Page 247 - Advanced Mine Ventilation

Origin of Gases in Coal Mines 225

Table 13.8 Estimates of World Coalbed Methane Reserve

9
Estimated Coal Reserve (10 1992 Estimated 1987 Estimated
Country tons) TCF TCF
United States 3,000 388 30e41
Russia 5,000 700e5,860 118e790
China 4,000 700e875 31
Canada 300 212e2682 92
Australia 200 282e494 N.A.
Germany 300 106 2.83
India 200 35 0.7
South Africa 100 35 N.A.
Poland 100 106 0.4e1.5
Other 200 177e353 N.A.
Countries
Total gas in 30,958e33,853 275e11,296
place

Table 13.9 US Coal Basins and Coalbed Methane (CBM) Reserves

CBM Production CBM (TCF)
Coal Depth Basins (BCF/Yr) Reserves
I. Shallow (a) Powder River Basin 280 100 a
(100e1500 ft) (b) Cherokee Basin 5 20 a
(c) Illinois Basin 1 21
(d) Northern Appala- 10 61
chian Basin
II. Medium (a) Central Appalachian 94 21
depth Basin 52 21e22
(1500e3000 ft) (b) Warrior Basin 105 11
(c) Raton Basin 100 3
(d) Arkoma Basin
III. Deep (a) San Juan Basin 650 84
(þ3000 ft) (b) Uinta Basin 40 42
(c) Piceance Basin 5 84
(d) Green River Basin 20 83
b
Total 1362 571
a
Estimated from coal tonnage in the basin.
b
Does not include Alaska.