Study on Flow Model and Flow Equation of Shale Gas Based on Microflow Mechanism

Table 1

Results of experimental analysis for shale coupled flow.

Core no.	Length (cm)	Porosity (%)	Inlet pressure (MPa)	Flow rate (mL/s)	Conventional model		Coupled model
					Permeability (μD)	Diffusion coefficient (mm^2/s)	Permeability (μD)	Diffusion coefficient (mm^2/s)
404	3.21	2.40	1.29	0.0117	1.69	2.7	1.15	1.73
			1.93	0.0253	1.63	3.8
			2.93	0.0562	1.57	5.5
			3.98	0.0991	1.50	7.0
			5.12	0.1575	1.44	8.7
			7.02	0.2835	1.38	11.3
			8.63	0.4147	1.33	13.4
428	2.59	2.60	1.17	0.232	40.9	55.2	27.2	19.0
			1.37	0.301	38.6	60.4
			1.71	0.451	37.1	71.4
			2.16	0.684	35.2	84.5
			2.62	0.968	33.8	97.9
			3.12	1.327	32.7	111.9
			3.60	1.722	31.9	125.3
			4.54	2.706	31.5	155.3
			5.10	3.316	30.6	169.0