Applications of Artificial Intelligence for Static Poisson’s Ratio Prediction While Drilling

Table 3

Statistics of the obtained dataset.

Parameter	WOB (klbm)	T (klbf.ft)	SPP (psi)	RPM	ROP (ft/hr)	Q (gal/min)	νst
Minimum	1.54	4.55	2140.20	77.94	27.41	697.31	0.17
Maximum	25.48	10.68	3075.56	162.49	119.57	854.01	0.43
Mean	15.39	7.83	2634.51	138.62	76.39	803.07	0.25
Mode	1.54	4.55	2140.20	77.94	27.41	697.31	0.17
Median	16.27	8.25	2685.02	139.15	79.90	809.77	0.20
Standard deviation	6.44	1.65	205.33	11.08	19.15	48.38	0.08
Skewness	-0.37	-0.37	-0.78	-1.98	-0.55	-1.19	0.50
Kurtosis	2.15	1.91	2.53	10.81	2.41	3.17	1.39