Drilling Parameter Optimization of Shale Gas Wells Based on Saw-Tooth Genetic Algorithm to Reduce Drilling Costs

Table 2

Comparison of simulation results.

Algorithms	Cost per unit length ()/(yuan⋅m^-1)	WOB/kN	Revolutions per minute/(r⋅min^-1)	The rate of convergence
GA	81.43	323.34	60	160
IAGA	85.50	340.00	62	100
Saw-tooth GA	79.80	305.00	85	70