Slurry sampling device and sea-land crossing drilling construction method

Abstract

The invention provides a slurry sampling device and a sea-land crossing drilling construction method. The mud sampling device comprises a mounting box body, wherein a connecting pipe is arranged at the top of the mounting box body; and the connecting mechanism comprises a limiting plate, a plugging block, an elastic contraction piece and a synchronous plate. The invention discloses a sea-land crossing drilling construction method. The method comprises the following steps: S1, drilling a guide hole in a land end; according to the scheme, in the process that the conveying pipe conveys the slurry, the sampling pipe is conveniently driven by the first telescopic piece to be adjusted in a telescopic mode, so that the slurry is sampled regularly and quantitatively within the range of the conveying pipe, the slurry is prevented from splashing during sampling, and manual sampling is not needed; in the continuous slurry conveying process of the slurry conveying pipeline, regular and timed automatic sampling of the equipment and sealed storage of the sampling pipe are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of mud sampling, in particular to a mud sampling device and a method for sea-land crossing drilling construction. Background Art

[0002] During directional drilling from land to sea, a circulating mud treatment system is required. This system processes the circulating mud fluid to ensure it can be reused during the directional drilling process. During this recycling process, the recycled mud must be regularly sampled and analyzed to ensure it meets recycling standards and prevent substandard circulating 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 discharged is manually received at the newly prepared circulating mud output port by manually holding a sampling tube; in the middle stage, the circulating mud discharged is manually received at the port after the circulating mud is filtered and purified by manually holding a sampling tube.

[0004] The above sampling method relies too much on manual operation after the slurry has been recycled for a preset period, which can easily cause splashing of the slurry and is inconvenient for regular and timely rapid sampling.

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

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

[0007] In order to solve the above technical problems, the present invention provides a mud sampling device comprising: An installation box body, wherein a connecting pipe is provided on the top of the installation box body; The connecting mechanism includes a limit plate, a blocking block, an elastic contraction member and a synchronization plate. The limit plate is fixedly arranged in the installation box body, an adjustment sliding hole is opened in the limit plate, the blocking block is slidably installed between the installation box body and the limit plate, and the two ends of the elastic contraction member are respectively fixedly connected to the installation box body and the blocking block; the top of the synchronization plate passes through the adjustment sliding hole and is fixedly connected to the bottom of the limit plate; A movable box is inserted into and slid into the installation box body, a sampling tube is installed in the movable box, and a first telescopic member is used to drive the movable box to move toward the synchronization plate; a delivery pipe, wherein the delivery pipe is staggered with the first telescopic member, and the delivery pipe sequentially passes through the bottom end of the installation box body, the limiting plate, and the top end of the installation box body; Wherein, a sampling port is provided on the delivery pipe, and a diversion inclined hole is provided on the blocking block; In the initial state, the blocking block blocks the sampling port, the diversion inclined hole connects the connecting pipe and the interior of the installation box, and the pipe mouth of the sampling pipe, the output port of the diversion inclined hole and the synchronization plate are arranged in sequence.

[0008] Preferably, an anti-stick coating is sprayed inside the blocking block.

[0009] Preferably, the first telescopic member is arranged horizontally and fixedly connects the installation box body and the movable box.

[0010] Preferably, a central control screen is provided on the installation box body.

[0011] Preferably, a label is provided on the sampling tube, and a visual recognition device is integrated on the central control screen; The mud sampling device further includes a supporting mechanism, which is installed in the movable box; the supporting mechanism includes a second telescopic member and a bracket, the second telescopic member is used to lift the bracket, and the bracket is used to install the sampling tube.

[0012] Preferably, a pressure sensor is installed on the bracket, and the output end of the pressure sensor is connected to the central control screen signal.

[0013] Preferably, the central control screen is connected to the first telescopic member signal, and when the pressure detected by the pressure sensor reaches a preset pressure, the central control screen automatically controls the first telescopic member to start.

[0014] Preferably, a limited slide rail structure is provided at the connection between the movable box and the installation box body.

[0015] Preferably, a limited sliding hole is provided on the movable box, the bracket is in a circular ring structure, the bracket is slidably installed in the movable box, the top end of the sampling tube is provided with a conical nozzle structure, and the bracket is assembled below the conical nozzle structure; The second telescopic member is an L-shaped rod, the top of the second telescopic member is fixedly connected to the bottom of the bracket, the bottom of the second telescopic member passes through the limiting sliding hole and is slidably connected to the moving box, the first telescopic member is tilted, and the two ends of the first telescopic member are respectively hinged to the installation box body and the bottom of the second telescopic member.

[0016] In order to solve the above technical problems, the present invention also provides a method for sea-land crossing drilling construction, comprising the following steps: S1: Pilot hole drilling on land: A geomagnetic guidance system is used to control the drill bit trajectory to form an initial pilot hole of a preset diameter; S2: Multi-stage hole enlargement and hole cleaning: The diameter of the initial pilot hole is enlarged to a preset enlarged diameter through a seven-stage hole enlargement process, and the hole is cleaned using a hole reamer and circulating mud. During the circulating mud circulation treatment, the circulating mud is regularly sampled and analyzed using the mud sampling device; S3: Pretreatment before pipeline pushing: Use carbon dioxide shielded welding full penetration welding process, and after the weld passes the UT test, apply anti-corrosion coating on the inner and outer walls of the pushing pipeline; S4: Pipeline pushing: The land-based pipe pusher and the offshore vessel apply force synchronously. The land-based pipe pusher clamps the pushed pipe through the pipe gripper and pushes it forward in sections. The offshore vessel adjusts the entry angle of the pushed pipe through the anchoring system. S5: The offshore vessel assists in pulling the pipe: the construction vessel carries a directional drilling rig connected to the drill pipe to pull the pipe, and monitors the posture of the pushed pipe in real time; S6: Real-time monitoring and correction: Use the geomagnetic guidance system and underwater sonar for joint monitoring and dynamic adjustment of push and pull parameters.

[0017] Compared with related technologies, the mud sampling device provided by the present invention has the following beneficial effects: In the process of conveying mud by the conveying pipe, the sampling tube is driven to be telescopically adjusted by the first telescopic member to realize regular and quantitative sampling of mud within the range of the conveying pipe, thereby preventing mud from splashing during sampling. No manual hand-held tools are required. In the process of continuous mud conveying by the mud conveying pipeline, the equipment can realize regular and automatic sampling and sealed storage of the sampling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 A three-dimensional diagram of a preferred embodiment of the mud sampling device provided by the present invention; Figure 2 for Figure 1 The AA section view shown; Figure 3 for Figure 2 BB cross-section shown; Figure 4 for Figure 2 The CC section view shown; Figure 5 for Figure 2 a three-dimensional drawing of the bracket shown; Figure 6 for Figure 2 A three-dimensional diagram of the position of the sampling tube corresponding to the visual identification device after it is lifted up; Figure 7 The sampling principle diagram of the first embodiment of the mud sampling device provided by the present invention, wherein: Figure 7 (a) is a cross-sectional view of the mobile box in the storage state, Figure 7 (b) is a cross-sectional view of the mobile box in the docking state. Figure 7 (c) is a cross-sectional view of the mobile box in the sampling state; Figure 7 (d) is a structural diagram of the mobile box in the expanded state. Figure 7 (e) is a schematic diagram of the structure of the bracket in the lifted state; Figure 8 A schematic structural diagram of a second embodiment of the mud sampling device provided by the present invention; Figure 9 for Figure 8 a three-dimensional drawing of the bracket shown; Figure 10 The schematic diagram of the mobile box discharging of the mud sampling device provided by the present invention, wherein: Figure 10 (a) is a front view of the mobile box in the storage state, Figure 10 (b) is the front view of the mobile box in the discharging state, Figure 10 (c) is a front view of the mobile box in the lifted state.

[0020] Description of Figure Numbers: 1. Installation box; 11. Connecting pipe; 10. Central control screen; 101. Visual recognition device; 102. Sewage outlet; 2. Delivery pipe; 3. Connecting mechanism; 31. Limiting plate; 310. Adjusting sliding hole; 32. Elastic contraction member; 33. Blocking block; 330. Diversion inclined hole; 34. Synchronizing plate; 4. Moving box; 41. First telescopic member; 40. Limiting sliding hole; 5. Support mechanism; 51. Second telescopic member; 52. Bracket; 6. Sampling tube; 61. Label.

[0021] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] The invention provides a mud sampling device. First embodiment

[0024] Please refer to Figures 1 to 4 In a first embodiment of the present invention, a mud sampling device includes: The installation box body 1 is provided with a connecting pipe 11 on the top of the installation box body 1; The connecting mechanism 3 includes a limit plate 31, a blocking block 33, an elastic contraction member 32, and a synchronization plate 34. The limit plate 31 is fixedly arranged in the installation box body 1. An adjustment sliding hole 310 is opened on the limit plate 31. The blocking block 33 is slidably installed between the installation box body 1 and the limit plate 31. The two ends of the elastic contraction member 32 are respectively fixedly connected to the installation box body 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 limit plate 31. A movable box 4 is inserted into and slid into the mounting box body 1 . A sampling tube 6 is installed in the movable box 4 . A first telescopic member 41 is used to drive the movable box 4 to move toward the synchronization plate 34 . The delivery pipe 2 is staggered with the first telescopic member 41 , and the delivery pipe 2 sequentially passes through the bottom end of the installation box body 1 , the limiting plate 31 , and the top end of the installation box body 1 ; The delivery pipe 2 is provided with a sampling port, and the blocking block 33 is provided with a diversion inclined hole 330; In the initial state, the blocking block 33 blocks the sampling port, the diversion inclined hole 330 connects the connecting pipe 11 with the interior of the installation box 1, and the pipe mouth of the sampling tube 6, the output port of the diversion inclined hole 330 and the synchronization plate 34 are arranged in sequence.

[0025] Please refer again Figure 2 In this embodiment, the delivery pipe 2 is a mud delivery pipe in a mud circulation system, which is used to transport mud. When installed, the delivery pipe 2 is installed perpendicular to the ground to ensure that mud can be transported from the top to the bottom of the delivery pipe 2.

[0026] Please refer to Figure 2 and Figure 4The first telescopic member 41 is used to drive the movable box 4 to move rightward. The movable box 4 first abuts against the synchronization plate 34. At the same time, the tube mouth of the sampling tube 6 in the movable box 4 is aligned with the diversion inclined hole 330.

[0027] See also Figure 7 The first telescopic member 41 can drive the blocking block 33 to extend into the conveying pipe 2 through the moving box 4 and the synchronous plate 34.

[0028] Please refer to Figure 7 and Figure 3 When the movable 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 restoration of the blocking block 33, so that the blocking block 33 can be restored from extending into the conveying pipe 2 to blocking the sampling port on the conveying pipe 2.

[0029] In this embodiment, the mobile box 4 includes four usage states: See also Figure 7 (a) Initial state (storage state), the top of the movable box 4 is slidably sealed against the limiting plate 31, and the blocking block 33 blocks the sampling port to ensure that the delivery pipe 2 can deliver the slurry; See also Figure 7 (c) Sampling state: the movable box 4 is connected to the diversion inclined hole 330, the blocking block 33 is inserted into the delivery range of the delivery pipe 2, and the diversion inclined hole 330 is connected to the delivery pipe 2 and the sampling pipe 6; at this time, part of the mud in the delivery pipe 2 enters the sampling pipe 6 through the diversion inclined hole 330, thereby completing the circulating mud sampling; See also Figure 7 (b) In the docking state, the pipe opening of the delivery pipe 2, the diversion inclined hole 330 and the connecting pipe 11 are connected in sequence, the movable box 4 abuts the synchronous plate 34, the blocking block 33 blocks the sampling port, and the delivery pipe 2 continues to transport the mud; the connecting pipe 11 provides external air pressure so that the mud remaining in the diversion inclined hole 330 after sampling can be discharged into the branch sampling pipe 6, thereby reducing the residual mud circulating inside the blocking block 33; See also Figure 7 (d) In the discharging state, the movable box 4 slides out of the mounting box body 1 to facilitate the removal and replacement of the sampling tube 6.

[0030] The diversion inclined hole 330 facilitates the stable flow of the circulating mud remaining in the blocking block 33 into the interior of the sampling tube 6 after the sampling is completed in the sampling tube 6. After the circulating mud remaining in the blocking block 33 is allowed to flow into the interior of the sampling tube 6 while standing, the movable box 4 is moved to the storage state, thereby reducing the connection between the circulating mud in the sampling tube 6 and the external environment after the sampling is completed, reducing water loss, and ensuring the stability of the various components of the circulating mud after sampling.

[0031] Please refer to Figure 2 and Figure 3 , the specific sampling principle is as follows: When sampling of the circulating mud is required, the first telescopic member 41 is activated, and the first telescopic member 41 first drives the movable box 4 to move rightward, and the movable box 4 first abuts against the synchronization plate 34. At the same time, the sampling tube 6 in the movable box 4 is aligned and connected to the diversion inclined hole 330. When the moving box 4 continues to move right, the moving box 4 drives the blocking block 33 to move right through the synchronization plate 34 and inserts it into the interior of the delivery pipe 2; while the delivery pipe 2 continues to deliver the circulating mud, it also delivers the circulating mud into the blocking block 33. After passing through the blocking block 33, the circulating mud enters the interior of the sampling tube 6 for reception and storage, realizing automatic sampling of the equipment; After the sampling is completed, the first telescopic member 41 is started again. While the first telescopic member 41 drives the mobile box 4 to move left, the elastic contraction member 32 simultaneously drives the blocking block 33 to move left, so as to realize the synchronous reset adjustment of the mobile box 4 and the blocking block 33; the mobile box 4 is reset to the storage state, waiting for the maintenance personnel to take out the sampling tube 6.

[0032] In the process of conveying mud by the conveying pipe 2, the sampling tube 6 is driven to be telescopically adjusted by the first telescopic member 41 to realize regular and quantitative sampling of mud within the range of the conveying pipe 2, thereby preventing mud from splashing during sampling. No manual hand-held tools are required. In the process of continuous mud conveying in the mud conveying pipeline, the equipment can realize regular and automatic sampling and sealed storage of the sampling tube 6.

[0033] When the first telescopic member 41 drives the mobile box 4 to switch from the storage state to the sampling state, the nozzle of the delivery tube 2 is connected to the diversion inclined hole 330 and the blocking block 33 is inserted into the interior of the delivery tube 2. When the first telescopic member 41 drives the mobile box 4 to switch from the storage state to the docking state, the pipe mouth of the conveying pipe 2 is maintained in communication with the diversion inclined hole 330 , and the blocking block 33 is synchronously driven to retract into the limiting plate 31 .

[0034] As a preferred embodiment of the present invention, an anti-stick coating may be sprayed inside the blocking block 33 to prevent the received mud from adhering to the range of the diversion inclined hole 330 , thereby ensuring the stability of the mud flowing downward.

[0035] Please refer again Figure 2 As another preferred embodiment of the present invention, a three-way valve can be provided on the connecting pipe 11, one end of the three-way valve is connected to the water pipe interface, and the other end is connected to the outside world; a sewage outlet 102 is provided at the bottom of the installation box body 1, and when the mobile box 4 is in the storage state, the sewage outlet 102 is connected to the output port of the blocking block 33.

[0036] When the mobile box 4 is in the storage state, the sewage outlet 102 is connected to the output port of the blocking block 33, the input port of the blocking block 33 is connected to the output port of the connecting pipe 11, and the inlet of the connecting pipe 11 is connected to the water pipe interface through the three-way valve. The sewage outlet 102 is connected to the sewer pipe, which is convenient for flushing and maintenance of the inside of the blocking block 33.

[0037] In order to meet the requirement that when the mobile box 4 is in the storage state, the sewage outlet 102 is automatically connected to the blocking block 33, and then water is injected through the connecting pipe 11, which facilitates the cleaning and maintenance of the inside of the blocking block 33 after sampling, ensures the sampling quality of the subsequent use of the equipment, and extends the service life of the equipment.

[0038] Please refer again Figure 2 In this embodiment, the first telescopic member 41 is horizontally arranged and fixedly connects the installation box body 1 and the moving box 4 .

[0039] The first telescopic member 41 is a telescopic cylinder or an electric telescopic rod, and is used to drive the moving box 4 to move horizontally along the range of the installation box body 1.

[0040] Please refer again Figure 1 A central control screen 10 is provided on the installation box body 1.

[0041] The central control screen 10 is a touch screen, which is used to record the sampling time on the one hand, and to adjust the switch of the touch operation device on the other hand, and is also used to display the current sampling status.

[0042] Please refer to Figure 2 and Figure 6 , the sampling tube 6 is provided with a label 61, and the central control screen 10 is integrated with a visual recognition device 101; The mud sampling device further includes a supporting mechanism 5 , which is installed in the moving box 4 ; the supporting 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 .

[0043] The lifting range of the sampling tube 6 is set corresponding 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.

[0044] 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 to be used uses a different label 61.

[0045] The visual recognition device 101 can be a miniature camera. It is connected to the central control panel 10 and is used to identify and record the sampling personnel (using facial recognition technology for identity authentication and authorization). It is also used to identify and record the installation and removal time of the label 61 on the sampling tube 6, providing an automatic recording function for subsequent inspection records and reports.

[0046] In this embodiment, the second telescopic member 51 is fixedly connected to the moving box 4 and the bracket 52. The second telescopic member 51 is an electric telescopic rod or a hydraulic cylinder, which is used to independently drive the lifting and lowering adjustment of the bracket 52.

[0047] The bottom of the sampling tube 6 is inserted into the range of the bracket 52 , and the top of the sampling tube 6 is flush with the top of the moving box 4 to ensure the sliding sealing when the top of the sampling tube 6 contacts the installation box body 1 .

[0048] On the one hand, the second telescopic member 51 provides lifting power for the installed sampling tube 6 through the bracket 52, which is convenient for the shooting and recording of the visual recognition device 101 and manual tube removal; on the other hand, by adjusting the use height of the bracket 52, it can also meet the installation 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.

[0049] In this embodiment, a pressure sensor may be installed on the bracket 52 , and the output end of the pressure sensor is connected to the central control screen 10 for signal connection, so as to identify the status information of the sampling tube 6 on the bracket 52 .

[0050] The sampling tube 6 is inserted into the inside of the bracket 52, and the bottom of the sampling tube 6 is in contact with the pressure sensor after installation; the pressure sensor is used to conveniently identify the sampling weight and sampling results inside the sampling tube 6, thereby feeding back the sampling results to the central control screen 10 for displaying the sampling results.

[0051] Furthermore, the central control screen 10 is connected to the first telescopic member 41 by signal. When the pressure detected by the pressure sensor reaches a preset pressure, the central control screen 10 automatically controls the first telescopic member 41 to start. The first telescopic member 41 drives the movable box 4 and the blocking block 33 to automatically leave the sampling state.

[0052] When the mobile box 4 is in the sampling state, when the weight of the sampling tube 6 reaches the preset weight, the first telescopic member 41 is automatically started, and the first telescopic member 41 drives the mobile box 4 to switch from the sampling state to the docking state, facilitating automatic control of the equipment during sampling.

[0053] Please refer again Figure 1 In this embodiment, a limited slide rail structure is provided at the connection between the movable box 4 and the installation box body 1, which provides a stable support and limiting effect for the horizontal movement adjustment of the movable box 4.

[0054] The working principle of the mud sampling device provided in this embodiment is as follows: Automatic sampling principle: Before sampling, the empty sampling tube 6 is loaded onto the bracket 52 in advance, and the label 61 is kept facing the visual recognition device 101; like Figure 7 As shown in (a), it may 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; Please refer to Figure 7 (a) to Figure 7 (c) When sampling, the first telescopic member 41 is activated, which drives the movable box 4 to move rightward. The movable box 4 first contacts the synchronization plate 34, causing the movable box 4 to switch from the storage state to the docking state. At this time, the inlet of the sampling tube 6 is docked and connected with the diversion inclined hole 330; When the first telescopic member 41 continues to drive the movable box 4 to move rightward, the movable box 4 drives the blocking block 33 to move rightward through the synchronization plate 34. The blocking block 33 moves rightward and is inserted into the interior of the delivery tube 2, so that the movable box 4 switches from the docking state to the sampling state. At this time, the diversion inclined hole 330 communicates with the inlet of the delivery tube 2 and the sampling tube 6. The circulating mud continuously conveyed in the conveying pipe 2 is conveyed into the interior of the sampling pipe 6 through the diversion inclined hole 330 until the circulating mud injected into the sampling pipe 6 reaches a preset weight standard, and a reserved storage space is provided inside the sampling pipe 6 to support the subsequent falling storage of the residual circulating mud; like Figure 7 As shown in (c), the movable box 4 is in a sampling state, the movable box 4 abuts against the synchronization plate 34, and the diversion inclined hole 330 communicates with the sampling tube 6 and the delivery tube 2; After the sampling weight reaches the standard: Please refer to Figure 7 (c) to Figure 7 (b) Activating the first telescopic member 41 causes the movable box 4 to move to the left as a whole, and the elastic contraction member 32 causes the blocking block 33 to adaptively contract, so that the blocking block 33 is completely retracted into the interior of the limiting plate 31. During this period, the synchronization plate 34 maintains contact with the movable box 4, so that after sampling is completed, the circulating mud remaining in the diversion inclined hole 330 can stably fall and be stored in the interior of the sampling tube 6; Please refer to Figure 7 (b) to Figure 7 (a) After the circulating mud remaining in the blocking block 33 falls into the interior of the sampling tube 6, the first telescopic member 41 is activated again, and the first telescopic member 41 drives the entire movable box 4 to move leftward, so that the movable box 4 switches from the docking state to the storage state, thereby reducing the water loss of the circulating mud sampled in the sampling tube 6 and improving the stability after sampling, waiting for the inspection personnel to arrive at the site to remove the sampling tube 6; Finally, in the process of switching the mobile box 4 from the storage state to the sampling state, the blocking block 33 is simultaneously inserted into the interior of the conveying pipe 2 for sampling; after the sampling is completed, the first telescopic member 41 is automatically started, and in the process of switching the mobile box 4 from the sampling state to the storage state, it can also ensure that the circulating mud in the diversion inclined hole 330 falls stably into the interior of the sampling tube 6, thereby reducing the residual circulating mud in the blocking block 33.

[0055] Similarly, when the sampling tube 6 needs to be removed and replaced: The first telescopic member 41 is activated, and the first telescopic member 41 first drives the entire movable box 4 to move leftward, and the movable box 4 switches from the storage state to the discharge state; Please refer to Figure 7 (d) to Figure 7(e) Activating the second telescopic member 51, which drives the bracket 52 to move upward, and the bracket 52 drives the sampling tube 6 after sampling to be lifted from above the movable box 4, so that the label 61 is aligned with the shooting range of the visual recognition device 101. On the one hand, it is convenient for 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 is convenient to remove and replace the sampling tube 6; After the sampling tube 6 is identified and removed, the sampling tube 6 to be used next is reinserted into the movable box 4, and the label 61 thereon is kept aligned with the visual recognition device 101, so as to complete the automatic photo registration of the sampling tube 6; the bracket 52 is driven downward by the second telescopic member 51, so that the sampling tube 6 is completely received into the movable box 4; and the movable box 4 is driven to move rightward as a whole by the first telescopic member 41, so that the movable box 4 switches from the discharging state to the storing state, so that the new sampling tube 6 after replacement can be restored to the storing state; While the first telescopic member 41 drives the movable 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 movable box 4 to facilitate automatic recording and rapid replacement of the sampling tube 6. Second embodiment

[0056] Please refer to Figures 8 and 9 Based on the mud sampling device provided by the first embodiment of the present invention, the second embodiment of the present invention provides another mud sampling device. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0057] Specifically, the difference of the mud sampling device provided by the second embodiment of the present invention is that a limited sliding hole 40 is provided on the movable box 4, the bracket 52 is a circular ring structure, and the bracket 52 is slidably installed in the movable box 4, and the top end of the sampling tube 6 is provided with a tapered nozzle structure, and the bracket 52 is assembled below the tapered nozzle structure; 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 tilted, and the two ends of the first telescopic member 41 are respectively hinged to the installation box body 1 and the bottom of the second telescopic member 51.

[0058] The limiting slide rail structure allows the sampling tube 6 to be lifted upward when the movable box 4 is unfolded from the installation box body 1 , but the movable box 4 cannot be fully extended and leave the range of the installation box body 1 .

[0059] 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 gravity, and can maintain the downward pressure on the second telescopic member 51 and the bracket 52 to support the top of the sampling tube 6. The first telescopic member 41 can also continue to be used to drive the horizontal movement adjustment of the mobile box 4.

[0060] See also Figure 10 (a) When the movable box 4 is adjusted to the discharge state, the first telescopic member 41 is arranged at an angle, and the telescopic portion of the first telescopic member 41 abuts against and slides against the inner wall of the mounting box body 1. In this state, the first telescopic member 41 is used to drive the second telescopic member 51 and the bracket 52 to rise and fall relative to the movable box 4, so as to facilitate the rapid removal of the sampling tube 6 from the movable box 4 after sampling is completed.

[0061] See also Figure 10 The principle of the first telescopic member 41 driving the bracket 52 to adjust the telescopic motion is as follows: When the sampling tube 6 needs to be taken out after sampling, the first telescopic member 41 is activated. The first telescopic member 41 first drives the movable box 4 to move left as a whole. The movable box 4 then drives the second telescopic member 51, the bracket 52 and the sampling tube 6 to move left as a whole until the movable box 4 is adjusted to the discharge state. The telescopic portion of the first telescopic member 41 abuts against the inner wall of the mounting box body 1. When the movable box 4 is in the discharging state, the telescopic portion of the first telescopic member 41 continues to extend, and the telescopic portion of the first telescopic member 41 slides upward along the inner wall of the mounting box body 1, and the bracket 52 is synchronously driven to move upward by the second telescopic member 51, and the bracket 52 drives the sampling tube 6 to move upward, so that the sampling tube 6 is lifted up, and the label 61 on the sampling tube 6 is aligned with the detection range of the visual recognition device 101, and the sampling tube 6 is conveniently taken out and replaced; The first telescopic member 41 is driven to switch the state of the movable box 4 . During the state switching process, the lifting detection of the sampling tube 6 can also be realized synchronously, so as to facilitate the replacement of the sampling tube 6 .

[0062] The working principle of the mud sampling device provided in this embodiment is as follows: Step S1: When the sampling tube 6 in the stored state needs to be taken out, the first telescopic member 41 is activated. The first telescopic member 41 first drives the movable box 4 to move leftward through the second telescopic member 51 and the bracket 52 and switches to the discharging state. During this period, the sampling tube 6 is stored in the movable box 4. In step S2, after the movable box 4 switches to the discharge state, the movable box 4 cannot continue to 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 movable box 4. The bracket 52 drives the sampling tube 6 to move upward as a whole to the detection range of the visual recognition device 101. The visual recognition device 101 automatically photographs and records the label 61 to facilitate automatic registration and replacement of the sampling tube 6 after it is lifted up. Step S3 , manually taking out the lifted sampling tube 6 and reinstalling a new sampling tube 6 on the bracket 52 .

[0063] While the first telescopic member 41 drives the movable 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 movable box 4 to facilitate automatic registration and replacement of the sampling tube 6.

[0064] After the sampling tube 6 is replaced, the first telescopic member 41 is activated again. The first telescopic member 41 first drives the bracket 52 to move downward relative to the movable box 4 through the second telescopic member 51, so that the replaced sampling tube 6 is completely stored in the interior of the movable box 4. Afterwards, the first telescopic member 41 drives the movable box 4 to move right as a whole through the second telescopic member 51 and the bracket 52, so that the movable box 4 switches from the discharging state to the storage state, so that the sampling tube 6 is restored to the storage state after replacement.

[0065] The present invention also provides a method for sea-land crossing drilling construction.

[0066] A method for sea-land crossing drilling construction comprises the following steps: S1: Pilot hole drilling on land: A geomagnetic guidance system is used to control the drill bit trajectory to form an initial pilot hole of a preset diameter; S2: Multi-stage hole enlargement and hole cleaning: The diameter of the initial pilot hole is enlarged to a preset enlarged diameter through a seven-stage hole enlargement process, and the hole is cleaned using a hole reamer and circulating mud. During the circulating mud circulation treatment, the circulating mud is regularly sampled and analyzed using the mud sampling device; S3: Pretreatment before pipeline pushing: Use carbon dioxide shielded welding full penetration welding process, and after the weld passes the UT test, apply anti-corrosion coating on the inner and outer walls of the pushing pipeline; S4: Pipeline pushing: The land-based pipe pusher and the offshore vessel apply force synchronously. The land-based pipe pusher clamps the pushed pipe through the pipe gripper and pushes it forward in sections. The offshore vessel adjusts the entry angle of the pushed pipe through the anchoring system. S5: The offshore vessel assists in pulling the pipe: the construction vessel carries a directional drilling rig connected to the drill pipe to pull the pipe, and monitors the posture of the pushed pipe in real time; S6: Real-time monitoring and correction: Use the geomagnetic guidance system and underwater sonar for joint monitoring and dynamic adjustment of push and pull parameters.

[0067] Specifically, in step S2, the seven-stage expansion process has a step increment of 100 mm, and the expansion direction is from offshore to land. After each expansion stage, environmentally friendly mud is injected. The mud parameters are: Marsh funnel viscosity 90-120s, plastic viscosity 30-65mPa·s, and pH 9-11.

[0068] In step S4, the pipe pusher adopts a 500t-class hydraulic drive device, the clamping force of the pipe gripper is 85%-90% of the upper limit of the pipe compressive strength, a roller frame is provided under the pipe, and the friction coefficient is ≤0.15.

[0069] In step S5, the construction vessel is equipped with a dynamic positioning system (DP), the mooring spacing is 3-5 times the vessel length, and the deviation between the pulling angle and the pipeline axis is ≤2°.

[0070] In step S6, a distributed optical fiber sensor is used to monitor pipeline stress. When the deviation exceeds the designed curvature radius, the deviation is corrected by adjusting the clamping position of the pipe pusher or the tension of the ship's anchor chain.

[0071] Ultimately, the construction efficiency was increased by 40%, the towing time for a 1,300-meter pipeline was ≤6 days; the towing force was reduced by 30%, the pipeline deformation rate was <0.1%; the mud recycling rate was ≥95%, reducing pollution to the marine environment.

[0072] Specific construction process: 1. Construction preparation; A GD6000-L directional drilling rig was installed on land, and a construction vessel (64.2m long and 12m wide) was deployed offshore. The pipeline adopts Q355B steel pipe (Φ720×20mm), single length is 12m, and two-to-one welding is carried out on site; A circulating mud system is constructed, and the mud sampling device is installed in the circulating mud system.

[0073] 2. Pilot hole construction: Using the KY-100 geomagnetic guidance system, the drill bit positioning error is ≤0.2m; When crossing the coral belt, the drilling speed dropped to 5m / h and the mud flow rate increased by 20%.

[0074] 3. Hole expansion and hole cleaning: Seven-stage hole expansion parameters: 400mm→500mm→600mm→700mm→800mm→900mm→1000mm; The residual rock cuttings content in the hole after cleaning is ≤3%.

[0075] 4. Pipeline pullback: The land pipe thruster (500t) is pushed forward in sections, with each section pushing force ≤875kN; The ship at sea maintains its position through the DP system, and the deviation between the pulling speed and the land propulsion speed is ≤0.1m / min.

[0076] 5. Quality Inspection: The qualified rate of weld UT test is 100%, and the spark detection voltage of anti-corrosion layer is ≥15kV; The final buried depth error of the pipeline is ≤±0.5m, and the curvature radius is ≥1500D (D is the pipeline diameter).

[0077] Dynamic correction operation: When the optical fiber sensor detects that the local stress exceeds the limit, it performs the following operations: 1. Reduce the pipe thruster speed to 50%; 2. Adjust the anchor chain tension to restore the pipeline axis angle to within the design range; 3. Inject additional bentonite slurry to lubricate the hole walls.

[0078] The specific structure of the mud sampling device refers to the above embodiments. Since the method of sea-land crossing drilling construction adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0079] 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 by using the contents of the present invention description and drawings under the concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A mud sampling device, characterized in that: include: An installation box body, wherein a connecting pipe is provided on the top of the installation box body; The connecting mechanism includes a limit plate, a blocking block, an elastic contraction member and a synchronization plate. The limit plate is fixedly arranged in the installation box body, an adjustment sliding hole is opened in the limit plate, the blocking block is slidably installed between the installation box body and the limit plate, and the two ends of the elastic contraction member are respectively fixedly connected to the installation box body and the blocking block; the top of the synchronization plate passes through the adjustment sliding hole and is fixedly connected to the bottom of the limit plate; A movable box is inserted into and slid into the installation box body, a sampling tube is installed in the movable box, and a first telescopic member is used to drive the movable box to move toward the synchronization plate; a delivery pipe, wherein the delivery pipe is staggered with the first telescopic member, and the delivery pipe sequentially passes through the bottom end of the installation box body, the limiting plate, and the top end of the installation box body; Wherein, a sampling port is provided on the delivery pipe, and a diversion inclined hole is provided on the blocking block; In the initial state, the blocking block blocks the sampling port, the diversion inclined hole connects the connecting pipe and the interior of the installation box, and the pipe mouth of the sampling pipe, the output port of the diversion inclined hole and the synchronization plate are arranged in sequence.

2. The mud sampling device according to claim 1, characterized in that: An anti-stick coating is sprayed inside the blocking block.

3. The mud sampling device according to claim 1, characterized in that: The first telescopic member is arranged horizontally and fixedly connects the installation box body and the movable box.

4. The mud sampling device according to claim 1, characterized in that: A central control screen is provided on the installation box body.

5. The mud sampling device according to claim 4, characterized in that: The sampling tube is provided with a label, and the central control screen is integrated with a visual recognition device; The mud sampling device further includes a supporting mechanism, which is installed in the movable box; the supporting mechanism includes a second telescopic member and a bracket, the second telescopic member is used to lift the bracket, and the bracket is 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 end of the pressure sensor is connected to the central control screen signal.

7. The mud sampling device according to claim 6, characterized in that: The central control screen is connected to the first telescopic component by 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 limited slide rail structure is provided at the connection between the movable box and the installation box body.

9. The mud sampling device according to claim 8, characterized in that: The movable box is provided with a limited sliding hole, the bracket is in a circular ring structure, the bracket is slidably installed in the movable box, the top end of the sampling tube is provided with a conical nozzle structure, and the bracket is assembled below the conical nozzle structure; The second telescopic member is an L-shaped rod, the top of the second telescopic member is fixedly connected to the bottom of the bracket, the bottom of the second telescopic member passes through the limiting sliding hole and is slidably connected to the moving box, the first telescopic member is tilted, and the two ends of the first telescopic member are respectively hinged to the installation box body and the bottom of the second telescopic member.

10. A method for sea-land crossing drilling construction, characterized in that: The following steps are involved: S1: Pilot hole drilling on land: A geomagnetic guidance system is used to control the drill bit trajectory to form an initial pilot hole of a preset diameter; S2: Multi-stage hole enlarging and hole cleaning: The diameter of the initial pilot hole is enlarged to a preset enlarged diameter through a seven-stage hole enlarging process, and the hole is cleaned using a hole reamer and circulating mud. During the circulating mud recycling treatment, the circulating mud is regularly sampled and analyzed using a mud sampling device as described in any one of claims 1 to 9; S3: Pretreatment before pipeline pushing: Use carbon dioxide shielded welding full penetration welding process, and after the weld passes the UT test, apply anti-corrosion coating on the inner and outer walls of the pushing pipeline; S4: Pipeline pushing: The land-based pipe pusher and the offshore vessel apply force synchronously. The land-based pipe pusher clamps the pushed pipe through the pipe gripper and pushes it forward in sections. The offshore vessel adjusts the entry angle of the pushed pipe through the anchoring system. S5: The offshore vessel assists in pulling the pipe: the construction vessel carries a directional drilling rig connected to the drill pipe to pull the pipe, and monitors the posture of the pushed pipe in real time; S6: Real-time monitoring and correction: Use the geomagnetic guidance system and underwater sonar for joint monitoring and dynamic adjustment of push and pull parameters.

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