Fine Depicting of Seepage Barrier for Gas Flooding in the Lower Wuerhe Formation Reservoir of the 8^th District in China

Table 7

Experimental results of gas injection sealability evaluation at the top of the cubic composite core.

Combination number	Porosity (%)	Permeability (mD)	Breakthrough pressure (MPa)	Breakthrough time
Combination 1	6.8	0.002385	27.26	98’ 39”
Combination 2	7.1	0.001565	43.54	143’ 00”
Combination 3	5.6	0.002204	37.7	90’ 00”
Combination 4	7.1	0.001191	22.49	101’ 01”