Specialists of Dnipro University of Technology are among the leading researchers involved in studying the specifics of implementation and functioning of rational and energy-efficient schemes of organization of circulation processes while well drilling and operating. In particular, we have carried out thorough and comprehensive studies of physicochemical phenomena used while creating, preparing, and using the washing fluids. The purpose of the paper is to study and generalize the approaches to designing the parameters of hydraulic well washing programme under complicated geological and technical conditions, analysis of the factors of its correction basing on substantiation of analytical and research regularities of well circulation processes, and optimization of a component and quantitative composition of drill cleaning agents, which are aimed at the most efficient intensification of the bottomhole breaking processes. The development and implementation of a progressive complex hydraulic washing programme for wells under construction are analyzed involving modern methods of analytical analysis and experimental studies. The drilling circulation processes in a well were modelled in terms of experimental wells involving a drill rig UKB-4P and corresponding auxiliary tools and equipment.

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The article deals with the problems of field development characterized by deterioration of the structure and an increase in the share of hard-to-recover and residual oil reserves, including with the use of advancedtechnologies to increase oil recovery and intensification of oil production.

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