TY - JOUR
T1 - GAS FLOW AROUND A BOREHOLE IN A COAL BED AND ITS APPROXIMATE EXPRESSIONS. 2ND REPORT
T2 - THE CASE OF A BOREHOLE WITHIN A BOUNDED RECTANGULAR AREA.
AU - Gotoh, Ken
AU - Itoi, Ryuichi
AU - Omuta, Hidefumi
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1984
Y1 - 1984
N2 - This paper deals with the problem of gas drainage by a borehole within a bounded rectangular area under consideration of absorbed methane gas. The gas pressure distribution at dimensionless time, T, which is calculated by the Finite Element Method, shows the combined pattern of radial flow near the borehole and linear flow in the outer area. The approximate expression method by use of the gas pressure gradient function is useful enough for the rectangular area problem like for the circular area problem shown in the first report.
AB - This paper deals with the problem of gas drainage by a borehole within a bounded rectangular area under consideration of absorbed methane gas. The gas pressure distribution at dimensionless time, T, which is calculated by the Finite Element Method, shows the combined pattern of radial flow near the borehole and linear flow in the outer area. The approximate expression method by use of the gas pressure gradient function is useful enough for the rectangular area problem like for the circular area problem shown in the first report.
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U2 - 10.2473/shigentosozai1953.100.1162_1119
DO - 10.2473/shigentosozai1953.100.1162_1119
M3 - Article
AN - SCOPUS:0021548133
SN - 0369-4194
VL - 100
SP - 1119
EP - 1125
JO - Nihon Kogyokaishi
JF - Nihon Kogyokaishi
IS - 1162
ER -