Impact of Geological Factors on Marine Shale Gas Enrichment and Reserve Estimation: A Case Study of Jiaoshiba Area in Fuling Gas Field

Table 1

Five factors and three levels orthogonal table.

Shale density	TOC	Porosity	Gas saturation	Shale gas volume coefficient
-1	-1	-1	-1	-1
0	0	0	0	0
1	1	1	1	1