Optimization of Multiple Hydraulically Fractured Horizontal Wells in Unconventional Gas Reservoirs

Table 5

Uncertainty parameters in this study.

Parameters	Coded symbol	Minimum (−1)	Maximum (+1)	Unit
Porosity	A	0.04	0.08	fraction
Permeability	B	0.00005	0.0005	md
Fracture half-length	C	200	400	ft
Fracture conductivity	D	1	50	md-ft
Fracture spacing	E	40	100	ft
Well distance	F	500	1000	ft