Composite remote laser fire cutting device

Abstract

A composite remote laser fire cutting device, comprising a container truck platform (10), a high-temperature-resistant composite functional flexible pipe (20), and a high-temperature-resistant cutting device (30), wherein the container truck platform (10) is connected to the high-temperature-resistant cutting device (30) by means of the high-temperature-resistant composite functional flexible pipe (20); the container truck platform (10) comprises a control system and a plurality of laser emitting modules, wherein the control system is connected to the laser emitting modules and the high-temperature-resistant cutting device (30); the high-temperature-resistant cutting device (30) comprises a laser beam combination and control system (31), the laser emitting modules emit laser which is transmitted to the laser beam combination and control system (31) via the high-temperature-resistant composite functional flexible pipe (20), and the high-temperature-resistant cutting device (30) is used for emitting laser to a wellhead assembly (70). The cutting device can realize laser cutting on a wellhead assembly of an out-of-control oil and gas well from a remote position, thereby significantly improving the operation efficiency, and ensuring the safety of operators and tools.

Description

A composite laser remote firing cutting device

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202311220335.X filed on September 20, 2023, and cites the contents disclosed in the above patent application as part of this application. Technical Field

[0003] The present application belongs to the field of well control emergency rescue technology, and specifically relates to a composite laser remote fire cutting device. Background Art

[0004] In the harsh environment of emergency rescue for uncontrolled blowouts, equipment and personnel must work near the wellhead during the demolition of old wellheads. Faced with high temperatures, high noise levels, and toxic gases, the wellhead flame temperature can reach 1500°C, making personnel working near the wellhead extremely risky. Currently used metal materials have limited fire and temperature resistance and are prone to strength failure. Existing protective measures provide limited protection for hydraulic and electrical components, seriously affecting the service life of equipment. Currently, wellhead demolition mainly relies on a combination of hydraulic sandblasting and flame cutting, which has the following main disadvantages:

[0005] (1) High operating risk for personnel. Equipment and operators need to work near the wellhead, facing harsh environments such as high temperature, high noise, and toxic gases, which poses a high operating risk to personnel.

[0006] (2) The thermal protection performance of the device is insufficient. The wellhead fire is large and the heat radiation is strong. The equipment protection and shielding, high temperature resistance and impact resistance are weak, which makes it easy to fail.

[0007] Summary of the Invention

[0008] To address the technical problems in the prior art, this application provides a composite laser remote ignition cutting device. This cutting device can remotely laser cut the wellhead assembly of an uncontrolled oil and gas well, significantly improving operational efficiency and ensuring the safety of operators and equipment.

[0009] This application includes the following technical solutions:

[0010] The present application provides a composite laser remote hot cutting device, comprising a container truck platform, a high-temperature resistant composite functional flexible pipe, and a high-temperature resistant cutting device; the container truck platform is connected to the high-temperature resistant cutting device via the high-temperature resistant composite functional flexible pipe;

[0011] The container truck platform includes a control system and multiple laser emission modules. The control system connects the laser emission modules and the high-temperature resistant cutting device.

[0012] The high-temperature resistant cutting device includes a laser beam combiner and control system. The laser emission module transmits the laser to the laser beam combiner and control system through a high-temperature composite functional flexible pipeline. The high-temperature resistant cutting device is used to emit laser to the wellhead device.

[0013] Furthermore, the high-temperature resistant cutting device also includes a flame-retardant and heat-insulating shell, a launching system and a laser barrel. The flame-retardant and heat-insulating shell is provided with a laser beam combining and control system and a launching system. One end of the laser barrel is provided inside the flame-retardant and heat-insulating shell, and the other end is provided outside the flame-retardant and heat-insulating shell.

[0014] The launching system launches the laser beam combined by the laser beam combining and control system into the laser gun tube, and the laser gun tube ejects the combined laser beam toward the wellhead.

[0015] Furthermore, the high-temperature resistant cutting device also includes a high-pressure control system and a high-pressure air pipe. The high-pressure control system and the high-pressure air pipe are both arranged in a flame-retardant and heat-insulating shell. The high-pressure control system is connected to the high-pressure air pipe, and the high-pressure air pipe is connected to the laser gun barrel.

[0016] Furthermore, the high temperature resistant cutting device also includes an optical monitoring system, which is arranged in the flame retardant and heat-insulating shell. The optical monitoring system is used to monitor the laser power and feed back the monitored laser power to the container truck platform.

[0017] Furthermore, the high temperature resistant cutting device also includes a top spray system, which is arranged on the outer surface of the flame retardant and heat insulating shell.

[0018] Furthermore, the top spray system includes multiple groups of spray nozzles.

[0019] Furthermore, the flame retardant heat insulating shell includes a flame retardant heat insulating inner shell and a flame retardant heat insulating outer shell. The flame retardant heat insulating inner shell is arranged in the flame retardant heat insulating outer shell, and a temperature control flow channel is formed between the flame retardant heat insulating inner shell and the flame retardant heat insulating outer shell.

[0020] Furthermore, the cutting device also includes a track, and the high-temperature resistant cutting device is movably arranged on the track.

[0021] Furthermore, the track includes a straight track and a curved track, the straight track is connected to the middle of the curved track, and the straight track is arranged opposite to the wellhead device.

[0022] Furthermore, the bottom of the high-temperature resistant cutting device is connected to a swivel device, the swivel device is connected to a power chassis, and a high-temperature resistant crawler track is provided on the power chassis.

[0023] By adopting the above technical solution, this application has the following advantages:

[0024] 1. The cutting device of the present application can perform long-distance laser cutting of oil and gas wellhead devices, significantly improving operation efficiency and ensuring the safety of operators and equipment.

[0025] 2. This application utilizes multiple laser emission modules to emit multiple low-power lasers, which are then combined using a laser beam combiner and control system. Industrial high-power lasers have a fiber transmission distance of only 10 to 20 meters, which is insufficient for long-distance transmission. However, a low-power laser (3 kW) can be transmitted over 200 meters and then combined to achieve long-distance, high-power transmission, meeting both long-distance control and cutting power requirements.

[0026] 3. This application utilizes jet drainage to form a high-speed positive pressure airflow, effectively removing fire, smoke, water mist, particles, vortex airflow, pipe wall fluid, etc. around the wellhead, providing an efficient transmission channel for laser transmission and improving cutting efficiency.

[0027] 4. The high-temperature resistant cutting device of the present application adopts multiple thermal protection technologies, which can effectively extend the working life of various machines at high temperatures.

[0028] 5. Due to the provision of an annular track, the present application can adopt a mobile annular cutting process, which can reduce the interference of the airflow jet in the well on the laser during straight cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application 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 some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] FIG1 is a schematic structural diagram of a composite laser remote hot cutting device according to an embodiment of the present application;

[0031] FIG2 is a schematic diagram of the arrangement of the guide rails in an embodiment of the present application;

[0032] FIG3 is a schematic diagram of the structure of a laser gun barrel in an embodiment of the present application;

[0033] In the figure: 10-container truck platform, 20-high-temperature resistant composite functional flexible pipe, 30-high-temperature resistant cutting device, 31-laser beam combining and control system, 32-flame retardant and heat-insulating shell, 321-flame retardant and heat-insulating inner shell, 322-flame retardant and heat-insulating outer shell, 33-launching system, 34-laser barrel, 341-thermal protection shell, 342-optical lens group, 343-optical window, 35-high-pressure control system, 36-high-pressure air pipe, 361-high-pressure airflow, 37-optical monitoring system, 38-top spraying system, 40-track, 41-straight track, 42-curved track, 50-power chassis, 60-high-temperature resistant crawler, 70-wellhead device. DETAILED DESCRIPTION

[0034] The following description provides many different embodiments or examples for implementing different features of the present application. The components and arrangements described in the following specific examples are only used to simplify the present application and are only examples, not to limit the present application.

[0035] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] This embodiment provides a composite laser remote hot cutting device, as shown in FIG1 , comprising a container truck platform 10, a high-temperature resistant composite functional flexible pipe 20, and a high-temperature resistant cutting device 30; the container truck platform 10 is connected to the high-temperature resistant cutting device 30 via the high-temperature resistant composite functional flexible pipe 20;

[0037] The container truck platform 10 includes a control system and a plurality of laser emission modules, wherein the control system connects the laser emission modules and the high temperature resistant cutting device 30;

[0038] The high temperature resistant cutting device 30 includes a laser beam combining and control system 31 . The laser emission module transmits the laser to the laser beam combining and control system 31 through a high temperature composite functional flexible pipeline. The high temperature resistant cutting device 30 is used to emit laser to the wellhead device 70 .

[0039] When in use, the high-temperature resistant cutting device 30 needs to be set 2 meters away from the wellhead device 70, and the container truck platform 10 can be set 200 meters away from the wellhead device 70. Manual cutting control is performed on the container truck platform 10 to achieve long-distance cutting and ensure the safety of personnel.

[0040] In some embodiments, the high-temperature resistant cutting device 30 further includes a flame-retardant and heat-insulating shell 32, a launch system 33, and a laser barrel 34. The flame-retardant and heat-insulating shell 32 is provided with a laser beam combining and control system 31 and a launch system 33. One end of the laser barrel 34 is provided inside the flame-retardant and heat-insulating shell 32, and the other end is provided outside the flame-retardant and heat-insulating shell 32.

[0041] The launching system 33 launches the laser beam combined by the laser beam combining and control system 31 to the laser gun tube 34, and the laser gun tube 34 sprays the combined laser beam toward the wellhead.

[0042] Among them, the structure of the laser barrel 34 is shown in Figure 3. The laser barrel 34 includes a heat protection shell 341, an optical lens group 342, an optical window 343 and a high-pressure gas flow channel. The optical lens group 342, the optical window 343 and the high-pressure gas flow channel are arranged in the heat protection shell 341. The laser is emitted through the optical lens group 342 and the optical window 343. The high-pressure gas flow channel is arranged around the optical lens group 342 and the optical window 343.

[0043] In some embodiments, the high-temperature resistant cutting device 30 also includes a high-pressure control system 35 and a high-pressure air pipe 36. The high-pressure control system 35 and the high-pressure air pipe 36 are both arranged in the flame-retardant and heat-insulating shell 32. The high-pressure control system 35 is connected to the high-pressure air pipe 36, and the high-pressure air pipe 36 is connected to the laser gun barrel 34.

[0044] In some embodiments, the high-temperature-resistant cutting device 30 further includes an optical monitoring system 37, which is disposed within the flame-retardant, heat-insulating housing 32. The optical monitoring system 37 is used to monitor laser power and feed the monitored laser power back to the container truck platform 10. After long-distance transmission, laser power will experience some power loss. Furthermore, since the laser beam is combined after passing through the laser beam combiner and control system 31, further monitoring of the combined laser power is required. The laser power monitored by the optical monitoring system 37 is fed back to the control system of the container truck platform 10, which adjusts the power of the laser emission module accordingly.

[0045] In some embodiments, the high temperature resistant cutting device 30 further includes a top spray system 38 , which is disposed on the outer surface of the flame retardant and heat insulating shell 32 .

[0046] In some embodiments, the overhead spray system 38 includes multiple groups of spray heads.

[0047] In some embodiments, the flame-retardant and heat-insulating housing 32 includes a flame-retardant and heat-insulating inner shell 321 and a flame-retardant and heat-insulating outer shell 322. The flame-retardant and heat-insulating inner shell 321 is disposed within the flame-retardant and heat-insulating outer shell 322, and a temperature-controlled flow channel is formed between the flame-retardant and heat-insulating inner shell 321 and the flame-retardant and heat-insulating outer shell 322. During use, a heat-conducting liquid such as water is placed in the temperature-controlled flow channel.

[0048] In some embodiments, as shown in FIG. 1 , the cutting device further includes a track 40 , and the high-temperature resistant cutting device 30 is movably disposed on the track 40 .

[0049] The container truck platform 10 can control the high-temperature cutting device 30. The operator can pre-plan the movement trajectory of the high-temperature cutting device 30 within the control system of the container truck platform 10. A signal cable is connected between the high-temperature cutting device 30 and the container truck platform 10 within the high-temperature composite functional flexible conduit 20. The container truck platform 10 can control the movement path of the high-temperature cutting device 30 with a single click by sending electrical signals. In addition to pre-planning the path, the operator can also manually control the high-temperature cutting device 30 from the container truck platform 10.

[0050] In some embodiments, as shown in FIG. 2 , the track 40 includes a straight track 41 and a curved track 42 . The straight track 41 is connected to the middle of the curved track 42 , and the straight track 41 is arranged opposite the wellhead device 70 .

[0051] In some embodiments, a swivel device is connected to the bottom of the high-temperature resistant cutting device 30 , and the swivel device is connected to a power chassis 50 , on which a high-temperature resistant crawler track 60 is provided.

[0052] Working Principle: When cutting is required at the wellhead assembly 70 of an uncontrolled oil or gas well, the container truck platform 10 and high-temperature cutting device 30 are moved to a safe area at the wellsite to complete the connection of the equipment. The container truck platform 10 and the operator are located at a safe distance of 200 meters from the wellhead. Remote operation is performed from the operating platform of the container truck platform 10, and the high-temperature cutting device 30 is intelligently delivered via guide rails to a point 702 meters from the wellhead assembly. High-pressure air pipe 36 is used to inject and drain fluid within the laser barrel 34, creating a high-speed positive pressure airflow. This effectively removes fire, smoke, water mist, particles, vortex airflow, and pipe wall fluids around the wellhead, providing an efficient transmission channel for laser transmission. Optical online monitoring and a 3D contour laser scanning system are integrated into the laser transmission channel to facilitate visualization of the cutting process. The laser emitted by multiple laser emission modules of the container truck platform 10 is transmitted through the high-temperature resistant composite functional flexible pipe 20 and then passes through the laser beam combining and control system 31. The optical fiber sub-aperture beam is used to obtain a high-power processing beam, which is then emitted by the emission system 33 and reaches the wellhead device 70 through the laser high-efficiency transmission channel of the laser barrel 34 to start the cutting operation.

[0053] Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A composite laser remote hot cutting device, characterized in that: It comprises a container truck platform (10), a high temperature resistant composite functional flexible pipe (20) and a high temperature resistant cutting device (30); the container truck platform (10) is connected to the high temperature resistant cutting device (30) via the high temperature resistant composite functional flexible pipe (20); The container truck platform (10) comprises a control system and a plurality of laser emission modules, wherein the control system connects the laser emission modules and the high temperature resistant cutting device (30); The high temperature resistant cutting device (30) comprises a laser beam combining and control system (31), the laser emission module emits laser light which is transmitted to the laser beam combining and control system (31) through the high temperature composite functional flexible pipeline, and the high temperature resistant cutting device (30) is used to emit laser light to a wellhead device (70).

2. A composite laser remote hot cutting device as claimed in claim 1, characterized in that: The high temperature resistant cutting device (30) further comprises a flame retardant heat-insulating shell (32), a launching system (33) and a laser gun barrel (34); the laser beam combining and control system (31) and the launching system (33) are arranged in the flame retardant heat-insulating shell (32); one end of the laser gun barrel (34) is arranged in the flame retardant heat-insulating shell (32), and the other end is arranged outside the flame retardant heat-insulating shell (32); The emission system (33) emits the laser beam combined by the laser beam combining and control system (31) to the laser gun tube (34), and the laser gun tube (34) sprays the combined laser beam toward the wellhead.

3. A composite laser remote firing cutting device as claimed in claim 2, characterized in that: The high temperature resistant cutting device (30) further comprises a high pressure control system (35) and a high pressure air pipe (36), wherein the high pressure control system (35) and the high pressure air pipe (36) are both arranged in the flame retardant heat insulating shell (32), the high pressure control system (35) is connected to the high pressure air pipe (36), and the high pressure air pipe (36) is connected to the laser gun barrel (34).

4. A composite laser remote firing cutting device as claimed in claim 2, characterized in that: The high temperature resistant cutting device (30) further comprises an optical monitoring system (37), wherein the optical monitoring system (37) is arranged in the flame retardant heat insulating shell (32), and the optical monitoring system (37) is used to monitor the laser power and feed back the monitored laser power to the container truck platform (10).

5. A composite laser remote firing cutting device as claimed in claim 2, characterized in that: The high temperature resistant cutting device (30) further comprises a top spray system (38), wherein the top spray system (38) is arranged on the outer surface of the flame retardant heat insulating shell (32).

6. A composite laser remote firing cutting device as claimed in claim 5, characterized in that: The top spray system (38) includes multiple groups of spray nozzles.

7. A composite laser remote firing cutting device as claimed in claim 2, characterized in that: The flame retardant heat-insulating shell (32) comprises a flame retardant heat-insulating inner shell (321) and a flame retardant heat-insulating outer shell (322); the flame retardant heat-insulating inner shell (321) is arranged inside the flame retardant heat-insulating outer shell (322), and a temperature control flow channel is formed between the flame retardant heat-insulating inner shell (321) and the flame retardant heat-insulating outer shell (322).

8. A composite laser remote hot cutting device as claimed in claim 1 or 2, characterized in that: The cutting device further comprises a track (40), and the high temperature resistant cutting device (30) is movably arranged on the track (40).

9. A composite laser remote firing cutting device as claimed in claim 8, characterized in that: The track (40) comprises a straight track (41) and an arc track (42), wherein the straight track (41) is connected to the middle of the arc track (42), and the straight track (41) is arranged opposite to the wellhead device (70).

10. A composite laser remote firing cutting device as claimed in claim 9, characterized in that: The bottom of the high temperature resistant cutting device (30) is connected to a swivel device, the swivel device is connected to a power chassis (50), and a high temperature resistant crawler (60) is arranged on the power chassis (50).

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