Quantitative Prediction of Low-Permeability Sandstone Grain Size Based on Conventional Logging Data by Deep Neural Network-Based BP Algorithm

Table 6

AC, CNL, DEN, and GR ranges in well X2.

Curve name		AC	CNL	DEN	GR
Unit		μs/ft	v/v	k/m^3	api
	Main interval	66.18-91.52	0.061-0.237	2.47-2.60	83.86-116.28
	Mean	76.89	0.148	2.54	101.81