SELECTION OF RATIONAL PARAMETERS FOR OPENING AND DRILLING OF TECHNOLOGICAL WELLS UNDERGROUND URANIUM LEACHING
Kenzhetaev Z.S. Kuandykov T.A. Togizov K.S. Abdraimova M.R. Nurbekova М.A.
2022National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2022#2022Issue 3115 - 127 pp.
The object of research is the technology of opening and development of wells of underground uranium leaching. The purpose of the work is to increase the efficiency of borehole uranium mining by developing rational drilling parameters and developing the near– well zone of the formation, depending on the hydrogeological characteristics of the productive horizon. At the same time, a reduction in the time for drilling and development of wells is achieved, an increase in labor productivity, technological equipment, as well as a reduction in material costs for restoration work. The research methods include the development and justification of effective parameters for the opening of productive formations by the rotational method of drilling with backwash, depending on the properties of ores and characteristics of washing solutions at the uranium deposit of the Shu-Sarysu depression. The parameters of development are selected and discussed depending on the hydrogeological characteristics of productive formations for the preparation of geotechnological wells for operation. The results of the research are the study of processes during the construction and development of geotechnological wells, the reasons for the decrease in filtration characteristics of ores of the productive horizon. The effective parameters of the opening of productive layers of underground uranium leaching with the use of a special drilling method have been calculated, which exclude the clogging of the productive horizon with drilling fluids at the stage of well construction. The possibility of reducing the time for borehole penetration and development by eliminating the impact of drilling mud and drilling products on the aquifer productive horizon is discussed. A method of selecting the depth of the pressure sleeve depending on the hydrogeological characteristics of the ores of the deposit has been developed. The scientific novelty is expressed in the justification of the effective parameters of the opening and development of productive formations using rotary drilling with backwash, depending on the hydrogeological characteristics of ores. The practical significance of the study lies in the high efficiency and applicability of the considered method of opening and developing the productive horizon in the construction of technological wells in areas with a high content of clay minerals and low filtration characteristics.
airlift , colmatation , development , drilling mud , face , sinking , uranium , well construction
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Satbayev University, Almaty, Kazakhstan
Kazakh National Women’s Teacher Training University, Almaty, Kazakhstan
Satbayev University
Kazakh National Women’s Teacher Training University
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