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Methane migration characteristics of the Pocahontas No. 3 coalbed. Report of investigations

Technical Report ·
OSTI ID:7096770
Methane flow and pressure gradient data taken from a mine in the Pocahontas No. 3 coalbed are compared with flow rates from lump coal obtained in laboratory experiments. From this, it is concluded that the main source of gas is the intact coalbed rather than a crushed zone near the working fact. The permeability and sorption capacity of the intact coalbed are calculated and gas emission rates are theoretically accounted for. (Author) (GRA)
Research Organization:
Bureau of Mines, Washington, DC (USA)
OSTI ID:
7096770
Report Number(s):
PB-211965; BM-RI-7649
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
011000 -- Coal
Lignite
& Peat-- Reserves
Geology
& Exploration
012000* -- Coal
Lignite
& Peat-- Mining
016000 -- Coal
Lignite
& Peat-- Health & Safety
ALKANES
COAL DEPOSITS
COAL MINES
CRYOGENIC FLUIDS
FLAMMABILITY
FLUID FLOW
FLUIDS
GAS FLOW
GEOLOGIC DEPOSITS
HYDROCARBONS
METHANE
MINES
ORGANIC COMPOUNDS
PERMEABILITY
RESOURCES