Composite system laser remote cutting device with fire

Abstract

The invention belongs to the technical field of well control emergency rescue, and particularly relates to a composite system laser remote on-fire cutting device. Comprising a container truck platform, a high-temperature-resistant composite function flexible pipeline and a high-temperature-resistant cutting device. The container truck platform is connected with the high-temperature-resistant cutting device through a high-temperature-resistant composite function flexible pipeline. The container truck platform comprises a control system and a plurality of laser emitting modules, and the control system is connected with the laser emitting modules and the high-temperature-resistant cutting device; the high-temperature-resistant cutting device comprises a laser beam combining and control system, laser emitted by the laser emitting module is transmitted to the laser beam combining and control system through the high-temperature composite function flexible pipeline, and the high-temperature-resistant cutting device is used for emitting laser to a wellhead device. By means of the cutting device, laser cutting can be conducted on the out-of-control oil and gas well mouth device in a long distance, the working efficiency is remarkably improved, and the safety of operators and tools is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of well control emergency rescue and relief, and in particular relates to a composite laser remote firing cutting device. Background Art

[0002] In the harsh environment of emergency rescue for uncontrolled blowouts, the equipment and personnel need to work near the wellhead during the demolition of the old wellhead. Faced with high temperature, high noise, and toxic gas environment, the flame temperature at the wellhead can reach 1500℃, and the risk of personnel working near the wellhead is extremely high; the metal materials currently used have limited fire and temperature resistance and are prone to strength failure. The existing protective measures have limited protection for hydraulic and electrical components, which seriously affects the service life of the equipment. At present, wellhead demolition mainly relies on a combination of hydraulic sandblasting cutting and flame cutting, which has the following main disadvantages:

[0003] (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 high operating risks to personnel.

[0004] (2) The thermal protection performance of the device is insufficient. The wellhead fire is large, the heat radiation is strong, the equipment protection and shielding, high temperature resistance, and impact resistance are weak, and strength failure is prone to occur. Summary of the invention

[0005] In order to solve the technical problems existing in the prior art, the present invention provides a composite laser remote ignition cutting device. The cutting device of the present invention can realize the laser cutting of the wellhead device of the out-of-control oil and gas well at a long distance, significantly improve the operation efficiency, and ensure the safety of the operators and equipment.

[0006] The present invention includes the following technical solutions:

[0007] The present invention provides a composite laser remote hot cutting device, comprising a container truck platform, a high temperature resistant composite functional flexible pipeline and a high temperature resistant cutting device; the container truck platform is connected to the high temperature resistant cutting device via a high temperature resistant composite functional flexible pipeline;

[0008] The container truck platform 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;

[0009] The high temperature resistant cutting device comprises a laser beam combiner and control system. The laser emission module emits laser which is transmitted to the laser beam combiner and control system through the high temperature composite functional flexible pipeline. The high temperature resistant cutting device is used to emit laser to the wellhead device.

[0010] Furthermore, the high temperature resistant cutting device further comprises a flame retardant heat-insulating shell, a launching system and a laser gun barrel, wherein the laser beam combining and control system and the launching system are arranged in the flame retardant heat-insulating shell, and one end of the laser gun barrel is arranged in the flame retardant heat-insulating shell, and the other end is arranged outside the flame retardant heat-insulating shell;

[0011] The launching system launches the laser beam after the laser beam is combined by the laser beam combining and control system to the laser gun tube, and the laser gun tube sprays the laser beam after the laser beam is combined toward the wellhead.

[0012] Furthermore, the high temperature resistant cutting device also includes a high pressure control system and a high pressure air pipe, both of which are arranged in the 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.

[0013] Furthermore, the high temperature resistant cutting device also includes an optical monitoring system, which is arranged in the flame retardant and heat insulating shell, and the optical monitoring system is used to monitor the laser power and feed back the monitored laser power to the container truck platform.

[0014] Furthermore, the high temperature resistant cutting device also includes a top spray system, and the top spray system is arranged on the outer surface of the flame retardant and heat insulating shell.

[0015] Furthermore, the top spray system includes multiple groups of spray nozzles.

[0016] Furthermore, the flame retardant heat insulating shell comprises 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.

[0017] Furthermore, the cutting device also includes a track, and the high temperature resistant cutting device is movably arranged on the track.

[0018] 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.

[0019] Furthermore, a swivel device is connected to the bottom of the high temperature resistant cutting device, the swivel device is connected to a power chassis, and a high temperature resistant crawler track is provided on the power chassis.

[0020] By adopting the above technical solution, the present invention has the following advantages:

[0021] 1. The cutting device of the present invention can perform long-distance laser cutting of oil and gas wellhead devices, significantly improving operating efficiency and ensuring the safety of operators and equipment.

[0022] 2. The multiple laser emission modules of the present invention are used to emit multiple low-power lasers, and these multiple lasers are combined through laser beam combining and control systems. The optical fiber transmission distance of industrial high-power lasers is only 10 to 20 meters, which cannot meet the long-distance transmission requirements. Low power (3kw) can be transmitted over 200 meters and then combined to achieve long-distance high-power transmission; it not only meets the long-distance control but also meets the cutting power requirements.

[0023] 3. The present invention utilizes jet drainage to form a high-speed positive pressure airflow, which effectively removes fire, smoke, water mist, particles, vortex airflow, pipe wall fluid, etc. around the wellhead, provides an efficient transmission channel for laser transmission, and improves cutting efficiency.

[0024] 4. The high temperature resistant cutting device of the present invention adopts multiple heat protection technologies, which can effectively extend the working life of various machines at high temperatures.

[0025] 5. Due to the annular track provided in the present invention, a mobile annular cutting process can be adopted, which can reduce the interference of the airflow jet in the well on the laser during straight cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic structural diagram of a composite laser remote-fire cutting device according to an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the arrangement of the guide rails in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of a laser gun barrel in an embodiment of the present invention;

[0030] In the figure: 10-container truck platform, 20-high temperature resistant composite functional flexible pipeline, 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 air flow, 37-optical monitoring system, 38-top spray system, 40-track, 41-straight track, 42-arc track, 50-power chassis, 60-high temperature resistant crawler, 70-wellhead device. DETAILED DESCRIPTION

[0031] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] This embodiment provides a composite laser remote firing cutting device, such as Figure 1 As shown, it includes 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 through the high temperature resistant composite functional flexible pipe 20;

[0034] 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;

[0035] The high temperature resistant cutting device 30 includes a laser beam combining and control system 31 . The laser emission module emits laser which is transmitted to the laser beam combining and control system 31 through the high temperature composite functional flexible pipeline. The high temperature resistant cutting device 30 is used to emit laser to the wellhead device 70 .

[0036] 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.

[0037] In some embodiments, the high temperature resistant cutting device 30 further includes a flame retardant heat-insulating shell 32, a launch system 33 and a laser gun barrel 34, wherein the laser beam combining and control system 31 and the launch system 33 are arranged in the flame retardant heat-insulating shell 32, and 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;

[0038] 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.

[0039] Among them, the structure of the laser gun tube 34 is as follows Figure 3 As shown, 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, and 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.

[0040] 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, both of which are arranged in the flame retardant and heat insulating shell 32, and 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.

[0041] In some embodiments, the high temperature resistant cutting device 30 further includes an optical monitoring system 37, which is disposed in the flame retardant heat insulating shell 32, and is used to monitor the laser power and feed back the monitored laser power to the container truck platform 10. After the laser is transmitted over a long distance, there will be a certain loss of power. At the same time, since the laser is beam combined in the laser beam combining and control system 31, the laser power after beam combining needs further monitoring. The optical monitoring system 37 monitors the laser power and feeds it back to the control system of the container truck platform 10, based on which the power of the laser emission module is adjusted.

[0042] In some embodiments, the high temperature resistant cutting device 30 further includes a top spray system 38 , and the top spray system 38 is disposed on the outer surface of the flame retardant and heat insulating shell 32 .

[0043] In some embodiments, the top spray system 38 includes multiple groups of spray nozzles.

[0044] In some embodiments, the flame retardant heat-insulating shell 32 includes a flame retardant heat-insulating inner shell 321 and a flame retardant heat-insulating outer shell 322, wherein the flame retardant heat-insulating inner shell 321 is disposed inside the flame retardant heat-insulating outer shell 322, and a temperature control channel is formed between the flame retardant heat-insulating inner shell 321 and the flame retardant heat-insulating outer shell 322. When in use, a heat-conducting liquid such as water is disposed in the temperature control channel.

[0045] In some embodiments, Figure 1 As shown, the cutting device further comprises a track 40 , and the high temperature resistant cutting device 30 is movably arranged on the track 40 .

[0046] The container truck platform 10 can control the high temperature resistant cutting device 30. The operator can plan the motion trajectory of the high temperature resistant cutting device 30 in advance in the control system of the container truck platform 10. A signal cable is connected between the high temperature resistant cutting device 30 and the container truck platform 10 in the high temperature resistant composite functional flexible pipe 20. The container truck platform 10 can control the motion path of the high temperature resistant cutting device 30 with one key by sending an electrical signal. In addition to planning the path in advance, the operator can also manually control the high temperature resistant cutting device 30 on the container truck platform 10.

[0047] In some embodiments, Figure 2 As shown, 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 to the wellhead device 70 .

[0048] In some embodiments, a rotating device is connected to the bottom of the high temperature resistant cutting device 30 , and the rotating device is connected to a power chassis 50 , and a high temperature resistant crawler 60 is provided on the power chassis 50 .

[0049] Working principle: When it is necessary to cut the wellhead device 70 of an out-of-control oil and gas well, the container truck platform 10 and the high-temperature resistant cutting device 30 are moved to the safe area of ​​the well site to complete the connection of the devices and equipment. The container truck platform 10 and the operator are located at a safe distance of 200 meters from the wellhead. Remote operation is implemented on the operating platform of the container truck platform 10 to intelligently deliver the high-temperature resistant cutting device 30 to 702 meters from the wellhead device through the guide rail. The high-pressure air pipe 36 is used to spray and drain in the laser gun barrel 34 to form a high-speed positive pressure airflow, which effectively removes fire, smoke, water mist, particles, vortex airflow, pipe wall fluid, etc. around the wellhead, and provides an efficient transmission channel for laser transmission. Optical online monitoring and three-dimensional contour laser scanning systems are integrated in the laser transmission channel to solve the problem of 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 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.

[0050] Although the present invention 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 substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

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).

Images