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Coal Bed Methane
Consider the following statements with reference to the Coal Bed Methane (CBM):
- 1.Coal bed methane is considered an unconventional gas as it is held tightly in reservoirs and it requires special stimulation and technologies to produce it economically
- 2.CBM can be recovered from underground coal before, during, or after mining operations.
A |
Only 1
|
|
B |
Only 2
|
|
C |
Both 1 and 2
|
|
D |
Neither 1 nor 2
|
Your Ans is
Right ans is C
Your Answer Is Correct
Your Answer Is Wrong
Explanation :
- Coal Bed Methane (CBM), also known as Coal Seam Gas, is an unconventional form of natural gas found in coal deposits or coal seams.
- It is formed during the process of coalification, the transformation of plant material into coal.
Composition
- 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).
Extraction
- CBM can be recovered from underground coal before, during, or after mining operations.
- It can also be extracted from “unminable” coal seams that are relatively deep, thin or of poor or inconsistent quality.
- Vertical and horizontal wells are used to develop CBM resources.
- Extraction requires drilling wells into the coal seams and removing water contained in the seam to reduce hydrostatic pressure and release absorbed (and free) gas out of the coal.
Applications
- Power Generation: CBM has become increasingly used as a source of energy .It can be used in place of natural gas in gas turbines for power generation.
- Manufacturing: CBM can also be used as a feedstock for manufacturing fertilizers and plastics.
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