Filipchuk O. Development of methods for increasing the gas streams’ efficiency and management of gas collection systems at depleted deposits

The thesis is devoted to the development of methods for increasing the gas streams' efficiency and management of gas collection systems at depleted fields, on the example of the gas extraction system belonging to the largest gas extraction company in Ukraine. Mathematical models of the gas gathering system were set in terms of “deposit - main gas pipeline”, on the basis of which the hydraulic efficiency influence of the elements for gas collection system and inter-industrial gas transportation on the productivity of the depleted deposit was analyzed. The influence of each of the elements of the system on the wells flow rate was established, in particular, it was shown that the efficiency of tubing pipes has the greatest influence. The study of the annual coefficient dynamics of hydraulic efficiency of the system was performed. The effect of changes in ambient temperature on the coefficient of hydraulic efficiency was estimated. New designs of purification devices were developed and tested. The nature of purification devices movement in well tubing and industrial gas pipelines was established on the basis of the set mathematical model. A method for predicting the parameters for their mode of operation to achieve high-quality cleaning from liquid and solid deposits in the pipeline was proposed.