Table 6. Properties of Core Plugs Used for the Formation Damage Test.

no.	core plug ID	length (cm)	diameter(cm)	dry weight (g)	grin density (g/mL)	helium porosity	air permeability (md)
1	GB 2-1	7.54	3.78	178.4	2.65	20.66%	187.9
2	GB 2-2	7.54	3.78	178.2	2.65	20.63%	195.3
3	GB 1-3	7.57	3.76	176.1	2.64	21.02%	225.1
4	GB 2-3	7.39	3.76	173.0	2.64	20.44%	191.3
5	GB 4-3	7.26	3.78	170.6	2.64	21.01%	201.7
6	GB 3-3	7.49	3.78	175.7	2.64	20.39%	208.3
7	GB 1-2	7.44	3.78	174.8	2.65	21.40%	216.3
8	GB 3-1	7.59	3.78	179.3	2.66	20.85%	216.3
9	GB 1-4	7.57	3.81	185.5	2.63	18.37%	159.8
10	GB 3-4	7.21	3.81	177.9	2.65	18.40%	144.8
11	GB 4-4	7.39	3.81	181.8	2.65	18.41%	144.4
12	GB 2-4	7.24	3.81	177.3	2.64	19.76%	160.2
13	GB 1-5	7.50	3.83	182.1	2.65	20.36%	174.4
14	GB 9-5	7.54	3.76	177.8	2.65	19.91%	152.5
15	GB 10-5	7.47	3.76	176.1	2.66	20.15%	156.3
16	GB 12-5	7.50	3.76	176.7	2.64	19.70%	175.4