Temat: hole - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Drilling bits in percussive-rotary drilling technology (down the hole DTH)
Autorzy:: Śliwa, T.
Śnieżek, P.
Powiązania:: https://bibliotekanauki.pl/articles/298928.pdf
Data publikacji:: 2012
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: drillbits
down-the-hole (DTH) drilling
Opis:: This paper addresses the issue of drillbits for drilling normal and large diameter boreholes with the use of percussion-rotary method. The most important elements of drillbits, i.e. sintered carbide inserts of different shapes have been described. The hardness of the drilled rock determines the shape of used sintered carbide inserts and the shape of the drillbit face. The cluster hammers, used for drilling large diameter DTH, have been also presented.
Źródło:: AGH Drilling, Oil, Gas; 2012, 29, 4; 453-462
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Drilling intake wells in carbonate formations to provide water for drilling purposes
Autorzy:: Macuda, Jan
Łukańko, Łukasz
Powiązania:: https://bibliotekanauki.pl/articles/2052213.pdf
Data publikacji:: 2020
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: well drilling
percussion‑rotary drilling
down‑the‑hole hammer
drilling technology
wellbore structures
Opis:: The realization of drilling works oriented towards the prospection and extraction of hydrocarbons from conventional and unconventional resources requires the supply of large amounts of water for technological purposes and fracturing jobs in shale formations. One of the important sources of water supply for wellbores may be useful groundwater levels taken in by deep wells. Technological processes accompanying drilling works and other technological operations require large amounts of water in a short period of time. The possibility of drilling intake wells at the drilling site significantly reduces the costs of acquiring the necessary quantities of water and facilitates its transfer to technological installations. Such wells must have high yields. Accordingly, this necessitates drilling wells with a relatively large diameter to accommodate filters with a large active surface area, a considerably thick gravel pack, and a high‑capacity pumping unit. Drilling large diameter intake wells in difficult geological conditions using the rotary percussion method with simultaneous casing is much more efficient than the water‑based rotary mud or percussion methods used to date. This paper presents principles for selecting technological parameters of drilling large diameter wells in difficult geological conditions using the percussion‑rotary method with simultaneous casing. Among the main advantages of this method (as compared to the rotary method with drilling fluid) is its high RPM and the related lower cost of the well. Eliminating water‑based drilling mud has a positive effect on the hydraulic efficiency of the well and enhancement work can be omitted in many cases.
Źródło:: AGH Drilling, Oil, Gas; 2020, 37, 1; 5-12
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Development of the Mathematical models of the integral drilling indices based on the Dimensional analysis
Autorzy:: Moisyshyn, V.
Borysevych, B.
Yytyaz, O.
Gavryliv, Y.
Powiązania:: https://bibliotekanauki.pl/articles/299197.pdf
Data publikacji:: 2014
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: axial static load on the well bottom-hole
angular speed of the drill bit rotation
mathematical model
mechanical drilling speed
average value of torque on the bit
energy intensity for the rock destruction process on the well bottom-hole
stiffness and damping of the drilling tools
Opis:: The dimensional analysis method was used to estimate the influence of the axial static load on the bottom-hole, angular speed of the drill bit rotation, stiffness, and damping of the drilling tools on the integral indices of well drilling. The mathematical models of the mechanical drilling speed, average values of torque on the bit, and energy consumption for the rock destruction process on the well bottom-hole were developed for two interlayers of the Vorotyshchenska formation with the hardness of 1440 and 2050 MPa.
Źródło:: AGH Drilling, Oil, Gas; 2014, 31, 3; 431-440
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Applicability of DST results to the evaluation of changes of geologic conditions of Rotliegend series in the Polish Lowland
Autorzy:: Dubiel, S.
Rybicki, Cz.
Zubrzycki, A.
Maruta, M.
Powiązania:: https://bibliotekanauki.pl/articles/298595.pdf
Data publikacji:: 2015
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: Rotliegend series
Aeolian sandstones
natural gas accumulations
standard Halliburton drill stem tester
bottom hole pressure
rock permeability
Drill Stem Tester (DST)
Opis:: The presented theoretical analysis and industrial examples of interpretation of DST results for the Rotliegend series in the Polish Lowland were focused on the changes of gas productivity factor and commercial value of the analyzed horizon; permeability changes of the Rotliegend series in the wellbore area; facial changes of the Rotliegend.
Źródło:: AGH Drilling, Oil, Gas; 2015, 32, 1; 77-88
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Study of the non-project operating modes of the gas pipeline transportation system
Autorzy:: Volynskyy, D.
Powiązania:: https://bibliotekanauki.pl/articles/298860.pdf
Data publikacji:: 2015
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: Rotliegend series
Aeolian sandstones
Drill Stem Tester (DST)
natural gas accumulations
standard Halliburton drill stem tester
bottom hole pressure
rock permeability
Opis:: The paper refers to the investigation of various non-project operating modes that can occur during the operation of the gas pipeline transmission system. The only method of research is mathematical modeling since the study of accidents and emergency situations in real pipeline is unacceptable. Therefore, in order to carry out the set tasks, mathematical modeling and computer simulation of the gas pipeline system and processes that can cause accidents in its work were applied. As an object of study area was taken a hypothetical gas pipeline transportation system with the possibility to research its unsteady processes arising from the sudden closing of valves, emergency gas leak, the appearance of illegal gas extraction, connecting or disconnecting of looping etc. A mathematical model of the system is based on the classical equations of unsteady gas flow, continuity and energy together with the equation of state of a real gas, which form a closed system. Boundary value problem is selected according to the operating conditions. The obtained results allow us to generalize the findings of a significant impact of location of a gas leak or its extraction for the period of its discovery and the rate of change of the gas flow mode in the pipeline.
Źródło:: AGH Drilling, Oil, Gas; 2015, 32, 2; 335-343
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Utilization of high potential geothermal energy in the Czech Republic
Autorzy:: Klempa, M.
Rado, R.
Bujok, P.
Janeckova, N.
Porzer, M.
Powiązania:: https://bibliotekanauki.pl/articles/299000.pdf
Data publikacji:: 2016
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: geothermal energy
enhancing geothermal system
deep geothermal energy
geothermal response test
drilling technology
down-the-hole drill (DTH) drilling technology
drilling tools
wellbore design
Opis:: In the Czech Republic the electrical energy and heat from geothermal energy can be generated with the use of Engineering/Enhancing Geothermal System (EGS). In this case a downhole heat exchanger is performed to a depth at which the temperature of the rock mass is at least 150–160°C or more, preferably about 200°C. Taking into account the geological conditions in the Czech Republic, such temperatures can be ob- served at about 5000–6000 m of depth. The site of a pilot project of geothermal electrical energy production was selected on the basis of the analysis of deep-seated geological structures in the Czech Republic, i.e. area of crust faults in the Ore Mountains Erzgebirge. The selected geological units consist of the Ore Mountains Fault and Central Bohemian Uplands, which are part of the Ohersky Rift Valley. Two deep research wells are planned in that area, with detailed geological, geophysical and geothermal analyses, including laboratory analyses of sampled rocks (cores).
Źródło:: AGH Drilling, Oil, Gas; 2016, 33, 1; 195-203
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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