A cable anti-collision righting device for a drilling floor

Abstract

The utility model discloses a kind of drilling floor cable anti-bumping righting device, and the bottom of righting device is bottom plate, bottom plate is fixed in drilling floor turntable groove by base fixing bolt group, top plate is erected on bottom plate, and the middle of bottom plate and top plate is all provided with the hole for cable pipe column to pass through, multiple pipe column righting wheels are peripherally spaced apart and arranged outside the hole on bottom plate, pipe column righting wheel is screwed on bottom plate by righting wheel screw rod, and cable guide wheel is also provided on bottom plate, and the "flexible righting" function of compression spring+righting wheel+screw rod is used to realize pipe column cable and wellhead concentric, to avoid pipe column cable and wellhead scratch and bump;The "guiding function" of cable guide wheel is used to realize cable guiding function, to avoid cable and wellhead edge directly knock or extrude, reduce the risk of cable being damaged.

Description

Technical Field

[0001] This utility model relates to the field of cable protection technology, and in particular to a device for preventing and straightening cables on a drilling platform from impact. Background Technology

[0002] Currently, at drilling and completion sites in Xinjiang, the common practice for lowering cables for electric pump wells involves using steel straps or cable clamps to bind the cable to the electric pump or tubing before lowering it into the well. This traditional method has revealed numerous problems in practice, most notably the difficulty in controlling the relative position of the cable to the wellhead during lowering. Due to the lack of an effective centering mechanism, the cable often fails to align properly with the wellhead, causing it to directly collide with or be squeezed against the wellhead edge under the combined effects of gravity and the lowering traction.

[0003] According to field statistics, in Xinjiang, failures caused by cables being bumped or crushed at the wellhead during the lowering process account for more than 30% of all failures in electric pump wells. Damaged cables can range from minor issues like insulation damage leading to leakage and short circuits, affecting pump efficiency, to more serious problems like core wire breakage, forcing the pump well to shut down for maintenance. Each downtime due to cable damage not only requires significant labor costs but also results in production losses. Furthermore, the cost of replacing cables is high, undoubtedly increasing production costs for oil and gas fields.

[0004] Therefore, existing technologies still need to be improved and enhanced. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a drilling platform cable anti-collision and straightening device, which aims to solve the problem that the lack of an effective straightening device during the cable lowering process in the prior art makes the cable prone to direct collision or squeezing with the edge of the wellhead, thus increasing the risk of cable damage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A drilling platform cable anti-collision straightening device is provided. The bottom of the straightening device is a chassis, and a top plate is mounted on the chassis. Holes for cable pipes to pass through are opened in the middle of both the chassis and the top plate. Multiple pipe straightening wheels are arranged circumferentially around the outer edge of the holes on the chassis. The pipe straightening wheels are screwed to the chassis by straightening wheel screws. Cable guide wheels are also provided on the chassis.

[0007] Furthermore, the chassis is equipped with a compression spring seat, and the straightening wheel screw passes through the compression spring seat and is fixed by an adjusting nut. The straightening wheel screw is also fitted with a compression spring, which is located between the compression spring seat and the tube column straightening wheel.

[0008] Furthermore, a centering wheel seat is provided outside the tube column centering wheel. The tube column centering wheel is rotatably connected to the centering wheel seat through a centering wheel pin, and the centering wheel seat abuts against the chassis and the top plate.

[0009] Furthermore, a cable guide wheel seat is provided between the chassis and the top plate, and a cable guide wheel is rotatably connected inside the cable guide wheel seat via a cable guide wheel pin.

[0010] Furthermore, the chassis is also provided with a slot, and a base fixing bolt assembly is provided in the slot. The chassis is fixed to the wellhead turntable groove of the drilling platform by the base fixing bolt assembly.

[0011] The technical solution adopted in this utility model has the following beneficial effects: In this application, the "flexible straightening" function of the compression spring, straightening wheel, and screw is used to achieve concentricity between the tubing and cable and the wellhead, avoiding scraping between the tubing and cable and the wellhead; the "guiding function" of the cable guide wheel is used to achieve the cable guiding function, avoiding direct collision or squeezing between the cable and the edge of the wellhead, reducing the risk of cable damage. Attached Figure Description

[0012] Figure 1 A schematic diagram of a drilling platform cable anti-collision and straightening device provided by this utility model; Figure 2 This is a schematic diagram of the structure of a drilling platform cable anti-collision and straightening device provided by this utility model, excluding the top plate and the compression spring.

[0013] 1. Chassis; 2. Top plate; 3. Pipe column straightening wheel; 4. Straightening wheel seat; 5. Straightening wheel screw; 6. Cable guide wheel; 7. Cable guide wheel seat; 8. Compression spring; 9. Compression spring seat; 10. Base fixing bolt assembly; 11. Straightening wheel pin; 12. Cable guide wheel pin; 13. Adjusting nut; 14. Slot. Detailed Implementation

[0014] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0015] This utility model provides a device for preventing and straightening drilling platform cables from impact, such as... Figure 1 and Figure 2 As shown, the bottom of the straightening device is a chassis 1, and a top plate 2 is mounted on the chassis 1. Both the chassis 1 and the top plate 2 have holes in the middle for the cable conduit to pass through. Multiple conduit straightening wheels 3 are spaced around the outer edge of the holes on the chassis 1. The conduit straightening wheels 3 are screwed to the chassis 1 by straightening wheel screws 5. Cable guide wheels 6 are also provided on the chassis 1.

[0016] In this embodiment, multiple pipe straightening wheels 3 installed on the chassis 1 are first used to straighten the cable pipe, thereby reducing friction or collision between the cable pipe and the wellhead or chassis 1, improving the stability of the pipe during lowering, and protecting the cable pipe. The cable guide wheel 6 guides the cable, reducing damage to the cable.

[0017] In this embodiment, as Figure 1 and Figure 2 As shown, a compression spring seat 8 is provided on the chassis 1. The straightening wheel screw 5 passes through the compression spring seat 8 and is fixed by the adjusting nut 13. The straightening wheel screw 5 is also fitted with a compression spring 8, which is located between the compression spring seat 8 and the cable column straightening wheel 3. Through the elastic force of the compression spring 8, the flexible straightening of the cable column can be further realized, reducing the compression of the cable column. Furthermore, the elastic range of the compression spring 8 can be adjusted by the adjusting nut 13 to adapt to the flexible straightening of cable columns of different sizes.

[0018] In this embodiment, as Figure 2 As shown, a straightening wheel seat 4 is provided outside the straightening wheel 3 of the cable column. The straightening wheel 3 of the cable column is rotatably connected to the straightening wheel seat 4 through the straightening wheel pin 11, and the straightening wheel seat 4 abuts between the chassis 1 and the top plate 2. By combining the straightening wheel seat 4 with the chassis 1 and the top plate 2, it is ensured that the straightening wheel moves elastically within the area and will not have a large vertical displacement due to the lowering speed of the cable column, thereby reducing the possibility of damage to the cable column.

[0019] In this embodiment, a cable guide wheel seat 7 is also provided between the chassis 1 and the top plate 2. A cable guide wheel 6 is rotatably connected to the cable guide wheel seat 7 through a cable guide wheel pin 12. The cable guide wheel 6 guides the cable, reducing damage to the cable. The cable guide wheel seat 7 keeps the cable guide wheel 6 and the pipe column straightening wheel 3 on the same horizontal line. The guide wheel is made of MC nylon material with a hardness ≥85D and a friction coefficient ≤0.15. The wheel body is machined with an arc groove by precision machining on a lathe, and the dimensional tolerance is controlled within ±0.1mm, so that it fits perfectly with the outer diameter of the Φ25-35mm cable.

[0020] In this embodiment, the chassis 1 is also provided with a slot 14, and a base fixing bolt group 10 is provided in the slot 14. The chassis 1 is fixed in the groove of the drill table turntable by the base fixing bolt group 10, so as to realize the overall fixation of the device. In addition, the chassis 1 and the top plate 2 can be fixed by sheet metal or other structures. The chassis 1 and the top plate 2 are based on Q235 steel plate, which is processed by a 1500W laser cutting machine. The cutting accuracy is controlled within ±0.5mm to ensure that the dimensional tolerance of the components meets the assembly requirements. Carbon dioxide gas shielded welding is used. After welding, the surface is ground to achieve a roughness of Ra≤12.5μm to ensure structural stability and load-bearing strength, so as to adapt to the edge thickness of 10-20mm of the drill table opening in Xinjiang.

[0021] In summary, this utility model achieves concentricity between the tubing cable and the drilling platform wellhead turntable through the "flexible straightening" function of the compression spring 8, the straightening wheel, and the screw, thus preventing the tubing cable from scraping against the drilling platform wellhead turntable; and achieves the cable guiding function through the "guiding function" of the cable guide wheel 6, thus preventing the cable from directly colliding or being squeezed with the edge of the wellhead, reducing the risk of cable damage.

[0022] The installation and use of this device are further explained below: Secure the device to the turntable groove using the base fixing bolt group 10. Slowly rotate the turntable and adjust the device angle so that the cable is aligned with the cable guide wheel 6. Then lock the turntable. Place the insertion cable on the cable guide wheel 6 and adjust the centering wheel screw 5 to use the centering wheel to push the tubing string against the center position at the wellhead.

Claims

1. A rig floor cable anti-chafing centralizer, comprising: The bottom of the straightening device is a chassis (1), and a top plate (2) is mounted on the chassis (1). Holes for cable pipes to pass through are opened in the middle of both the chassis (1) and the top plate (2). Multiple pipe straightening wheels (3) are spaced around the outer edge of the holes on the chassis (1). The pipe straightening wheels (3) are screwed to the chassis (1) by straightening wheel screws (5). Cable guide wheels (6) are also provided on the chassis (1).

2. The anti-collision and straightening device for drilling platform cables according to claim 1, characterized in that, The chassis (1) is provided with a compression spring seat (9), the straightening wheel screw (5) passes through the compression spring seat (9) and is fixed by the adjusting nut (13), and the straightening wheel screw (5) is also fitted with a compression spring (8), which is located between the compression spring seat (9) and the tube column straightening wheel (3).

3. The rig floor electrical cable anti-chafing centralizer of claim 1, wherein, The column straightening wheel (3) is provided with a straightening wheel seat (4). The column straightening wheel (3) is rotatably connected to the straightening wheel seat (4) through the straightening wheel pin (11), and the straightening wheel seat (4) abuts against the chassis (1) and the top plate (2).

4. The rig floor electrical cable anti-chafing centralizer of claim 1, wherein, A cable guide wheel seat (7) is provided between the chassis (1) and the top plate (2), and a cable guide wheel (6) is rotatably connected inside the cable guide wheel seat (7) through the cable guide wheel pin (12).

5. The rig floor electrical cable anti-chafing centralizer of claim 1, wherein, The chassis (1) is also provided with a slot (14), and a base fixing bolt group (10) is provided in the slot (14). The chassis (1) is fixed in the groove of the drill table turntable by the base fixing bolt group (10).

Images