Impact of Petrophysical Properties on Hydraulic Fracturing and Development in Tight Volcanic Gas Reservoirs

Table 2

Results of XRD mineralogy analyses.

Samples	L1	L2	L3	L4	L5	L6	L7	L8	L9	L10	L11	L12	L13	L14	L15	L16
Length	11.35	20.46	10.93	10.05	25.69	12.49	13.60	19.89	50.61	53.24	51.34	50.01	50.79	50.69	50.36	50.87
Type of analysis					Bulk & clay
Weight%	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100
Quartz	45.2	44	55.8	44.3	41.1	53.7	13.2	43.5	44.2	36.1	51.3	33.5	45.1	39.8	42.5	36.8
Potassium feldspar	4.9	4.7	3.9	1.9	6.4	2.3	1.9	3.1	1.2	1.3	3.4	1.4	2.8	3.3	1.8	16
Plagioclase feldspar	15.6	18.9	22.4	16.2	9.5	32.7	10	7.1	16	9	12.3	7.7	16.9	12.7	16.8	20.0
Calcite	0	0	3.7	0	0	1.4	0	0	0	0	0	0	0	0	0	1.6
Pyrite	0	1.2	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Total clay	34.3	31.2	14.2	37.6	43	9.9	74.9	46.3	38.6	53.6	33	57.4	35.2	44.2	38.9	40.0