Vovk R. The system of intelligible decisions support to prevent unscheduled situations during wells drilling

Dissertation is devoted to development of method for technological errors control, as a base feature for intelligible system for preventing of unscheduled situations arising in the process of drilling for oil and gas wells based on the analysis of the structure for decision taking support on the set of imposed technological constraints. Based on the analysis of typical routines for technological decision taking support the formal approach for technological problems modeling by means of constraints based modeling and constraints satisfaction problem formalisms is presented, what is used as main idea for developing of the system for intelligible decisions support based on constraints. The developed formal constructions for classification of technological constraints allows controlling the flow of technological problems for current process and making it possible to select on the general set possibly unscheduled situations, what constitutes the common base for support of technological decision making under the conditions of incomplete, imprecise, uncertain and fuzzy information about the technological process. The general structure, algorithms and software for the system of intelligible decisions support based on the constraints for preventing of unscheduled situations in the drilling of oil and gas wells were proposed and implemented.