What is the difference between coal bed methane and coal seam gas?

What is the difference between coal bed methane and coal seam gas?

Although CMM is similar to CBM in that it is a subset of the methane found in coal seams, it refers specifically to the methane found within mining areas (e.g., within a mining plan), while CBM refers to methane in coal seams that will never be mined.

What do you mean by coal bed methane?

Coal bed methane (CBM) is an unconventional form of natural gas found in coal deposits or coal seams. It is a primary clean energy source of natural gas. The development and utilization of CBM is of great social and economic benefit.

Is coal a methane bed?

The composition of CBM in a sample of coal varies widely across several locations in the country. Generally, it consists predominantly of methane gas (CH4) although it can contain trace amounts of ethane (C2H6), carbon dioxide (CO2) and water (H2O).

What is methane mining?

Coal mine methane (CMM) refers to methane released from the coal and surrounding rock strata due to mining activities. In underground mines it can create an explosive hazard to coal miners so it is removed through ventilation systems.

What is coal bed methane India?

Coalbed Methane (CBM), an unconventional source of natural gas is now considered as an alternative source for augmenting India’s energy resource. India has the fifth largest proven coal reserves in the world and thus holds significant prospects for exploration and exploitation of CBM.

What are the uses of coal bed methane?

What are the uses of CBM? According to the Central Mine Planning and Design Institute (CMPDI), CBM can be used for power generation, as compressed natural gas (CNG) auto fuel, as feedstock for fertilisers, industrial uses such as in cement production, rolling mills, steel plants, and for methanol production.

What causes methane in coal mines?

Methane is released as a direct result of the physical process of coal extraction. Coal is extracted through mining which in turn releases methane previously trapped within the coal seam into the air supply of the mine as layers of the coal face are removed, thus creating a potential safety hazard.

What is the source of methane in coal mines?

Introduction. Methane is the primary constituent of natural gas and is stored within coal as a result of the coalification process whereby plant material is converted to coal. Due to coal mining activities (and subsequent pressure decrease in coal seams), methane is released from the coal and surrounding strata.