Method and device for polycrystalline diamond compact bit (PDC) drilling parameter multi-objective optimization

The invention relates to a method for polycrystalline diamond compact bit (PDC) drilling parameter multi-objective optimization and a device for the PDC bit drilling parameter multi-objective optimization. The method includes the steps: constructing a multi-objective function of the PDC bit drilling parameter optimization; determining a constraint condition of the multi-objective function of the PDC bit drilling parameter optimization, and according to the constraint condition, establishing a PDC bit drilling parameter multi-objective optimization model; and according to the PDC bit drilling parameter multi-objective optimization model, establishing a PDC bit drilling parameter so as to achieve the PDC bit drilling parameter multi-objective optimization. The established PDC bit drilling parameter multi-objective optimization model and a genetic optimization algorithm can conduct drilling parameter optimization according to intention of a decision maker and various specific constraint conditions, and the method has large flexibility and wide practicality.