Table 3: Partial correlation analysis results of the main factors.

Depth Thickness Clay content Reservoir Pressure Porosity Young’S Modulus TOC Thermal Maturity Adsorbed Gas Water Saturation Horizontal Length Frac Density Frac Half Length Frac Conductivity BHP 1st Year
Decline Rate
Depth 1.000
Thickness 0.192 1.000
Clay content -0.147 -0.091 1.000
Reservoir Pressure 0.367 -0.117 -0.383 1.000
Porosity -0.067 -0.362 0.013 -0.007 1.000
Young’S Modulus 0.099 0.618 -0.107 0.170 -0.344 1.000
TOC -0.518 -0.360 -0.289 -0.327 0.428 -0.219 1.000
Thermal Maturity 0.041 -0.033 0.297 0.034 -0.373 0.010 -0.422 1.000
Adsorbed Gas -0.541 0.088 0.201 -0.057 -0.321 0.219 0.021 0.024 1.000
Water Saturation -0.582 0.390 -0.281 -0.284 0.114 0.148 0.561 -0.343 0.242 1.000
Horizontal Length 0.570 0.505 -0.021 0.154 -0.384 0.093 -0.745 0.172 -0.401 -0.312 1.000
Fracturing Density 0.416 -0.351 0.105 0.271 0.058 -0.208 0.155 -0.066 -0.384 -0.340 -0.083 1.000
Frac Half Length -0.338 -0.422 0.566 -0.448 0.298 -0.644 0.197 0.339 -0.159 -0.072 -0.134 0.141 1.000
Frac Conductivity -0.071 -0.158 0.555 0.030 -0.139 -0.408 -0.458 0.681 0.138 -0.258 0.220 -0.052 0.619 1.000
BHP 0.266 -0.396 -0.280 0.888 0.242 0.017 -0.023 -0.072 -0.168 -0.326 -0.093 0.519 -0.181 -0.045 1.00
1st Year Decline Rate -0.118 0.103 -0.317 0.178 -0.047 -0.362 0.026 -0.384 0.058 0.201 0.175 0.019 -0.095 -0.115 0.115 1.00

Note: The matrix permeability is taken as the control variable in the SPSS correlation analysis.