex catwalk structure, high maintenance cost, and difficult operation in related technologies.

[0004] The technical solution of this utility model is as follows:

[0005] A simple catwalk for mounting drill bits includes:

[0006] Catwalk bracket;

[0007] The slide rail is rotatably mounted on the cat walkway bracket;

[0008] A trolley is slidably mounted on the slide rail;

[0009] An angle adjustment device is installed inside the catwalk support, and the angle adjustment device is used to drive the slide rail to deflect.

[0010] Preferably, the catwalk support has a groove, the groove being arc-shaped, and further includes:

[0011] A pulley is rotatably mounted on the slide rail and located away from the hinge point. The pulley is slidably mounted in the slide groove, and the slide rail is slidably connected to the slide groove of the cat walkway bracket through the pulley.

[0012] Preferably, the angle adjustment device is a lifting cylinder, the fixed end of the angle adjustment device is hinged to the inner bottom surface of the cat walkway support, and the movable end of the angle adjustment device is hinged to the bottom surface of the slide rail.

[0013] Preferred options also include:

[0014] A plurality of stops are provided, and the stops are respectively disposed at both ends of the slide rail, the stops being used to block the trolley.

[0015] Preferred options also include:

[0016] A plurality of limiting blocks are provided, and the plurality of limiting blocks are spaced apart on the trolley. The limiting blocks are used to block one end of the drill bit.

[0017] Preferably, the trolley includes:

[0018] A movable base plate is slidably mounted on the slide rail, a limiting block is mounted on the movable base plate, and the movable end of the angle adjustment device is hinged to the bottom surface of the movable base plate.

[0019] A side plate is provided at one end of the movable base plate.

[0020] The working principle and beneficial effects of this utility model are as follows:

[0021] This invention relates to a catwalk consisting of a slide rail, a pulley, a catwalk support, and an angle adjustment device. The catwalk support is placed in front of the wellhead on the ground, at the same height as the drill string rack used on site. The slide rail is embedded inside the catwalk support, with one end of the slide rail connected to the catwalk support by a hinge. A pulley is provided on the other side of the slide rail, and a groove is provided at the corresponding position on the catwalk support. An angle adjustment device is also provided between the slide rail and the catwalk support. By controlling the extension and retraction length of the angle adjustment device, the tilt angle of the slide rail can be controlled. Compared with traditional non-powered catwalks, there is no need for manual back-and-forth pushing of the pulley, reducing labor costs and improving work efficiency. Compared with catwalks that use a winch to pull the pulley, the structure is simple, avoiding complex speed coordination issues, reducing operating difficulty and risk factors, and also reducing maintenance costs accordingly. Attached Figure Description

[0022] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0023] Figure 1 This is a schematic diagram of the cat walkway structure of this utility model;

[0024] Figure 2 This is a side view of the cat walkway of this utility model;

[0025] Figure 3 for Figure 1 Enlarged view of a portion of point A in the middle;

[0026] Figure 4 for Figure 1 Enlarged view of a section at point B in the middle;

[0027] Figure 5 This is a schematic diagram of another state of the cat walkway structure of this utility model.

[0028] In the diagram: 1. Catwalk support; 101. Slide groove; 2. Slide rail; 3. Trolley; 301. Movable base plate; 302. Side plate; 4. Angle adjustment device; 5. Drill tool; 6. Drill tool hanger; 7. Stop block; 8. Limit block; 9. Pulley. Detailed Implementation

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0030] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections 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 utility model based on the specific circumstances.

[0032] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Reference Figures 1-5 As an embodiment of this utility model, a simple catwalk is proposed for installing a drill bit 5, including a catwalk bracket 1; a slide rail 2 is rotatably mounted on the catwalk bracket 1; a trolley 3 is slidably mounted on the slide rail 2; and an angle adjustment device 4 is disposed inside the catwalk bracket 1, which is used to drive the slide rail 2 to deflect.

[0034] In the above scheme, the catwalk support 1 is placed in front of the wellhead on the ground, at the same height as the drilling tool 5 placement frame used on site, providing stable support for the entire device. One end of the slide rail 2 is hinged to one end face of the catwalk support 1, and the other end is slidably connected through a groove 101 on the catwalk support 1, ensuring that the slide rail 2 can rotate flexibly relative to the catwalk support 1. The trolley 3 is installed on the slide rail 2 and can slide smoothly along the slide rail 2. The angle adjustment device 4, such as a lifting cylinder, is installed inside the catwalk support 1. It should be noted that the position of the angle adjustment device 4 inside the catwalk support 1 can be adjusted as needed.

[0035] The working process involves lowering drill string 5 as follows: First, the angle adjustment device 4 tilts the slide rail 2 upwards at a certain angle. The trolley 3, due to its own weight, moves along the slide rail 2 to the side of the catwalk support 1 closest to the wellhead. When the trolley 3 reaches the preset limit position, it can be stopped by the stop block 7 at the end of the slide rail 2. The lower connector of drill string 5 is then placed on the trolley 3. Next, the angle adjustment device 4 is lowered, tilting the slide rail 2 downwards at a certain angle. At this time, relying on the weight of drill string 5 and the trolley, drill string 5 moves downwards along the guide rail with the trolley 3. When the upper connector of drill string 5 descends to the surface of the slide rail, the drill string chuck 6 is released, and the angle adjustment device 4 is raised again to keep drill string 5 horizontal, rolling it onto the drill string placement frame. Finally, the angle adjustment device 4 is raised again, returning the slide rail 2 to its upward tilted state, and the trolley 3 returns to the side closest to the wellhead, ready for the next drilling operation.

[0036] Raising Drill String 5: First, adjust the angle adjustment device 4 to keep the plane of the trolley 3 at the same height as the drill string 5 placement frame. Roll the drill string 5 from the drill string placement frame onto the trolley 3 and the slide rail, and install the drill string chuck 6 on the joint of the drill string 5. Then, keeping the angle adjustment device 4 stationary, start the drilling rig winch. The drill string chuck 6 raises the drill string 5. Relying on the pulling force of the drill string chuck 6 and the weight of the drill string 5 and the trolley 3, the trolley 3 moves towards the wellhead. When the trolley 3 stops at the limit position near the wellhead, adjust the angle adjustment device 4 to lower it, causing the slide rail 2 to tilt downwards. The trolley 3 begins to slide downwards away from the wellhead due to its own weight. When the trolley 3 stops at another limit position away from the wellhead, adjust the angle adjustment device 4 to raise it, keeping the plane of the trolley 3 at the same height as the drill string placement frame. Roll the drill string 5 from the drill string placement frame onto the trolley 3 and the slide rail, completing one raising of the drill string 5 operation, and putting the trolley 3 into the preparation state for the next raising of the drill string 5.

[0037] Compared to traditional non-powered catwalks, there is no need for manual back-and-forth pushing of the trolley 3, which reduces labor costs and improves work efficiency. Compared to catwalks that use winches to pull the trolley 3, the structure is simple, avoids complex speed coordination issues, reduces the difficulty of operation and the risk factor, and the maintenance cost is also reduced accordingly.

[0038] Furthermore, the catwalk support 1 has a groove 101, which is arc-shaped, and also includes a pulley 9, which is rotatably mounted on the slide rail 2 and located away from the hinge point. The pulley 9 is slidably mounted in the groove 101, and the slide rail 2 is slidably connected to the groove 101 of the catwalk support 1 through the pulley 9.

[0039] In the above scheme, an arc-shaped groove 101 is provided on the catwalk support 1, and a rotatable pulley 9 is installed on the slide rail 2 away from the hinge point, with the pulley 9 embedded in the groove 101. This ensures that the pulley 9 can slide smoothly in the groove 101, while also ensuring that the connection between the slide rail 2 and the catwalk support 1 is tight and flexible, allowing the slide rail 2 to rotate and slide smoothly relative to the catwalk support 1.

[0040] Working process: During the lifting and lowering of drill string 5, when the angle adjustment device 4 drives the slide rail 2 to deflect, the pulley 9 rolls within the arc-shaped groove 101, guiding the movement trajectory of the slide rail 2 and making the tilt angle adjustment of the slide rail 2 more stable and precise. Simultaneously, as the trolley 3 moves along the slide rail 2, the cooperation between the pulley 9 and the groove 101 reduces the friction between the slide rail 2 and the catwalk support 1, making the trolley 3 move more smoothly and improving work efficiency. Through the cooperation of the pulley 9 and the arc-shaped groove 101, friction and wear between the slide rail 2 and the catwalk support 1 are reduced, extending the service life of the equipment, improving the stability and reliability of equipment operation, and increasing work efficiency.

[0041] Specifically, when lifting drill string 5, after drill string 6 has moved away from the upper connector, the drilling rig winch is started. Drill string 6 lifts drill string 5 with the pull of the winch, causing the trolley 3 to move on the slide rail 2, thus realizing the lifting operation of drill string 5. Throughout the process, drill string 6 maintains a stable grip on drill string 5 to ensure the safety of lifting drill string 5.

[0042] Furthermore, the fixed end of the angle adjustment device 4 is hinged to the inner bottom surface of the cat walkway bracket 1, and the movable end of the angle adjustment device 4 is hinged to the bottom surface of the slide rail 2.

[0043] In the above scheme, taking the angle adjustment device 4 as a lifting cylinder as an example, the hydraulic control system controls the extension and retraction of the lifting cylinder during the lifting and lowering of the drill string 5. For example, when lowering the drill string 5, hydraulic oil first enters the rodless chamber of the cylinder, pushing the piston rod to extend and causing the slide rail 2 to tilt upward; during the subsequent lowering process, hydraulic oil enters the rod chamber of the cylinder, pulling the piston rod to retract and causing the slide rail 2 to tilt downward. By precisely controlling the flow and pressure of the hydraulic oil, the tilt angle of the slide rail 2 can be accurately adjusted, thereby controlling the movement of the trolley 3 and the drill string 5. Using the lifting cylinder as the angle adjustment device 4 has high control accuracy and reliability, and can quickly and accurately adjust the tilt angle of the slide rail 2 to meet the needs of lifting and lowering the drill string 5 under different working conditions, improving the automation level and work efficiency of the catwalk. At the same time, its structure is relatively simple and easy to maintain and operate.

[0044] Furthermore, it also includes several blocks 7, which are respectively disposed at both ends of the slide rail 2. The blocks 7 are used to block the trolley 3.

[0045] In the above scheme, stop blocks 7 are welded or bolted to both ends of the slide rail 2, which can effectively block the movement of the trolley 3 and prevent the trolley 3 from sliding off the slide rail 2. During the lifting and lowering of the drill string 5, when the trolley 3 moves along the slide rail 2 to the limit position near or away from the wellhead, the stop block 7 will contact the trolley 3 and prevent the trolley 3 from moving further. During the lifting of the drill string 5, when the trolley 3 moves towards the wellhead and reaches the limit position, the stop block 7 near the wellhead blocks the trolley 3, and subsequent operations can be performed, such as adjusting the lowering of the lifting cylinder; when the trolley 3 slides downward away from the wellhead and reaches the limit position, the stop block 7 away from the wellhead plays a blocking role, ensuring the safety and orderliness of the operation. The setting of the stop block 7 provides a clear limit to the movement of the trolley 3, avoiding equipment damage and safety accidents caused by the trolley 3 sliding off the slide rail 2 out of control, improving the safety and reliability of equipment operation, and ensuring that the entire lifting and lowering operation of the drill string 5 is carried out within the specified range.

[0046] Furthermore, it also includes a number of limit blocks 8, which are spaced apart on the trolley 3. The limit blocks 8 are used to block one end of the drill bit 5.

[0047] In the above scheme, several limiting blocks 8 are installed at intervals on the movable base plate 301 of the trolley 3 to ensure that the drill bit 5 can be effectively prevented from detaching from the upper surface of the trolley 3. For example, the limiting block 8 can be designed as a cuboid structure with a certain height, which can restrict the position of the drill bit 5 when it is placed on the trolley 3, and prevent the drill bit 5 from shifting or slipping during movement.

[0048] Working Process: During the lifting and lowering of drill string 5, when drill string 5 is placed on trolley 3, the limiting block 8 always acts as a stop and positioner for drill string 5. During the lowering of drill string 5, after the lower connector of drill string 5 is placed on trolley 3, the limiting block 8 restricts the position of drill string 5, ensuring that drill string 5 does not shift during the movement of trolley 3. This ensures that drill string 5 can accurately reach the predetermined position for subsequent operations, such as docking with wellhead equipment or placing it on the drill string 5 placement frame. The setting of the limiting block 8 improves the stability and positioning accuracy of drill string 5 on trolley 3, reduces the shaking and deviation of drill string 5 during movement, reduces the operational errors and safety risks that may be caused by inaccurate positioning of drill string 5, and ensures the accuracy and reliability of the lifting and lowering operation of drill string 5.

[0049] Furthermore, the trolley 3 includes a movable base plate 301, which is slidably mounted on the slide rail 2, and a limiting block 8 is mounted on the movable base plate 301; a side plate 302 is mounted on one end of the movable base plate 301.

[0050] In the above scheme, during the lifting and lowering of the drill string 5, the movable base plate 301 slides on the slide rail 2. It should be noted that the movable base plate 301 is a trolley with pulleys at its bottom, and the trolley moves on the slide rail via these pulleys. This moves the drill string 5, while the side plate 302 consistently blocks the end of the drill string 5. This improves the stability of the drill string 5's movement. The combination of these two elements effectively achieves smooth movement of the drill string 5, reduces safety hazards during movement, and improves the overall performance of the catwalk.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A simple catwalk for installing drill bits (5), characterized in that, include: Catwalk bracket (1); The slide rail (2) is rotatably mounted on the cat walkway bracket (1); The trolley (3) is slidably mounted on the slide rail (2); An angle adjustment device (4) is installed inside the cat walkway bracket (1), and the angle adjustment device (4) is used to drive the slide rail (2) to deflect.

2. The simplified catwalk according to claim 1, characterized in that, The catwalk support (1) has a groove (101) that is arc-shaped, and further includes: The pulley (9) is rotatably mounted on the slide rail (2) and located away from the hinge point. The pulley (9) is slidably mounted in the slide groove (101). The slide rail (2) is slidably connected to the slide groove (101) of the cat walkway bracket (1) through the pulley (9).

3. A simplified catwalk according to claim 1, characterized in that, The fixed end of the angle adjustment device (4) is hinged to the inner bottom surface of the cat walkway bracket (1), and the movable end of the angle adjustment device (4) is hinged to the bottom surface of the slide rail (2).

4. A simplified catwalk according to claim 1, characterized in that, Also includes: The stop (7) has a plurality of blocks, and the plurality of blocks (7) are respectively disposed at both ends of the slide rail (2). The blocks (7) are used to block the trolley (3).

5. A simplified catwalk according to claim 4, characterized in that, Also includes: There are several limiting blocks (8), and several limiting blocks (8) are spaced apart on the trolley (3). The limiting blocks (8) are used to block one end of the drill bit (5).

6. A simplified catwalk according to claim 5, characterized in that, The trolley (3) includes: The movable base plate (301) is slidably mounted on the slide rail (2), and the limiting block (8) is mounted on the movable base plate (301); Side plate (302) is disposed at one end of the movable base plate (301).

Images