Artykuły (CN-wiertnictwo)

Permanent URI for this collectionhttps://repo.agh.edu.pl/handle/AGH/102860

Artykuły czasopisma Wiertnictwo Nafta Gaz

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Access status: Open Access ,
A concept of research into the temperature of a rock mass on the campus of VŠB-Technical University of Ostrava
(2008) Bujok, Petr; Mikundová, Pavla
Geothermal heat pumps are appropriate for retrofit or new homes, where both heating and cooling are desired. In addition to heating and cooling, geothermal heat pumps can provide domestic hot water. They can be used for virtually any home size regions in any region of the Czech Republic. The use of heat from the upper layers of the earth's crust can be a useful and efficient method of saving energy. At around 50 m below the earth's surface the ambient temperature fluctuates between around 8-12 degrees of Celsius. This heat can be used by being transferred to the surface via a loop system using a high-efficiency refrigerant type material. These systems are also typically more efficient than gas or oil-fired heating systems. They are more energy efficient than air source heat pumps because they draw heat from, or release heat to, the earth, which has constant year's temperatures round, rather than to the air. Geothermal heat pumps use relatively constant temperature of the ground or water several meters below the earth's surface as source of heating and cooling.
Access status: Open Access ,
A new methodology that surpasses current bridging theories to efficiently seal a varied pore throat distribution as found in natural reservoir formations
(2006) Vickers, Stephen; Cowie, Martin; Jones, Thomas A.; Twynam, Allan J.
This paper presents a new method (model) for predicting the most efficient way to create a particle bridge on a formation face having a wide spread of pore throat sizes. Laboratory data, based on particle bridging distributions using this new model, are shown to be an improvement over two current industry methods. The improvement using this design has been effective in the field and has resulted high productivity.
Access status: Open Access ,
About one problem of the nonisothermal filtration process
(2011) Ahmed-Zaki, Darhan Žumakanovič; Danaev, Nargozy Tursynbaevič; Muhambetžanov, Saltanbek Talapedinovič
In article the task is considered and the algorithm of numerical modeling of phase passages is developed at a nonisothermal filtration with selection of conditions of formation and phase downwards the transitive zone for a plainly-parallel case.
Access status: Open Access ,
About the issue of determination of solid rocks position in the coal bed's top wall in lignite quarries using drilling works
(2009) Mazáč, Josef; Kurka, Miroslav; Mikoláš, Milan
Overburden mining in lignite quarries has to deal - among other difficulties - with the occurrence of rocky grounds. The mining and exploration of these rocks requires increased cots and implementation of special technologies. These rocks are coherent or incoherent bodies of various shapes, ticknesses, sizes and types of placement. These various types of rocky grounds are bound to different geological structures and types of mother soils, because they originate from various periods of diagenesis of top wall soils - clays and sands. Actual experiments using geophysical methods of occurrence examination of these solid rocks have not brought expected and necessary results there. The failure of application of geophysical methods (caused by their inaccuracy, small depth range, and problematic implementation in the conditions of the mine Bilina) proves that one of possible solutions, which would credibly specify the range and placement of solid sandstone bodies, is the utilization of drilling exploration in an inspissated boring network suitably chosen for this purpose. With the issue of determination of these solid rocks by use of drilling works deals this paper.
Access status: Open Access ,
Advanced well stimulation method applying a propellant based technology
(2008) Krilov, Zoran; Kavedžija, Boris; Bukovac, Tomislav
The world oil industry practice, during over the century of its history developed widely known conventional methods of well stimulation. Recently, an advanced well stimulation method, based on implementation of high energy (HE) materials (special explosives, propellants or rocket fuels), has shown to be competitive. The basic principles of propellant based well stimulation technology, employing propulsive thermo-chemical reaction for generation the multidirectional fractures inside reservoir rocks around the wellbore and laboratory investigation of original permeability modification on core samples due to propellant treatment are explained. Also, the well treatment procedure, using high energy gas fracturing tool, applied at two onshore oil wells in Croatia is described along with post stimulation well production results.
Access status: Open Access ,
Aktywność sorbentów klinoptylolitowych w środowisku odpadowych płuczek wiertniczych
(2011) Jamrozik, Aleksandra; Gonet, Andrzej; Stryczek, Stanisław; Wojaczek, Dawid; Maciołek, Łukasz
Physical and chemical properties of wasted drilling mud are very different, depending on geological and technological drilling's conditions and type of drilling mud. Nowadays, quantity of drilling waste and their chemical composition are serious problems concerning environmental protection and also their recycling or storage. In work there are presented results of laboratory investigation carried out on use of clinoptilolite's zeolites to decrease hazardous influence of drilling waste on natural environment.
Access status: Open Access ,
Analiza badań niektórych właściwości ropy naftowej ze złoża LMG
(2007) Janocha, Andrzej; Steliga, Teresa; Bęben, Dariusz
Oil field Lubiatów-Międzychód-Grotów (LMG) is diversified geologically. Samples of each part of the oil field deposits possess peculiar properties. Smooth exploitation can be carried on only when the composition and properties of the natural gas and the crude oil well are known. Special attention should be paid to threats connected with precipitating hydrates, paraffins, asphaltenes and salt. The results of analyses of oil field LMG are presented in the paper. The analysis of these results points out to the trends to be taken into consideration when designing technological solutions.
Access status: Open Access ,
Analiza czasu trwania awarii i komplikacji w wierceniach naftowych
(2009) Dubiel, Stanisław; Ziaja, Jan
Some statistical data concerning failure-pronenes of oil drilling operations in Poland in the past and now are presented in the paper. Basing on industrial data and statistical analysis methods there were determined linear regression equations of time of specific drilling break-down removal depending on the depth of drilling. Such equations enable, e.g. predicting of the time of specific failures removal with a drill string, depending on the type of the break-down and the planned depth of the borehole at the moment the break-down.
Access status: Open Access ,
Analiza efektywności wymiany ciepła w wymiennikach otworowych o różnej konstrukcji
(2011) Śliwa, Tomasz; Gonet, Andrzej
There are described in the paper drilling of borehole heat exchangers (BHE) on the world and in Poland. The most popular constructions of BHE are described with possibility of heat extraction. There are also showed results of calculation of effective heat transfer coefficient of the Laboratory of Geoenergetics of Drilling, Oil and Gas Faculty of AGH University of Science and Technology BHEs with its heat resistivity. This parameters decided for energetic efficiency of the BHEs.
Access status: Open Access ,
Analiza i ocena możliwości renowacji odwiertu w uzdrowisku Połczyn
(2010) Solecki, Tadeusz
The article presents two ways of restoring the capacity of the extraction of mineral water from the borehole. The first way is to improve the well without changing its construction, using casing perforation and well stimulation. The second way is to re-drilling aquifer in the inclined axis of the borehole and the installation of additional well screen covering the entire thickness of the aquifer. The analysis shows that both methods allow the restoration of borehole extraction capacity. The choice of way should be determined on the basis of their cost.
Access status: Open Access ,
Analiza i ustalenie parametrów eksploatacyjnych dla odwiertów wód mineralnych w zależności od wielkości wykładnika gazowego
(2008) Duliński, Władysław; Ropa, Czesława Ewa
Mineral waters produced by wells are diversified in their mineral composition, energy conditions, water yield and gas exponential. Bearing in mind the management of mineral water and the co-produced carbon dioxide, an example of exploitation from a medium gas exponential well was analyzed in the paper. Values of pressure drop of the fluid running in the near-wellbore area, as well as calculations of pressure drop in the string at varying production rates, are calculated in the paper. The optimum diameters of the string for maintaining self-production are defined.
Access status: Open Access ,
Analiza konstrukcyjna stref zgrzania rur płuczkowych
(2008) Artymiuk, Jan; Bednarz, Stanisław; Kiełbik, Wiesław
During drilling operations in the well Odrowążek 1 in the north part of the Świętokrzyskie Mountains nine instances of string breaking took place. They were recurrent, similar in character and place of occurrence. The elements of the broken string were analyzed for their construction, non-invasive analyses, material tests and strength analysis. The results of the construction analysis are presented in the paper.
Access status: Open Access ,
Analiza kosztów separacji CO2 ze spalin w związku z możliwością jego podziemnego składowania
(2005) Kosowski, Piotr; Rychlicki, Stanisław; Stopa, Jerzy
In this article authors present the problem of estimating the cost of carbon dioxide separation. This problem is connected with the Kyoto Protocol regulations and limits of greenhouse gases emission. This article shows the costs of two technologies of carbon combustion for electricity generation: Pulverized Coal (PC) combustion and Integrated Gasification Combined Cycle (IGCC) combustion. Some economical aspects to the geological sequestration are also mentioned.
Access status: Open Access ,
Analiza modeli reologicznych stosowanych w technologiach inżynierskich
(2006) Wiśniowski, Rafał; Skrzypaszek, Krzysztof
The present area of application of rheological investigations and the development lines are presented in the paper. Rheological models of liquids employed in engineering (especially drilling) technologies are analysed. The advantages and disadvantages of the mathematical descriptions are presented. The newest solutions for determining rheological parameters of non-Newtonian fluids are reviewed and characterized.
Access status: Open Access ,
Analiza możliwości wykorzystania magazynów ciekłego propanu, lokowanych w strefie kawern wysadów solnych, do produkcji energii
(2010) Pająk, Leszek; Gonet, Andrzej; Śliwa, Tomasz; Knez, Dariusz
Paper presents fluids storage problems in cavities made in salt domes. Using heat from salt domes is future concept. This work raise a problem of combination propane storage and heat extraction. There are analyzed possibilities of using storage cavities with liquid propane to heating and air conditioning systems. Paper discuss usability of electric energy production in analyzed case.
Access status: Open Access ,
Analiza możliwości zagospodarowania wód mineralnych rejonu Krosna
(2005) Gonet, Andrzej; Lewkiewicz-Małysa, Aleksandra; Macuda, Jan
Mineral waters quite commonly occur in Poland, especially below groundwater layers. They are widely used in industry as chemical and medical material and utilized as waters for consumption purposes. As chemical material they are employed in producing table salt, as well as iodine, brome, magnesium and other chemical elements or compounds. As medical material they are applied in health-resort medicine. Recently mineral waters, especially those of low mineralization level, have been used on a large scale for consumption. The geological conditions of Krosno region have been presented in the paper and mineral waters occurring in Ciężkowice sandstones have been characterized as well. The physico-chemical composition of particular mineral waters that occur in the regions of Iwonicz and Krosno, have been compared and analyzed as to evaluate the exploitation possibilities of these waters in Krosno for drinking and balneological purposes. Water from the Mac Allan 4 water bore can be used for mineral water drinking cure, while water from the Mac Allan 11 water bore can be used for production of iodine-brome medical salt.
Access status: Open Access ,
Analiza możliwości zamienności i zmian jakościowych gazów w aspekcie bezpiecznego użytkowania i wspomagania zasilania sieci gazu ziemnego z zastosowaniem równoważnych mieszanin gazowych
(2011) Łaciak, Mariusz
The increase in natural gas consumption by the general public and industry development, in particular the petrochemical and chemical industries, has made increasing the world interest in using gas replacement for natural gas, both as mixtures of flammable gases and gas mixtures as LPG with air (SNG - Synthetic Natural Gas). Economic analysis in many cases prove that to ensure interchangeability of gas would cost less than the increase in pipeline capacity to deliver the same quantity of natural gas. In addition, SNG systems and installations, could be considered as investments to improve security and flexibility of gas supply. Known existing methods for determining the interchangeability of gases in gas gear based on Wobbe index, which determines the heat input and the burning rate tide, which in turn is related to flame stability. Exceeding the Wobbe index of a value increases the amount of carbon monoxide in the exhaust than the permissible concentration. Methods of determining the interchangeability of gases is characterized by a gas in relation to the above-described phenomena by means of quantitative indicators, or using diagrams interchangeability, where the gas is characterized by the position of a point in a coordinate system. The best known method for determining the interchangeability of gases is Delbourg method, in which the gas is characterized by the revised (expanded) Wobbe Index (Wr), the combustion potential, rate of soot formation (Ich) and the ratio of the formation of yellow ends (Ij). Universal way to determine the interchangeability of gas is also Weaver accounting method. It does not require determination of the reference gas. It is designed for utensils for household gas and gas pressure p = 1.25 kPa. The criteria and definition of gas interchangeability volatility in practice to the combustion in a gas gear. In the case of gas exchange in industrial furnaces, interchangeability criteria are usually not very useful because of other conditions of combustion and heat exchange. In industrial reheating furnace gas is combusted in a sealed combustion chambers. Air supply is regulated. The exhaust gases are discharged into canals and the chimney to the atmosphere. The temperature difference between load (fuel gas) and the flame is much less than in the case of gas household appliances. In the furnace heat exchange takes place mainly by radiation in 85% to 95%. The value of heat flux flowing from the gas to a heated charge is not proportional to the heat load burners. Interchangeability of gas is linked by adding to natural gas, a certain amount of gas that is a substitute for natural gas in meeting the criteria for substitution in order to ensure certainty of supply of natural gas to customers. Gases that can be used in the processes of blending and used as replacement gases are mainly a mixture of propane and propane - butane (LPG - Liquid Petroleum Gas), landfill gas or biogas (LFG - Landfill Gas) and dimethyl ether (DME). One of the more well-known gas mixtures used in many countries around the world to compensate for peak demands is a mixture containing about 75% of natural gas and approximately 25% propane / air (LPG / air). Also in Poland is prepared to amend the provisions in this regard (at this moment - oxygen in the gas network can not exceed 0.2%). In this paper, the calculations of interchangeability of gas mixtures LFG - LPG and LPG - air (SNG) for natural gas was made. It was determined whether the analyzed mixtures have similar stable flame zones regardless of the quality of LFG fuel and whether they may in whole or in part replace CH4, without any modification of equipment suction air for combustion. The obtained results will determine whether the fuel can be used as a replacement for natural gas used in such household appliances and, possibly, industrial burners. In connection with the possibility of changes in the quality of LFG, depending on such factors as storage time, as pre-treatment, will be determined the degree of interchangeability of LFG as a fuel mixed with regard to its quality.
Access status: Open Access ,
Analiza możliwości zastosowania rur z włókien szklanych w odwiertach eksploatacyjnych z dopływem siarkowodoru
(2008) Wysocki, Sławomir; Śliwa, Tomasz
On the Faculty of Drilling, Oil and Gas AGH University of Science and Technology in Cracow in the years 2001-2005 made research on packer fluids corrosion in exploitation wells with hydrosulphide inflow. The research shown casing and tubing corrosion process in standard packer fluids which with H2S become aggressive. It cause an idea to analyse of H2S inflow and interaction in that conditions for wells build of steel and fiberglass pipes. In the article shows considered the possibility of use and denger connected with use described construction of wells.
Access status: Open Access ,
Analiza numeryczna skuteczności zastosowania wstecznych otworów w świdrach udarowo-obrotowych
(2007) Knez, Dariusz; Bednarz, Stanisław
The percussion-rotary bits used for drilling blast holes in mining is still justifiable from the economical point of view. Cogged-bits are more frequently applied than the cross-blade bits. The drilling rate and footage are to some extent limited by the quality of washing the wellbore bottom. The disturbed process of cuttings removal from the well with air mud in the zone where the bit is connected with the downhole hammer. Attempts at using the reverse holes in the bit body were made. The analytical description of the effect is hindered by the complex shape of the space in which the mud is flowing. Therefore, the use of numerical methods enables detailed description of drilling mud flow in view of the analyzed problem. The paper presents the results of computer simulations in the form of maps of pressure and flow rate in the zone of the bit and downhole hammer.
Access status: Open Access ,
Analiza pomiarów inklinometrii w otworach geotermalnych na poligonie doświadczalnym VŠB - Uniwersytet Techniczny w Ostrawie
(2010) Bujok, Petr; Klempa, Martin; Rado, Robert
In the year 2009 arisen in the campus of VSB - Technical University of Ostrava new research polygon called Small Research Polygon (SRP). This research polygon is intended for investigation of regeneration and accumulation behavior of rock massive in the surroundings of energy exploited wells used by "small" consumers house holders. In the area of the Small Research Polygon are situated two operating wells attached to one heat pump and 9 monitored wells (each one of 140 m deep). A special complex of logging measurements including inclinometry was made during the realization of this project. The main goal of this article is data analysis about a steric progression of well axis in light of possible influences on curving of boreholes.