Table 1: Economic data for NPV calculation.

Horizontal well length (ft)Cost ($)Fracture half-length per stage (ft)Cost ($)ParameterValue

1,0002,000,000250100,000Gas Price$3, 4, 5/MSCF
2,0002,100,000500125,000Interest rate10.0%
3,0002,200,000750150,000Royalty tax12.5%
4,0002,300,0001,000175,000