Demchyna M. The system of intelligible decisions support for choosing of optimal drilling technique parameters by oil and gas wells drilling

The research is devoted to the development of new method for drilling technique optimal parameters choosing by oil and gas wells drilling. The proposed method is based on objective functions for calculation of usefulness for output parameters as one of main feature for creation of intelligible system for decision support which uses initiated values of utilities for generation of expert advices for operators to chose correct values of controlled parameters at the input of the system. Based on the analysis of intellectualization peculiarities of routines for optimization implementation by decision taking support by the drilling of oil and gas wells, there was defined the characteristics of criteria’s for drilling optimization and the features of intelligible system application in the process of drilling were disclosed. The abductive framework with weights was created for decision taking in the drilling, the formal structure is defined for control of decision taking support by means of intelligible system based on crispy and fuzzy logic, the formal methods is implemented for intelligible control of optimization by decision taking support based on knowledge’s about drilling process in the form of relevant rules. The base methodology for optimal decision taking in the drilling of oil and gas wells was created by means of calculating of utility values for the system output parameters. The general structure, algorithms and software for the system of intelligible decisions support based on objective functions routines for optimization of drilling parameters was created.