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Coal Mine Gas and Coalbed Methane

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2021-09-27

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Coal mine gas and coalbed methane coal mine gas has many hazards, the current management of coal mine gas is mainly through the extraction technology to control. In view of the general low permeability coal seam conditions in China, it is usually through the mining of protective layer, hydraulic fracturing, hydraulic cutting, hydraulic punching, controlled pre-splitting blasting, intensive drilling, gas phase fracturing and other technologies to increase permeability first, and then carry out coalbed methane extraction to control gas disasters. So what is the difference between the two concepts of coal mine gas and coalbed methane? Take a look at how the current standards define the two. 1. Coal mine gas (1) According to the National Energy Administration's "Eleventh Five-Year Plan for the Development and Utilization of Coalbed Methane (Coal Mine Gas)"

 

Coal Mine Gas and Coalbed Methane

 

Coal mine gas has many hazards, the current management of coal mine gas is mainly through the extraction technology to control. In view of the general low permeability coal seam conditions in China, it is usually through the mining of protective layer, hydraulic fracturing, hydraulic cutting, hydraulic punching, controlled pre-splitting blasting, intensive drilling, gas phase fracturing and other technologies to increase permeability first, and then carry out coalbed methane extraction to control gas disasters. So what is the difference between the two concepts of coal mine gas and coalbed methane? Take a look at how the current standards define the two.

1. Coal mine gas
(1) According to the National Energy Administration's "Eleventh Five-Year Plan for the Development and Utilization of Coalbed Methane (Coal Mine Gas)" (2006), coal mine gas is a general term for harmful gases mainly methane emitted from underground coal and rock mass. The composition of coal mine gas is more complex, in addition to methane (80% ~ 90%), but also contains heavy hydrocarbons (ethane, propane), carbon dioxide, nitrogen and some rare gases, individual mines also contain hydrogen, carbon monoxide or hydrogen sulfide.
(2) The "Technical Specification for Coalbed Methane Resources Exploration" defines coal mine gas, referred to as gas, refers to the natural gas that flows into the mine roadway and working face from the coal seam and its surrounding rock during the coal mine mining process, mainly composed of methane, sometimes referred to as methane alone.
(3) The national standard "Guidelines for the Utilization of Coalbed Methane (Coal Mine Gas)" defines coal mine gas as: refers to the natural gas that flows into the mining space from the coal seam and surrounding rock during the coal mining process or is extracted through pipelines.
(4) the national standard "coalbed methane (coal mine gas) terminology" defines the mine gas: in the mine, from the coal and surrounding rock in the escape of methane-based gas mixture.
(5) "Coal Mine Safety Regulations" (2016) defines gas as follows: gas is a harmful gas mainly composed of coalbed methane in mines. Sometimes referred to as methane alone.

2. CBM
(1) According to the National Energy Administration's "Eleventh Five-Year Plan for the Development and Utilization of Coalbed Methane (Coal Mine Gas)" (2006), coalbed methane is a hydrocarbon gas that exists in coal seams with methane as the main component, adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water.
(2) According to the Ministry of Finance and the State Administration of Taxation "Notice on Tax Policy Issues Concerning Accelerating Coalbed Methane Extraction" (Caishui [2007] No. 16), coalbed methane refers to the occurrence of coal seams and surrounding rocks associated with coal resources Unconventional natural gas, also known as coal mine gas.
(3) according to the national standard "coalbed methane (coal mine gas) emission standards (provisional)", coalbed methane refers to the existence of coal seam with methane as the main component, to be adsorbed on the surface of the coal matrix particles, part of the free in the coal pores or dissolved in the coal seam water of the hydrocarbon gas.
(4) According to the Technical Specification for Exploration of Coalbed Methane Resources, coalbed methane occurs in coal seams, with methane as the main component, mainly adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water.
(5) According to the national standard "Guidelines for the Utilization of Coalbed Methane (Coal Mine Gas)", coalbed methane usually refers to natural gas resources with methane as the main component in coal seams and surrounding rocks. This standard specifically refers to natural gas with methane as the main component extracted by ground.
(6) According to the national standard "coalbed methane (coal mine gas) terminology", coalbed methane is a natural gas that occurs in coal seams and is associated with coal, with methane as the main component.
(7) According to the national geological industry standard "Specification for Coalbed Methane Resources/Reserves", coalbed methane refers to hydrocarbon gases in coal seams with methane as the main component, adsorbed on the surface of coal matrix particles and partially free in coal pores or dissolved in coal seam water.

3. Similarities and differences between coal mine gas and coalbed methane
Similarities: 
The main components of both are methane, which mainly comes from coal seams and surrounding rocks.
Different points:
The ingredients are different. The composition of coal mine gas is more complex, including coalbed methane components, but also includes other components, such as other gases generated in the production process.
The storage location is different. Coal mine gas is stored in the mining space, while coalbed methane is stored in coal seams or surrounding rocks. as shown in Figure 1. It can be seen from here that coal mine gas and coalbed methane are two completely different concepts. It cannot be simply understood that coalbed methane is sometimes called coal mine gas. It refers to the same thing and can be used together.

 




Reprinted from the coal mine gas disaster prevention and control, infringement will be deleted.

Coal Mine Gas and Coalbed Methane

 

Coal mine gas has many hazards, the current management of coal mine gas is mainly through the extraction technology to control. In view of the general low permeability coal seam conditions in China, it is usually through the mining of protective layer, hydraulic fracturing, hydraulic cutting, hydraulic punching, controlled pre-splitting blasting, intensive drilling, gas phase fracturing and other technologies to increase permeability first, and then carry out coalbed methane extraction to control gas disasters. So what is the difference between the two concepts of coal mine gas and coalbed methane? Take a look at how the current standards define the two.

1. Coal mine gas
(1) According to the National Energy Administration's "Eleventh Five-Year Plan for the Development and Utilization of Coalbed Methane (Coal Mine Gas)" (2006), coal mine gas is a general term for harmful gases mainly methane emitted from underground coal and rock mass. The composition of coal mine gas is more complex, in addition to methane (80% ~ 90%), but also contains heavy hydrocarbons (ethane, propane), carbon dioxide, nitrogen and some rare gases, individual mines also contain hydrogen, carbon monoxide or hydrogen sulfide.
(2) The "Technical Specification for Coalbed Methane Resources Exploration" defines coal mine gas, referred to as gas, refers to the natural gas that flows into the mine roadway and working face from the coal seam and its surrounding rock during the coal mine mining process, mainly composed of methane, sometimes referred to as methane alone.
(3) The national standard "Guidelines for the Utilization of Coalbed Methane (Coal Mine Gas)" defines coal mine gas as: refers to the natural gas that flows into the mining space from the coal seam and surrounding rock during the coal mining process or is extracted through pipelines.
(4) the national standard "coalbed methane (coal mine gas) terminology" defines the mine gas: in the mine, from the coal and surrounding rock in the escape of methane-based gas mixture.
(5) "Coal Mine Safety Regulations" (2016) defines gas as follows: gas is a harmful gas mainly composed of coalbed methane in mines. Sometimes referred to as methane alone.

2. CBM
(1) According to the National Energy Administration's "Eleventh Five-Year Plan for the Development and Utilization of Coalbed Methane (Coal Mine Gas)" (2006), coalbed methane is a hydrocarbon gas that exists in coal seams with methane as the main component, adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water.
(2) According to the Ministry of Finance and the State Administration of Taxation "Notice on Tax Policy Issues Concerning Accelerating Coalbed Methane Extraction" (Caishui [2007] No. 16), coalbed methane refers to the occurrence of coal seams and surrounding rocks associated with coal resources Unconventional natural gas, also known as coal mine gas.
(3) according to the national standard "coalbed methane (coal mine gas) emission standards (provisional)", coalbed methane refers to the existence of coal seam with methane as the main component, to be adsorbed on the surface of the coal matrix particles, part of the free in the coal pores or dissolved in the coal seam water of the hydrocarbon gas.
(4) According to the Technical Specification for Exploration of Coalbed Methane Resources, coalbed methane occurs in coal seams, with methane as the main component, mainly adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water.
(5) According to the national standard "Guidelines for the Utilization of Coalbed Methane (Coal Mine Gas)", coalbed methane usually refers to natural gas resources with methane as the main component in coal seams and surrounding rocks. This standard specifically refers to natural gas with methane as the main component extracted by ground.
(6) According to the national standard "coalbed methane (coal mine gas) terminology", coalbed methane is a natural gas that occurs in coal seams and is associated with coal, with methane as the main component.
(7) According to the national geological industry standard "Specification for Coalbed Methane Resources/Reserves", coalbed methane refers to hydrocarbon gases in coal seams with methane as the main component, adsorbed on the surface of coal matrix particles and partially free in coal pores or dissolved in coal seam water.

3. Similarities and differences between coal mine gas and coalbed methane
Similarities: 
The main components of both are methane, which mainly comes from coal seams and surrounding rocks.
Different points:
The ingredients are different. The composition of coal mine gas is more complex, including coalbed methane components, but also includes other components, such as other gases generated in the production process.
The storage location is different. Coal mine gas is stored in the mining space, while coalbed methane is stored in coal seams or surrounding rocks. as shown in Figure 1. It can be seen from here that coal mine gas and coalbed methane are two completely different concepts. It cannot be simply understood that coalbed methane is sometimes called coal mine gas. It refers to the same thing and can be used together.

图片

 

Coal Mine Gas and Coalbed Methane

 

Coal mine gas has many hazards, the current management of coal mine gas is mainly through the extraction technology to control. In view of the general low permeability coal seam conditions in China, it is usually through the mining of protective layer, hydraulic fracturing, hydraulic cutting, hydraulic punching, controlled pre-splitting blasting, intensive drilling, gas phase fracturing and other technologies to increase permeability first, and then carry out coalbed methane extraction to control gas disasters. So what is the difference between the two concepts of coal mine gas and coalbed methane? Take a look at how the current standards define the two.

1. Coal mine gas
(1) According to the National Energy Administration's "Eleventh Five-Year Plan for the Development and Utilization of Coalbed Methane (Coal Mine Gas)" (2006), coal mine gas is a general term for harmful gases mainly methane emitted from underground coal and rock mass. The composition of coal mine gas is more complex, in addition to methane (80% ~ 90%), but also contains heavy hydrocarbons (ethane, propane), carbon dioxide, nitrogen and some rare gases, individual mines also contain hydrogen, carbon monoxide or hydrogen sulfide.
(2) The "Technical Specification for Coalbed Methane Resources Exploration" defines coal mine gas, referred to as gas, refers to the natural gas that flows into the mine roadway and working face from the coal seam and its surrounding rock during the coal mine mining process, mainly composed of methane, sometimes referred to as methane alone.
(3) The national standard "Guidelines for the Utilization of Coalbed Methane (Coal Mine Gas)" defines coal mine gas as: refers to the natural gas that flows into the mining space from the coal seam and surrounding rock during the coal mining process or is extracted through pipelines.
(4) the national standard "coalbed methane (coal mine gas) terminology" defines the mine gas: in the mine, from the coal and surrounding rock in the escape of methane-based gas mixture.
(5) "Coal Mine Safety Regulations" (2016) defines gas as follows: gas is a harmful gas mainly composed of coalbed methane in mines. Sometimes referred to as methane alone.

2. CBM
(1) According to the National Energy Administration's "Eleventh Five-Year Plan for the Development and Utilization of Coalbed Methane (Coal Mine Gas)" (2006), coalbed methane is a hydrocarbon gas that exists in coal seams with methane as the main component, adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water.
(2) According to the Ministry of Finance and the State Administration of Taxation "Notice on Tax Policy Issues Concerning Accelerating Coalbed Methane Extraction" (Caishui [2007] No. 16), coalbed methane refers to the occurrence of coal seams and surrounding rocks associated with coal resources Unconventional natural gas, also known as coal mine gas.
(3) according to the national standard "coalbed methane (coal mine gas) emission standards (provisional)", coalbed methane refers to the existence of coal seam with methane as the main component, to be adsorbed on the surface of the coal matrix particles, part of the free in the coal pores or dissolved in the coal seam water of the hydrocarbon gas.
(4) According to the Technical Specification for Exploration of Coalbed Methane Resources, coalbed methane occurs in coal seams, with methane as the main component, mainly adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water.
(5) According to the national standard "Guidelines for the Utilization of Coalbed Methane (Coal Mine Gas)", coalbed methane usually refers to natural gas resources with methane as the main component in coal seams and surrounding rocks. This standard specifically refers to natural gas with methane as the main component extracted by ground.
(6) According to the national standard "coalbed methane (coal mine gas) terminology", coalbed methane is a natural gas that occurs in coal seams and is associated with coal, with methane as the main component.
(7) According to the national geological industry standard "Specification for Coalbed Methane Resources/Reserves", coalbed methane refers to hydrocarbon gases in coal seams with methane as the main component, adsorbed on the surface of coal matrix particles and partially free in coal pores or dissolved in coal seam water.

3. Similarities and differences between coal mine gas and coalbed methane
Similarities: 
The main components of both are methane, which mainly comes from coal seams and surrounding rocks.
Different points:
The ingredients are different. The composition of coal mine gas is more complex, including coalbed methane components, but also includes other components, such as other gases generated in the production process.
The storage location is different. Coal mine gas is stored in the mining space, while coalbed methane is stored in coal seams or surrounding rocks. as shown in Figure 1. It can be seen from here that coal mine gas and coalbed methane are two completely different concepts. It cannot be simply understood that coalbed methane is sometimes called coal mine gas. It refers to the same thing and can be used together.

图片

 

Coal Mine Gas and Coalbed Methane

 

Coal mine gas has many hazards, the current management of coal mine gas is mainly through the extraction technology to control. In view of the general low permeability coal seam conditions in China, it is usually through the mining of protective layer, hydraulic fracturing, hydraulic cutting, hydraulic punching, controlled pre-splitting blasting, intensive drilling, gas phase fracturing and other technologies to increase permeability first, and then carry out coalbed methane extraction to control gas disasters. So what is the difference between the two concepts of coal mine gas and coalbed methane? Take a look at how the current standards define the two.

1. Coal mine gas
(1) According to the National Energy Administration's "Eleventh Five-Year Plan for the Development and Utilization of Coalbed Methane (Coal Mine Gas)" (2006), coal mine gas is a general term for harmful gases mainly methane emitted from underground coal and rock mass. The composition of coal mine gas is more complex, in addition to methane (80% ~ 90%), but also contains heavy hydrocarbons (ethane, propane), carbon dioxide, nitrogen and some rare gases, individual mines also contain hydrogen, carbon monoxide or hydrogen sulfide.
(2) The "Technical Specification for Coalbed Methane Resources Exploration" defines coal mine gas, referred to as gas, refers to the natural gas that flows into the mine roadway and working face from the coal seam and its surrounding rock during the coal mine mining process, mainly composed of methane, sometimes referred to as methane alone.
(3) The national standard "Guidelines for the Utilization of Coalbed Methane (Coal Mine Gas)" defines coal mine gas as: refers to the natural gas that flows into the mining space from the coal seam and surrounding rock during the coal mining process or is extracted through pipelines.
(4) the national standard "coalbed methane (coal mine gas) terminology" defines the mine gas: in the mine, from the coal and surrounding rock in the escape of methane-based gas mixture.
(5) "Coal Mine Safety Regulations" (2016) defines gas as follows: gas is a harmful gas mainly composed of coalbed methane in mines. Sometimes referred to as methane alone.

2. CBM
(1) According to the National Energy Administration's "Eleventh Five-Year Plan for the Development and Utilization of Coalbed Methane (Coal Mine Gas)" (2006), coalbed methane is a hydrocarbon gas that exists in coal seams with methane as the main component, adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water.
(2) According to the Ministry of Finance and the State Administration of Taxation "Notice on Tax Policy Issues Concerning Accelerating Coalbed Methane Extraction" (Caishui [2007] No. 16), coalbed methane refers to the occurrence of coal seams and surrounding rocks associated with coal resources Unconventional natural gas, also known as coal mine gas.
(3) according to the national standard "coalbed methane (coal mine gas) emission standards (provisional)", coalbed methane refers to the existence of coal seam with methane as the main component, to be adsorbed on the surface of the coal matrix particles, part of the free in the coal pores or dissolved in the coal seam water of the hydrocarbon gas.
(4) According to the Technical Specification for Exploration of Coalbed Methane Resources, coalbed methane occurs in coal seams, with methane as the main component, mainly adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water.
(5) According to the national standard "Guidelines for the Utilization of Coalbed Methane (Coal Mine Gas)", coalbed methane usually refers to natural gas resources with methane as the main component in coal seams and surrounding rocks. This standard specifically refers to natural gas with methane as the main component extracted by ground.
(6) According to the national standard "coalbed methane (coal mine gas) terminology", coalbed methane is a natural gas that occurs in coal seams and is associated with coal, with methane as the main component.
(7) According to the national geological industry standard "Specification for Coalbed Methane Resources/Reserves", coalbed methane refers to hydrocarbon gases in coal seams with methane as the main component, adsorbed on the surface of coal matrix particles and partially free in coal pores or dissolved in coal seam water.

3. Similarities and differences between coal mine gas and coalbed methane
Similarities: 
The main components of both are methane, which mainly comes from coal seams and surrounding rocks.
Different points:
The ingredients are different. The composition of coal mine gas is more complex, including coalbed methane components, but also includes other components, such as other gases generated in the production process.
The storage location is different. Coal mine gas is stored in the mining space, while coalbed methane is stored in coal seams or surrounding rocks. as shown in Figure 1. It can be seen from here that coal mine gas and coalbed methane are two completely different concepts. It cannot be simply understood that coalbed methane is sometimes called coal mine gas. It refers to the same thing and can be used together.

图片

 

Coal Mine Gas and Coalbed Methane

 

Coal mine gas has many hazards, the current management of coal mine gas is mainly through the extraction technology to control. In view of the general low permeability coal seam conditions in China, it is usually through the mining of protective layer, hydraulic fracturing, hydraulic cutting, hydraulic punching, controlled pre-splitting blasting, intensive drilling, gas phase fracturing and other technologies to increase permeability first, and then carry out coalbed methane extraction to control gas disasters. So what is the difference between the two concepts of coal mine gas and coalbed methane? Take a look at how the current standards define the two.

1. Coal mine gas
(1) According to the National Energy Administration's "Eleventh Five-Year Plan for the Development and Utilization of Coalbed Methane (Coal Mine Gas)" (2006), coal mine gas is a general term for harmful gases mainly methane emitted from underground coal and rock mass. The composition of coal mine gas is more complex, in addition to methane (80% ~ 90%), but also contains heavy hydrocarbons (ethane, propane), carbon dioxide, nitrogen and some rare gases, individual mines also contain hydrogen, carbon monoxide or hydrogen sulfide.
(2) The "Technical Specification for Coalbed Methane Resources Exploration" defines coal mine gas, referred to as gas, refers to the natural gas that flows into the mine roadway and working face from the coal seam and its surrounding rock during the coal mine mining process, mainly composed of methane, sometimes referred to as methane alone.
(3) The national standard "Guidelines for the Utilization of Coalbed Methane (Coal Mine Gas)" defines coal mine gas as: refers to the natural gas that flows into the mining space from the coal seam and surrounding rock during the coal mining process or is extracted through pipelines.
(4) the national standard "coalbed methane (coal mine gas) terminology" defines the mine gas: in the mine, from the coal and surrounding rock in the escape of methane-based gas mixture.
(5) "Coal Mine Safety Regulations" (2016) defines gas as follows: gas is a harmful gas mainly composed of coalbed methane in mines. Sometimes referred to as methane alone.

2. CBM
(1) According to the National Energy Administration's "Eleventh Five-Year Plan for the Development and Utilization of Coalbed Methane (Coal Mine Gas)" (2006), coalbed methane is a hydrocarbon gas that exists in coal seams with methane as the main component, adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water.
(2) According to the Ministry of Finance and the State Administration of Taxation "Notice on Tax Policy Issues Concerning Accelerating Coalbed Methane Extraction" (Caishui [2007] No. 16), coalbed methane refers to the occurrence of coal seams and surrounding rocks associated with coal resources Unconventional natural gas, also known as coal mine gas.
(3) according to the national standard "coalbed methane (coal mine gas) emission standards (provisional)", coalbed methane refers to the existence of coal seam with methane as the main component, to be adsorbed on the surface of the coal matrix particles, part of the free in the coal pores or dissolved in the coal seam water of the hydrocarbon gas.
(4) According to the Technical Specification for Exploration of Coalbed Methane Resources, coalbed methane occurs in coal seams, with methane as the main component, mainly adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water.
(5) According to the national standard "Guidelines for the Utilization of Coalbed Methane (Coal Mine Gas)", coalbed methane usually refers to natural gas resources with methane as the main component in coal seams and surrounding rocks. This standard specifically refers to natural gas with methane as the main component extracted by ground.
(6) According to the national standard "coalbed methane (coal mine gas) terminology", coalbed methane is a natural gas that occurs in coal seams and is associated with coal, with methane as the main component.
(7) According to the national geological industry standard "Specification for Coalbed Methane Resources/Reserves", coalbed methane refers to hydrocarbon gases in coal seams with methane as the main component, adsorbed on the surface of coal matrix particles and partially free in coal pores or dissolved in coal seam water.

3. Similarities and differences between coal mine gas and coalbed methane
Similarities: 
The main components of both are methane, which mainly comes from coal seams and surrounding rocks.
Different points:
The ingredients are different. The composition of coal mine gas is more complex, including coalbed methane components, but also includes other components, such as other gases generated in the production process.
The storage location is different. Coal mine gas is stored in the mining space, while coalbed methane is stored in coal seams or surrounding rocks. as shown in Figure 1. It can be seen from here that coal mine gas and coalbed methane are two completely different concepts. It cannot be simply understood that coalbed methane is sometimes called coal mine gas. It refers to the same thing and can be used together.

图片

 












Key words:

Coalbed methane, gas, coal mine, coal seam, methane, gas, main component, surrounding rock, main

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