Long-term implications of new U.S. gas estimates |
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Authors: | E D Attanasi J W Schmoker |
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Institution: | (1) U.S. Geological Survey, Denver Federal Center, MS 939, Box 25046, 80225 Denver, Colorado;(2) U.S. Geolog-ical Survey, National Center Mail Stop 956, 20192 Reston, Virginia |
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Abstract: | The US Geological Survey’s 1995 estimates of domestic undiscovered plus undeveloped natural gas nearly tripled quantities
estimated in its 1989 Assessment. Much of the increase came from selected unconventional resources assessed using the paradigm
of continuous-type accumulations. These include such seemingly unrelated “unconventional” gas occurrences as “tight gas,”
coalbed gas, gas in shales, and deep basin-center gas. Though only a small fraction of the assessed 352 trillion cubic feet
is now economic, the quantity is nevertheless significant. Moreover, the lowest cost resources are close to major gas markets
where competing conventional gas is modest. With continued technological improvements these resources can contribute significantly
to future U.S. gas supply, even without subsidies |
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Keywords: | Unconventional gas coalbed gas continuous-type accumulations assessment |
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