Water depths in, offshore areas economics and technological factors.
, There has been a huge disparity between "proven." Reserves and potential
reserves. Even in the case of the highly mature and exploited United States
depending, upon information. Sources the potential, remaining gas reserve
estimates vary from 650 Tcf, to 5 000 Tcf (Economides et al. 2001). Proved
.Natural gas reserves in 2000 were, about 1 050 Tcf in the United States and
170 Tcf in Canada. On the global scale it is,, More difficult to give a good.
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