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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

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2023

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Vol. 68, no. 2

285--299

EN

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.

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Research of Aggregatic Stability and Bactericidal Activities of Nanosilver Colloidal Solutions

Yushchishina Anna, Pasichnyk Maria, Mitryasova Olena, Koszelnik Piotr, Gruca-Rokosz Renata, Kida Małgorzata

Rocznik Ochrona Środowiska

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2020

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Tom 22, cz. 1

40--50

EN

The influence of SAS of different chemical nature on aggregate stability and bactericidal action of nano silver colloidal solutions is investigated. Colloidal solutions of silver were obtained by restoring the argentum nitrate agent in a neutral medium. With the help of spectrophotometric method, it has been proved that such solutions are characterized by high aggregate stability compared with the use of other traditional reducing agents. Anionic SAS (sodium dodecylsulfate and sulfanol) and nonionic SAS (OS-20) increase aggregate stability of nano silver solutions, while cationogenic SAS − alcamone promotes rapid coagulation and aggregation of nano silver particles. The study of bactericidal action of the solutions to the E.coli are showed that the nano silve colloidal solution with or without presence of OS-20 and alcamone completely inhibit the growth of colonies of E.coli, that is, it’s have high bactericidal properties.

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Surfactants in Klodnica river (Katowice, Poland). Part II. Quaternary ammonium compounds

Ruman M., Olkowska E., Pytel S., Polkowska Ż.

Ecological Chemistry and Engineering. S

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2018

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Vol. 25, nr 2

229--242

EN

The paper presents methods of determination of analytes of the cation group (alkyl benzyl dimethyl ammonium (BDDA-C12-C16), alkyl trimethyl ammonium (TMA), hexadecyl piridinium (HP)) in surface water and bottom sediment samples. In the sample preparation phase the solid phase extraction (SPE) or accelerated solvent extraction/ultrasound assisted extraction (ASE/UAE)-SPE technique was used and in the identification phase and quantitative determination of analytes phase - ion chromatography technique (combined with a conductivity detector (CD)). The determined concentrations were in the range below the determined method detection limit (MDL) or method quantification limit (MQL) figures up to 0.142 ±0.023 mg/dm3 or 2014 ±10 μg/kg (liquid and solid samples, respectively). Comparing concentrations of individual analytes found in liquid and solid environmental samples we may notice that surfactants containing a shorter alkyl chain in their molecules were found in higher concentrations in liquid samples (hydrophobicity increasing with the chain length).

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Surfactants in Klodnica river (Katowice, Poland). Part I. Linear alkylbenzene sulphonates (LAS)

Ruman M., Olkowska E., Drąg-Śmigalska M., Jankowski G., Polkowska Ż.

Ecological Chemistry and Engineering. S

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2017

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Vol. 24, nr 1

53--63

EN

Surfactants are a group of compounds with specific physico-chemical properties and therefore they are used in many spheres of human activity. Surface-active substances undergo various physico-chemical transformations, what enables their migration between different elements of the environment and may lead to its pollution. Selected anionic surfactants were determined in samples of water from the Klodnica river (25 samples) and bottom sediments (25 samples). In most samples the presence of anionic analytes was confirmed. The determined concentration levels were in the range of up to 0.2105±0.0023 mg/dm3 or 0.207±0.010 μg/kg (surface water and bottom sediment samples, respectively). Comparing the concentrations of certain analytes found in liquid and solid environmental samples, it can be noticed that the surfactants containing a shorter alkyl chain in a molecule were present in higher concentrations in liquid samples (hydrophobicity increasing with the increasing length of the chain) and the other way round.

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Wpływ substancji powierzchniowo aktywnych na właściwości powierzchniowe ciekłej miedzi

Siwiec G., Willner J.

Rudy i Metale Nieżelazne

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2007

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R. 52, nr 6

322-325

PL

Przedstawiono podstawowe informacje dotyczące substancji powierzchniowo aktywnych w ciekłych metalach i ich możliwego wpływu na przebieg wysokotemperaturowych procesów metalurgicznych oraz omówiono pojęcia nadmiaru powierzchniowego i aktywności powierzchniowej wykorzystywane do charakterystyki układów typu ciekły metal-pierwiastek powierzchniowo aktywny. Dokonano również analizy wpływu wybranych substancji powierzchniowo aktywnych (tlenu, siarki, selenu, telluru, ołowiu, antymonu) na właściwości powierzchniowe ciekłej miedzi

EN

In the paper, the basic knowledge regarding surface-active substances in liquid metals has been presented. The changes in surface tensions of liquid metals (caused by these substances) and their possible effect on the course of high-temperature metallurgical processes have also been described. Surface tension affects the size of interfacial area, and the area is one of the factors determining the rate of running processes. Surface-active substances showing the tendency to accumulate at the liquid metal-gas interface can also increase the rates of metallurgical processes by generating local eddies, which is connected with the areas of different surface tension values creating on the surface. They can also cause the interface blocking which decreases the rate of the processes currently running on the interface or even stop them. Besides, the concepts of surface excess and surface activity used for the description of liquid metal-surface active element systems have been presented. Also, the influence of certain surface-active substances (oxygen, sulphur, selenium, tellurium, lead and antimony) on surface properties of liquid copper has been analysed. It has been stated that the strongest influence is shown in Cu-S and Cu-O systems where even a very small amount of sulphur and oxygen, respectively, cause a significant decrease in the values of liquid copper surface tension. Selenium, tellurium lead and antimony have a weaker influence, nevertheless they also show the properties of surface-active substances.

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Związki powierzchniowo czynne metody otrzymywania, charakterystyka i zastosowanie

Adamczak M., Mentzen W., Bednarski W.

Przemysł Spożywczy

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1999

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T. 53, nr 3

22-24

PL

W artykule opisano metody syntezy oraz zastosowanie naturalnych związków powierzchniowo czynnych. Monoacyloglicerole są emulgatorami szeroko stosowanymi w przemyśle spożywczym. Produkowane są one na skalę przemysłową metodą glicerolizy chemicznej tłuszczów i olejów w wysokiej temperaturze z wykorzystaniem zasadowych katalizatorów nieorganicznych. W ostatniej dekadzie podejmowano wiele prób enzymatycznej syntezy monoacylogliceroli. Należą do nich hydroliza, estryfikacja kwasów tłuszczowych lub transestryfikacja oraz gliceroliza tłuszczów i olejów. Istnieją możliwości otrzymania mieszaniny mono- i diacylogliceroli drogą mikrobiologicznej degradacji tłuszczów odpadowych. Enzymatycznie otrzymane estry cukrowe kwasów tłuszczowych są szeroko stosowane jako detergenty przemysłowe w różnorodnych produktach żywnościowych.

EN

The article reviews shortly methods of synthesis and application of different kinds of natural surface-active substances. Monoacyloglycerols (monoglycerides) are the most widely used emulsifieres in the food industry. Monoacyloglycerols are manufactured on an industrial scale by chemical glycerolysis of fats and oils at high temperature employing inorganic alkaline catalyst. In the last decade, many approaches have been investigated in the enzymatic synthesis of monoacylglycerols. These are selective hydrolysis, estrification of fatty acids or transestrification, and glycerolysis of fats and oils. There are some possibilities to obtain mixture of mono- and diacyloglicerols by microbial degradation of waste fats. Sugar fatty acid esters are widely used as industrial detergents and as emulsifiers in a variety of food formulations.