Artykuły (CN-drill)

Permanent URI for this collectionhttps://repo.agh.edu.pl/handle/AGH/102818

Artykuły czasopisma AGH Drilling, Oil, Gas

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Now showing 1 - 20 of 370

Access status: Open Access ,
Technological and safety aspects of CNG home fast refueling units
(2016) Kuczyński, Szymon; Liszka, Krystian; Łaciak, Mariusz; Olìjnik, Andrìj; Strods, Robert; Szurlej, Adam
Despite all global economic shifts and the fact that natural gas is recognized worldwide as the main and the leading alternative to oil products in transportation sector, there is a huge barrier to switch passenger vehicle segment to natural gas – the lack of refueling infrastructure for natural gas vehicles. The key to solving that problem and providing barrier breaking refueling infrastructure solution for natural gas vehicles (NGV) is home fast refueling units. It operates using natural gas (methane), which is being provided through gas pipelines at client’s home, and electricity connection point. It enables an environmentally friendly NGV’s home refueling just in minutes. The underlying technology is one stage hydraulic compressor (instead of multistage mechanical compressor technology) which provides the possibility to compress low pressure gas from residential gas grid to 200 bar for its further usage as a fuel for NGVs. More than efficiency and convenience, the direct hydraulic compressor technology provides compelling cost and lifetime advantages as well as superior convenience over other solutions. Aims of this article is to compare technical, technological and safety aspects of home refueling units and estimate a perspectives of natural gas vehicles as an alternative for regular vehicles.
Access status: Open Access ,
An assessment of the influence of the main oil industry technological processes on the environment
(2015) Mandrik, Oleg Mikolajovič; Pukìš, Arsen Volodimirovič; Mihajlûk, Ûliâ Dmitrìvna
This article discusses the main dangerous ecological factors of influence of each individual technological process element of oil production on the environment, namely: preparation of the ground for well construction, oil production, transportation of well production, its storage in reservoirs, and storage of the oil industry wastes. There was developed a primary classification of the characteristic influences of the main oil industry technological processes onto the environment.
Access status: Open Access ,
Methods of CO₂ acquisition and costs reduction in shale rocks fracturing technology
(2016) Miedzińska, Danuta; Niezgoda, Tadeusz
The innovative method of shale gas recovery with the use of subcritical $CO_{2}$ is currently developed within the project titled »Development of guidelines for design of innovative technology of shale gas recovery with the use of liquid $CO_{2}$ on the base of numerical and experimental research – DIOX4SHELL«, supported by the National Centre for Research and Development (NCBR). The project is carried out by Polish company PGNiG and by academics from WAT, AGH and PW (Military University of Technology, AGH University of Science and Technology, and Warsaw University of Technology). Finding the best business model, in which costs of $CO_{2}$ production or acquisition are negligible is one of the most important factors influencing the economical effectiveness of the technology. The main part of known $CO_{2}$ acquisition methods is based on fuel purchase and its combustion, what is very expensive process. It results with the high $CO_{2}$ price, when purchasing from producer, about 300 zl/ton. This price is quite high, considering current low prices of natural gas. In the paper basic aspects of $CO_{2}$ acquisition from $CO_{2}$ producers, exhaust gases treatment plants or plasma gasification methods will be presented.
Access status: Open Access ,
Linear Swelling Test (LST) of clay formation under the influence of newly developed drilling fluids with the addition of cationic polymers
(2015) Wysocki, Sławomir; Wiśniowski, Rafał; Ryznar, Dawid; Gaczoł, Magdalena
This paper shows research of Linear Swelling Test (LST) of shale rocks under the influence of three drilling muds with different cationic polymers. Tested polymers have been synthetized at the Drilling, Oil and Gas Faculty of AGH UST Krakow. Research findings indicate that synthesized polymers as well as developed on its base drilling fluids effectively inhibit hydration and prevent the disintegration of clay formation.
Access status: Open Access ,
Emission of pollutants into the air during exploration of coalbed methane
(Wydawnictwa AGH, 2018) Łukańko, Łukasz; Macuda, Jan
Coalbed methane is usually utilized by gas well drilled from the surface. In order to increase the coefficient of methane exploration from coal seams, in a horizontal section of the well, hydraulic fracturing operations are applied. Drilling process and hydraulic fracturing operations involve emission of pollutants to the air from the fuel combustion process. In the case of drilling operations fuel is used to generate electric power, which drives the drilling device and its components, while during hydraulic fracturing to drive high-pressure pump engines.
Access status: Open Access ,
Ocena wpływu warunków klimatycznych na bilans energetyczny górotworu na obszarze poligonu badawczego VSB - TU Ostrava
(2012) Bujok, Petr; Klempa, Martin; Koziorek, Jiři; Rado, Robert; Porzer, Michał
VSB - Uniwersytet Techniczny w Ostrawie posiada unikalną możliwość badania zmian temperatury w górotworze dla długotrwałego działania pomp ciepła. Nowy budynek Audytorium jest nie tylko największym obiektem w Republice Czeskiej, ale także w Europie Środkowej, ogrzewanym przez system pomp ciepła. Wraz z systemem otworów technologicznych pozyskujących ciepło z górotworu odwiercono również badawcze otwory monitorujące, które kontrolują zmiany temperatury w otaczającym górotworze podczas eksploatacji systemu grzewczego. System monitorowania zlokalizowany na obszarze działania otworów technologicznych nazywa się Dużym Poligonem Badawczym. VSB-TU posiada drugi systemu badawczego nazywany Małym Poligonem Badawczym i lokalizacją w pobliżu budynku Centrum Badań Energetycznych (CBE). Składa się ona z dwóch odwiertów technologicznych do eksploatacji energii cieplnej przy użyciu pomp ciepła i dziewięciu otworów monitorujących, położonych w pobliżu tych dwóch odwiertów. Wszystkie odwierty wykonane na terenie obu poligonów badawczych wyposażone są w czujniki, które monitorują zmiany temperatury podczas ogrzewania (pobieranie energii cieplnej z ośrodka skalnego w zimie) i chłodzenia (przekazywania energii do górotworu w okresie letnim). Głównym celem badań jest sprawdzenie funkcjonalności i wydajności całego systemu. W artykule zaprezentowano niektóre aspekty zagadnień pozyskiwania energii cieplnej z górotworu oraz wyniki uzyskanych analiz wynikających z monitoringu i pomiarów zmian temperatury w warstwach powierzchniowych górotworu do głębokości około 20 m.
Access status: Open Access ,
Numerical simulation of drilling fluid flow in annular the space of the borehole
(2015) Kowalska-Kubsik, Iwona
This paper presents the numerical results of a numerical analys is of drilling fluid flow through annular space in the borehole. The analysis used the Herschel–Bulkley rheological fluid model. The obtained results of the analysis for three cases with variable geometry. Variable geometry is associated with a larger diameter drill in the joints of drill pipes, and consequently, with reduced flow cross-section. A comparison of pressure values at the end of the analyzed examples showed that in the example of a simple drill pipe with out joints, pressure values were 30% higher than in the case, which takes into account changes in the geometry of the joints.
Access status: Open Access ,
The vision of students regarding tomorrow's world in European engineering education
(2014) Duşe, Dan Maniu; Duşe, Carmen; Nemeş, Cătălin
Starting from Michael Rendell and his team's »Managing tomorrow's people«, this paper sets out to build a possible future of leadership in the European engineering education by taking the students' view on tomorrow's world into consideration. We can ask ourselves if European technical universities, and engineering education in particular. could exist in a Blue, Green and Orange World. How would they look like and how efficient would »corporate« universities be, assuming that the Blue World would prevail in the next 10 years. What should their development strategies be and what labor markets would absorb their graduates? What if universities would be in the Green or Orange World? What leaders should they have then? Starting from these questions we try to construct possible scenarios for a European reality.
Access status: Open Access ,
The development of a sensor system for monitoring the displacement of horizontal laterals in Radial Drilling Technology
(Wydawnictwa AGH, 2017) Ziaja, Jan; Movčan, Vasil'
Radial drilling technology was developed by Rad Tech international inc., an American company set up by Henk Jelsma, its permanent head and the technology patent holder. First introduced in the Americas, radial drilling technology acquired wide recognition in the USA and Colombia and later found applications in Canada, Bolivia, Argentina, Chile and the Middle East. In general, this technology is aimed at extending and improving drainage areas in productive formations. Other applications of radial drilling include the creation of specifically directed injection channels and exploration activities. Performance testing of these short radius laterals has not been adequately studied and significant questions remain about how well these technologies can deliver on their promises. The main objective of the paper is to sum up previous experience in developing a system for monitoring the displacement of horizontal laterals and wells, and examining a prospective new technology which can increase the efficiency of radial drilling.
Access status: Open Access ,
Study of the stress strain of rock massif in the crooked wellbore
(2014) Černova, Miroslava Êvgenìïvna; Kunĉak, Âroslav Vasi'ovič
We investigated the stressed-deformed state of rock mass in a deviated borehole. There were received the analytical dependencies for the determination of circular and radial stress that allows for a science-based approach to the design of a borehole profile during the drilling process in the uneven horizon of rock mass of such reservoirs as Dnipro-Donetsk Depression and Black Sea Shelf and the construction of hydroacoustic directional energy devices with controlled parameters.
Access status: Open Access ,
The methods of pressures prediction based on geophysical data
(2015) Wiśniowski, Rafał; Toczek, Przemysław
Prediction of reservoir pressure and so its values at an early stage of wellbore designing significantly increases the profitability of exploration and production wells design. The prediction of rock mass pressures can be performed in a number of ways. The prediction methods have been reviewed since the 1950s. The methods of empirical forecasting of pressures proposed by Eaton B.A. as well as Hottman and Johnson were described in the paper. The paper also refers to the prediction of rock mass pressures on the basis of seismic well log results obtained from works performed on the same geologic unit. A relation between basic parameters of rocks along the wellbore profile is shown. The Eaton method was used for empirical determining pressure for a planned well based on seismic data form the existing well.
Access status: Open Access ,
Phase equilibria for liquefied natural gas (LNG) as a multicomponent mixture
(2015) Włodek, Tomasz
Liquefied natural gas (LNG) has an increasingly important role in the global natural gas market. Global demand for natural gas will grow over the coming years. LNG is transported by ships to unloading points on the storage terminals. During the LNG unloading and storage processes some part of LNG evaporates into gas phase and causes changes in the composition of stored LNG. The main component of LNG is methane, the remaining components are primarily ethane, propane, butane and nitrogen. Depending on the participation of these components the basic thermodynamic parameters of LNG can significantly change. LNG is also product sensitive to changes of temperature. In order to better prediction of changes of individual parameters of stored LNG caused by changes of temperature and LNG composition vapor-liquid equilibrium (VLE) calculations are performed for cryogenic conditions using equations of state.
Access status: Open Access ,
The modified Dräger probe to the geochemical research of the soil gases composition
(2015) Fąfara, Zbigniew; Ilkiv, Igor; Solecki, Tadeusz
The Dräger probe in the measurement set to the geochemical research of the soil gases composition is inconvenient to use. It's heavy, which are reąuired to operate at least two people. Cumbersome and time-consuming is to place it into the soil by impact method, and often there is fail to reach the planned measurement depth. For this reason, there was designed and made the new modified Dräger probe. The new probe has significantly lower mass and outer diameter. In principle it should be possible to introduce it into the soil by pushing, which will greatly facilitate and accelerate conducting the geochemical research of the soil gases composition.In the autumn of 2014 has been tested the modified Drager probe. The purpose of this study is to assess it suitability to conduct the geochemical research of the soil gases composition. In total there were performed 374 measurements of the soil gases composition at different depths in the 247 measurement points. In 99 cases (26.5%) there was failed to perform the measurement because the soil gases flow rate through the meter was too little. Pulling probe usually allowed to perform the research - in only 6 measurement points (2.4%), it was impossible. The average depth of the measurement point is equal to 0.78 m.
Access status: Open Access ,
An application of a Raman scattering analyzer for the determination of natural gas composition at a processing plant
(2016) Włodek, Tomasz; Kuczyński, Szymon; Smulski, Rafał; Polański, Krzysztof
The development of conventional and unconventional natural gas reservoir management includes continuous monitoring of hydrocarbon exploitation processes and its impact on the reservoir and environment. Raman spectroscopy, which allows for the identification of reservoir fluids (including natural gas) components can be a very promising method for the application of providing a quick, non-invasive, nondestructive analysis.The proposed in this paper measurement methods are focused on the use of: – a laboratory cell (autoclave) with sapphire window mounted on a specially prepared bypass pipeline; – a dedicated Raman probe mounted to the available installed stub pipe; – the construction of a special measurement cell.The article presents the basic technical assumptions for measurements of the composition of natural gas with the use Raman spectroscopy.
Access status: Open Access ,
Social assessment of the impact of oil exploitation on lives of inhabitants and the environment
(2016) Rychlicki, Stanisław; Kosowski, Piotr; Wartak, Joanna; Solecki, Marek
This article presents the results of surveys carried out in the framework of the MUSE project in order to gain knowledge and obtain assessment of the impact of oil exploitation on the lives of the inhabitants of certain regions and on the environment. The survey was conducted in Krosno, Jedlicz and Rymanów (SE Poland). In this area, since the nineteenth century, there are o lot of crude oil mines and many local people are employed at its exploitation. Current condition of the environment and the negative effects of pollution and its causes were assessed by the local community. Within the framework of the conducted study, particular attention was paid to assessing the impact of oil exploitation on the environment and human health. Respondents also pointed to environmental elements that have gone under the greatest transformation in connection with the exploitation of crude oil.
Access status: Open Access ,
The multicriteria method for selecting rigs for drilling gas wells from post-mining gobs
(Wydawnictwa AGH, 2017) Macuda, Jan; Łukańko, Łukasz; Hendel, Jacek
During drilling wellbores from the surface to recover methane from post-extraction gobs, attention should be paid to using appropriate rigs. Rigs with optimum technological parameters, adjusted to the geological setting, design of wellbore and technology of drilling, allow for high drilling rates and a considerably lower cost of realization to be obtained. The rig to be used for drilling production wells can be correctly selected using the multicriteria optimization method with synthetic evaluation measure of its technological parameters. For this purpose, the technological parameters of rigs available on the Polish market for the realization of normal diameter wells with percussion-rotary method to a depth of 500 m and 1000 m were reviewed. Taking into account the geological build of the Upper Silesian area and the design of the producing well used for the production of methane from past-extraction gobs, eight evaluation criteria and their weights (W) were selected. On this basis the technical parameters of rigs to be used for drilling wells to a depth of 500 m and 1000 m were reviewed with the multicriteria method. This created the basis for selecting dedicated rigs with optimum technological parameters for drilling normal diameter wells to a depth of 500 m and 1000 m.
Access status: Open Access ,
Znaczenie technologii wytwarzania energii elektrycznej bazujących na gazie ziemnym dla przedsiębiorstwa energetycznego w kontekście dywersyfikacji jego struktury produkcyjnej
(2012) Kryzia, Dominik; Kaliski, Maciej
W artykule opisano zmiany na rynku energii oraz potrzeby krajowej elektroenergetyki. Zwrócono uwagę na możliwości wykorzystania gazu ziemnego do produkcji energii elektrycznej. Opisano ryzyko funkcjonowania przedsiębiorstwa energetycznego i możliwości jego ograniczenia poprzez dywersyfikację technologii wytwórczych. Omówiono analizę portfelową w zakresie planowania struktury produkcyjnej przedsiębiorstwa. Przeprowadzono analizę przypadku pokazując korzyści jakie niesie dla przedsiębiorstwa energetycznego dywersyfikacja jego struktury wytwórczej poprzez wdrożenie technologii gazowych.
Access status: Open Access ,
Influence of low frequency vibrations on drillstring dynamics
(2014) Černova, Miroslava Êvgenìïvna
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 low frequency vibrations of drilling instrument is a matter of topical interest nowadays.
Access status: Open Access ,
The analysis of technology of drilling with roller bits on the Carpathian foreland area in the years 1995-2011
(2014) Rzyczniak, Mirosław; Rajchel, Grzegorz
In the article, there has been described results of the statistical analysis lead towards two groups of roller bits, with bit teeth, with diameters 0,216 m and 0,4445 m produced by Drilling Equipment and Device Company »GLINIK«. Using these bits, there had been conducted a process of drilling holes on the Carpathian foreland area in the years 1995-2011. According to the analysis of a dispersion of measure points it was assigned linear regression equations and lead significance tests for values of the correlation factors and linear regression factors, drilling technology parameters dependency (weight on bit, rotational speed, product of normalized weight on bit and rotational speed, drilling mud capacity flow rate) and bit performances (rebore, drilling time, average rate of penetration), since the year in which analyzed bits were used. The results of the researches has been showed in the form of charts of dispersion of measure points with lines and regression equations and lines of confidence intervals. The results of significance tests for correlation factors and linear regression factors has been inserted in tables. The purpose of lead analyses were acquiring information about changes of drilling technology parameters in a long period of time and about their influence on bit performances' values.
Access status: Open Access ,
Hydraulic fracturing and U.S. water policy
(2013) Burnett, J. Weslev