Multi-pipe pulling-back device for directional drilling

Abstract

The utility model discloses a directional drilling multi-pipe back-dragging device, and relates to the field of submarine cable dragging devices, the directional drilling multi-pipe back-dragging device comprises a submarine cable dragging head main body, a steel plate and a steel cable, the steel plate is installed on the submarine cable dragging head main body, the steel cable and the steel plate are connected through a locking piece, and the end, away from the steel plate, of the steel cable is connected with a traction piece. The device has the effects that the connection reliability in the submarine cable dragging process is improved, the operation process is simplified, the overall structure stability is improved, multiple cables are laid at the same time, multiple pipes are dragged back through one-time directional drilling construction, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of submarine cable towing devices, particularly to a directional drilling multi-pipe back-towing device. BACKGROUND

[0002] Directional drilling technology has been widely applied in the field of offshore engineering, particularly in the construction of submarine cable landing. Through directional drilling technology, precise pipeline laying can be achieved under complex geological conditions, providing a convenient path for the installation of subsequent cables, optical cables and other pipelines. This technology not only improves construction efficiency, but also significantly reduces construction cost and environmental impact, becoming an indispensable part of modern offshore engineering. With the growing demand for offshore energy development and communication network construction, the role of directional drilling technology in improving construction efficiency and flexibility becomes increasingly important.

[0003] The existing technology generally has the problem that when multiple cables need to be laid simultaneously, it is not possible to complete the back-towing of multiple pipes through a single directional drilling construction, resulting in low construction efficiency and high cost. This not only increases construction time, but also may cause greater damage to geological conditions due to multiple drilling, affecting construction quality and the safety of subsequent pipelines. Therefore, how to achieve simultaneous back-towing of multiple pipes in a single directional drilling construction has become a technical problem to be solved. CONTENT OF THE INVENTION

[0004] In order to improve the problem in the prior art that when multiple cables need to be laid simultaneously, it is not possible to complete the back-towing of multiple pipes through a single directional drilling construction, resulting in low construction efficiency and high cost, the present application provides a directional drilling multi-pipe back-towing device.

[0005] The directional drilling multi-pipe back-towing device provided by the present application adopts the following technical solution:

[0006] The directional drilling multi-pipe back-towing device comprises a submarine cable towing head main body, a steel plate and a steel cable. The steel plate is installed on the submarine cable towing head main body. The steel cable and the steel plate are connected through a locking piece. The end of the steel cable away from the steel plate is connected with a traction piece.

[0007] By adopting the above technical solution, the submarine cable towing head main body, the steel plate and the steel cable are provided, and the steel plate is installed on the submarine cable towing head main body. This can effectively connect and fix multiple pipes, ensuring their stability during back-towing. The steel cable and the steel plate are connected through a locking piece, improving the reliability of the connection and avoiding disconnection in complex construction environments. The end of the steel cable away from the steel plate is connected with a traction piece, which facilitates the use of external traction force to complete the simultaneous back-towing of multiple pipes, greatly improving construction efficiency and reducing the need for multiple drilling.

[0008] Optionally, the locking member comprises a first lock, a locking bolt and a locking nut, the mounting hole of the first lock is coaxially aligned with the assembly hole of the steel plate, and the locking bolt is threadedly connected in sequence through the first lock, the steel plate and the locking nut.

[0009] By adopting the above technical scheme, the locking member can reliably connect the steel cable and the steel plate. The mounting hole of the first lock is coaxially aligned with the assembly hole of the steel plate, ensuring accurate positioning of the structure. The locking bolt is threadedly connected in sequence through the first lock, the steel plate and the locking nut, further improving the stability and firmness of the connection, effectively preventing loosening caused by vibration or tension during back dragging, thereby improving the reliability and safety of multi-pipe back dragging operation.

[0010] Optionally, the traction member comprises a fastening bolt, a second lock and a fastening nut, the fastening bolt is threadedly connected through the second lock and the fastening nut, and the steel cable is arranged in a closed loop on the fastening bolt.

[0011] By adopting the above technical scheme, the cooperation of the fastening bolt, the second lock and the fastening nut enables the steel cable to be firmly arranged in a closed loop on the fastening bolt, effectively preventing loosening or breaking of the steel cable during traction. The overall reliability of the device is improved, and the stability of the multiple pipes during one directional drilling back dragging is ensured, thereby improving the construction efficiency.

[0012] Optionally, the two ends of the steel cable are provided with locking sleeves for forming a closed shape.

[0013] By adopting the above technical scheme, the two ends of the steel cable are provided with locking sleeves to form a closed shape, so that the steel cable forms a stable overall structure, avoiding loosening or breaking of the steel cable due to external force during back dragging. The connection of the steel plate and the submarine cable head main body provides a firm support foundation for the device, the cooperation of the first lock, the locking bolt and the locking nut ensures the reliable connection of the steel cable and the steel plate, and the traction member further enhances the stability of the overall structure. The locking sleeve effectively improves the tensile property of the steel cable, ensuring that it can withstand greater traction force when multiple pipes are back dragged at the same time, thereby improving construction efficiency and reducing construction risk.

[0014] Optionally, the traction member comprises a penetrating rod, a clamping ring, a locking buckle and a nut, the locking buckle is installed on the penetrating rod, the penetrating rod is threadedly connected in sequence through the locking buckle, the steel cable and the nut, and the clamping ring is sleeved on the penetrating rod.

[0015] By adopting the technical scheme, the combination structure of the penetrating rod, the clamping ring, the locking buckle and the nut ensures the stable connection between the steel cable and the traction member, thereby improving the reliability of the overall device in directional drilling construction. The locking member further enhances the stability of the device, avoiding loosening during the back dragging process. In addition, the back dragging of multiple pipes can be completed in one directional drilling, improving the construction efficiency and reducing the cost and time consumption caused by repeated construction.

[0016] Optionally, the submarine cable towing head body is provided with a mounting plate on the side away from the steel plate, and the mounting plate is provided with a penetrating hole for mounting the submarine cable.

[0017] By adopting the technical scheme, the installation of the mounting plate can provide a stable installation position for the submarine cable, and the submarine cable can conveniently pass through the penetrating hole and be fixed on the submarine cable towing head body, thereby ensuring that multiple submarine cables do not deviate or fall off during the back dragging process, improving the reliability of the construction.

[0018] Optionally, the penetrating rod is provided with a recess for limiting the position of the steel cable, and the clamping ring and the penetrating rod are threadedly connected.

[0019] By adopting the technical scheme, the recess on the penetrating rod can effectively limit the position of the steel cable, avoiding deviation or disengagement of the steel cable during the back dragging process, thereby improving the stability and reliability of the device. The clamping ring is threadedly connected with the penetrating rod, so that the clamping ring can be firmly fixed on the penetrating rod, further enhancing the stability of the structure, and facilitating disassembly, assembly and maintenance.

[0020] Optionally, the outer diameter of the clamping ring is greater than the inner diameter of the locking buckle.

[0021] By adopting the technical scheme, the clamping ring installed on the penetrating rod is prevented from being disengaged due to improper installation.

[0022] In summary, the present application has the following at least one beneficial technical effect:

[0023] 1. By setting the structure of the submarine cable towing head body, the steel plate and the steel cable, the simultaneous back dragging of multiple pipes can be realized in single directional drilling construction, significantly improving the construction efficiency and reducing the construction cost;

[0024] 2. The steel cable and the steel plate are connected through the locking member, ensuring the stability and reliability of the structure, avoiding the problems of disengagement or loosening under complex geological conditions;

[0025] 3. The traction member enables the steel cable to be firmly connected and transmit traction force, effectively solving the problems of uneven stress or disengagement that may occur during the back dragging of multiple pipes, improving the safety and success rate of the construction. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0027] Figure 1 is a structural schematic diagram of the embodiment one of the present application.

[0028] Figure 2 is an enlarged view of A of the present application. Figure 1

[0029] Figure 3 is an enlarged view of B of the present application. Figure 1

[0030] Figure 4 is a structural schematic diagram of the embodiment two of the present application.

[0031] Figure 5 is a structural schematic diagram of the present application observed from another perspective.

[0032] The drawings show that: 1, the main body of the cable tow head; 2, steel plate; 3, steel cable; 4, locking piece; 5, traction piece; 41, first lock; 42, locking bolt; 43, locking nut; 51, fastening bolt; 52, second lock; 53, fastening nut; 6, locking sleeve; 501, penetrating rod; 502, clamping ring; 503, locking buckle; 504, nut; 7, mounting plate. DETAILED DESCRIPTION

[0033] The present application will be further described in detail below in combination with the drawings. Figures 1-5

[0034] Embodiment one

[0035] With reference to the drawings, the directional drilling multi-pipe back dragging device provided by the embodiments of the present application comprises a cable tow head main body 1, a steel plate 2 and a steel cable 3, the cable tow head main body 1 is in a cylindrical structure and has a T-shaped cross section, wherein the steel plate 2 is installed on the cable tow head main body 1, the steel plate 2 is in a triangular shape, the steel cable 3 and the steel plate 2 are connected through a locking piece 4, and the end of the steel cable 3 away from the steel plate 2 is connected with a traction piece 5, so as to improve the construction efficiency and reduce the construction cost. Specifically, this connection mode can ensure the stable connection between the steel cable 3 and the steel plate 2, and through the setting of the traction piece 5, the simultaneous back dragging of multiple pipes can be realized in a single directional drilling construction. Figure 1

[0036] ​​​​The steel plate 2 is made of high-strength steel material, has good tensile strength and corrosion resistance, is fixed on the submarine cable towing head main body 1 by welding or bolt connection, and ensures that it will not displace or fall off during construction. Each steel plate 2 is provided with an assembly hole for cooperation with the locking piece 4 to ensure stable connection of the steel cable 3.

[0037] Referring to Figure 2 As shown, the locking piece 4 includes a first lock 41, a locking bolt 42 and a locking nut 43. The first lock 41 is U-shaped, and the mounting hole formed in the first lock 41 is coaxially aligned with the assembly hole formed in the steel plate 2. The locking bolt 42 is threadedly engaged with the first lock 41, the steel plate 2 and the locking nut 43 in sequence, so that the locking piece 4 can firmly tie the steel cable 3 on the steel plate 2, preventing the steel cable 3 from loosening or falling off during construction. The material of the locking piece 4 can be high-strength steel or stainless steel to ensure its reliability under complex working conditions.

[0038] Referring to Figure 1 and Figure 5 As shown, the steel cable 3 is made of high-strength steel wire rope, which has good tensile strength and wear resistance. The two ends of the steel cable 3 are provided with locking sleeves 6 for forming a closed shape, effectively preventing the steel cable 3 from breaking or loosening during construction. The locking sleeve 6 can be a heat-shrinkable sleeve or a metal sleeve, which is fixed at the two ends of the steel cable 3 by heating or mechanical compression.

[0039] Referring to Figure 3 As shown, the traction piece 5 includes a fastening bolt 51, a second lock 52 and a fastening nut 53. The second lock 52 is U-shaped, and the fastening bolt 51 is threadedly engaged with the second lock 52 and the fastening nut 53. The steel cable 3 is arranged in a closed loop around the fastening bolt 51, so that the traction piece 5 can firmly connect the steel cable 3 and the external traction equipment, ensuring that the steel cable 3 will not slip or break during construction. The material of the traction piece 5 can be high-strength steel or stainless steel to ensure its reliability under complex working conditions.

[0040] Referring to Figure 5 As shown, the submarine cable towing head main body 1 is provided with a mounting plate 7 on the side away from the steel plate 2. The mounting plate 7 is provided with a through hole for mounting the submarine cable, which meets the installation requirements of the submarine cable. The mounting plate 7 is made of high-strength steel or stainless steel, which has good tensile strength and corrosion resistance. In addition, the edge of the through hole can be chamfered or rounded to reduce the wear and damage to the submarine cable.

[0041] The implementation principle of the directional drilling multi-pipe pullback device in this embodiment is as follows: by setting a steel plate 2 and a steel cable 3 on the main body 1 of the submarine cable tug, and by using a locking component 4 and a traction component 5 to achieve a stable connection of the steel cable 3, multiple pipes can be pulled back simultaneously in a single directional drilling operation. This improves construction efficiency, reduces construction costs, minimizes damage to geological conditions, and enhances construction quality and the safety of subsequent pipelines.

[0042] Example 2

[0043] See Figure 4 As shown, compared with Embodiment 1, the difference is that the traction component 5 includes a through rod 501, a locking ring 502, a locking buckle 503, and a nut 504. The locking buckle 503 is U-shaped and is installed on the through rod 501. The through rod 501 passes through the locking buckle 503, the steel cable 3, and the nut 504 in sequence with threaded engagement. The locking ring 502 is located on the through rod 501. This structure allows the traction component 5 to adapt more flexibly to different construction environments and needs, improving the applicability and reliability of the device.

[0044] The shooting rod 501 has a recess for limiting the steel cable 3. The outer diameter of the locking ring 502 is larger than the inner diameter of the locking buckle 503, which improves the stability of the installation. The locking ring 502 and the shooting rod 501 are threaded together, which effectively prevents the steel cable 3 from sliding or displacing during construction, thus improving the stability and reliability of the device. The shape and size of the recess can be adjusted according to actual needs to accommodate steel cables 3 of different diameters and lengths.

[0045] The implementation principle of the directional drilling multi-pipe pullback device in this application embodiment is as follows: When the traction component 5 is assembled, the through rod 501 is first passed through one end of the locking buckle 503. The snap ring 502 is fastened to the through rod 501 by the threaded connection between adjacent concave grooves. The multiple steel cables 3 can be separated separately to avoid tangling. After the snap ring 502 and steel cables 3 are installed, the through rod 501 is passed through the other end of the locking buckle 503 and locked with the nut 504, so that the pullback of multiple pipes can be completed in one directional drilling, improving construction efficiency and reducing the time consumption of repeated construction.

[0046] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Unless otherwise defined, the terms "first", "second" or "third" and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. The terms "one", "another", "an" or "some" as well as similar referents in the context of describing the specification and claims are to be construed to be open-ended, i.e., to cover both singular and plural referents unless otherwise indicated. The terms "including", "containing" or "comprising" and the like are not intended to exclude other integers or steps, but to "include" or "comprise" other integers or steps unless otherwise indicated. The terms "connected", "coupled" or "pathway" are not restricted to direct connections, couplings or pathways but include indirect connections, couplings or pathways unless otherwise indicated. The terms "above", "below", "left", "right" and the like are only used to express relative positions such as a relative position of a described object with respect to another object, and are not used to express absolute positions of the described object unless otherwise indicated.

[0047] The above are only preferred embodiments of the present application, not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A directional drilling multi-tube pullback device, characterized in that: It includes a submarine cable tug body (1), a steel plate (2) and a steel cable (3). The steel plate (2) is installed on the submarine cable tug body (1). The steel cable (3) and the steel plate (2) are connected by a locking member (4). The end of the steel cable (3) away from the steel plate (2) is connected to a traction member (5).

2. The directional drilling multi-tube pullback device according to claim 1, characterized in that: The locking component (4) includes a first latch (41), a locking bolt (42) and a locking nut (43). The mounting hole on the first latch (41) and the assembly hole on the steel plate (2) are aligned on the same axis. The locking bolt (42) passes through the first latch (41), the steel plate (2) and the locking nut (43) in sequence for threaded engagement.

3. The directional drilling multi-tube pullback device according to claim 1, characterized in that: The traction component (5) includes a fastening bolt (51), a second locking buckle (52) and a fastening nut (53). The fastening bolt (51) passes through the second locking buckle (52) and the fastening nut (53) in a threaded engagement. The steel cable (3) is wound in a closed loop around the fastening bolt (51).

4. The directional drilling multi-tube pullback device according to claim 1, characterized in that: Both ends of the steel cable (3) are provided with locking sleeves (6) for forming a closed shape.

5. The directional drilling multi-tube pullback device according to claim 1, characterized in that: The traction component (5) includes a through rod (501), a locking ring (502), a locking buckle (503), and a nut (504). The locking buckle (503) is installed on the through rod (501). The through rod (501) passes through the locking buckle (503), the steel cable (3), and the nut (504) in sequence and is threaded together. The locking ring (502) is located on the through rod (501).

6. The directional drilling multi-tube pullback device according to claim 1, characterized in that: The cable tow head body (1) is provided with an installation plate (7) on the side away from the steel plate (2), and the installation plate (7) has a through hole for installing the cable.

7. The directional drilling multi-tube pullback device according to claim 5, characterized in that: The piercing rod (501) has a recess for limiting the steel cable (3), and the snap ring (502) and the piercing rod (501) are threaded together.

8. The directional drilling multi-tube pullback device according to claim 7, characterized in that: The outer diameter of the snap ring (502) is larger than the inner diameter of the locking buckle (503).

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