http://nextbigfuture.com/2009/10/what-i ... e-gas.html
$this->bbcode_second_pass_quote('', '1'). Reality – it takes many years for a very tight (low permeability) gas reservoirs to exhibit exponential decline behavior. Thus, hyperbolic decline can and should be used to approximate/extrapolate EUR’s
2. Type Curves work.
3. High Terminal Decline Rate is wrong. Need 10-20 years of Barnett history (oldest Shale play) to be certain but current results show lower decline than the 15% of skeptics











