Mud sampling device and sea-land crossing drilling construction method

Abstract

This invention provides a mud sampling device and a method for drilling across land and sea. The mud sampling device includes: a mounting box with a connecting pipe at its top; and a connecting mechanism including a limiting plate, a sealing block, an elastic contraction element, and a synchronization plate. A method for drilling across land and sea includes the following steps: S1: Drilling a guide hole on the land end. This design facilitates the timed and quantitative sampling of mud within the delivery pipe range by adjusting the sampling pipe through the first telescopic element during mud delivery, preventing mud splashing and eliminating the need for manual sampling. During continuous mud delivery through the mud delivery pipeline, the device automatically samples at regular intervals, and the sampling pipe is sealed for storage.

Description

Technical Field

[0001] This invention relates to the field of mud sampling technology, and more particularly to a mud sampling device and a method for marine-land crossing drilling. Background Technology

[0002] During directional drilling operations from land to sea, a circulating mud treatment system is required. This system treats the circulating mud to ensure its reuse during the directional drilling process. During recycling, the recycled mud needs to be sampled and analyzed periodically to ensure it meets recycling standards and prevent substandard mud from entering the directional drilling system.

[0003] When the existing circulating mud base station samples the mud, in the early stage, the circulating mud is manually received at the outlet of the newly prepared circulating mud by hand-held sampling tube; in the middle stage, the circulating mud is manually received at the port after the circulating mud has been filtered and purified by hand-held sampling tube.

[0004] Using the above sampling method, after the slurry has been recycled for a preset period, it relies too much on manual operation, which can easily cause the slurry to splash during the receiving process, and it is not convenient to take rapid samples at regular intervals.

[0005] Therefore, it is necessary to provide new mud sampling devices to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides a mud sampling device, which solves the technical problem in related technologies that it is inconvenient to perform rapid sampling of circulating mud at regular intervals.

[0007] To solve the above-mentioned technical problems, the mud sampling device provided by the present invention includes:

[0008] The mounting box is equipped with a connecting pipe at its top;

[0009] A connecting mechanism includes a limiting plate, a sealing block, an elastic contraction member, and a synchronization plate. The limiting plate is fixedly disposed within the mounting box and has an adjustment sliding hole. The sealing block is slidably installed between the mounting box and the limiting plate. The two ends of the elastic contraction member are respectively fixedly connected to the mounting box and the sealing block. The top of the synchronization plate passes through the adjustment sliding hole and is fixedly connected to the bottom of the limiting plate.

[0010] A movable box is slidably inserted into the mounting box body. A sampling tube is installed inside the movable box. A first telescopic component is used to drive the movable box to move toward the synchronization plate.

[0011] A conveying pipe is offset from the first telescopic component, and the conveying pipe passes sequentially through the bottom end of the mounting box, the limiting plate, and the top end of the mounting box.

[0012] The delivery pipe is provided with a sampling port, and the sealing block is provided with a flow guiding oblique hole;

[0013] In the initial state, the sealing block blocks the sampling port, the guide orifice connects the connecting pipe to the inside of the mounting box, and the port of the sampling pipe, the output port of the guide orifice and the synchronization plate are arranged in sequence.

[0014] Preferably, the sealing block is coated with an anti-stick coating.

[0015] Preferably, the first telescopic member is horizontally positioned and is fixedly connected to the mounting box and the movable box.

[0016] Preferably, a central control screen is provided on the mounting box.

[0017] Preferably, the sampling tube is labeled, and the central control screen is equipped with a visual recognition device.

[0018] The mud sampling device further includes a support mechanism installed inside the movable box; the support mechanism includes a second telescopic member and a bracket, the second telescopic member being used to lift the bracket, and the bracket being used to install the sampling tube.

[0019] Preferably, a pressure sensor is installed on the bracket, and the output of the pressure sensor is connected to the central control screen.

[0020] Preferably, the central control screen is signal-connected to the first telescopic component, and when the pressure detected by the pressure sensor reaches a preset pressure, the central control screen automatically controls the first telescopic component to start.

[0021] Preferably, a limiting slide rail structure is provided at the connection between the movable box and the mounting box.

[0022] Preferably, the movable box has a limiting sliding hole, the bracket has a circular structure, the bracket is slidably installed in the movable box, the top end of the sampling tube is provided with a tapered tube opening structure, and the bracket is assembled below the tapered tube opening structure.

[0023] The second telescopic component is an L-shaped rod. The top of the second telescopic component is fixedly connected to the bottom of the bracket. The bottom of the second telescopic component passes through the limiting sliding hole and is slidably connected to the movable box. The first telescopic component is inclined. The two ends of the first telescopic component are respectively hinged to the mounting box and the bottom of the second telescopic component.

[0024] To address the aforementioned technical problems, the present invention also provides a method for drilling across land and sea, comprising the following steps:

[0025] S1: Land end pilot hole drilling: The drill bit trajectory is controlled by a geomagnetic guidance system to form an initial pilot hole of a preset diameter;

[0026] S2: Multi-stage hole enlargement and cleaning: The diameter of the initial guide hole is enlarged to the preset enlargement diameter through a seven-stage hole enlargement process, and the hole is cleaned by using a hole enlarger and circulating mud. During the circulation of the circulating mud, the mud sampling device is used to periodically sample and analyze the circulating mud.

[0027] S3: Pre-treatment before pipeline delivery: The full penetration welding process of carbon dioxide shielded welding is adopted. After the weld is qualified by UT inspection, the inner and outer walls of the pipeline are coated with anti-corrosion coating.

[0028] S4: Pipeline pushing: The land-based pipe pusher and the sea vessel apply force simultaneously. The land-based pipe pusher clamps the pushed pipeline and pushes it in sections through a pipe gripper. The sea vessel adjusts the water entry angle of the pushed pipeline through an anchoring system.

[0029] S5: The offshore vessel assists in pipe pulling: the construction vessel is equipped with a directional drilling rig connected to the drill rod to pull the pipe, and the attitude of the pushed pipe is monitored in real time;

[0030] S6: Real-time monitoring and correction: The system uses a geomagnetic guidance system and underwater sonar for joint monitoring and dynamic adjustment of push and pull parameters.

[0031] Compared with related technologies, the mud sampling device provided by the present invention has the following advantages:

[0032] During the process of conveying mud through the conveying pipe, the sampling tube can be extended and retracted by the first telescopic component to achieve timed and quantitative sampling of mud within the range of the conveying pipe, preventing mud splashing during sampling. No manual hand tools are required. During the continuous conveying of mud through the mud conveying pipeline, the equipment can automatically sample at regular intervals and the sampling tube can be sealed and stored. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 A three-dimensional diagram of a preferred embodiment of the mud sampling device provided by the present invention;

[0035] Figure 2 for Figure 1 The AA section view shown;

[0036] Figure 3 for Figure 2 The BB section view shown;

[0037] Figure 4 for Figure 2 The shown is a CC section view;

[0038] Figure 5 for Figure 2 A 3D view of the bracket shown;

[0039] Figure 6 for Figure 2 A 3D view showing the position of the sampling tube after it is raised and its corresponding position with the visual recognition device;

[0040] Figure 7 This is a schematic diagram illustrating the sampling principle of a first embodiment of the mud sampling device provided by the present invention, wherein... Figure 7 (a) is a cross-sectional view of the movable box in its stowed state. Figure 7 (b) is a cross-sectional view of the movable box in the docking state. Figure 7 (c) is a cross-sectional view of the moving box in the sampling state; Figure 7 (d) is a structural diagram of the movable box in its unfolded state. Figure 7 (e) is a structural diagram of the bracket in the raised state;

[0041] Figure 8 A schematic diagram of the structure of a second embodiment of the mud sampling device provided by the present invention;

[0042] Figure 9 for Figure 8 A 3D view of the bracket shown;

[0043] Figure 10 This is a schematic diagram illustrating the principle of the moving box discharge of the mud sampling device provided by the present invention, wherein... Figure 10 (a) is a front view of the mobile box in its stored state. Figure 10 (b) is a front view of the moving box in the discharging state. Figure 10 (c) is a front view of the movable box in the lifting state.

[0044] Explanation of icon numbers:

[0045] 1. Installation box; 11. Connecting pipe; 10. Central control screen; 101. Visual recognition device; 102. Drain outlet;

[0046] 2. Delivery pipe;

[0047] 3. Connecting mechanism; 31. Limiting plate; 310. Adjusting sliding hole; 32. Elastic contraction element; 33. Sealing block; 330. Guide oblique hole; 34. Synchronizing plate;

[0048] 4. Moving box; 41. First telescopic component; 40. Limiting sliding hole;

[0049] 5. Support mechanism; 51. Second telescopic component; 52. Bracket;

[0050] 6. Sampling tube; 61. Label.

[0051] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0053] This invention provides a mud sampling device.

[0054] First Embodiment

[0055] Please refer to the following: Figures 1 to 4 In a first embodiment of the present invention, a mud sampling device includes:

[0056] Mounting box 1, the top of which is provided with a connecting pipe 11;

[0057] The connecting mechanism 3 includes a limiting plate 31, a blocking block 33, an elastic contraction member 32, and a synchronization plate 34. The limiting plate 31 is fixedly disposed inside the mounting box 1 and has an adjustment sliding hole 310. The blocking block 33 is slidably installed between the mounting box 1 and the limiting plate 31. The two ends of the elastic contraction member 32 are respectively fixedly connected to the mounting box 1 and the blocking block 33. The top of the synchronization plate 34 passes through the adjustment sliding hole 310 and is fixedly connected to the bottom of the limiting plate 31.

[0058] The mobile box 4 is slidably inserted into the mounting box 1. A sampling tube 6 is installed inside the mobile box 4. The first telescopic member 41 is used to drive the mobile box 4 to move toward the synchronization plate 34.

[0059] The conveying pipe 2 is offset from the first telescopic member 41, and the conveying pipe 2 passes through the bottom end of the mounting box 1, the limiting plate 31 and the top end of the mounting box 1 in sequence;

[0060] The delivery pipe 2 is provided with a sampling port, and the sealing block 33 is provided with a flow guiding oblique hole 330;

[0061] In the initial state, the blocking block 33 blocks the sampling port, the guide orifice 330 connects the connecting pipe 11 to the inside of the mounting box 1, and the port of the sampling pipe 6, the output port of the guide orifice 330 and the synchronization plate 34 are arranged in sequence.

[0062] Please refer to it again. Figure 2 In this embodiment, the conveying pipe 2 is a mud conveying pipeline in the mud circulation system, which is used to convey mud. During installation, the conveying pipe 2 is installed perpendicular to the ground to ensure that the mud can be conveyed from the top to the bottom of the conveying pipe 2.

[0063] Please refer to the following: Figure 2 and Figure 4 The first telescopic member 41 is used to drive the moving box 4 to move to the right. The moving box 4 first abuts against the synchronization plate 34. At the same time as the abutment, the opening of the sampling tube 6 inside the moving box 4 is aligned with the flow guide oblique hole 330.

[0064] Please see Figure 7 The first telescopic member 41 can drive the sealing block 33 to extend into the delivery pipe 2 through the moving box 4 and the synchronization plate 34.

[0065] Please refer to the following: Figure 7 and Figure 3 When the moving box 4 moves to the left and is no longer in contact with the synchronization plate 34, the elastic contraction member 32 provides elastic tension for the contraction and reset of the sealing block 33, so that the sealing block 33 returns from being inserted into the delivery pipe 2 to sealing the sampling port on the delivery pipe 2.

[0066] In this embodiment, the mobile box 4 includes four usage states:

[0067] Please see Figure 7 (a) Initial state (storage state): The top of the movable box 4 is slidably sealed with the limiting plate 31, and the sealing block 33 is sealed at the sampling port to ensure that the conveying pipe 2 conveys the mud.

[0068] Please see Figure 7(c) Sampling state: When the moving box 4 is connected to the guide hole 330, the blocking block 33 is inserted into the conveying range of the conveying pipe 2, and the guide hole 330 is connected to the conveying pipe 2 and the sampling pipe 6; at this time, some mud in the conveying pipe 2 enters the sampling pipe 6 through the guide hole 330, thereby completing the circulating mud sampling.

[0069] Please see Figure 7 (b) In the docking state, the inlet of the conveying pipe 2, the guide orifice 330, and the connecting pipe 11 are connected in sequence. The moving box 4 abuts against the synchronization plate 34. The sealing block 33 seals the sampling port. The conveying pipe 2 continues to convey the mud. The connecting pipe 11 provides external air pressure so that the mud remaining in the guide orifice 330 after sampling can be discharged into the sampling pipe 6. This reduces the residual circulating mud inside the sealing block 33.

[0070] Please see Figure 7 (d) Discharge state: The movable box 4 slides out of the mounting box 1 to facilitate the removal and replacement of the sampling tube 6.

[0071] The guide orifice 330 facilitates the stable flow of the circulating mud remaining in the sealing block 33 into the sampling tube 6 after sampling is completed. After the circulating mud remaining in the sealing block 33 has settled and flowed into the sampling tube 6, the moving box 4 moves to the storage state, reducing the communication between the circulating mud in the sampling tube 6 and the external environment after sampling, reducing water loss, and ensuring the stability of each component of the circulating mud after sampling.

[0072] Please refer to the following: Figure 2 and Figure 3 The specific sampling principle is as follows:

[0073] When it is necessary to sample the circulating mud, the first telescopic component 41 is activated. The first telescopic component 41 first drives the moving box 4 to move to the right. The moving box 4 first abuts against the synchronous plate 34. At the same time as abutting, the sampling tube 6 inside the moving box 4 is aligned with and connected to the guide inclined hole 330.

[0074] As the moving box 4 continues to move to the right, the moving box 4 drives the sealing block 33 to move to the right and insert it into the inside of the conveying pipe 2 via the synchronization plate 34; while the conveying pipe 2 continuously conveys the circulating mud, it also conveys the circulating mud into the sealing block 33. After passing through the sealing block 33, the circulating mud enters the inside of the sampling tube 6 for reception and storage, thereby realizing automatic sampling of the equipment.

[0075] After sampling is completed, the first telescopic component 41 is activated again. While the first telescopic component 41 moves the moving box 4 to the left, the elastic contraction component 32 simultaneously moves the sealing block 33 to the left, so as to realize the synchronous reset adjustment of the moving box 4 and the sealing block 33. The moving box 4 is reset to the storage state, waiting for maintenance personnel to take out the sampling tube 6.

[0076] To facilitate the conveying of mud through the conveying pipe 2, the first telescopic component 41 drives the sampling tube 6 to extend and retract, thereby enabling timed and quantitative sampling of mud within the conveying pipe 2. This prevents mud from splashing during sampling, eliminates the need for manual hand tools, and allows for automatic sampling at regular intervals and timed intervals and sealed storage of the sampling tube 6 during the continuous conveying of mud through the mud conveying pipeline.

[0077] During the process of the first telescopic component 41 driving the mobile box 4 to switch from the storage state to the sampling state, the pipe opening of the delivery pipe 2 is simultaneously connected to the guide oblique hole 330, and the sealing block 33 is inserted into the interior of the delivery pipe 2.

[0078] During the process of the first telescopic member 41 driving the movable box 4 to switch from the storage state to the docking state, while maintaining the connection between the pipe opening of the conveying pipe 2 and the guide oblique hole 330, the sealing block 33 is simultaneously driven to retract into the limiting plate 31.

[0079] As a preferred embodiment, the sealing block 33 may be coated with an anti-stick coating to prevent the received mud from adhering to the area of ​​the guide orifice 330 and to ensure the stability of the mud flowing downward.

[0080] Please refer to it again. Figure 2 As another preferred embodiment, a three-way valve can be provided on the connecting pipe 11, one end of which is connected to the water pipe interface and the other end is connected to the outside. A drain port 102 is provided at the bottom of the mounting box 1. When the movable box 4 is in the storage state, the drain port 102 is connected to the output port of the sealing block 33.

[0081] When the movable box 4 is in the storage state, the drain port 102 is connected to the output port of the sealing block 33, the input port of the sealing block 33 is connected to the output port of the connecting pipe 11, the inlet of the connecting pipe 11 is connected to the water pipe interface of the three-way valve, and the drain port 102 is connected to the drain pipe, which facilitates flushing and maintenance of the inside of the sealing block 33.

[0082] To ensure that when the mobile box 4 is in the storage state, the drain outlet 102 is automatically connected to the sealing block 33, and water is injected through the connecting pipe 11, it is convenient to clean and maintain the inside of the sealing block 33 after sampling, ensuring the sampling quality of the equipment in subsequent use and extending the service life of the equipment.

[0083] Please refer to it again. Figure 2 In this embodiment, the first telescopic member 41 is horizontally arranged and fixedly connects the mounting box 1 and the movable box 4.

[0084] The first telescopic component 41 is a telescopic cylinder or an electric telescopic rod, used to drive the movable box 4 to move horizontally and adjust along the range of the mounting box 1.

[0085] Please refer to it again. Figure 1 The installation box 1 is equipped with a central control screen 10.

[0086] The central control screen 10 is a touch screen, which is used to record the sampling time, adjust the on / off state of the device, and display the current sampling status.

[0087] Please refer to the following: Figure 2 and Figure 6 The sampling tube 6 is equipped with a label 61, and the central control screen 10 is integrated with a visual recognition device 101.

[0088] The mud sampling device also includes a support mechanism 5, which is installed inside the movable box 4. The support mechanism 5 includes a second telescopic member 51 and a bracket 52. The second telescopic member 51 is used to lift the bracket 52, and the bracket 52 is used to install the sampling tube 6.

[0089] The lifting range of the sampling tube 6 is set to correspond to the monitoring range of the visual recognition device 101; before the sampling tube 6 is lifted, the visual recognition device 101 is used to identify the sampling personnel; after the sampling tube 6 is lifted, the label 61 faces the visual recognition device 101, and the visual recognition device 101 is used to identify the label 61 on the sampling tube 6.

[0090] In this embodiment, the label 61 is used to mark the sampling tube 6 to facilitate the registration and description of subsequent test data. Each sampling tube 6 used is labeled with a different label 61.

[0091] The visual recognition device 101 can be a miniature camera. The visual recognition device 101 is connected to the central control screen 10 by signal, and is used to identify and record the sampling personnel (using facial recognition technology to achieve identity authentication and authorization); on the other hand, it is used to identify and record the installation time and removal time of the label 61 on the sampling tube 6, providing an automatic shooting and recording function for subsequent detection records and reports.

[0092] In this embodiment, the second telescopic member 51 is fixedly connected to the movable box 4 and the bracket 52. The second telescopic member 51 is an electric telescopic rod or a hydraulic cylinder, used to independently drive the lifting and lowering adjustment of the bracket 52.

[0093] The bottom of the sampling tube 6 is inserted into the bracket 52, and the top of the sampling tube 6 is flush with the top of the movable box 4 to ensure the sliding seal when the top of the sampling tube 6 contacts the mounting box 1.

[0094] The second telescopic component 51 provides upward lifting power for the installed sampling tube 6 through the bracket 52, facilitating the shooting and recording by the visual recognition device 101 and manual tube removal; on the other hand, by adjusting the usage height of the bracket 52, it can also meet the installation requirements of the sampling tube 6 at different depths, so as to adapt to the installation and use requirements of the sampling tube 6 at different depths.

[0095] In this embodiment, a pressure sensor may be installed on the bracket 52. The output end of the pressure sensor is connected to the central control screen 10 for signal identification of the status information of the sampling tube 6 on the bracket 52.

[0096] The sampling tube 6 is inserted inside the bracket 52, and after installation, the bottom of the sampling tube 6 abuts against the pressure sensor. The pressure sensor facilitates the identification of the sampling weight and sampling result inside the sampling tube 6, thereby feeding the sampling result back to the central control screen 10 for display.

[0097] Furthermore, the central control screen 10 is signal-connected to the first telescopic component 41. When the pressure detected by the pressure sensor reaches a preset pressure, the central control screen 10 automatically controls the first telescopic component 41 to start. The first telescopic component 41 drives the moving box 4 and the sealing block 33 to automatically disengage from the sampling state.

[0098] When the mobile box 4 is in the sampling state, and the weight of the sampling tube 6 reaches the preset weight, the first telescopic component 41 is automatically activated. The first telescopic component 41 drives the mobile box 4 to switch from the sampling state to the docking state, which facilitates automatic control of the equipment during sampling.

[0099] Please refer to it again. Figure 1In this embodiment, a limiting slide rail structure is provided at the connection between the movable box 4 and the mounting box 1. This provides stable support and limiting for the horizontal movement adjustment of the movable box 4.

[0100] The working principle of the mud sampling device provided in this embodiment is as follows:

[0101] Automatic sampling principle:

[0102] Before sampling, an empty sampling tube 6 is inserted into the bracket 52, and the label 61 is kept facing the visual recognition device 101.

[0103] like Figure 7 As shown in (a), it can be defined that in the initial state, the movable box 4 is in the storage state, the movable box 4 is separated from the synchronization plate 34, and the blocking block 33 is completely stored in the limiting plate 31;

[0104] Please refer to the following: Figure 7 (a) to Figure 7 (c) When sampling, the first telescopic component 41 is activated, and the first telescopic component 41 drives the moving box 4 to move to the right. The moving box 4 first abuts against the synchronization plate 34, so that the moving box 4 switches from the storage state to the docking state. At this time, the inlet of the sampling tube 6 is docked and connected with the guide oblique hole 330.

[0105] When the first telescopic member 41 continues to drive the moving box 4 to move to the right, the moving box 4 drives the blocking block 33 to move to the right through the synchronization plate 34. The blocking block 33 moves to the right and inserts into the interior of the delivery pipe 2, so that the moving box 4 switches from the docking state to the sampling state. At this time, the guide oblique hole 330 connects the inlet of the delivery pipe 2 and the sampling pipe 6.

[0106] The circulating mud continuously transported in the conveying pipe 2 is conveyed into the sampling pipe 6 through the guide inclined hole 330 until the circulating mud injected into the sampling pipe 6 reaches the preset weight standard, and a reserved storage space is provided inside the sampling pipe 6 to support the subsequent fall and storage of residual circulating mud.

[0107] like Figure 7 As shown in (c), the moving box 4 is in the sampling state, the moving box 4 abuts against the synchronization plate 34, and the guide oblique hole 330 connects the sampling tube 6 and the delivery tube 2;

[0108] After the sample weight meets the standard:

[0109] Please refer to the following: Figure 7 (c) to Figure 7(b) Activate the first telescopic member 41. The first telescopic member 41 drives the moving box 4 to move to the left as a whole. The elastic contraction member 32 drives the sealing block 33 to contract adaptively, so that the sealing block 33 is completely retracted into the interior of the limiting plate 31. During this period, the synchronization plate 34 maintains contact with the moving box 4 so that after sampling, the residual circulating mud in the guide inclined hole 330 can fall stably and be stored in the interior of the sampling tube 6.

[0110] Please refer to the following: Figure 7 (b) to Figure 7 (a) After the circulating mud remaining in the sealing block 33 falls into the interior of the sampling tube 6, the first telescopic component 41 is activated again. The first telescopic component 41 drives the moving box 4 to move to the left as a whole, so that the moving box 4 switches from the docking state to the storage state, reducing the loss of water from the circulating mud sampled in the sampling tube 6, improving the stability after sampling, and waiting for the testing personnel to arrive at the site to take away the sampling tube 6.

[0111] Ultimately, during the process of the mobile box 4 switching from the storage state to the sampling state, the sealing block 33 is simultaneously inserted into the delivery pipe 2 for sampling. After sampling is completed, the first telescopic component 41 is automatically activated. During the process of the mobile box 4 switching from the sampling state to the storage state, it is also possible to ensure that the circulating mud in the guide orifice 330 falls stably into the sampling pipe 6, thereby reducing the residue of circulating mud in the sealing block 33.

[0112] Similarly, when it is necessary to remove and replace sampling tube 6:

[0113] When the first telescopic component 41 is activated, the first telescopic component 41 first drives the entire movable box 4 to move to the left, and the movable box 4 switches from the storage state to the discharge state.

[0114] Please refer to the following: Figure 7 (d) to Figure 7 (e) Activate the second telescopic component 51. The second telescopic component 51 drives the bracket 52 to move upward. The bracket 52 lifts the sampling tube 6 after sampling is completed from above the moving box 4, so that the label 61 is aligned with the shooting range of the visual recognition device 101. On the one hand, this facilitates the visual recognition device 101 to automatically shoot and record the label 61, providing data support for the subsequent information editing and management of the test report; on the other hand, it facilitates the removal and replacement of the sampling tube 6.

[0115] After the sampling tube 6 is identified and removed as described above, the sampling tube 6 for the next use is reinserted into the moving box 4, while keeping the label 61 aligned with the visual recognition device 101 to complete the automatic photo registration of the sampling tube 6; the second telescopic member 51 drives the bracket 52 to move down, so that the sampling tube 6 is completely retracted into the moving box 4; then the first telescopic member 41 drives the moving box 4 to move to the right as a whole, so that the moving box 4 switches from the discharging state to the storage state, so that the new sampling tube 6 can be restored to the storage state after replacement;

[0116] While the first telescopic member 41 drives the mobile box 4 to switch from the storage state to the discharge state, the second telescopic member 51 drives the bracket 52 to move upward relative to the mobile box 4, so as to facilitate the automatic recording and quick replacement of the sampling tube 6.

[0117] Second Embodiment

[0118] Please refer to the following: Figures 8 to 9 Based on the mud sampling device provided in the first embodiment of the present invention, the second embodiment of the present invention proposes another mud sampling device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0119] Specifically, the difference in the mud sampling device provided in the second embodiment of the present invention is that the movable box 4 is provided with a limiting sliding hole 40, the bracket 52 is in the form of a ring structure, the bracket 52 is slidably installed in the movable box 4, the top end of the sampling tube 6 is provided with a tapered tube opening structure, and the bracket 52 is assembled below the tapered tube opening structure.

[0120] The second telescopic member 51 is an L-shaped rod. The top of the second telescopic member 51 is fixedly connected to the bottom of the bracket 52. The bottom of the second telescopic member 51 passes through the limiting sliding hole 40 and is slidably connected to the moving box 4. The first telescopic member 41 is inclined. The two ends of the first telescopic member 41 are respectively hinged to the mounting box 1 and the bottom of the second telescopic member 51.

[0121] The limiting slide rail structure allows the sampling tube 6 to be lifted upwards when the moving box 4 is unfolded from the mounting box 1, but the moving box 4 cannot be fully extended and out of the range of the mounting box 1.

[0122] In this embodiment, when the mobile box 4 is in the storage state, docking state, or sampling state, the first telescopic member 41 is arranged at an angle, the bracket 52 is completely stored in the mobile box 4, and the telescopic part of the first telescopic member 41 is affected by its own weight, which can maintain the downward pressure on the second telescopic member 51 and the bracket 52, and is used to support the top of the sampling tube 6. The first telescopic member 41 can also continue to be used to drive the mobile box 4 to move and adjust horizontally.

[0123] Please see Figure 10 (a) When the moving box 4 is adjusted to the discharge state, the first telescopic member 41 is arranged at an angle, and the telescopic part of the first telescopic member 41 abuts against the inner wall of the mounting box 1 and slides in contact. In this state, the first telescopic member 41 is used to drive the second telescopic member 51 and the bracket 52 to adjust the height relative to the moving box 4, so that the sampling tube 6 can be quickly taken out from the moving box 4 after sampling.

[0124] Please see Figure 10 The principle by which the first telescopic member 41 drives the bracket 52 to extend and retract:

[0125] When the sampling tube 6, after sampling is completed, needs to be removed, the first telescopic component 41 is activated. The first telescopic component 41 first drives the moving box 4 to move to the left as a whole. The moving box 4 then drives the second telescopic component 51, the bracket 52, and the sampling tube 6 to move to the left as a whole until the moving box 4 is adjusted to the discharge state. The telescopic part of the first telescopic component 41 abuts against the inner wall of the mounting box 1.

[0126] When the movable box 4 is in the discharge state, as the telescopic part of the first telescopic member 41 continues to extend, the telescopic part of the first telescopic member 41 slides upward along the inner wall of the mounting box 1, and simultaneously drives the bracket 52 to move upward through the second telescopic member 51. The bracket 52 drives the sampling tube 6 to move upward, so that the sampling tube 6 is raised, and the label 61 on the sampling tube 6 is aligned with the detection range of the visual recognition device 101, which also facilitates the removal and replacement of the sampling tube 6.

[0127] Under the driving action of the first telescopic member 41, it is used to drive the state of the moving box 4 to switch. During the state switching process, the upward detection of the sampling tube 6 can also be realized simultaneously, which facilitates the replacement of the sampling tube 6.

[0128] The working principle of the mud sampling device provided in this embodiment:

[0129] Step S1: When it is necessary to take out the sampling tube 6 in the storage state, the first telescopic member 41 is activated. The first telescopic member 41, through the second telescopic member 51 and the bracket 52, first drives the moving box 4 to move to the left and switch to the discharge state. During this period, the sampling tube 6 is stored in the moving box 4.

[0130] In step S2, after the moving box 4 switches to the discharge state, the moving box 4 can no longer move to the left. When the first telescopic member 41 continues to extend, the second telescopic member 51 pushes the bracket 52 to move upward relative to the moving box 4. The bracket 52 drives the sampling tube 6 to move upward to the detection range of the visual recognition device 101. The visual recognition device 101 automatically takes pictures and records the label 61 to facilitate automatic registration and replacement of the sampling tube 6 after it is lifted.

[0131] Step S3: Manually remove the raised sampling tube 6 and reinstall the new sampling tube 6 on the bracket 52.

[0132] While the first telescopic member 41 drives the mobile box 4 to switch from the storage state to the discharge state, the first telescopic member 41 is also used to drive the bracket 52 to move upward relative to the mobile box 4, so as to facilitate the automatic registration and replacement of the sampling tube 6.

[0133] After replacing the sampling tube 6, the first telescopic component 41 is activated again. The first telescopic component 41 first drives the bracket 52 to move down relative to the moving box 4 through the second telescopic component 51, so that the replaced sampling tube 6 is completely retracted into the moving box 4.

[0134] Subsequently, the first telescopic member 41 drives the entire moving box 4 to the right through the second telescopic member 51 and the bracket 52, so that the moving box 4 switches from the discharging state to the storage state, so that the sampling tube 6 can be restored to the storage state after replacement.

[0135] This invention also provides a method for drilling across land and sea.

[0136] A method for drilling across land and sea includes the following steps:

[0137] S1: Land end pilot hole drilling: The drill bit trajectory is controlled by a geomagnetic guidance system to form an initial pilot hole of a preset diameter;

[0138] S2: Multi-stage hole enlargement and cleaning: The diameter of the initial guide hole is enlarged to the preset enlargement diameter through a seven-stage hole enlargement process, and the hole is cleaned by using a hole enlarger and circulating mud. During the circulation of the circulating mud, the mud sampling device is used to periodically sample and analyze the circulating mud.

[0139] S3: Pre-treatment before pipeline delivery: The full penetration welding process of carbon dioxide shielded welding is adopted. After the weld is qualified by UT inspection, the inner and outer walls of the pipeline are coated with anti-corrosion coating.

[0140] S4: Pipeline pushing: The land-based pipe pusher and the sea vessel apply force simultaneously. The land-based pipe pusher clamps the pushed pipeline and pushes it in sections through a pipe gripper. The sea vessel adjusts the water entry angle of the pushed pipeline through an anchoring system.

[0141] S5: The offshore vessel assists in pipe pulling: the construction vessel is equipped with a directional drilling rig connected to the drill rod to pull the pipe, and the attitude of the pushed pipe is monitored in real time;

[0142] S6: Real-time monitoring and correction: The system uses a geomagnetic guidance system and underwater sonar for joint monitoring and dynamic adjustment of push and pull parameters.

[0143] Specifically, in step S2, the seven-stage reaming process has a stage difference of 100mm, and the reaming direction is from sea to land. After each stage of reaming, environmentally friendly drilling mud is injected. The drilling mud parameters are: Marsh funnel viscosity 90-120s, plastic viscosity 30-65mPa·s; pH value 9-11.

[0144] In step S4, the pipe pusher uses a 500t hydraulic drive device, the pipe clamping force is 85%-90% of the upper limit of the pipe's compressive strength, and a roller frame is set below the pipe with a friction coefficient ≤0.15.

[0145] In step S5, the construction vessel is equipped with a dynamic positioning system (DP), the anchoring distance is 3-5 times the length of the vessel, and the pulling angle deviates from the pipeline axis by ≤2°.

[0146] In step S6, distributed fiber optic sensors are used to monitor pipeline stress. When the deviation exceeds the design radius of curvature, the deviation is corrected by adjusting the clamping position of the pipe pusher or the tension of the ship's anchor chain.

[0147] Ultimately, this will improve construction efficiency by 40%, reduce the pullback time of 1300 meters of pipeline to ≤6 days, reduce pullback force by 30%, reduce pipeline deformation rate to <0.1%, and achieve a mud recycling rate of ≥95%, thereby reducing pollution to the marine environment.

[0148] Specific construction process:

[0149] 1. Construction preparation;

[0150] A GD6000-L directional drilling rig is installed on land, and a construction vessel (64.2m long and 12m wide) is deployed at sea.

[0151] The pipeline uses Q355B steel pipe (Φ720×20mm), with a single length of 12m, and is welded in two sections on site.

[0152] A circulating mud system is constructed, and the mud sampling device is installed in the circulating mud system.

[0153] 2. Pilot hole construction:

[0154] Using the KY-100 geomagnetic guidance system, the drill bit positioning error is ≤0.2m;

[0155] When traversing the coral zone, the drilling speed was reduced to 5 m / h, and the mud flow rate was increased by 20%.

[0156] 3. Hole enlargement and cleaning:

[0157] Seven-stage hole enlargement parameters: 400mm→500mm→600mm→700mm→800mm→900mm→1000mm;

[0158] The content of residual rock cuttings in the borehole after cleaning is ≤3%.

[0159] 4. Pipeline pullback:

[0160] The land-based pipe pusher (500t) is used for segmented propulsion, with each segment having a propulsion force ≤875kN;

[0161] At sea, vessels maintain their position using a DP system, with a traction speed that deviates from the land-based propulsion speed by ≤0.1m / min.

[0162] 5. Quality Inspection:

[0163] The weld seam UT inspection pass rate is 100%, and the anti-corrosion layer electric spark test voltage is ≥15kV;

[0164] The final burial depth error of the pipeline is ≤ ±0.5m, and the radius of curvature is ≥1500D (D is the diameter of the pipeline).

[0165] Dynamic correction operation:

[0166] When the fiber optic sensor detects that local stress exceeds the limit, perform the following operations:

[0167] 1. Reduce the tube pusher's feed speed to 50%;

[0168] 2. Adjust the tension of the ship's anchor chain to restore the pipeline axis deflection angle to within the design range;

[0169] 3. Inject additional bentonite slurry to lubricate the borehole walls.

[0170] The specific structure of the mud sampling device is as described in the above embodiments. Since the method of drilling across land and sea adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0171] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A mud sampling device, characterized in that, include: The mounting box is equipped with a connecting pipe at its top; A connecting mechanism includes a limiting plate, a sealing block, an elastic contraction member, and a synchronization plate. The limiting plate is fixedly disposed within the mounting box and has an adjustment sliding hole. The sealing block is slidably installed between the mounting box and the limiting plate. The two ends of the elastic contraction member are respectively fixedly connected to the mounting box and the sealing block. The top of the synchronization plate passes through the adjustment sliding hole and is fixedly connected to the bottom of the limiting plate. A movable box is slidably inserted into the mounting box body. A sampling tube is installed inside the movable box. A first telescopic component is used to drive the movable box to move toward the synchronization plate. A conveying pipe is offset from the first telescopic component, and the conveying pipe passes sequentially through the bottom end of the mounting box, the limiting plate, and the top end of the mounting box. The delivery pipe is provided with a sampling port, and the sealing block is provided with a flow guiding oblique hole; In the initial state, the sealing block blocks the sampling port, the guide orifice connects the connecting pipe to the inside of the mounting box, and the port of the sampling pipe, the output port of the guide orifice and the synchronization plate are arranged in sequence.

2. The mud sampling device according to claim 1, characterized in that, The sealing block is coated with an anti-stick coating.

3. The mud sampling device according to claim 1, characterized in that, The first telescopic component is horizontally positioned and is fixedly connected to the mounting box and the movable box.

4. The mud sampling device according to claim 1, characterized in that, The installation box is equipped with a central control screen.

5. The mud sampling device according to claim 4, characterized in that, The sampling tube is labeled, and the central control screen is equipped with a visual recognition device. The mud sampling device further includes a support mechanism installed inside the movable box; the support mechanism includes a second telescopic member and a bracket, the second telescopic member being used to lift the bracket, and the bracket being used to install the sampling tube.

6. The mud sampling device according to claim 5, characterized in that, A pressure sensor is installed on the bracket, and the output of the pressure sensor is connected to the signal of the central control screen.

7. The mud sampling device according to claim 6, characterized in that, The central control screen is connected to the first telescopic component via a signal. When the pressure detected by the pressure sensor reaches a preset pressure, the central control screen automatically controls the first telescopic component to start.

8. The mud sampling device according to claim 7, characterized in that, A limit slide rail structure is provided at the connection between the movable box and the mounting box.

9. The mud sampling device according to claim 8, characterized in that, The movable box has a limiting sliding hole, the bracket has a circular structure, the bracket is slidably installed in the movable box, the top of the sampling tube is provided with a tapered tube opening structure, and the bracket is assembled below the tapered tube opening structure. The second telescopic component is an L-shaped rod. The top of the second telescopic component is fixedly connected to the bottom of the bracket. The bottom of the second telescopic component passes through the limiting sliding hole and is slidably connected to the movable box. The first telescopic component is inclined. The two ends of the first telescopic component are respectively hinged to the mounting box and the bottom of the second telescopic component.

10. A method for drilling across land and sea, characterized in that, Includes the following steps: S1: Land end pilot hole drilling: The drill bit trajectory is controlled by a geomagnetic guidance system to form an initial pilot hole of a preset diameter; S2: Multi-stage hole enlargement and cleaning: The diameter of the initial guide hole is enlarged to a preset enlargement diameter through a seven-stage hole enlargement process, and the hole is cleaned by using a hole enlarger and circulating mud. During the circulation of the circulating mud, the mud sampling device as described in any one of claims 1-9 is used to periodically sample and analyze the circulating mud. S3: Pre-treatment before pipeline delivery: The full penetration welding process of carbon dioxide shielded welding is adopted. After the weld is qualified by UT inspection, the inner and outer walls of the pipeline are coated with anti-corrosion coating. S4: Pipeline pushing: The land-based pipe pusher and the sea vessel apply force simultaneously. The land-based pipe pusher clamps the pushed pipeline and pushes it in sections through a pipe gripper. The sea vessel adjusts the water entry angle of the pushed pipeline through an anchoring system. S5: The offshore vessel assists in pipe pulling: the construction vessel is equipped with a directional drilling rig connected to the drill rod to pull the pipe, and the attitude of the pushed pipe is monitored in real time; S6: Real-time monitoring and correction: The system uses a geomagnetic guidance system and underwater sonar for joint monitoring and dynamic adjustment of push and pull parameters.

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