Numerical Simulation and Sensitivity Analysis of Hydraulic Fracturing in Multilayered Thin Tight Sandstone Gas Reservoir

Table 2

The mean value and variation range of the geological parameters in different layer types.

	Thickness (m)			Poisson’s ratio			Elastic modulus (GPa)			Geostress (MPa)
	Mean	Max	Min	Mean	Max	Min	Mean	Max	Min	Mean	Max	Min
Layer type 1	27.6	33.3	22.5	0.21	0.22	0.2	52.05	53.18	50.88	28.34	29.44	27.68
Layer type 2	44.7	57.6	36.4	0.28	0.29	0.27	43.89	46.05	40.25	31.92	32.93	31.2
Layer type 3	38	63.7	9.3	0.29	0.31	0.27	38.56	45.39	26.54	32.26	35.92	27.92
Layer type 4	19.2	46.1	5.8	0.22	0.28	0.16	49.59	59.57	42.14	27.89	32.7	25.55
Layer type 5	13	18.9	5.7	0.37	0.41	0.35	6.92	9.69	4.91	37.57	42.96	31.55
Layer type 6	31.6	52.1	13.8	0.3	0.33	0.27	38.3	50.8	28.23	33.29	35.19	30.42
Layer type 7	15.2	37.2	5.8	0.2	0.24	0.15	53.68	60.61	47.5	28.19	30.37	24.91
Layer type 8	33.3	48.8	21.1	0.3	0.32	0.26	71.45	79.8	47.09	33.74	36.61	29.5