Optimal Selection Method for Sweet Spots in Low-Permeability Multilayered Reservoirs

Table 2

Classification criteria for reservoir “ sweet spot” indicators.

Reservoir classification	Reservoir stratification factor	Energy storage coefficient	Stratigraphic coefficient
	()	(/m)	(/mD·m)
Class I	>0.63	>1.16	>181
Class II
Class III	<0.50	<0.74	<85