Method for recovering methane from coal seams
Patent
·
OSTI ID:5711131
Methane is recovered from an underground coal seam via a borehole which extends from the earth's surface through the overburden to a cavity that is in, partly in or proximate to the coal seam. The cavity is constructed and arranged to be collapsible. Coal from the coal seam moves toward the coal seam under the influence of triaxial compression converting adsorbed methane to free form methane that is recovered.
- Assignee:
- Algas Resources Ltd (Canada)
- Patent Number(s):
- US 4305464
- OSTI ID:
- 5711131
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010500* -- Coal
Lignite
& Peat-- Products & By-Products
03 NATURAL GAS
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
ALKANES
BOREHOLES
BY-PRODUCTS
CARBONACEOUS MATERIALS
CAVITIES
COAL
COAL DEPOSITS
COAL MINING
COAL SEAMS
COMPRESSION
DEGASSING
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
HYDROCARBONS
MATERIALS
METHANE
MINERAL RESOURCES
MINING
ORGANIC COMPOUNDS
PRESSURIZING
RECOVERY
RESOURCES
010500* -- Coal
Lignite
& Peat-- Products & By-Products
03 NATURAL GAS
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
ALKANES
BOREHOLES
BY-PRODUCTS
CARBONACEOUS MATERIALS
CAVITIES
COAL
COAL DEPOSITS
COAL MINING
COAL SEAMS
COMPRESSION
DEGASSING
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
HYDROCARBONS
MATERIALS
METHANE
MINERAL RESOURCES
MINING
ORGANIC COMPOUNDS
PRESSURIZING
RECOVERY
RESOURCES