Combustible ice mining device based on coiled tubing

Abstract

The utility model discloses a combustible ice exploiting device based on a coiled tubing, which comprises a coiled tubing assembly and a combustible ice exploiting assembly, the combustible ice exploiting assembly is arranged at the lower end of the coiled tubing assembly, and the combustible ice exploiting assembly can move to an underground combustible ice exploiting well section along with the movement of the coiled tubing assembly. A mining monitoring assembly, a hydraulic control pipeline and a power supply control cable are arranged on the outer side wall of the coiled tubing assembly; according to the continuous oil pipe, the function of rapidly and stably exploiting combustible ice is achieved, the exploiting time and the exploiting speed can be remotely and accurately controlled on the ground in the whole exploiting process, and the function of measuring a DAS signal, a DTS signal and a DPS signal on the inner side and the outer side of the continuous oil pipe body in real time in the exploiting process of the combustible ice is achieved; the operation safety of the device in the whole combustible ice exploiting process is guaranteed, the exploiting accuracy and exploiting efficiency of the combustible ice are improved, and the device is simple in structure, high in practicability and suitable for being widely popularized and used.

Description

Technical Field

[0001] The utility model belongs to the technical field of combustible ice exploitation, in particular to a combustible ice exploitation device based on a continuous oil pipe. Background Art

[0002] Methane clathrate, also known as methane hydrate, methane ice, natural gas hydrate or combustible ice, is a solid form of water containing a large amount of methane in a lattice (hydrate). Initially, people thought that it could only appear in low-temperature areas outside the solar system where ice often appears, but later it was discovered that combustible ice exists under the sediments of many ocean floors on the earth and even on the earth's land, and its reserves are relatively abundant. Methane clathrate is highly anticipated as a new-age alternative energy source to oil and natural gas.

[0003] Methane hydrate resources are abundant and widely distributed in the world's oceans. The methane content is 60 times that of natural gas resources, and its resource volume is estimated to be equivalent to twice the total amount of carbon proven in traditional fossil fuels in the world. At the same time, the current development of methane hydrate mining technology faces multiple challenges. (1) The mining environment of methane hydrate is extremely harsh, because it is mainly distributed in the cold environment of the deep seabed and high latitudes, and is usually buried in icy sediments. Mining in this environment requires overcoming extreme conditions such as high pressure and low temperature. At the same time, the complexity of the stratification of seabed sediments also increases the difficulty of mining; (2) There are safety risks in the mining and storage of methane hydrate. Since methane hydrate is a mixture of natural gas and ice, when the ice layer is broken, the natural gas in it will be released rapidly, which may cause a sudden increase in pressure and cause fire or explosion; (3) The mining of methane hydrate also involves environmental protection issues. The areas where methane hydrate is located are usually ecologically sensitive marine ecosystems. The mining process may cause irreversible damage to marine organisms and ecosystems. Another technical challenge is that the mining method of methane hydrate is different from that of traditional energy resources. Traditional oil and natural gas mining usually uses direct extraction from wellbores, while methane hydrate needs to be converted into gaseous natural gas through water injection, heat injection, etc. before transportation, which is difficult to achieve in actual use. For this reason, it is necessary to design a methane hydrate mining device based on continuous oil pipes. Summary of the invention

[0004] In view of the above situation, in order to solve the problems that the mining environment of combustible ice is extremely harsh, there are safety risks in the mining and storage process of combustible ice, and the mining of combustible ice also involves environmental protection, the utility model provides a combustible ice mining device based on a continuous oil pipe, which effectively realizes the function of rapid and stable mining of combustible ice, and can remotely and accurately control the mining time and mining speed on the ground during the entire mining process. It also realizes the function of real-time measurement of DAS signals, DTS signals and DPS signals on the inner and outer sides of the continuous oil pipe body during the combustible ice mining process, which ensures the operating safety of the device during the entire combustible ice mining process, improves the accuracy and efficiency of combustible ice mining, and the device has a simple structure and strong practicality.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combustible ice mining device based on a continuous tubing, comprising a continuous tubing assembly and a combustible ice mining assembly, wherein the combustible ice mining assembly is arranged at the lower end of the continuous tubing assembly, and the combustible ice mining assembly can move to the underground combustible ice mining section along with the movement of the continuous tubing assembly, and an mining monitoring assembly, a hydraulic control pipeline and a power supply control cable are arranged on the outer side wall of the continuous tubing assembly, a spiral heating wire is spirally wound on the outer side wall of the combustible ice mining assembly, and a hydraulic sliding sleeve assembly is also arranged on the outer side wall of the combustible ice mining assembly;

[0006] One end of the hydraulic control pipeline is connected to the hydraulic sleeve assembly, and the other end of the hydraulic control pipeline is connected to an external hydraulic control module after extending out of the ground, one end of the power supply control cable is connected to a spiral heating wire, and the other end of the power supply control cable is connected to an external power supply control module after extending out of the ground;

[0007] The spiral heating wire is used to heat the combustible ice reservoir on the outer wall of the combustible ice mining assembly and gasify the combustible ice. The combustible ice mining assembly is used to carry the spiral heating wire and the hydraulic sleeve assembly and provide a gas channel. The hydraulic sleeve assembly is used to open or close the open end of the gas channel provided inside the combustible ice mining assembly.

[0008] The mining monitoring component is used to monitor and measure the noise data, temperature data, pressure data and strain data inside and outside the continuous tubing assembly in real time during the methane hydrate mining process, and simultaneously monitor the status of the continuous tubing assembly and the methane hydrate mining assembly during the methane hydrate mining operation and the noise, temperature, pressure and strain environmental changes inside and outside the wellbore.

[0009] The aforementioned combustible ice mining device based on continuous oil pipe, the combustible ice mining component includes a combustible ice mining short section, the outer wall of the combustible ice mining short section is provided with a side groove, and the inner wall of the side groove is provided with a gas production channel, and the inner wall of the gas production channel is provided with a sand-proof steel wire mesh, wherein the sand-proof steel wire mesh is used for sand and gravel filtering of the combustible ice gas flowing through the gas production channel.

[0010] The aforementioned combustible ice mining device based on continuous oil pipe, the hydraulic sleeve assembly includes a hydraulic cylinder, the hydraulic cylinder is arranged on the inner wall of the side groove, the inner wall of the hydraulic cylinder is slidably connected to one end of the hydraulic telescopic rod, and the other end of the hydraulic telescopic rod is fixedly connected to a slider, wherein the slider can completely close the open end of the gas production channel.

[0011] The aforementioned combustible ice mining device based on a coiled tubing, wherein the mining monitoring assembly comprises a straight light unit and a straight strain light unit;

[0012] The straight optical unit comprises a straight single-mode optical fiber, a straight multi-mode optical fiber and a straight continuous grating optical fiber, wherein the straight single-mode optical fiber is connected to a signal input end of an external DAS signal input module, the straight multi-mode optical fiber is connected to a signal input end of an external DTS signal input module, and the straight continuous grating optical fiber is connected to a signal input end of an external DPS signal input module, wherein the straight single-mode optical fiber, the straight multi-mode optical fiber and the straight continuous grating optical fiber are all made of high temperature resistant and hydrogen loss resistant optical fiber;

[0013] A straight single-mode strain optical fiber is arranged inside the straight strain optical unit, and the straight single-mode strain optical fiber is connected to the signal input end of the external DSS signal input module, wherein the straight single-mode strain optical fiber is made by extruding a high-temperature resistant and high-strength flexible composite material on the outer wall of the straight single-mode optical fiber and increasing the diameter of the straight single-mode optical fiber to 1mm to 2mm, and then tightly wrapping it inside a stainless steel tube with an inner diameter of 1mm to 2mm, and the straight single-mode strain optical fiber is used to sense the stress and strain inside and outside the stainless steel tube.

[0014] The aforementioned combustible ice mining device based on a coiled tubing, wherein the coiled tubing assembly comprises a coiled tubing body, and the outer side wall of the coiled tubing body is evenly provided with a first clamping groove, a second clamping groove and a third clamping groove;

[0015] The number of the first card slots is two, and the inner side walls of the two first card slots are respectively wedged with the outer side walls of the straight light unit and the straight strain light unit, the number of the second card slots is at least four, and the inner side walls of at least four second card slots are wedged with the outer side wall of the power supply control cable, and the number of the third card slots is two, and the inner side walls of the two third card slots are wedged with the outer side wall of the hydraulic control pipeline.

[0016] In the aforementioned combustible ice mining device based on a continuous oil pipe, the straight light unit, the straight strain light unit, the hydraulic control pipeline and the power supply control cable are connected to the continuous oil pipe body by welding.

[0017] The aforementioned combustible ice mining device based on a continuous oil pipe, the continuous oil pipe assembly also includes a flexible composite layer, the flexible composite layer is coated on the outer side wall of the continuous oil pipe body, and the outer side wall of the flexible composite layer is sleeved with a stainless steel protective sleeve.

[0018] In the aforementioned combustible ice mining device based on continuous oil pipe, the number of the side grooves, gas production channels and hydraulic sleeve assemblies is multiple, and the multiple gas production channels are linearly and evenly distributed on the outer side wall of the combustible ice mining short section.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] (1) First, connect the coiled tubing assembly with the mining monitoring assembly and the combustible ice mining assembly, and then push the combustible ice mining assembly to the underground combustible ice mining section through the coiled tubing assembly. Then, the spiral heating wire wrapped around the outer wall of the combustible ice mining short section is powered by the external power supply control module through the power supply control cable, so as to heat the combustible ice reservoir, thereby increasing the temperature of the combustible ice reservoir and achieving rapid gasification of the combustible ice. Subsequently, the hydraulic sleeve assembly is controlled through the hydraulic control pipeline by the external hydraulic control module, and the hydraulic cylinder drives the hydraulic telescopic rod to slide and retract from It can drive the slider to slide inside the side groove, and then open the open end of the gas production channel, so that the natural gas after the methane hydrate is gasified can pass through the cementing cement and enter the gas production channel, and the sand-proof wire mesh can filter the natural gas flowing through the gas production channel for sand and gravel. At the same time, the continuous oil pipe body becomes the gas production column for the exploitation of methane hydrate, which effectively realizes the function of the device to quickly and stably exploit methane hydrate, and the mining time and speed can be remotely and accurately controlled on the ground during the entire mining process, thereby improving the mining efficiency of large-scale production of methane hydrate resources. The device has a simple structure and is highly practical.

[0021] (2) In the process of combustible ice mining, the utility model can monitor the DSS signal of the continuous tubing body and the outside of the combustible ice mining component in real time through the straight single-mode strain optical fiber arranged on the outer wall of the continuous tubing body, and then can monitor the DAS signal, DTS signal and DPS signal on both sides of the inside and outside of the continuous tubing body in real time through the straight single-mode optical fiber, straight multi-mode optical fiber and straight continuous grating optical fiber arranged on the outer wall of the continuous tubing body respectively. Then, the straight optical unit and the straight strain optical unit can monitor the fluid noise, temperature, pressure and stress inside and outside the underground well section in real time during the process of combustible ice mining. and strain, thereby real-time monitoring of the downhole continuous tubing body, methane hydrate mining components, stress and methane hydrate gas pressure and flow, and thus maintaining the safe operation of the entire device. The device effectively realizes the function of real-time measurement of DAS signals, DTS signals and DPS signals on both sides of the continuous tubing body inside and outside during the methane hydrate mining process, and can also monitor the fluid noise, temperature, pressure, stress and strain inside and outside the underground well section in real time during the methane hydrate mining process, which not only ensures the operational safety of the device during the entire methane hydrate mining process, but also improves the accuracy and efficiency of methane hydrate mining. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the coiled tubing assembly of the utility model;

[0025] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 4 This is a schematic diagram of the structure of the mining monitoring component of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the combustible ice mining component of the utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the hydraulic sleeve assembly of the utility model;

[0029] In the figure: 1. Continuous tubing assembly; 101. Continuous tubing body; 102. First slot; 103. Second slot; 104. Third slot; 105. Flexible composite layer; 106. Stainless steel protective cover; 2. Mining monitoring assembly; 201. Straight light unit; 202. Straight strain light unit; 3. Power supply control cable; 4. Hydraulic control pipeline; 5. Combustible ice mining assembly; 501. Combustible ice mining short section; 502. Side groove; 503. Gas production channel; 504. Sand-proof steel wire mesh; 6. Spiral heating wire; 7. Hydraulic sleeve assembly; 701. Hydraulic cylinder; 702. Hydraulic telescopic rod; 703. Sliding block. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example

[0031] Depend on Figures 1 to 6The utility model provides a combustible ice mining device based on a continuous tubing, comprising a continuous tubing assembly 1 and a combustible ice mining assembly 5, wherein the combustible ice mining assembly 5 is arranged at the lower end of the continuous tubing assembly 1, and the combustible ice mining assembly 5 can move to the underground combustible ice mining section with the movement of the continuous tubing assembly 1, and the outer wall of the continuous tubing assembly 1 is provided with a mining monitoring assembly 2, a hydraulic control pipeline 4 and a power supply control cable 3, the outer wall of the combustible ice mining assembly 5 is spirally wound with a spiral heating wire 6, and the outer wall of the combustible ice mining assembly 5 is also provided with a hydraulic sleeve assembly 7; one end of the hydraulic control pipeline 4 is connected to the hydraulic sleeve assembly 7, and the other end of the hydraulic control pipeline 4 is connected to an external hydraulic control module after extending out of the ground, one end of the power supply control cable 3 is connected to the spiral heating wire 6, and the other end of the power supply control cable 3 is connected to the external power supply control module after extending out of the ground; the spiral heating wire 6 is used to heat the combustible ice reservoir on the outer wall of the combustible ice mining assembly 5 and make it Combustible ice gasification, the combustible ice mining component 5 is used to carry the spiral heating wire 6 and the hydraulic sleeve component 7 and provide a gas channel, and the hydraulic sleeve component 7 is used to open or close the open end of the gas channel provided inside the combustible ice mining component 5; the mining monitoring component 2 is used to monitor and measure the noise data, temperature data, pressure data and strain data inside and outside the continuous tubing component 1 in real time during the combustible ice mining process, and simultaneously monitor the status of the continuous tubing component 1 and the combustible ice mining component 5 in the combustible ice mining operation and the noise, temperature, pressure and strain environment changes inside and outside the wellbore. The utility model realizes the function of rapid and stable mining of combustible ice, and can remotely and accurately control the mining time and mining speed on the ground during the entire mining process. It also realizes the function of real-time measurement of the DAS signal, DTS signal and DPS signal on both sides of the continuous tubing body 101 in the combustible ice mining process, which ensures the operation safety of the device during the entire combustible ice mining process and improves the accuracy and efficiency of combustible ice mining.

[0032] Specifically, the methane hydrate mining component 5 includes a methane hydrate mining short section 501, the outer wall of the methane hydrate mining short section 501 is provided with a side groove 502, and the inner wall of the side groove 502 is provided with a gas production channel 503, and the inner wall of the gas production channel 503 is provided with a sand-proof steel wire mesh 504, wherein the sand-proof steel wire mesh 504 is used to perform sand and gravel filtering operations on the methane hydrate gas flowing through the gas production channel 503, and the sand-proof steel wire mesh 504 can be used to perform sand and gravel filtering operations on the natural gas flowing through the gas production channel 503.

[0033] Specifically, the hydraulic sleeve assembly 7 includes a hydraulic cylinder 701, which is arranged on the inner wall of the side groove 502. The inner wall of the hydraulic cylinder 701 is slidably connected to one end of a hydraulic telescopic rod 702, and the other end of the hydraulic telescopic rod 702 is fixedly connected to a slider 703, wherein the slider 703 can completely close the open end of the gas production channel 503. The hydraulic cylinder 701 drives the hydraulic telescopic rod 702 to extend and slide, thereby driving the slider 703 to slide inside the side groove 502, thereby opening the open end of the gas production channel 503.

[0034] Specifically, the mining monitoring component 2 includes a straight optical unit 201 and a straight strain optical unit 202; the straight optical unit 201 includes a straight single-mode optical fiber, a straight multi-mode optical fiber and a straight continuous grating optical fiber, the straight single-mode optical fiber is connected to the signal input end of the external DAS signal input module, the straight multi-mode optical fiber is connected to the signal input end of the external DTS signal input module, and the straight continuous grating optical fiber is connected to the signal input end of the external DPS signal input module, wherein the straight single-mode optical fiber, the straight multi-mode optical fiber and the straight continuous grating optical fiber are all made of high-temperature resistant and hydrogen-damage resistant optical fiber; a straight single-mode strain optical fiber is arranged inside the straight strain optical unit 202, and the straight single-mode strain optical fiber is connected to the signal input end of the external DSS signal input module The ends are connected, wherein the straight single-mode strain optical fiber is made by extruding a high-temperature resistant and high-strength flexible composite material onto the outer wall of the straight single-mode optical fiber and increasing the diameter of the straight single-mode optical fiber to 1mm to 2mm, and then tightly wrapping it inside a stainless steel tube with an inner diameter of 1mm to 2mm, and the straight single-mode strain optical fiber is used to sense the stress and strain inside and outside the stainless steel tube, and the straight single-mode strain optical fiber arranged on the outer wall of the continuous tubing body 101 can monitor the DSS signal on the outside of the continuous tubing body 101 and the combustible ice mining component 5 in real time, and then the straight single-mode optical fiber, straight multi-mode optical fiber and straight continuous grating optical fiber arranged on the outer wall of the continuous tubing body 101 can respectively monitor the DAS signal, DTS signal and DPS signal on both sides inside and outside the continuous tubing body 101 in real time.

[0035] Specifically, the coiled tubing assembly 1 includes a coiled tubing body 101, and the outer wall of the coiled tubing body 101 is evenly provided with a first card slot 102, a second card slot 103 and a third card slot 104; the number of the first card slots 102 is two, and the inner walls of the two first card slots 102 are respectively wedged with the outer walls of the straight light unit 201 and the straight strain light unit 202, the number of the second card slots 103 is at least four, and the inner walls of at least four second card slots 103 are wedged with the outer wall of the power supply control cable 3, the number of the third card slots 104 is two, and the inner walls of the two third card slots 104 are wedged with the outer wall of the hydraulic control pipeline 4, and the spiral heating wire 6 wound around the outer wall of the combustible ice mining short section 501 is powered by the external power supply control module through the power supply control cable 3, so that the combustible ice reservoir can be heated, thereby increasing the temperature of the combustible ice reservoir and realizing rapid gasification of the combustible ice.

[0036] Specifically, the straight light unit 201, the straight strain light unit 202, the hydraulic control pipeline 4 and the power supply control cable 3 are connected to the continuous tubing body 101 by welding. The straight light unit 201 and the straight strain light unit 202 can monitor the fluid noise, temperature, pressure, stress and strain inside and outside the underground well section in real time during the combustible ice mining process, thereby monitoring the downhole continuous tubing body 101, the combustible ice mining component 5, the stress and the combustible ice gas pressure and flow in real time, thereby maintaining the safe operation of the entire device.

[0037] Specifically, the coiled tubing assembly 1 further includes a flexible composite layer 105, which is coated on the outer wall of the coiled tubing body 101, and the outer wall of the flexible composite layer 105 is sleeved with a stainless steel protective sleeve 106, so that the coiled tubing body 101 can be further protected by the flexible composite layer 105 and the stainless steel protective sleeve 106.

[0038] Specifically, the number of the side grooves 502, the gas collection channels 503 and the hydraulic sleeve assembly 7 is multiple, and the multiple gas collection channels 503 are linearly and evenly distributed on the outer wall of the methane hydrate mining short section 501. By having multiple side grooves 502, the gas collection channels 503 and the hydraulic sleeve assembly 7, the methane hydrate gas collection efficiency can be adjusted as needed.

[0039] When in use, first connect the continuous tubing assembly 1 with the mining monitoring assembly 2 and the combustible ice mining assembly 5, and then push the combustible ice mining assembly 5 to the underground combustible ice mining section through the continuous tubing assembly 1, and then power the spiral heating wire 6 wrapped around the outer wall of the combustible ice mining short section 501 through the external power supply control module through the power supply control cable 3, so that the combustible ice reservoir can be heated, thereby increasing the temperature of the combustible ice reservoir and realizing rapid gasification of the combustible ice, and then control the hydraulic sleeve assembly 7 through the hydraulic control pipeline 4 through the external hydraulic control module, and the hydraulic cylinder 701 drives the hydraulic telescopic rod 7 02 telescopic sliding can drive the slider 703 to slide inside the side groove 502, and then open the open end of the gas production channel 503, so that the natural gas after the methane hydrate is gasified can pass through the cementing cement and enter the gas production channel 503, and the sand-proof wire mesh 504 can filter the natural gas flowing through the gas production channel 503 for sand and gravel. At the same time, the continuous oil pipe body 101 becomes the gas production column for the exploitation of methane hydrate, which effectively realizes the function of the device to quickly and stably exploit methane hydrate, and the exploitation time and speed can be remotely and accurately controlled on the ground during the entire exploitation process, which improves the development of large-scale production of methane hydrate resources. Then, during the combustible ice mining process, the straight single-mode strain optical fiber provided on the outer wall of the continuous tubing body 101 can monitor the DSS signal on the outside of the continuous tubing body 101 and the combustible ice mining component 5 in real time. Then, the straight single-mode optical fiber, straight multi-mode optical fiber and straight continuous grating optical fiber provided on the outer wall of the continuous tubing body 101 can respectively monitor the DAS signal, DTS signal and DPS signal on both sides of the inside and outside of the continuous tubing body 101 in real time. Finally, the straight optical unit 201 and the straight strain optical unit 202 can monitor the fluid noise, temperature and pressure inside and outside the underground well section in real time during the combustible ice mining process. Force, stress and strain, thereby real-time monitoring of the downhole continuous tubing body 101, the combustible ice mining component 5, the stress and the combustible ice gas pressure and flow, and then maintaining the safe operation of the entire device, effectively realizing the function of the device to measure the DAS signal, DTS signal and DPS signal on both sides of the continuous tubing body 101 in real time during the combustible ice mining process, and can also monitor the fluid noise, temperature, pressure, stress and strain inside and outside the underground well section in real time during the combustible ice mining process, which not only ensures the operational safety of the device during the entire combustible ice mining process, but also improves the accuracy and efficiency of combustible ice mining.

[0040] The spiral heating wire 6 and the hydraulic cylinder 701 are finished products produced using existing technologies and can be purchased on the market; the components are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combustible ice mining device based on a coiled tubing, comprising a coiled tubing assembly (1) and a combustible ice mining assembly (5), characterized in that: The combustible ice mining component (5) is arranged at the lower end of the continuous tubing component (1), and the combustible ice mining component (5) can move to the underground combustible ice mining section along with the movement of the continuous tubing component (1); the outer wall of the continuous tubing component (1) is provided with a mining monitoring component (2), a hydraulic control pipeline (4) and a power supply control cable (3); the outer wall of the combustible ice mining component (5) is spirally wound with a spiral heating wire (6), and the outer wall of the combustible ice mining component (5) is also provided with a hydraulic sleeve component (7); One end of the hydraulic control pipeline (4) is connected to the hydraulic sleeve assembly (7), and the other end of the hydraulic control pipeline (4) is connected to an external hydraulic control module after extending out of the ground; one end of the power supply control cable (3) is connected to the spiral heating wire (6), and the other end of the power supply control cable (3) is connected to the external power supply control module after extending out of the ground; The spiral heating wire (6) is used to heat the combustible ice reservoir on the outer wall of the combustible ice mining component (5) and gasify the combustible ice; the combustible ice mining component (5) is used to carry the spiral heating wire (6) and the hydraulic sleeve component (7) and provide a gas passage; the hydraulic sleeve component (7) is used to open or close an open end of the gas passage provided inside the combustible ice mining component (5); The mining monitoring component (2) is used to monitor and measure the noise data, temperature data, pressure data and strain data inside and outside the continuous tubing component (1) in real time during the methane hydrate mining process, and simultaneously monitor the status of the continuous tubing component (1) and the methane hydrate mining component (5) during the methane hydrate mining operation and the changes in the noise, temperature, pressure and strain environment inside and outside the wellbore.

2. The combustible ice mining device based on a coiled tubing according to claim 1 is characterized in that: The combustible ice mining component (5) comprises a combustible ice mining short section (501), the outer wall of the combustible ice mining short section (501) is provided with a side groove (502), the inner wall of the side groove (502) is provided with a gas collection channel (503), and the inner wall of the gas collection channel (503) is provided with a sand-proof steel wire mesh (504), wherein the sand-proof steel wire mesh (504) is used to perform sand and gravel filtering operations on the combustible ice gas flowing through the gas collection channel (503).

3. The combustible ice mining device based on a coiled tubing according to claim 2 is characterized in that: The hydraulic sleeve assembly (7) comprises a hydraulic cylinder (701), wherein the hydraulic cylinder (701) is arranged on the inner wall of the side groove (502), one end of a hydraulic telescopic rod (702) is slidably connected to the inner wall of the hydraulic cylinder (701), and the other end of the hydraulic telescopic rod (702) is fixedly connected to a slider (703), wherein the slider (703) can completely close the open end of the gas collection channel (503).

4. The combustible ice mining device based on a coiled tubing according to claim 1 is characterized in that: The mining monitoring component (2) comprises a straight light unit (201) and a straight strain light unit (202); The straight optical unit (201) comprises a straight single-mode optical fiber, a straight multi-mode optical fiber and a straight continuous grating optical fiber, wherein the straight single-mode optical fiber is connected to a signal input end of an external DAS signal input module, the straight multi-mode optical fiber is connected to a signal input end of an external DTS signal input module, and the straight continuous grating optical fiber is connected to a signal input end of an external DPS signal input module, wherein the straight single-mode optical fiber, the straight multi-mode optical fiber and the straight continuous grating optical fiber are all made of high temperature resistant and hydrogen loss resistant optical fiber; A straight single-mode strain optical fiber is arranged inside the straight strain optical unit (202), and the straight single-mode strain optical fiber is connected to the signal input end of an external DSS signal input module, wherein the straight single-mode strain optical fiber is made by extruding a high-temperature resistant and high-strength flexible composite material on the outer wall of the straight single-mode optical fiber and increasing the diameter of the straight single-mode optical fiber to 1 mm to 2 mm, and then tightly wrapping it inside a stainless steel tube with an inner diameter of 1 mm to 2 mm, and the straight single-mode strain optical fiber is used to sense stress and strain inside and outside the stainless steel tube.

5. The combustible ice mining device based on coiled tubing according to claim 4 is characterized in that: The coiled tubing assembly (1) comprises a coiled tubing body (101), and the outer side wall of the coiled tubing body (101) is evenly provided with a first clamping groove (102), a second clamping groove (103) and a third clamping groove (104); The number of the first card slots (102) is two, and the inner side walls of the two first card slots (102) are respectively wedged with the outer side walls of the straight light unit (201) and the straight strain light unit (202); the number of the second card slots (103) is at least four, and the inner side walls of at least four second card slots (103) are wedged with the outer side wall of the power supply control cable (3); the number of the third card slots (104) is two, and the inner side walls of the two third card slots (104) are wedged with the outer side wall of the hydraulic control pipeline (4).

6. The combustible ice mining device based on coiled tubing according to claim 5 is characterized in that: The straight optical unit (201), the straight strain optical unit (202), the hydraulic control pipeline (4), the power supply control cable (3) and the coiled tubing body (101) are all connected by welding.

7. The combustible ice mining device based on coiled tubing according to claim 5 is characterized in that: The coiled tubing assembly (1) further comprises a flexible composite layer (105), the flexible composite layer (105) being coated on the outer wall of the coiled tubing body (101), and the outer wall of the flexible composite layer (105) being sleeved with a stainless steel protective sleeve (106).

8. The combustible ice mining device based on coiled tubing according to claim 3 is characterized in that: The number of the side grooves (502), the gas collection channels (503) and the hydraulic sleeve assembly (7) is multiple, and the multiple gas collection channels (503) are linearly and evenly distributed on the outer side wall of the combustible ice mining short section (501).

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