Дан анализ состояния техники и технологии крепления скважин. Отмечены основные недостатки существующих приемов крепления ствола скважины. Обоснован гидродинамический способ удаления глинисто-шламовых паст. Приведены положения теории работы проектируемого устройства для обработки кавернозных зон. ДЕЯКІ ОСОБЛИВОСТІ РОБОТИ ПРИСТРОЮ ПО ПІДГОТОВЦІ СВЕРДЛОВИНИ ДО КРІПЛЕННЯ Наведено аналіз стану техніки і технології кріплення свердловин. Зазначено основні недоліки існуючих прийомів кріплення стовбура свердловини. Обґрунтовано гідродинамічний спосіб видалення глинисто-шламових паст. Наведено положення теорії роботи проектованого пристрою для обробки кавернозних зон. ОБ АВТОРАХ Давиденко Александр Николаевич -д.т.н., заведующий кафедрой техники разведки месторождений полезных ископаемых Национального горного университета. Игнатов Андрей Александрович -старший преподаватель кафедры техники разведки месторождений полезных ископаемых Национального горного университета.

Purpose. To substantiate the design and operating technological parameters of the device for the interval bore hole cleaning departing from the set dependences of active jets formation in the flow through the blade element.Methods. Application of bench and analytical research techniques allowed to establish the fundamental principles of active jets formation in the flow through the blade element of the designed device and the nature of their impact on the processed objects.Findings. Bench testing of the device for the interval bore hole cleaning resulted in defining aspects of the mechanism of active fluid jets formation. We studied the distribution of speed components in the workflow. The use of tilted surface for the formation of the blade profile has been justified. As a result of studying the physical model of the device working body, we received data regarding its structural design. Information about the peculiar hydrodynamics of the flow around the blade node with respect to the process of removing clay-mud agglomerates has been provided. The indicators of the effectiveness of the designed device were designated.Originality. The steady flow through the blade element and consequently the removal of clay-mud agglomerates is provided by well-defined structural design characteristics which determine hydrodynamic aspects of the unit operation. Practical implications.The results of laboratory and analytical studies are the base for designing the operating parameters of the process of preparing a bore hole for casing running and subsequent plugging of the bore hole with a guaranteed provision of high technical and economic indicators. Data for the study of the flow mode through the blade element are the basis for the hydrodynamic calculation of the device for the interval cleaning.

Purpose. Increasing the technical and economic indicators of well mechanohydraulic production due to the selection of the type and optimal formulation of drilling flushing fluids. In today's conditions, the lack of energy carriers requires involving a wider range of natural phenomena in energy production, looking for reliable ways and methods of increasing the efficiency of production. The use of energy also forces the introduction of resource-saving, environmentally safe geotechnologies in the energy-intensive technological processes of mining, transportation, crushing and beneficiation of minerals in the conditions of powerful mining enterprises of Ukraine. The methods. The study of the features of the creation and implementation of a progressive complex hydraulic program for the construction of wells was carried out using modern methods of analytical analysis and experimental research, in particular by using general principles of mathematical and physical modeling, methods of processing research results in the environment of МАТHCAD, control and measuring devices and materials. Findings. Development and operational implementation of justified resource-saving ecologically safe geotechnologies and environmental protection strategies. Flushing fluid treated with direct current can be used to increase the technical and economic indicators of the well drilling process. The originality. Dependencies have been established that describe the process of formation under the influence of a rock-destructive tool of individual rock particles that are exposed to the action of the boundary layer, and others that fall into the zone of action of the laminar sublayer. A dependency has been established that describes the process of leaving parts of the sludge that are not carried away by the flow of washing liquid, which, in turn, leads to its further grinding and increased wear of the rock-crushing tool. Practical implementation. Data were obtained on the adsorption reduction of hardness, which is a consequence of the increase in the affinity of the collapsing rock to the washing liquid. This is reflected in the intensive binding of water (hydrate) shells on the inner surface of microcracks or in their mouths. The parameters for improving the efficiency of iron ore extraction in the conditions of deposits of Ukraine are given and substantiated, in particular, a careful approach to the process of regulating the pH level of cleaning agents, taking into account the geological and technical conditions of drilling operations and the intended purpose of wells

No abstract

The monograph is devoted to issues of the digital encyclopedic practice in view of experience of contemporary socio-humanities. This book presents the history of the emergence and spread of electronic encyclopedias in Ukraine and worldwide, clarifies their features, traces the correlations of electronic and paper encyclopedias. A special place in the monograph is given to the common description of the Internet version of the Encyclopedia of Modern Ukraine as well as current national online encyclopedias abroad.