Prosiding/Procceding
Southeast asian coal geology conference
Coalbedmethane is increasingly playing a major role as a gas resource in the United States, Presently, about eight percent of the total annual natural gas produced in the United States is coalbed methane (fig. I). Coalbed methane was originally thought to be economicallyproduced only from high-rank coal. However,with the advent of economic coalbed methane production from thick low-rank coal in the Powder River Basin in Wyoming and Montana, it is worthwhile to consider developing gas from such coal in other coal-bearing basins of the world.
Conventional wisdom suggests that low-rank or subbituminous coal does not generate significant amounts or methane during coalification at low temperature and pressure. However, subbituminous coal may generate biogenic methane by microbial activity during early and late stages of coalification. The new coalbed methane play in the Powder River Basin has proven that low-rank coal can store biogenic methane by sorption at the molecular level and as closely-packedmolecules in fractures and micropores of the coal. However, methane is released by water drawdown from the coal bed; thus, gas production is balanced against abundant co-produced water, which was generated during coalification and introduced by groundwater systems at a late stage of burial. Comparison of volumes of co-produced water (average barrel of water/day/well) from methane development fields in the United States shows about a tenfold increase in such water from bituminous to subbituminous coal (table I). More significantly, the co-produced water/methane ratio (barrel/met) is one hudred times greater in subbitunimousthan in bituminous coal (see table I).
Conventional wisdom suggests that low-rank or subbituminous coal does not generate significant amounts or methane during coalification at low temperature and pressure. However, subbituminous coal may generate biogenic methane by microbial activity during early and late stages of coalification. The new coalbed methane play in the Powder River Basin has proven that low-rank coal can store biogenic methane by sorption at the molecular level and as closely-packedmolecules in fractures and micropores of the coal. However, methane is released by water drawdown from the coal bed; thus, gas production is balanced against abundant co-produced water, which was generated during coalification and introduced by groundwater systems at a late stage of burial. Comparison of volumes of co-produced water (average barrel of water/day/well) from methane development fields in the United States shows about a tenfold increase in such water from bituminous to subbituminous coal (table I). More significantly, the co-produced water/methane ratio (barrel/met) is one hudred times greater in subbitunimousthan in bituminous coal (see table I).
Ketersediaan
Tidak ada salinan data
Informasi Detail
- Judul Seri
-
-
- No. Panggil
-
PMB 01 - 2000 Prosiding
- Penerbit
- Bandung : Directorate of Mineral Resources on Association with Indonesia Assocition of Geologist., 2000
- Deskripsi Fisik
-
343 p. : ill. ; 21 cm
- Bahasa
-
English
- ISBN/ISSN
-
979-8126-03-3
- Klasifikasi
-
553.24 NTO s
- Tipe Isi
-
-
- Tipe Media
-
-
- Tipe Pembawa
-
-
- Edisi
-
-
- Subjek
- Info Detail Spesifik
-
-
- Pernyataan Tanggungjawab
-
Directorate of Mineral Resources on Association with Indonesia Assocition of Geologist
Versi lain/terkait
Tidak tersedia versi lain
Lampiran Berkas
Tidak Ada Data
Karya Umum 
Filsafat 
Agama 
Ilmu-ilmu Sosial 
Bahasa 
Ilmu-ilmu Murni 
Ilmu-ilmu Terapan 
Kesenian, Hiburan, dan Olahraga 
Kesusastraan 
Geografi dan Sejarah