Electromagnetic coal seam gas recovery system
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United States of America Patent
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-
Jun 6, 2006
Grant Date -
Apr 22, 2004
app pub date -
Dec 18, 2001
filing date -
Dec 18, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system for recovering gas trapped within the earth includes a casing (24) sized and configured to be positioned within a borehole in the earth, the casing (24) formed of a material that is transmissive to electromagnetic energy and gas within the earth; an antenna (40) sized and configured to be positioned within the casing (24). The antenna (40) has a distal end and a proximal end and including a radiating element at the distal end of the antenna (40) which, in operation, transmits electromagnetic energy toward a desired area of the earth, and an interior channel for allowing gas to be conveyed from the distal end to the proximal end of the antenna (40).
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