Ocean vibration piling device and using method thereof

Abstract

The invention relates to a marine vibration piling device and a using method thereof. The marine vibration piling device comprises a device body. At least one vibration structure; the two ends of the vibration structure abut against the side wall of the device body, the vibration structure is used for generating high-frequency vibration, and the vibration frequency and amplitude of the vibration structure can be adjusted; and the wedge block set comprises at least two wedge blocks, the wedge blocks can stretch out to abut against and be clamped to the side wall of the guide pipe so that the device body can be fixed to the inner wall of the guide pipe, and the wedge blocks can transmit high-frequency vibration generated by the vibration structure to the guide pipe so that the friction resistance between the guide pipe and a soil layer can be reduced. The invention solves the problem that the conduit is difficult to run into the preset depth smoothly in the offshore drilling process, and drives the drilling conduit and soil around the conduit to vibrate by utilizing a high-frequency vibration principle, so that the interaction between the conduit and soil is weakened, the running resistance in the drilling conduit piling process is reduced, the conduit can be smoothly mounted to the preset depth, and the service life of the conduit is prolonged. The safety of marine oil-gas well mouths is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of combining marine oil and gas engineering with geotechnical engineering, and in particular to a marine vibration pile driving device and a use method thereof. Background Art

[0002] In offshore drilling projects, the first thing that needs to be lowered into an oil and gas well is the drilling conduit, which is a hollow round steel pipe. This structural component not only supports key facilities such as the wellhead and blowout preventer on the upper part, but also must be able to withstand the complex loads generated by the operation of the deep-water offshore drilling platform. Therefore, the stability and bearing capacity of the conduit are crucial to the safety of the entire drilling operation. The application of pile driving technology, with its small disturbance in the seabed soil, high bearing capacity and strong stability, provides an ideal solution for the lowering of offshore drilling conduits.

[0003] In offshore drilling, the smooth installation of the conduit to the predetermined depth is crucial to the bearing capacity and stability of the oil and gas wellhead. The complexity of the submarine strata often causes the conduit to encounter greater resistance during the sinking process, which is mainly manifested in the difficulty of penetrating the hard soil layer, especially the soil plug formed inside the conduit, which will greatly increase the resistance to entry, causing the conduit to refuse the hammer and fail to enter the predetermined depth. In this case, it is often difficult to achieve the expected effect by using a simple piling method, resulting in low construction efficiency and increased costs. In order to deal with the problem of resistance to the entry of the drilling conduit, the soil plug inside the pipe is drilled out with a drill bit to reduce the friction resistance of the inner wall of the pipe, so that the conduit can continue to be piled smoothly to the predetermined depth. Although the method of drilling out the soil plug with a drill bit has certain advantages in actual construction, its disadvantages cannot be ignored. First, the method of drilling out the soil plug with a drill bit requires special drilling rigs and drill bit equipment, which are expensive, and the drilling process consumes a lot of energy and materials, such as the wear cost of mud and drill bits. Secondly, the drilling operation requires a high level of technology and experience. Improper operation may lead to problems such as borehole deviation and hole wall collapse, increasing the complexity and risk of construction. In addition, the method of drilling out the soil plug with a drill bit requires a long construction time, affecting the overall construction progress.

[0004] Therefore, the inventor, relying on many years of experience and practice in related industries, proposes a marine vibration piling device and a method of using the same to overcome the defects of the prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a marine vibration piling device and a method of using the same, so as to solve the problem that the casing is difficult to be smoothly lowered into a predetermined depth during marine drilling. The high-frequency vibration principle is utilized to drive the drilling casing and the soil around the casing to vibrate, so as to weaken the interaction between the casing and the soil, reduce the lowering resistance of the drilling casing during piling, and enable the casing to be smoothly installed to the predetermined depth, thereby ensuring the safety of the wellhead of the marine oil and gas well.

[0006] The object of the present invention is achieved by a marine vibration pile driving device, comprising:

[0007] A device body, wherein a receiving cavity is arranged in the device body;

[0008] At least one vibration structure is disposed in the accommodating cavity; two ends of the vibration structure are disposed against the side walls of the device body, and the vibration structure is used to generate high-frequency vibration, and its vibration frequency and amplitude can be adjusted;

[0009] At least one set of wedge blocks, the wedge block set includes at least two wedge blocks that can be extended and retracted in the transverse direction of the device body, the wedge blocks can be extended to abut against the side wall of the conduit to fix the device body on the inner wall of the conduit, and the pressure applied by the wedge blocks to the inner wall of the conduit is less than the yield strength of the conduit material; the wedge blocks can transmit the high-frequency vibration generated by the vibration structure to the conduit to reduce the friction between the conduit and the soil layer;

[0010] A wedge block driving structure, disposed in the accommodating cavity, for driving the extension and retraction of each of the wedge blocks;

[0011] An intelligent control system, wherein the vibration structure and the wedge block driving structure are both electrically connected to the intelligent control system.

[0012] In a preferred embodiment of the present invention, the vibration structure includes a motor, both ends of the motor are connected to a vibration rod, and one end of the vibration rod away from the motor is pressed against the side wall of the device body; the motor is electrically connected to the intelligent control system.

[0013] In a preferred embodiment of the present invention, the intelligent control system includes a main computer, and the main computer is connected to the motor via a cable.

[0014] In a preferred embodiment of the present invention, a cable joint, a drill string joint and / or a wire rope connection joint is provided at the top of the device body.

[0015] In a preferred embodiment of the present invention, the wedge block driving structure includes a plurality of hydraulic driving parts, each of the hydraulic driving parts includes a hydraulic cylinder, an end of the hydraulic cylinder close to the side wall of the device body is an open end, a piston rod is arranged in the hydraulic cylinder, and an end of the piston rod close to the open end is connected to the wedge block; a wedge block channel is arranged on the side wall of the device body at a position opposite to each open end, and the piston rod slides along the hydraulic cylinder to drive the wedge block to extend and retract in the wedge block channel.

[0016] In a preferred embodiment of the present invention, a solenoid valve is provided on each of the hydraulic drive parts, and each of the solenoid valves is electrically connected to the intelligent control system.

[0017] In a preferred embodiment of the present invention, a hydraulic oil supply and return portion is provided in the accommodating chamber, and each of the hydraulic driving portions is connected to the hydraulic oil supply and return portion via a pipeline.

[0018] In a preferred embodiment of the present invention, the number of the wedge block groups is 3, and the 3 wedge block groups are arranged at intervals along the axial direction of the device body; each of the wedge block groups includes 3 wedge blocks arranged at intervals along the circumferential direction of the device body; the number of the vibration structures is 3, and the 3 vibration structures are arranged at intervals along the axial direction of the device body.

[0019] The object of the present invention can also be achieved in this way. A method for using a marine vibration pile driving device comprises: when the normal piling operation of the drilling pipe encounters resistance, suspending the piling operation of the drilling pipe; determining the operation parameters of the marine vibration pile driving device before the operation, selecting the specifications of the marine vibration pile driving device according to the pipe, and connecting the device to the platform through a wire rope or a drill rod after the device is assembled;

[0020] After the marine vibration pile driving device is lowered to a set position inside the conduit, each of the wedge blocks is extended and then abuts against the inner wall of the conduit to complete the electrical connection between the intelligent control system and the vibration structure; the vibration structure is started to generate high-frequency vibration, which is transmitted to the conduit through the wedge blocks, and the interaction force between the drilling conduit and the soil around the pipe is reduced under high-frequency vibration; the vibration structure is turned on or off according to the friction between the pile side of the conduit and the soil layer; after the conduit is installed and lowered to a predetermined depth, the marine vibration pile driving device is recovered.

[0021] In a preferred embodiment of the present invention, the method for using the marine vibration pile driving device includes:

[0022] S1. When the normal piling operation of the drilling pipe encounters resistance, the piling operation is suspended and the vibration operation of the drilling pipe is started. The operation parameters of the marine vibration piling device are designed and determined before the operation;

[0023] S2. Equipment preparation: Select the corresponding size of marine vibration pile driving device according to the size of the conduit;

[0024] S3. Device assembly: Assemble the marine vibration pile driving device on the drilling platform. The marine vibration pile driving device is connected to the platform through a wire rope or a drill rod to complete the device assembly;

[0025] S4. Check and clean the catheter;

[0026] S5. Installation and positioning: After the marine vibration pile driving device is lowered to a set position inside the conduit, each of the wedges is extended and abuts against the inner wall of the conduit, and the wedge drive structure adjusts the pressure applied by the wedge on the conduit;

[0027] S6, connecting the intelligent control system to the vibration structure;

[0028] S7, pipe vibration operation: start the vibration structure to generate high-frequency vibration, and reduce the friction between the side of the drilling pipe pile and the soil layer;

[0029] S8. Real-time monitoring and adjustment: During the lowering of the conduit, the sinking state of the conduit and the soil reaction are monitored in real time, and the frequency, amplitude and vibration direction of the vibration structure are adjusted;

[0030] S9. Continue piling operation with the conduit: When it is determined that the friction between the conduit pile side and the soil layer has been reduced to the set value, turn off the vibration structure and start piling operation; when it is difficult to lower the pile, continue to turn on the vibration structure to reduce the friction between the conduit pile side and the soil layer; after the conduit is installed and lowered to the predetermined depth, the wedge is retracted and the marine vibration piling device is pulled up to be recovered.

[0031] From the above, the purpose of the present invention is to provide a marine vibration pile driving device and a method of using the same, which have the following beneficial effects:

[0032] The present invention solves the technical problem that the conduit is difficult to smoothly lower into the predetermined depth during the marine drilling process. The present invention utilizes the principle of high-frequency vibration. After the device is fixed together with the drilling conduit, the vibration is generated through the internal integrated vibration structure, driving the drilling conduit and the soil around the conduit to vibrate, significantly reducing the strength and stress of the soil, increasing the fluidity and plasticity of the soil, and weakening the interaction between the conduit and the soil, thereby reducing the resistance to lowering the drilling conduit during the piling process, so that the conduit can be smoothly installed to the predetermined depth, ensuring the safety of the marine oil and gas wellhead. This design not only improves the efficiency and success rate of the conduit lowering, but also enhances the safety and environmental adaptability of the construction process. It is suitable for various complex submarine geological environments and provides an efficient and safe solution for the installation of marine drilling conduits. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0034] in:

[0035] Figure 1 It is a schematic diagram of the marine vibration pile driving device of the present invention.

[0036] Figure 2 It is a schematic diagram of the arrangement of the wedge block group of the present invention.

[0037] Figure 3 It is a schematic diagram of the hydraulic drive unit of the present invention.

[0038] Figure 4 This is a state diagram of the marine vibration pile driving device of the present invention during construction operation.

[0039] In the figure:

[0040] 100. Marine vibration pile driving device;

[0041] 1. Device body; 11. Accommodation chamber; 12. Cable joint; 13. Drill string joint; 14. Wire rope connection joint;

[0042] 2. Vibration structure; 21. Motor; 22. Vibration rod; 23. Cable;

[0043] 3. Wedge block set; 31. Wedge block;

[0044] 4. Catheter;

[0045] 5. Main computer;

[0046] 61. Hydraulic cylinder; 62. Piston rod; 63. Hydraulic oil supply and return unit;

[0047] 7. Drilling platform. DETAILED DESCRIPTION

[0048] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0049] The specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be considered to belong to the scope of the present invention. It should be noted that when an element is referred to as "arranged on" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0051] like Figures 1 to 4 As shown, the present invention provides a marine vibration pile driving device 100, comprising:

[0052] The device body 1 has a receiving cavity 11 disposed therein;

[0053] At least one vibration structure 2 is arranged in the accommodating cavity 11; the two ends of the vibration structure 2 are arranged against the side walls of the device body 1, and the vibration structure 2 is used to generate high-frequency (10-50HZ) vibration, and its vibration frequency and amplitude can be adjusted; in specific implementation, the vibration structure 2 is required to generate lateral high-frequency vibration to reduce soil stress, increase soil fluidity and plasticity, and weaken the interaction between the conduit (i.e., drilling conduit) and the soil, thereby reducing the resistance to the drilling conduit;

[0054] At least one wedge block group 3, the wedge block group 3 includes at least two wedge blocks 31 that can be extended and retracted in the transverse direction of the device body, the wedge blocks 31 can be extended to press against the side wall of the conduit 4 to fix the device body 1 on the inner wall of the conduit 4, and the pressure applied by the wedge blocks 31 to the inner wall of the conduit 4 is less than the yield strength of the conduit material; the wedge blocks 31 can transmit the high-frequency vibration generated by the vibration structure 2 to the conduit 4 to reduce the friction between the conduit 4 and the soil layer;

[0055] The wedge block driving structure is disposed in the accommodating cavity 11 and is used to drive the extension and retraction of each wedge block 31;

[0056] The intelligent control system, the vibration structure 2 and the wedge drive structure are electrically connected to the intelligent control system. The intelligent control system allows the operator to adjust the vibration frequency and amplitude of the vibration structure 2 according to real-time feedback to adapt to different geological conditions.

[0057] The present invention solves the technical problem that the conduit is difficult to smoothly lower into the predetermined depth during the marine drilling process. The present invention utilizes the principle of high-frequency vibration. After the device is fixed together with the drilling conduit, the vibration is generated through the internally integrated vibration structure 2, driving the drilling conduit and the soil around the conduit to vibrate, significantly reducing the strength and stress of the soil, increasing the fluidity and plasticity of the soil, and weakening the interaction between the conduit and the soil, thereby reducing the resistance to lowering the drilling conduit during the piling process, so that the conduit can be smoothly installed to the predetermined depth, ensuring the safety of the wellhead of the marine oil and gas well. This design not only improves the efficiency and success rate of the conduit lowering, but also enhances the safety and environmental adaptability of the construction process. It is suitable for various complex submarine geological environments and provides an efficient and safe solution for the installation of marine drilling conduits.

[0058] The present invention takes into account the difficulty of piling caused by soil conditions, uses a vibration structure 2 to vibrate the soil around the guide tube 4, reduces soil stress to reduce the friction between the guide tube 4 and the soil, and facilitates the lowering of the guide tube 4. The present invention does not require expensive drilling rigs and a large number of drill equipment, and only requires the installation of the vibration structure 2. It has low cost and is easy to operate, which greatly reduces equipment investment and operating costs. The present invention can not only effectively overcome many shortcomings of the traditional drill drilling method, but also shows significant advantages in terms of cost, construction efficiency, ease of operation, environmental friendliness and adaptability.

[0059] Further, if Figure 1 As shown, the vibration structure 2 includes a motor 21, both ends of the motor 21 are connected to a vibration rod 22, and one end of the vibration rod 22 away from the motor 21 is pressed against the side wall of the device body 1; the motor 21 is electrically connected to the intelligent control system.

[0060] The integrated motor and vibration rod generate vibrations, which drive the drilling pipe and the soil around the pipe to vibrate, significantly reducing the strength and stress of the soil, thereby reducing the resistance to the drilling pipe during piling, allowing the pipe to be smoothly installed to the predetermined depth.

[0061] Further, if Figure 1 As shown, the intelligent control system includes a main computer 5, and the main computer 5 is connected to the motor 21 through a cable 23. The cable 23 is a special cable resistant to seawater corrosion, connecting the vibration structure 2 and the main computer to ensure stable transmission of power and control signals.

[0062] Further, if Figure 1 As shown, the top of the device body 1 is provided with a cable joint 12, a drill string joint 13 and / or a wire rope connection joint 14. The drill string joint 13 is a precision threaded joint. The cable joint 12 is used for connecting and installing the cable 23. Specifically, the cable 23 is divided into two sections, one section inside the device (connected to the motor 21) and one section outside the device (connected to the host computer 5), and the two sections are connected by a cable joint.

[0063] The marine vibration piling device of the present invention is assembled on the drilling platform 7, and the wire rope connection joint 14 on the top of the device is firmly connected to the wire rope, or the drill string joint 13 (precision threaded joint) on the top of the device is used to accurately dock with the drill rod. The marine vibration piling device of the present invention is connected to the platform through the wire rope or the drill rod, so that all components are correctly installed in place.

[0064] Further, if Figure 3As shown, the wedge block driving structure includes multiple hydraulic driving parts, each hydraulic driving part includes a hydraulic cylinder 61, and the end of the hydraulic cylinder 61 close to the side wall of the device body 1 is an open end. A piston rod 62 is arranged in the hydraulic cylinder 61, and the end of the piston rod 62 close to the open end is connected to the wedge block 31; a wedge block channel is arranged on the side wall of the device body 1 at a position opposite to each open end, and the piston rod 62 slides along the hydraulic cylinder 61 to drive the wedge block 31 to extend and retract in the wedge block channel.

[0065] Furthermore, each hydraulic drive unit is provided with a solenoid valve, each solenoid valve is electrically connected to the intelligent control system, and the intelligent control system controls the movement of the piston rod 62 of each hydraulic drive unit through the solenoid valve.

[0066] Further, if Figure 1 As shown, a hydraulic oil supply and return portion 63 is provided in the accommodating chamber 11, and each hydraulic driving portion is connected to the hydraulic oil supply and return portion through a pipeline.

[0067] After the marine vibration pile driving device 100 of the present invention is lowered to a suitable position inside the conduit, the intelligent control system controls each wedge 31 to extend and abut against the inner wall of the conduit, and the present invention is fixed inside the conduit.

[0068] In a specific embodiment of the present invention, the maximum extension of the wedge block 31 is 0.02m. The rough surface of the wedge block is used to achieve the fixation and stability between the marine vibration pile driving device of the present invention and the conduit, ensuring that the present invention maintains accurate positioning and fixation stability under the action of high-frequency vibration, thereby providing a solid foundation for the smooth sinking of the conduit. In addition, the hydraulic drive unit performs fine adjustment to ensure that the pressure applied by the wedge block 31 on the conduit 4 is sufficient to maintain a stable connection without causing damage to the conduit material, thereby ensuring the efficiency and safety of the entire vibration pile driving process.

[0069] In a specific embodiment of the present invention, the marine vibration pile driving device of the present invention is a cylindrical device with a height of 0.5m; Figure 2 As shown, there are three wedge blocks 3, which are arranged at intervals along the axial direction of the device body 1; each wedge block group 3 includes three wedge blocks 31 arranged at intervals along the circumferential direction of the device body 1. The maximum extension of the wedge block 31 is 0.02m, ensuring compatibility with the catheter and flexibility of operation. There are three vibration structures 2, which are arranged at intervals along the axial direction of the device body 1.

[0070] The method of using the marine vibration pile driving device 100 of the present invention is as follows:

[0071] When the normal piling operation of the drilling pipe encounters resistance, the piling operation of the drilling pipe is suspended; before the operation, the operating parameters of the marine vibration piling device are determined, and the specifications of the marine vibration piling device are selected according to the pipe. After the device is assembled, it is connected to the platform through a wire rope or a drill rod;

[0072] After the present invention is placed in the catheter and set to a position (such as Figure 4 As shown in the figure, each wedge is extended and then pressed against the inner wall of the conduit, completing the electrical connection between the intelligent control system and the vibration structure 2; the vibration structure 2 is started to generate high-frequency vibration, which is transmitted to the conduit 4 through the wedge 31. The interaction force between the drilling conduit and the soil around the conduit is reduced under the high-frequency vibration, that is, the friction between the pile side of the drilling conduit and the soil layer is reduced; the vibration structure of the present invention is turned on or off according to the friction between the pile side of the conduit and the soil layer; after the conduit is installed and lowered to a predetermined depth, the marine vibration piling device of the present invention is recovered.

[0073] Specifically, the steps include:

[0074] S1. Scheme design: When the normal piling operation of the drilling pipe encounters resistance, the piling operation is suspended and the vibration operation of the drilling pipe is started. Before the operation, the operating parameters of the marine vibration piling device are designed and determined according to the seabed soil report and the actual situation on site. The operating parameters include vibration frequency, amplitude and pressure of the hydraulic drive unit.

[0075] Ensure that the pressure applied by the marine vibration pile driving device to the inner wall of the conduit is less than the yield strength of the conduit material, that is, Where F is the force exerted by the wedge on the inner wall of the catheter, unit N; S is the contact area between the wedge and the inner wall of the catheter, unit m 2 ;σThe yield strength of the catheter material.

[0076] S2. Equipment preparation: Select the corresponding size of marine vibration pile driving device according to the size of the conduit;

[0077] In a specific embodiment, the outer diameter of the conduit 4 is 0.508 m / 0.762 m, and the wall thickness is 0.0254 m. The outer diameter of the device body of the corresponding marine vibration piling device is 0.447 m / 0.701 m.

[0078] The marine vibration pile driving device is a cylindrical device with a height of 0.5m. The maximum extension of the wedge 31 is 0.02m, ensuring compatibility with the catheter and flexibility of operation. Prepare the required marine vibration pile driving device, including a vibration structure (vibration rod, motor), a steel wire rope or drill pipe for connection, a wedge drive structure (hydraulic system, including a hydraulic drive unit, a hydraulic oil supply and return unit 63), a main computer 5, and required cables 23.

[0079] S3. Device assembly: Assemble the marine vibration piling device on the drilling platform, firmly connect the wire rope connection joint 14 at the top of the device to the wire rope, or use the drill string joint 13 (precision threaded joint) at the top of the device to accurately connect with the drill pipe; the marine vibration piling device is connected to the platform through the wire rope or drill pipe, so that all components are correctly installed in place and the device assembly is completed.

[0080] S4. Check and clean the catheter; make sure there are no obstacles inside the catheter and the surface is smooth, suitable for the vibration device to be inserted.

[0081] S5. Installation positioning: Figure 4 As shown, after the marine vibration pile driving device is lowered to a set position (appropriate position) inside the conduit, each of the wedges extends out and abuts against the inner wall of the conduit, and the wedge drive structure adjusts the pressure applied by the wedge on the conduit;

[0082] Specifically, the maximum extension of the wedge block 31 is 0.02m. The rough surface of the wedge block is used to achieve the fixation and stability between the marine vibration pile driving device of the present invention and the conduit, ensuring that the present invention maintains precise positioning and fixation stability under the action of high-frequency vibration, thereby providing a solid foundation for the smooth sinking of the conduit. In addition, the hydraulic drive unit performs fine adjustment to ensure that the pressure applied by the wedge block 31 on the conduit 4 is sufficient to maintain a stable connection without causing damage to the conduit material, thereby ensuring the efficiency and safety of the entire vibration pile driving process.

[0083] S6. Connect the intelligent control system with the vibration structure; use a special cable resistant to seawater corrosion to connect the vibration structure 2 and the main computer 5 to ensure stable transmission of power and control signals.

[0084] S7, pipe vibration operation: start the vibration structure 2 (motor 21 starts working) to generate high-frequency vibration (the frequency is determined according to actual needs). The interaction force between the drilling pipe and the soil around the pipe is reduced under high-frequency vibration, that is, the friction between the drilling pipe pile side and the soil layer is reduced.

[0085] S8. Real-time monitoring and adjustment: During the lowering of the conduit, the sinking state of the conduit and the soil reaction are monitored in real time, and the frequency, amplitude and vibration direction of the vibration structure are adjusted to achieve the best piling effect.

[0086] S9. Continue the piling operation of the conduit: when it is determined that the frictional resistance between the pile side of the conduit and the soil layer (piling resistance) has dropped to the set value, turn off the vibration structure 2. Since the soil stress will recover over time, it is necessary to start the piling operation immediately. When it is difficult to pile, continue to turn on the vibration structure 2 to reduce the frictional resistance between the pile side of the conduit and the soil layer (piling resistance). After the conduit is installed and lowered to the predetermined depth, the wedge block 31 is retracted and the marine vibration piling device is pulled up to be recovered.

[0087] Through these steps, the marine vibration piling device can effectively assist the lowering of the casing under various complex seabed geological conditions, improve construction efficiency, reduce construction risks, and provide strong technical support for the installation of marine drilling casings.

[0088] From the above, the purpose of the present invention is to provide a marine vibration pile driving device and a method of using the same, which have the following beneficial effects:

[0089] The present invention solves the technical problem that the conduit is difficult to smoothly lower into the predetermined depth during the marine drilling process. The present invention utilizes the principle of high-frequency vibration. After the device is fixed together with the drilling conduit, the vibration is generated through the internally integrated vibration structure 2, driving the drilling conduit and the soil around the conduit to vibrate, significantly reducing the strength and stress of the soil, increasing the fluidity and plasticity of the soil, and weakening the interaction between the conduit and the soil, thereby reducing the resistance to lowering the drilling conduit during the piling process, so that the conduit can be smoothly installed to the predetermined depth, ensuring the safety of the wellhead of the marine oil and gas well. This design not only improves the efficiency and success rate of the conduit lowering, but also enhances the safety and environmental adaptability of the construction process. It is suitable for various complex submarine geological environments and provides an efficient and safe solution for the installation of marine drilling conduits.

[0090] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A marine vibration pile driving device, characterized in that: include: A device body, wherein a receiving cavity is arranged in the device body; At least one vibration structure is disposed in the accommodating cavity; two ends of the vibration structure are disposed against the side walls of the device body, and the vibration structure is used to generate high-frequency vibration, and its vibration frequency and amplitude can be adjusted; At least one set of wedge blocks, the wedge block set includes at least two wedge blocks that can be extended and retracted in the transverse direction of the device body, the wedge blocks can be extended to abut against the side wall of the conduit to fix the device body on the inner wall of the conduit, the pressure applied by the wedge blocks to the inner wall of the conduit is less than the yield strength of the conduit material; the wedge blocks can transmit the high-frequency vibration generated by the vibration structure to the conduit to reduce the friction between the conduit and the soil layer; A wedge block driving structure, disposed in the accommodating cavity, for driving the extension and retraction of each of the wedge blocks; An intelligent control system, wherein the vibration structure and the wedge block driving structure are both electrically connected to the intelligent control system.

2. The marine vibration pile driving device according to claim 1, characterized in that: The vibration structure includes a motor, both ends of the motor are connected to a vibration rod, and one end of the vibration rod away from the motor is pressed against the side wall of the device body; the motor is electrically connected to the intelligent control system.

3. The marine vibration pile driving device according to claim 2, characterized in that: The intelligent control system comprises a main computer, and the main computer is connected to the motor via a cable.

4. The marine vibration pile driving device according to claim 3, characterized in that: A cable joint, a drill string joint and / or a wire rope connection joint are arranged on the top of the device body.

5. The marine vibration pile driving device according to claim 1, characterized in that: The wedge block driving structure includes a plurality of hydraulic driving parts, each of which includes a hydraulic cylinder, wherein one end of the hydraulic cylinder close to the side wall of the device body is an open end, a piston rod is arranged in the hydraulic cylinder, and one end of the piston rod close to the open end is connected to the wedge block; a wedge block channel is arranged on the side wall of the device body at a position opposite to each of the open ends, and the piston rod slides along the hydraulic cylinder to drive the wedge block to extend and retract in the wedge block channel.

6. The marine vibration pile driving device according to claim 5, characterized in that: A solenoid valve is arranged on each of the hydraulic drive parts, and each of the solenoid valves is electrically connected to the intelligent control system.

7. The marine vibration pile driving device according to claim 5, characterized in that: A hydraulic oil supply and return portion is provided in the accommodating chamber, and each of the hydraulic driving portions is connected to the hydraulic oil supply and return portion through a pipeline.

8. The marine vibration pile driving device according to claim 1, characterized in that: The number of the wedge block groups is 3, and the 3 wedge block groups are arranged at intervals along the axial direction of the device body; each wedge block group includes 3 wedge blocks arranged at intervals along the circumferential direction of the device body; the number of the vibration structures is 3, and the 3 vibration structures are arranged at intervals along the axial direction of the device body.

9. The method for using the marine vibration pile driving device according to any one of claims 1 to 8, characterized in that: include: When the normal piling operation of the drilling pipe encounters an obstacle, the piling operation of the pipe is suspended; Determine the operating parameters of the marine vibration pile driving device before operation, select the specifications of the marine vibration pile driving device according to the guide tube, and after the device is assembled, connect it to the platform through a wire rope or a drill rod; After the marine vibration pile driving device is lowered to a set position inside the conduit, each of the wedge blocks is extended and then abuts against the inner wall of the conduit to complete the electrical connection between the intelligent control system and the vibration structure; the vibration structure is started to generate high-frequency vibration, which is transmitted to the conduit through the wedge blocks, and the interaction force between the conduit and the soil around the pipe is reduced under high-frequency vibration; the vibration structure is turned on or off according to the friction resistance between the pile side of the conduit and the soil layer; after the conduit is installed and lowered to a predetermined depth, the marine vibration pile driving device is recovered.

10. The method for using the marine vibration pile driving device according to claim 9, characterized in that: include: S1. When the normal piling operation of the drilling pipe encounters resistance, the piling operation is suspended and the vibration operation of the pipe is started; the operation parameters of the marine vibration piling device are designed and determined before the operation; S2. Equipment preparation: Select the corresponding size of marine vibration pile driving device according to the size of the conduit; S3. Device assembly: Assemble the marine vibration pile driving device on the drilling platform. The marine vibration pile driving device is connected to the platform through a wire rope or a drill rod to complete the device assembly; S4. Check and clean the catheter; S5. Installation and positioning: After the marine vibration pile driving device is lowered to a set position inside the conduit, each of the wedges is extended and abuts against the inner wall of the conduit, and the wedge drive structure adjusts the pressure applied by the wedge on the conduit; S6, connecting the intelligent control system to the vibration structure; S7, pipe vibration operation: start the vibration structure to generate high-frequency vibration, and reduce the friction between the side of the drilling pipe pile and the soil layer; S8. Real-time monitoring and adjustment: During the lowering of the conduit, the sinking state of the conduit and the soil reaction are monitored in real time, and the frequency, amplitude and vibration direction of the vibration structure are adjusted; S9. Continue piling operation with the conduit: When it is determined that the friction between the conduit pile side and the soil layer has been reduced to the set value, turn off the vibration structure and start piling operation; when it is difficult to lower the pile, continue to turn on the vibration structure to reduce the friction between the conduit pile side and the soil layer; after the conduit is installed and lowered to the predetermined depth, the wedge is retracted and the marine vibration piling device is pulled up to be recovered.

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