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- W2287836583 abstract "Consolidated Gas Supply Corp. is involved in the commercial application of research gained by the U.S. Bureau of Mines on producing commercial quantities of pipeline-quality natural gas through degasification of coal beds (see Gas Abstr. 30: 74-0100). On Jan. 28, 1974, methane gas derived from a West Virginia coal bed owned by Eastern Associated Coal Corp. began to flow into a Consolidated Gas pipeline at the rate of 600,000 CF/day. The gas exited the coal bed through a 6-ft-diam hole drilled using a large-scale adaptation of the vertical-borehole technique. Costs of this experimental project are offset by increased coal production, reduced cost of mine ventilation, and marketing of the methane gas. Only 400 ft of 4-in. line was needed to tie in the borehole with a nearby pipeline; however, a small compressor had to be installed to sustain a feasible rate of flow and make the gas conform to line pressure conditions. Consolidated and Eastern are now engaged in negotiating a gas purchase contract and planning facilities for a 2nd degasification project involving an 18-ft-diam shaft about 2 mi away. The gas now being vented from this shaft exceeds 965,000 CF/day. More such projects are in the offing. In fact,more » the Bureau is actively seeking to enter into a cost-sharing agreement for a large-scale demonstration of the technique--a demonstration to be in operation 2-3 yr prior to mining and to involve a specially engineered pattern of mine shafts with overlapping degas capability on 1-10 thousand acres of coal land.« less" @default.
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- W2287836583 date "1974-06-01" @default.
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- W2287836583 title "Mining for methane" @default.
- W2287836583 hasPublicationYear "1974" @default.
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