Abstract: Drilling data including a plurality of values measured for each of a plurality of drilling parameters is received. An objective function that maximizes production of a material produced by a production operation, minimizes water usage by the production operation, and minimizes a sub-cool temperature of the material is determined using the received drilling data. An association rule that defines a range of values for a control parameter of the plurality of drilling parameters that is selected based on a value of a first parameter of the plurality of drilling parameters is determined using the received drilling data. Measured drilling data that indicates current control parameter values of the production operation is received. An optimal value for the control parameter is determined by executing the determined objective function with the received, measured drilling data as an input and subject to the determined association rule. The determined optimal value is output.