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Tytuł:
Water well activation with application of clay minerals disintegration agent
Autorzy:
Macuda, J.
Wysocki, S.
Gaczoł, M.
Powiązania:
https://bibliotekanauki.pl/articles/298707.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
formation permeability
formation clogging
disintegration of clay minerals
well
well activation
well efficiency
well exploitation
well life expectancy
Opis:
While drilling a well using rotary drilling method with drilling mud application, permeability damage of aquifer layers in near-well zone takes place. It is caused mainly by inflow of both solid phase and filtrate originated from the mud into pores or fractures of drilled rock. In consequence of this phenomenon, pressure drawdown increase and well hydraulic efficiency decrease can be observed, what leads to exploitation capacity diminution. For the reparation of formation damaged permeability in near-well zone, new agent for disintegration of clay minerals called SKINAUT was developed at the Drilling, Oil and Gas Faculty of AGH-UST Krakow. In order to confirm its effectiveness in industrial conditions, it was conducted test of well activation for water intake from loose formation. Applied agent allowed to counteract the clogging of pore spaces and to reduce the hydraulic resistance of well thereby decreasing pressure drawdown and considerably improving well efficiency.
Źródło:
AGH Drilling, Oil, Gas; 2017, 34, 2; 587-595
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlation between Level of Personal Well-being and Spirituality
Autorzy:
Danylchenko, Tetiana
Powiązania:
https://bibliotekanauki.pl/articles/628429.pdf
Data publikacji:
2020
Wydawca:
Fundacja Pro Scientia Publica
Tematy:
personal well-being, spirituality, psychological well-being, subjective well-being, subjective social well-being
Opis:
Aim: The aim of this paper is to define the correlation between experiencing personal well-being and manifestations of spirituality of an individual.  Methods: The study involved the citizens of Chernihiv (average age – 33.2 years old): 96 people in total, 40 men and 56 women. The following methods were used: a) to measure the components of personal well-being – Satisfaction with Life scale by E. Diener, Psychological well-being scale by С. Riff, Questionnaire of parameters of subjective social well-being by T. Danylchenko; b) to measure the spiritual component – EPU Plus (Egoism - Personal Uniqueness) by L. Z. Levit, Methodology of measuring social interaction (mentality aspect) by G. L. Voronin. Results: The source of experiencing personal well-being is positive health (physical abilities, absence of physical limitations). Factors that decrease personal well-being are low level of tolerance and the pursuit of pleasure. Personal well-being is ensured by belief about collaboration and experiencing positive health as a state of readiness for activity. Psychological well-being has a negative correlation with basic egoism (the pursuit of pleasure) and a positive one with social egoism (ability to comply one’s needs with the group interests, following social rules and norms). Subjective social well-being relates to the highest egoism (unique self-realization, realization of existing potential in an acceptable way). The orientation towards achieving personal or public goals determines the peculiarities of experiencing well-being in the eudaemonic and hedonistic dimensions.
Źródło:
Journal of Education Culture and Society; 2020, 11, 2; 267-280
2081-1640
Pojawia się w:
Journal of Education Culture and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Validity and Utility of Global Measures of Subjective Well-Being
Autorzy:
Pavot, William
Powiązania:
https://bibliotekanauki.pl/articles/430327.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
subjective well-being
psychological well-being
Opis:
Research interest in topics such as happiness, the quality of life, and the experience of well-being has dramatically increased in the past four decades. Global measures of Subjective Well-Being (SWB) have long held a prominent position in this burgeoning body of research (Diener, 1984; Pavot, 2008). Despite their widespread acceptance and use, the validity and utility of global measures of SWB have been challenged at several levels of analysis. These critiques have ranged from the conceptual basis of SWB (e.g. Ryan & Deci 2001; Ryff, 1989; Ryff & Singer, 2008) to very specifi c concerns about the context of the assessment situation and the cognitive processes involved in formulating a response to such measures (Pavot & Diener, 1993a; Schimmack & Oishi, 2005; Schwarz, & Strack, 1999). The purpose of this paper is to review and address some of the more prominent critiques of global measures of SWB, and to discuss methodological procedures and strategies for minimizing threats to the validity and increasing the utility of global measures of SWB.
Źródło:
Polish Psychological Bulletin; 2013, 44, 2; 50-58
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-efficacy and psychological well-being of teachers
Autorzy:
Lipińska-Grobelny, Agnieszka
Narska, Marta
Powiązania:
https://bibliotekanauki.pl/articles/1367593.pdf
Data publikacji:
2021-07
Wydawca:
Szkoła Główna Handlowa w Warszawie
Tematy:
self-efficacy
psychological well-being
hedonic well-being
eudaimonic well-being
teachers
Opis:
Introduction: The aim of the presented research was to check whether there is a connection between teachers’ self-efficacy and their psychological well-being from a holistic (hedonic and eudaimonic) perspective. Method: The study involved 100 teachers who were asked to fill in the following research tools with proven psychometric properties: the General Self-Efficacy Scale, the Satisfaction with Life Scale, the Positive and Negative Affect Schedule, and the Psychological Well-being Scale. Results: The obtained data confirm that there is a connection between self-efficacy belief, and hedonic and eudaimonic well-being. The degree of professional promotion grades modifies the relationships considered. Conclusions: The psychological well-being of teachers is significantly associated with their evaluation of efficacy, which may have a positive impact on the effectiveness of teachers’ professional functioning and the achievements of their students.
Źródło:
e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie; 2021, 90, 3; 4-10
1731-6758
1731-7428
Pojawia się w:
e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Many years’ extraction of groundwater in the context of established usable groundwater reserves
Autorzy:
Macuda, J.
Styrkowiec, E.
Powiązania:
https://bibliotekanauki.pl/articles/298693.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
well
intake well
usable reserves
establishing reserves
life of well
water extraction
groundwater reserves
test pumping
well construction
Opis:
The operation of water supply networks basically relies on the ability of supply water, which in the case of groundwater intakes, is defined by usable reserves offered by the wells involved. Their establishing is the last stage of an investment, i.e. building of groundwater intakes, and their value determines the type of infrastructure and technological hardware in the wells. Owing to the fact that the usable groundwater reserves are conditioned by a number of factors (economic, technological, environmental) their correct determining depends on the correct definition of the number and quality of measurements and hydrogeological observations. In practice, these measurements tend to be shortened to minimum (test pumping) or discarded (diagnostics of well construction) for financial reasons. As a result the user obtains either over- or underestimated information about the intake parameters. Exploitation of a well with overestimated capacity brings about serious technological and economic consequences, starting from the lowered productivity (drop of water table, lower yield), change of chemical composition of water, sanding up of the well as well as well failures and damage. The use of a well with underrated output does not shorten the life of the well, though is disadvantageous for the economic reasons. The productivity of wells can be verified after a few years of controlled extraction, on the basis of which the cost of water extraction, stability of chemical composition or impact on other intakes in given work conditions. Accordingly, this is a basis for updating usable groundwater reserves of the wells. Moreover, after many years of observation of groundwater intakes, one can formulate recommendations warrantying long life of wells, rational management of pump aggregates and well renovation plans.
Źródło:
AGH Drilling, Oil, Gas; 2017, 34, 2; 419-427
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected aspects of the design and construction of reinforced concrete sunk wells
Wybrane zagadnienia dotyczące projektowania i wykonywania żelbetowych studni opuszczanych
Autorzy:
Szymczak-Graczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/28765900.pdf
Data publikacji:
2022
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
well
concrete well
sunk well
reinforced concrete
cutting edge
cylindrical tank
rectangular tank
Źródło:
Acta Scientiarum Polonorum. Architectura; 2022, 21, 3; 43-54
1644-0633
Pojawia się w:
Acta Scientiarum Polonorum. Architectura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selection of effective chemical compounds for drilled wells
Autorzy:
Macuda, J.
Klima, K.
Powiązania:
https://bibliotekanauki.pl/articles/299014.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
hydrochemistry
water well
well screen
rehabilitation of wells
regeneration of wells
well clogging
Opis:
Drilled wells during their operation are subject to so-called “aging” processes, which is visible in the decrease of their efficiency and increase in depression. The process, especially in case of quaternary and tertiary waters, is most affected by the chemical colmatation of the filter and filter-adjacent zone with chemical compounds precipitated from the flowing water. The literature analysis shows that ferrous sediments are the main mass of sediments clogging the quaternary and tertiary water intakes. They are usually in the form of soft reddish-colored sediments, and their essential element is Fe2O3 and FeO. Iron, siderite and quartz hydroxides were also found. The degree of colmatation in such wells can be significantly reduced by frequent renovations with chemical methods. The article presents results of laboratory tests on dissolution of sediments clogging withdrawal well filters with sodium dithionite (Na2S2O4) and sodium pyrosulphite (Na2S2O5). Representative samples were taken from selected quaternary water intakes in northern Poland.
Źródło:
AGH Drilling, Oil, Gas; 2018, 35, 1; 181-186
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Holistic measurement of well-being: psychometric properties of the physical, mental and social well-being scale (PMSW-21) for adults
Autorzy:
Supranowicz, P.
Paz, M.
Powiązania:
https://bibliotekanauki.pl/articles/873055.pdf
Data publikacji:
2014
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
human health
holistic measurement
well-being
psychometric property
validity
physical well-being
mental well-being
social well-being
adult
Opis:
Background. A holistic approach to health requires the development of tools that would allow to measure the inner world of individuals within its physical, mental and social dimensions. Objectives. To create the Physical, Mental and Social Well-being scale (PMSW-21) that allows a holistic representation of various dimensions of well-being in such a way as they are perceived by the individuals and how affected their health. Material and methods. The study was conducted on the sample of 406 inhabitants of Warsaw involving in the Social Participation in Health Reform project. The PMSW-21 scale included: headache, tiredness, abdominal pain, palpitation, joint pain, backache, sleep disturbance (physical domain), anxiety, guiltiness, helplessness, hopelessness, sadness, self-dissatisfaction, hostility (mental domain), security, communicability, protection, loneliness, rejection, sociability and appreciation (social domain). The five criterial variables of health and seven of life experiences were adopted to assess the discriminative power of the PMSW-21 scale. Results. The total well-being scale as well as its physical, mental and social domains showed high reliability (Cronbach a 0.81, 0.77, 0.90, 0.72, respectively). The analysis confirmed the construct validity. All the items stronger correlated with their own domain than with the others (ranges for physical: 0.41 – 0.55, mental: 0.49 – 0.80 and social: 0.31 – 0.50). The total scale demonstrate high sensitivity; it significantly differentiated almost all criterial variables. Physical domain showed high sensitivity for health as well as for negative life events variables, while the mental and social domains were more sensitive for life events. Conclusions. The analysis confirmed the usefulness of PMSW-21 scale for measure the holistic well-being. The reliability of the total scale and its domains, construct validity and sensitivity for health and life determinants were at acceptable level.
Wprowadzenie. Holistyczne podejście do zdrowia wymaga stworzenia narzędzia, które umożliwiłoby mierzenie wewnętrznego świata jednostki w jego fizycznym, psychicznym i społecznym wymiarze. Cel. Opracowanie skali Fizycznego, Psychicznego i Społecznego Samopoczucie (PMSW-21), która umożliwi przedstawienie w sposób całościowy różnych wymiarów samopoczucia w taki sposób, jak są one postrzegane przez jednostki i jak wpływają na ich zdrowie. Materiał i metody. Badania przeprowadzono na próbie 406 mieszkańców Warszawy biorących udział w projekcie Partycypacja Społeczna w Reformowaniu Zdrowia. Skala PMSW-21 obejmowała: ból głowy, przemęczenie, ból brzucha, kołatanie serca, ból stawów, ból pleców, trudności w zasypianiu (domena fizyczna), niepokój, poczucie winy, bezradność, beznadziejność, smutek, niezadowolenie z siebie, wrogość (domena psychiczna), bezpieczeństwo, komunikatywność, ochronę, samotność, wykluczenie, towarzyskość i szacunek (domena społeczna). Do oceny mocy dyskryminacyjnej skali PMSW-21 przyjęto pięć zmiennych kryterialnych dotyczące zdrowia i siedem dotyczących doświadczeń życiowych. Wyniki. Zarówno całkowita skala, jak i jej domeny fizyczna psychiczna i społeczna wykazały wysoką rzetelność (Cronbach a odpowiednio 0.80, 0.77, 0.90, 0.72). Analiza potwierdziła trafność konstruktu. Wszystkie pozycje silniej korelowały z własną domeną niż z pozostałymi (zakresy dla fizycznej: 0.41 – 0.55, psychicznej: 0.49 – 0.80 i społecznej: 0.31 – 0.50). Całkowita skala wykazała wysoką czułość, znacząco różnicowała niemal wszystkie zmienne kryterialne. Domena fizyczna wykazała wysoką czułość zarówno w przypadku zmiennych kryterialnych dotyczących zdrowia jak i negatywnych zdarzeń życiowych, natomiast domeny psychiczna i społeczna były bardziej czułe w przypadku zdarzeń życiowych. Wnioski. Analiza potwierdziła użyteczność skali PMSW-21 do całościowego mierzenia samopoczucia. Rzetelność skali całkowitej i jej domen, trafność konstruktu oraz czułość w odniesieniu do uwarunkowań zdrowotnych i życiowych była na akceptowalnym poziomie.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2014, 65, 3
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlation between the individual’s experience of well-being and social evaluation
Autorzy:
Danylchenko, Tetiana
Powiązania:
https://bibliotekanauki.pl/articles/1878451.pdf
Data publikacji:
2021-09-25
Wydawca:
Fundacja Pro Scientia Publica
Tematy:
psychological well-being
subjective well-being
subjective social well-being
social evaluation
approval
deprecation
Opis:
The aim of this paper is to define the correlation between social evaluation and personal well-being.  Methods. The study involved the citizens of Chernihiv (average age – 31.5 years old): 91 people in total, 37 men and 54 women. The following methods were used: the scale of satisfaction with life scale by Diener, as adapted by Leontiev and Osin (2008); questionnaire of parameters of subjective social well-being by Danylchenko (2015); subjective life satisfaction scale by Lybyna (2008), questionnaire on the peculiarities of evaluation by other people by Danylchenko (2019). Results and conclusion. In Ukrainian society, the most important reference groups are parents and a spouse, while friends and colleagues play a comparatively smaller role. All these groups are more likely to give positive and neutral social evaluations. However, negative evaluations are more likely to come from colleagues and friends, and positive – from family. There are differences in indicators of subjective well-being, social acceptance (as a measure of social well-being) and competence between people who are assessed predominantly positively and predominantly negatively. Subjective well-being is reduced reproaches from reference groups. Praise contributes to the enhancement of subjective social well-being Comparison with other people and the existence of a role model reduces psychological well-being. The filter for the perception of positive and negative evaluations from the social environment is a person’s self-acceptance.  
Źródło:
Journal of Education Culture and Society; 2021, 12, 2; 179-189
2081-1640
Pojawia się w:
Journal of Education Culture and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
(C3, C4, C5, C7)-Free Almost Well-Dominated Graphs
Autorzy:
Alizadeh, Hadi
Gözüpek, Didem
Ekinci, Gülnaz Boruzanlı
Powiązania:
https://bibliotekanauki.pl/articles/32387984.pdf
Data publikacji:
2022-11-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
well-dominated graphs
almost well-dominated graphs
domination gap
Opis:
The domination gap of a graph G is defined as the di erence between the maximum and minimum cardinalities of a minimal dominating set in G. The term well-dominated graphs referring to the graphs with domination gap zero, was first introduced by Finbow et al. [Well-dominated graphs: A collection of well-covered ones, Ars Combin. 25 (1988) 5–10]. In this paper, we focus on the graphs with domination gap one which we term almost well-dominated graphs. While the results by Finbow et al. have implications for almost well-dominated graphs with girth at least 8, we extend these results to (C3, C4, C5, C7)-free almost well-dominated graphs by giving a complete structural characterization for such graphs.
Źródło:
Discussiones Mathematicae Graph Theory; 2022, 42, 4; 1099-1117
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A hybrid version of well-being: An attempt at operationalisation
Autorzy:
Kwarciński, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/904249.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Ekonomiczny w Krakowie, Małopolska Szkoła Administracji Publicznej
Tematy:
well-being
hybrid well-being
capability approach
autonomy
adaptation
Opis:
Objectives: This paper aims to investigate the possibility of constructing a hybrid version of well-being and making an attempt at its operationalisation. Research Design & Methods: The theoretical framework is based on the capability approach of Amartya Sen and Martha Nussbaum, while the empirical part of the paper refers to a fuzzy set theory. Findings: We propose three measures of hybrid well-being, referring to (1) the minimum formula, (2) a mobility index, and (3) the concept of internalities. Implications / Recommendations: We are convinced that it is not only possible to create a philosophically informed measure of well-being, but also that this kind of measure can be crucial in the context of public policy due to its sensitivity to autonomy and adaptation problems. Contribution / Value Added: Findings of this research can be seen as an attempt to merge philosophical investigation with economics theories and applications.
Źródło:
Zarządzanie Publiczne / Public Governance; 2018, 4(46); 30-49
1898-3529
2658-1116
Pojawia się w:
Zarządzanie Publiczne / Public Governance
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Values and well-being – how are individual values associated with subjective and eudaimonic well-being?
Autorzy:
Bojanowska, Agnieszka
Czerw, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/2129876.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
values
hedonic well-being
eudaimonic well-being
individual wealth
Opis:
Schwartz created a circle of values reflecting people’s individual systems of goals and motivations. These values can be grouped into different dimensions: self-protection versus self-growth and concentration on others versus concentration on self. In the present study, we analysed how these dimensions are related to hedonic and eudaimonic well-being; N=747 participants, representative of the general Polish population, completed the Portraits Value Questionnaire, Satisfaction with Life Scale and Questionnaire for Eudaimonic Well-being (online study). A series of models were tested using structural equation modelling. We found that concern for self and self-protection values were related to higher hedonic well-being, whereas concern for others and growth values were related to its lower levels. However, growth and concern for others were positively linked to eudaimonic well-being, but they may also positively and indirectly impact hedonic well-being (suppression effect). These results suggest that some values are associated with a feeling of self-realisation at the cost of current hedonic well-being.
Źródło:
Polish Psychological Bulletin; 2020, 51, 2; 162-169
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deconstructing materialism – towards a better understanding of its connections with well-being
Autorzy:
Górnik-Durose, Małgorzata Ewa
Powiązania:
https://bibliotekanauki.pl/articles/2129708.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
well-being
materialism
Opis:
According to the most popular conceptualization of materialism by Richins and Dawson it consists of three components: acquisition centrality, acquisition as the pursuit of happiness and possession -defined success. They are usually combined and an overall indicator of materialism is used commonly in various studies. In the article the three components are examined separately. Differences in their nature are revealed in a theoretical analysis, whereas in two empirical studies the ways they connect with well -being are presented. The results show that the overall materialism explains much less variance of well -being than the three components taken separately. Of the three the possession-defined happiness is the most detrimental to all aspects of well -being. The possession-defined success does not connect with well -being at all. Finally, acquisition centrality elevates hedonic and psychological well -being. The conclusion is that the modest effect of materialism on well -being, usually identified in various studies, is probably at least partly due to conflicting forces existing within the construct.
Źródło:
Polish Psychological Bulletin; 2019, 50, 2; 174-183
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of low frequency vibrations on drillstring dynamics
Autorzy:
Chernova, M, YE
Powiązania:
https://bibliotekanauki.pl/articles/299143.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
drilling
well
vibrations
Opis:
During the drilling process, between the drilling bit that ruins the rock in the bottom-hole and the energy source located on the ground surface is the drillstring that has certain length and small cross cuts that define the dynamics of the drilling bit work. Along with the development of science, for optimization of drilling processes were developed and continue to be elaborated mathematical models that use empirical dependencies based mainly on laboratory data which are very far away from the real conditions of well construction and fail to take into account all the peculiarities of this process. Thus, the management of the drillstring dynamics related to an increase in the effectiveness of deep directional and horizontal wells drilling process through the minimization of torsional and longitudinal Iow frequency vibrations of drilling instrument is a matter of topical interest nowadays.
Źródło:
AGH Drilling, Oil, Gas; 2014, 31, 3; 423-430
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drilling large diameter water wells in carbonate strata in the Lublin area
Autorzy:
Macuda, J.
Macuda, M.
Powiązania:
https://bibliotekanauki.pl/articles/298629.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
well
water well
hydrogeological well
drilling technology
reverse circulation
drilling technology parameters
cogged bit
drillability test
Opis:
One of the most important sources of water for communal purposes in the Lublin area are the useful groundwater aquifers intaken with deep drilled wells. Such wells should be highly efficient and localized in a close vicinity of the local water supply network to lower the cost of transport. Large amounts of water can be produced by large diameter wells, where heavy duty pump aggregates can be installed. High rates of penetration cannot be obtained if the profile abounds in hardly drillable carbonate. This elongates the time of drilling and increases negative impact of mud on the near well zone of the aquifer. It also lowers hydraulic parameters of the well. To improve the efficiency of the wells, drillability tests with cogged bits were performed in carbonate rocks to optimize the mechanical parameters of drilling. Measurement sections, each 0.3 to 0.5 m long, were selected for the tests. Each section was drilled at constant rotational speed and weight of bit values. Prior to the drillability tests, the limits on the weight of bit and rotational speed of the bit were established, in line with the technological characteristic of rig Wirth B3A, strength of the string and of the cogged bit.
Źródło:
AGH Drilling, Oil, Gas; 2018, 35, 1; 31-39
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 710

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