CN103696746B - A kind of microwave excitation Desorption And Seepage of Coalbed Methane experimental facilities - Google Patents
A kind of microwave excitation Desorption And Seepage of Coalbed Methane experimental facilities Download PDFInfo
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000003795 desorption Methods 0.000 title claims abstract description 26
- 230000005284 excitation Effects 0.000 title claims abstract description 7
- 239000003245 coal Substances 0.000 claims abstract description 36
- 210000004907 gland Anatomy 0.000 claims abstract description 36
- 238000004826 seaming Methods 0.000 claims abstract 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 4
- 230000009471 action Effects 0.000 abstract description 5
- 238000011990 functional testing Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 14
- 238000003825 pressing Methods 0.000 description 12
- 238000007906 compression Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000005065 mining Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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Abstract
Description
技术领域technical field
本发明属于煤层气解吸渗流实验装置，特别是涉及一种微波激励煤层气解吸渗流实验装置。The invention belongs to a coal bed gas desorption seepage experimental device, in particular to a microwave excited coal bed gas desorption seepage experimental device.
背景技术Background technique
煤层气成分主要是甲烷（占85%以上），通常称为瓦斯或沼气，是重要的新兴能源。我国是煤层气储能大国，对煤层气的开发利用不但能够增大煤矿生产安全系数，提高经济效益，还能极大的缓解我国能源紧张状况，但我国大部分地区煤层属于低渗透煤层，煤层气的抽采效率极低，无法进行常规工业化开采。The main component of coalbed methane is methane (accounting for more than 85%), commonly known as gas or biogas, which is an important new energy source. my country is a large coalbed methane energy storage country. The development and utilization of coalbed methane can not only increase the safety factor of coal mine production, improve economic benefits, but also greatly alleviate the energy shortage in my country. However, most of the coal seams in my country are low-permeability coal seams. The extraction efficiency of natural gas is extremely low, and conventional industrial exploitation cannot be carried out.
热力开采法是针对低渗透煤层进行煤层气开采的方法。利用热能注入提高煤层气解吸渗流速度，从而达到大幅度提高煤层气产量的目的。热力开采法的主要技术手段是电加热、蒸汽注热和微波加热。热力开采法虽然在理论上能够实现提高煤层气产量的目的，但是针对注热开采时煤层气的解吸渗流过程的研究还远没有达到机理清晰、规律明确的程度，还无法投入工业生产中去。微波加热和蒸汽、电加热方式比较，其产热及热传导方式不同，微波可穿透介质将能量直接传导入介质分子中，由分子的震动摩擦产生热量，因此可对对象深部进行加热，并有较高的热效率。因此利用微波进行热力开采煤层气是一种非常有潜力的开采方法。现有的煤层气解吸渗流实验装置主要集中在电加热和蒸汽注热方式上，由于微波能量传输、加载的复杂性目前采用微波作用于煤岩的实验装置无法模拟地下煤岩受力状态，使得微波作用下煤层气解吸渗流过程无法进行实验研究。The thermal mining method is a method of coalbed methane mining for low-permeability coal seams. The thermal energy injection is used to increase the desorption seepage velocity of coalbed methane, so as to achieve the purpose of greatly increasing the output of coalbed methane. The main technical means of the thermal mining method are electric heating, steam injection and microwave heating. Although the thermal mining method can achieve the purpose of increasing the production of coalbed methane in theory, the research on the desorption and seepage process of coalbed methane during thermal injection mining is far from reaching the level of clear mechanism and clear rules, and it cannot be put into industrial production. Compared with steam and electric heating methods, microwave heating has different heat generation and heat conduction methods. Microwaves can penetrate the medium and transmit energy directly into the medium molecules, and heat is generated by the vibration and friction of the molecules. Therefore, it can heat the deep part of the object and has High thermal efficiency. Therefore, thermal exploitation of coalbed methane by using microwave is a very potential mining method. The existing coalbed methane desorption seepage experimental devices mainly focus on electric heating and steam heating methods. Due to the complexity of microwave energy transmission and loading, the current experimental devices using microwaves to act on coal rocks cannot simulate the stress state of underground coal rocks, making The seepage process of coalbed methane desorption under the action of microwave cannot be studied experimentally.
发明内容Contents of the invention
针对现有技术存在的问题，本发明提供一种微波激励煤层气解吸渗流实验装置，该实验装置具有三轴加载功能，可实现对煤层气解吸渗流的功能测试，获得微波作用下煤层气解吸渗流规律，为煤层气资源的合理抽放和综合利用提供可靠的数据。Aiming at the problems existing in the prior art, the present invention provides a microwave-excited coalbed methane desorption seepage experimental device. The experimental device has a three-axis loading function, which can realize the functional test of the coalbed methane desorption seepage, and obtain the coalbed methane desorption seepage under the action of microwaves. The law provides reliable data for the rational drainage and comprehensive utilization of coalbed methane resources.
为了实现上述目的，本发明采用如下技术方案：一种微波激励煤层气解吸渗流实验装置，包括三轴加压装置和微波发生装置，三轴加压装置由上、下压盖、筒体、活塞、挡板及上、下压头组成，微波发生装置由微波天线、波导管、谐振腔、磁控管及控制器组成，上、下压盖分别设置在筒体的上、下部，在上、下压盖的底面上分别设置有上、下压盖贯通孔，在下压盖内部设置有活塞，在活塞上方的下压盖或筒体的内侧壁上固定有挡板，在下压盖内部设置有穿过挡板的下压头，在下压头的底部设置有下压头第一凸起，下压头第一凸起的外端设置在下压盖的外部，在下压头及下压头第一凸起的内部设置有贯通的下压头出气孔和下压头贯通孔，在下压头贯通孔内设置有温度传感器；在筒体内侧壁上设置有微波天线，在筒体内设置有上压头，在上压头的顶部设置有上压头第一凸起，上压头第一凸起的外端设置在上压盖外部，在上压头及上压头第一凸起的内部设置有贯通的上压头进气孔；在筒体外部设置有波导管、谐振腔、磁控管及控制器，谐振腔的一端与磁控管相连，另一端与波导管相连，磁控管与控制器相连，微波天线的一端设置在波导管内；在上、下压头之间设置有煤体，在煤体、上压头及下压头的外部设置有热缩管，下压头贯通孔与煤体的内部相连通，温度传感器的感温部分设置在煤体的内部。In order to achieve the above object, the present invention adopts the following technical scheme: a microwave-excited coalbed methane desorption seepage experimental device, including a triaxial pressurization device and a microwave generating device, the triaxial pressurization device consists of an upper and a lower gland, a cylinder, a piston , baffles and upper and lower pressure heads. The microwave generating device is composed of microwave antenna, waveguide, resonant cavity, magnetron and controller. The upper and lower glands are respectively set on the upper and lower parts of the cylinder. The bottom surface of the lower gland is respectively provided with upper and lower gland through holes, a piston is arranged inside the lower gland, a baffle is fixed on the lower gland above the piston or the inner side wall of the cylinder, and a baffle is arranged inside the lower gland. The lower pressing head passing through the baffle is provided with a first protrusion of the lower pressing head at the bottom of the lower pressing head, and the outer end of the first protrusion of the lower pressing head is arranged on the outside of the lower pressing head. The interior of the protrusion is provided with a through hole for the lower pressure head and a through hole for the lower pressure head, and a temperature sensor is arranged in the through hole of the lower pressure head; a microwave antenna is arranged on the inner wall of the cylinder, and an upper pressure head is arranged in the cylinder , the top of the upper pressing head is provided with a first protrusion of the upper pressing head, the outer end of the first protrusion of the upper pressing head is arranged outside the upper gland, and the upper pressing head and the inside of the first protrusion of the upper pressing head are provided with Through the air inlet of the upper pressure head; a waveguide, a resonant cavity, a magnetron and a controller are arranged outside the cylinder, one end of the resonant cavity is connected to the magnetron, the other end is connected to the waveguide, and the magnetron is connected to the control Connected with the device, one end of the microwave antenna is set in the waveguide; a coal body is arranged between the upper and lower pressure heads, and a heat shrinkable tube is arranged outside the coal body, the upper pressure head and the lower pressure head, and the through hole of the lower pressure head is connected with the The inside of the coal body is connected, and the temperature sensing part of the temperature sensor is arranged inside the coal body.
在所述挡板上方的筒体底部的内侧壁上设置有天线支架，在天线支架内侧壁上设置有螺旋状凹槽，微波天线设置在螺旋状凹槽内。An antenna bracket is arranged on the inner wall of the cylinder bottom above the baffle, and a spiral groove is arranged on the inner wall of the antenna bracket, and the microwave antenna is arranged in the spiral groove.
所述微波天线与温度传感器的感温部分相对应。The microwave antenna corresponds to the temperature sensing part of the temperature sensor.
所述上、下压盖均设置在筒体外部，且与筒体通过螺纹连接。The upper and lower glands are both arranged outside the cylinder and connected to the cylinder through threads.
在所述筒体下方的下压盖内侧壁上设置有凸起，所述挡板设置在筒体底面与凸起上表面之间。A protrusion is arranged on the inner side wall of the lower gland below the cylinder, and the baffle is arranged between the bottom surface of the cylinder and the upper surface of the protrusion.
在所述上压头和挡板上方的下压头的侧壁上设置有锥形面，在锥形面上设置有压垫，压垫通过压紧螺母固定在锥形面上，压紧螺母与上、下压头侧壁以螺纹连接，热缩管两端通过压垫和压紧螺母固定在上、下压头上。A tapered surface is provided on the side wall of the lower pressure head above the upper pressure head and the baffle plate, and a pressure pad is arranged on the tapered surface, and the pressure pad is fixed on the tapered surface by a compression nut, and the compression nut It is threadedly connected with the side walls of the upper and lower pressure heads, and the two ends of the heat-shrinkable tube are fixed on the upper and lower pressure heads through pressure pads and compression nuts.
本发明的有益效果：Beneficial effects of the present invention:
本发明实验装置具有三轴加载功能，可实现对煤层气解吸渗流的功能测试，获得微波作用下煤层气解吸渗流性能参数，为煤层气资源的合理抽放和综合利用提供可靠的数据；本发明实验装置结构简单、性能可靠、操作方便、节约成本。The experimental device of the present invention has a three-axis loading function, which can realize the functional test of the coalbed methane desorption seepage, obtain the performance parameters of the coalbed methane desorption seepage under the action of microwaves, and provide reliable data for the rational drainage and comprehensive utilization of coalbed methane resources; the present invention The experimental device has the advantages of simple structure, reliable performance, convenient operation and cost saving.
附图说明Description of drawings
图1是本发明的微波激励煤层气解吸渗流实验装置的结构示意图；Fig. 1 is the structural representation of microwave excitation coalbed methane desorption seepage experimental device of the present invention;
图中，1—谐振腔，2—磁控管，3—压紧螺母，4—压垫，5—温度传感器，6—微波天线，7—波导管，8—下压头，81—下压头出气孔，82—下压头贯通孔，83—下压头第一凸起，9—活塞，10—挡板，11—下压盖，111—下压盖贯通孔，12—筒体，13—天线支架，14—煤体，15—上压盖，151—上压盖贯通孔，16—上压头，161—上压头进气孔，162—上压头第一凸起，17—热缩管，18—控制器。In the figure, 1—resonant cavity, 2—magnetron, 3—compression nut, 4—pressure pad, 5—temperature sensor, 6—microwave antenna, 7—waveguide, 8—down pressure head, 81—down pressure Head outlet, 82—the through hole of the lower pressure head, 83—the first protrusion of the lower pressure head, 9—the piston, 10—the baffle, 11—the lower gland, 111—the through hole of the lower gland, 12—the cylinder, 13—antenna bracket, 14—coal body, 15—upper gland, 151—through hole of upper gland, 16—upper pressure head, 161—intake hole of upper pressure head, 162—first protrusion of upper pressure head, 17 —heat shrink tube, 18—controller.
具体实施方式detailed description
下面结合附图和具体实施例对本发明做进一步的详细说明。The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
如图1所示，一种微波激励煤层气解吸渗流实验装置，包括三轴加压装置和微波发生装置，三轴加压装置由圆筒形的上、下压盖、筒体12、活塞9、挡板10及圆柱形的上、下压头组成，微波发生装置由微波天线6、波导管7、谐振腔1、磁控管2及控制器18组成，上、下压盖分别设置在筒体12的上、下部，在上、下压盖的底面中部均轴向设置有通孔，在上、下压盖的底面边缘分别设置有上、下压盖贯通孔，在下压盖11内部设置具有通孔的活塞9，活塞9的外侧壁与下压盖11的内侧壁紧密接触，且活塞9能够沿着下压盖11的内侧壁上、下移动；在活塞9上方的下压盖11内侧壁上固定具有通孔的挡板10，以便活塞9能够在加载压力的情况下上、下移动；在下压盖11内部设置有穿过挡板10通孔的下压头8，在下压头8的底部设置有圆柱形的下压头第一凸起83，下压头第一凸起83的外端依次通过活塞9的通孔、下压盖11的通孔设置在下压盖11的外部，在下压头8及下压头第一凸起83的内部轴向设置有贯通的下压头出气孔81和下压头贯通孔82，在下压头贯通孔82内设置有杆状的温度传感器5；在挡板10上方的筒体12底部的内侧壁上设置有天线支架13，在天线支架13内侧壁上设置有螺旋状凹槽，在螺旋状凹槽内固定有微波天线6的螺旋部分；在下压头的上方的筒体12内设置有上压头16，在上压头16顶部设置有上压头第一凸起162，上压头第一凸起162的外端通过上压盖15的通孔设置在上压盖15的外部，在上压头16及上压头第一凸起162的内部轴向设置有贯通的上压头进气孔161；在筒体12外部设置有波导管7、谐振腔1、磁控管2及控制器18，谐振腔1一端与磁控管2相连，另一端与水平设置的波导管7相连，控制器18的输出接口与磁控管2的电源端相连，由控制器18提供磁控管2所需电源，通过调整控制器18的输出电流改变磁控管2的输出功率；在天线支架13及筒体12侧壁上均设置有贯通孔，微波天线6的端头部分通过天线支架13及筒体12侧壁上的贯通孔设置在波导管7内，波导管7端面与筒体12外壁紧密接触，防止微波泄漏；实验时在上、下压头之间设置具有中心槽的煤体14，中心槽底部设置在煤体14中心，中心槽开口设置在煤体14底部，在煤体14、上压头16及挡板10上方的下压头8的外部设置有热缩管17，热缩管17两端分别固定在上、下压头上，对煤体14进行密封；下压头贯通孔82与煤体14的中心槽相连通，温度传感器5顶端的感温部分设置在煤体14的中心槽内。As shown in Figure 1, a microwave-excited coalbed methane desorption seepage experimental device includes a triaxial pressurization device and a microwave generator. The triaxial pressurization device consists of cylindrical upper and lower glands, a cylinder body 12, and a piston 9 , baffle plate 10 and cylindrical upper and lower pressure heads, the microwave generating device is composed of microwave antenna 6, waveguide 7, resonant cavity 1, magnetron 2 and controller 18, and the upper and lower glands are respectively arranged on the barrel The upper and lower parts of the body 12 are axially provided with through holes in the middle of the bottom surface of the upper and lower glands, and the upper and lower gland through holes are respectively provided on the bottom surface edges of the upper and lower glands. There is a piston 9 with a through hole, the outer wall of the piston 9 is in close contact with the inner wall of the lower gland 11, and the piston 9 can move up and down along the inner wall of the lower gland 11; the lower gland 11 above the piston 9 A baffle plate 10 with a through hole is fixed on the inner side wall, so that the piston 9 can move up and down under the situation of loading pressure; the lower pressure head 8 passing through the through hole of the baffle plate 10 is arranged inside the lower gland 11, and the lower pressure head 8 is arranged on the lower pressure head. The bottom of 8 is provided with the first protrusion 83 of cylindrical lower pressure head, and the outer end of the first protrusion 83 of lower pressure head passes through the through hole of piston 9 and the through hole of lower gland 11 successively and is arranged on the outside of lower gland 11. , the lower pressure head air outlet hole 81 and the lower pressure head through hole 82 are axially provided inside the lower pressure head 8 and the first protrusion 83 of the lower pressure head, and a rod-shaped temperature sensor is arranged in the lower pressure head through hole 82 5; An antenna support 13 is provided on the inner wall of the bottom of the cylinder 12 above the baffle 10, and a spiral groove is arranged on the inner wall of the antenna support 13, and the spiral part of the microwave antenna 6 is fixed in the spiral groove ;In the cylinder 12 above the lower pressure head, an upper pressure head 16 is provided, and the top of the upper pressure head 16 is provided with a first protrusion 162 of the upper pressure head, and the outer end of the first protrusion 162 of the upper pressure head passes through the upper gland The through hole of 15 is arranged on the outside of the upper gland 15, and the upper pressure head air inlet 161 is arranged axially through the upper pressure head 16 and the first protrusion 162 of the upper pressure head; Waveguide 7, resonant cavity 1, magnetron 2 and controller 18, one end of resonant cavity 1 is connected with magnetron 2, the other end is connected with waveguide 7 arranged horizontally, the output interface of controller 18 is connected with magnetron 2 connected to the power supply terminal, the controller 18 provides the required power for the magnetron 2, and the output power of the magnetron 2 is changed by adjusting the output current of the controller 18; hole, the end part of the microwave antenna 6 is set in the waveguide 7 through the antenna bracket 13 and the through hole on the side wall of the cylinder 12, and the end surface of the waveguide 7 is in close contact with the outer wall of the cylinder 12 to prevent microwave leakage; 1. A coal body 14 with a central groove is arranged between the lower pressing heads, the bottom of the central groove is arranged at the center of the coal body 14, the opening of the central groove is arranged at the bottom of the coal body 14, and the upper part of the coal body 14, the upper pressing head 16 and the baffle plate 10 A heat-shrinkable tube 17 is arranged outside the lower pressure head 8, and the two ends of the heat-shrinkable tube 17 are respectively fixed on the upper and lower pressure heads to seal the coal body 14; the through-hole 82 of the lower pressure head is connected to the central groove of the coal body 14 Pass, temperature transmission The temperature sensing part at the top of the sensor 5 is arranged in the central groove of the coal body 14 .
所述微波天线6与温度传感器5的感温部分相对应，便于温度传感器5及时检测到微波加热温度。The microwave antenna 6 corresponds to the temperature sensing part of the temperature sensor 5, so that the temperature sensor 5 can detect the microwave heating temperature in time.
所述温度传感器5的感温部分为t型热电偶，t型热电偶型号为：WRC。The temperature sensing part of the temperature sensor 5 is a T-type thermocouple, and the type of the T-type thermocouple is: WRC.
所述上、下压盖均设置在筒体12外部，且与筒体12通过螺纹连接。The upper and lower glands are both arranged outside the cylinder body 12 and connected with the cylinder body 12 through threads.
在所述筒体12下方的下压盖11内侧壁上设置有凸起，所述挡板10设置在筒体12底面与凸起上表面之间。A protrusion is provided on the inner side wall of the lower gland 11 below the cylinder body 12 , and the baffle plate 10 is disposed between the bottom surface of the cylinder body 12 and the upper surface of the protrusion.
在所述上压头16和挡板10上方的下压头8的侧壁上设置有锥形面，在锥形面上设置有压垫4，压垫4通过压紧螺母3固定在锥形面上，压紧螺母3与上、下压头侧壁以螺纹连接，热缩管17两端通过压垫4和压紧螺母3固定在上、下压头上。On the side wall of the lower pressure head 8 above the upper pressure head 16 and the baffle plate 10, a tapered surface is provided, and a pressure pad 4 is arranged on the tapered surface, and the pressure pad 4 is fixed on the cone by a compression nut 3. On the surface, the compression nut 3 is threadedly connected to the side walls of the upper and lower pressure heads, and the two ends of the heat shrinkable tube 17 are fixed on the upper and lower pressure heads through the pressure pad 4 and the compression nut 3 .
所述磁控管2的型号为2M219K。The model of the magnetron 2 is 2M219K.
下面结合附图说明本发明的一次使用过程：Below in conjunction with accompanying drawing, the one-time use process of the present invention is illustrated:
如图1所示，在密封的空间内，煤体14在上压头16和下压头8之间压紧固定，并通过热缩管17密封，加载用的液体或气体从上压盖贯通孔151和下压盖贯通孔111进入，从上压盖贯通孔151充入的气体或者液体直接作用于热缩管17，加载于煤体14周围，从下压盖贯通孔111充入的气体或者液体作用于活塞9，活塞9推动下压头8，给煤体14加载轴向压力，实现对煤体14三轴加载。煤层气可先由上压头进气孔161导入，待煤体14充分吸附后，通过下压头出气孔81排出，进行解吸量测定，磁控管2产生的微波通过谐振腔1改变传输方向后导入波导管7，波导管7通过微波天线端头61改变传输参数传输给螺旋状微波天线6，由螺旋状微波天线6形成高频变化的磁场作用于煤体14，在煤层气解吸过程中对煤体14进行激励，通过煤体14中心槽底部的温度传感器5顶端的感温部分，对煤体14中心温度进行测量；通过调整控制器18改变磁控管2的输出功率、微波天线6参数及微波加热时间，得到相应的煤层气解吸速度、煤体14渗透率等数据，对照微波作用过程中的煤体14温度得出微波激励与煤体14解吸和渗透规律，对合理增产煤层气提供依据。As shown in Figure 1, in the sealed space, the coal body 14 is compressed and fixed between the upper pressure head 16 and the lower pressure head 8, and is sealed by the heat shrinkable tube 17, and the liquid or gas used for loading passes through the upper gland Hole 151 and lower gland through hole 111 enter, the gas or liquid charged from the upper gland through hole 151 directly acts on the heat shrinkable tube 17, and is loaded around the coal body 14, the gas charged from the lower gland through hole 111 Or the liquid acts on the piston 9, and the piston 9 pushes the lower pressure head 8 to load the coal body 14 with axial pressure, so as to realize triaxial loading on the coal body 14. Coalbed methane can first be introduced through the air inlet 161 of the upper pressure head, and after the coal body 14 is fully absorbed, it is discharged through the air outlet 81 of the lower pressure head to measure the amount of desorption. The microwave generated by the magnetron 2 passes through the resonant cavity 1 to change the transmission direction After that, it is introduced into the waveguide 7, and the waveguide 7 changes the transmission parameters through the microwave antenna end 61 and transmits it to the helical microwave antenna 6. The high-frequency changing magnetic field formed by the helical microwave antenna 6 acts on the coal body 14. During the desorption process of coalbed methane Excite the coal body 14, and measure the central temperature of the coal body 14 through the temperature sensing part at the top of the temperature sensor 5 at the bottom of the central tank of the coal body 14; change the output power of the magnetron 2 and the microwave antenna 6 by adjusting the controller 18 parameters and microwave heating time to obtain the corresponding coalbed methane desorption speed, coalbed 14 permeability and other data, compared with the coalbed 14 temperature in the process of microwave action to obtain the law of microwave excitation and coalbed 14 desorption and permeation, which is helpful for the reasonable increase of coalbed methane Provide evidence.
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| CN105738578B (en) * | 2016-04-11 | 2017-06-23 | 河南理工大学 | Microwave encourages coal petrography gas adsorption-desorption characteristics experimental provision and method |
| CN107101907A (en) * | 2017-06-19 | 2017-08-29 | 辽宁工程技术大学 | A kind of excitation of electromagnetic wave Unconventional gas seepage experimental apparatus |
| CN108717033B (en) * | 2018-05-14 | 2021-03-16 | 华北科技学院 | An experimental device and experimental method for improving coal gas desorption rate by using magnetic particles |
| CN109115659A (en) * | 2018-08-02 | 2019-01-01 | 西南石油大学 | A kind of experimental method for verifying coal bed gas microwave mining feasibility |
| WO2020024658A1 (en) * | 2018-08-02 | 2020-02-06 | 西南石油大学 | Experimental method for verifying feasibility of coalbed methane microwave mining |
| CN110823707A (en) * | 2019-11-18 | 2020-02-21 | 中国矿业大学 | Sample true triaxial seal loading device and method for pressure relief coalbed methane development simulation |
| CN110823757A (en) * | 2019-11-28 | 2020-02-21 | 辽宁工程技术大学 | Low-permeability coal bed gas microwave-liquid nitrogen circulating freeze-thaw degradation-promotion permeability-increasing experimental device and method |
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