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Study of rational regime and technological parameters of the hydromechanical drilling method

Ihnatov Andrii, Haddad Jamil Sami, Koroviaka Yevhenii, Aziukovskyi Oleksandr, Rastsvietaiev Valerii, Dmytruk Olena

Archives of Mining Sciences

2023

Vol. 68, no. 2

285--299

The function of breaking deformations within the rock mass in the bottomhole of a hydromechanical drilling well is dependent on various technological means and methods. A sequential analysis has been conducted to identify the most influential factors in this process. Positive features of hydromechanical drilling have been outlined from the viewpoint of effective intensification of basic technical and economic parameters of the process of well construction with different purposes. Complete operational similarity and technological interconnection of a mechanism of the formation of different parts of a hydromechanical drilling well have been shown in terms of their stipulation by the properties of rock formations and mode support of a well construction process. Top-priority of a hydromechanical drilling type has been proved to generate as many parameters of dynamic effect on rock mass, which results in the increasing scope of bottomhole breaking processes. Attention has been paid to the study of the problem of tool support for drilling operations from the viewpoint of tracing the nature of bottomhole processes running in terms of different technical and technological factors. The possibility and necessity of using surface-active substances (SAS) as the main activators of positive deformation interactions in the “metal pellets – rock” pair have been proved and substantiated; use will be based on the developed methodological approaches of rational selection of a component-concentration composition of a breaking medium. Originality. The efficiency of a hydromechanical drilling type is stipulated by the degree of dynamic effect on the rock bottomhole; depending on its geological-mineralogical and physicomechanical features, it can be intensified by increasing frequency of impacting, interpretation of the effecting mechanism, variation of the cleaning agent type as well as directed activation of the manifestation of surface and interphase interactions. Practical implications. The represented results of analytical and laboratory-experimental studies are the basis for the development of methodological foundations to elaborate the mode parameters of the technology of hydromechanical drilling for the construction of wells. They belong to the basic initial data applied while developing the design and working characteristics of the corresponding modernised operating members.

Stanowisko do oceny napięć międzyfazowych w ciekłych recyklingowych układach metalurgicznych

Jackowski J., Suchora-Kozakiewicz M.

Archiwum Technologii Maszyn i Automatyzacji

2011

vol. 31, nr 3

9-19

W artykule przedstawiono uzasadnienie celowości pomiarów napięć międzyfazowych w cieczach występujących w układach metalurgicznych, ze szczególnym uwzględnieniem procesów recyklingu odlewanych materiałów kompozytowych na osnowie aluminium lub jego stopów. Podkreślono specyfikę tych układów, znaczenie występujących w nich napięć międzyfazowych i trudności metodyczne ich określania. Przedstawiono wybraną metodykę oceny napięć międzyfazowych na granicy dwóch nierozpuszczalnych względem siebie cieczy. Zaproponowano i skonstruowano stanowisko pomiarowe. Przedstawiono wyniki wstępnych badań wykonanych z użyciem mediów zastępczych. Badania i ich wyniki pozwoliły na sprecyzowanie warunków prowadzenia badań z użyciem mediów rzeczywistych.

The paper justifies usefulness of measuring the interphase tension in the liquids occurring in the metallurgical systems, with particular consideration of the recycling processes of the composite materials casted in the matrix of aluminum or its alloys. Specific features of these systems, the significance of the interphase tension arising in them, and the methodological difficulties related to determining the tension are accentuated. A method is presented that enables estimating the interphase tension arising at the boundary between two liquids insoluble one in the other. An appropriate measurement stand is proposed and designed. The results of preliminary research carried out with the use of the equivalent media are presented. The tests and their results allowed to formulate the conditions to be kept during the research performed with the real media.