Humeniuk T. Optimal control of the process of deepening oil and gas wells in uncertainty

The thesis is devoted to developing methods for determining technological conditions for a rig based on the theory of artificial neural networks to automatically determine the duration of the round-lifting operations in the current flight, identification of a process of deepening wells considering fuzziness of operational parameters, determining the optimal control actions for rotary method of drilling according to the criterion of the value of a meter of driving well in the face of uncertainty. Based on the analysis of the current state of the problem of optimal control of the process of deepening wells found that the topical area of research is the development of methods, algorithms and software for automated control systems of the process of deepening wells considering fuzziness of operational parameters of the process of deepening wells and fuzziness of duration of launching gear operations. The method was developed for determination of technical operations of rig, based on artificial neural network Hamming, which enables the operator to carry out monitoring of drilling operations, and automatically determine the duration of the round-lifting operations for the current voyage. The method of synthesis of optimal complexity of empirical models was developed based on genetic algorithms that take into account the lack of clarity in operational parameters. The developed mathematical models are the basis for optimum process control algorithms of deepening wells. The method of optimal control of the process of deepening wells under uncertainty was developed. The feature of this method is that it is based on a mathematical model developed at the stage of identifying and the fact that the duration of the round-lifting operations are unclear value is taken into account. To implement methods obtained in industrial conditions algorithms and software were developed for the following tasks: determination of technical operations of rig; synthesis of models taking into account the complexity of the optimal operational parameters fuzziness; optimization of the process of deepening wells under uncertainty. The developed software tested in industrial data made it possible to determine its efficiency and effectiveness. The synthesized automated process management system of deepening wells was developed based on block diagram of the developed control system, software and program integrator, which made it possible to it use as a basic element of the complex SKUB-M2.