Browsing by Author "Wittenberger, Gabriel"

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Access status: Open Access ,
Core drilling tools used in oil and gas prospecting in Slovakia
(2008) Pinka, Ján; Wittenberger, Gabriel
Some methods and techniques, verified in day-by-day practice are commonly used for qualitative withdrawal of a core in Slovakia. The paper presents describing these methods, techniques and division of the splitting of a rock mass onto a sample form.
Access status: Open Access ,
Deep well coring of oil and natural gas wells
(2008) Pinka, Ján; Wittenberger, Gabriel
Coring is a drilling-technical operation which allows integral sampling of the drilled rock - a so-called core. The core is the highest quality part of material documentation of the well. Based on technical equipment used for coring, and based on a chosen coring technology, we can get mechanically undamaged core (or in physically unaffected condition). Individual techniques and technologies allow core-sampling of various types of rocks.
Access status: Open Access ,
Nabucco gas pipeline - possible solution of natural gas to the Slovak Republic
(2009) Pinka, Ján; Wittenberger, Gabriel; Brestovič, Tomáš
EU signifies Nabucco gas pipeline as one of its priorities in effort of diversification of power sources and transport routes. There is still question-mark over its existence. The goal of Nabucco gas pipeline is to bring Caspian gas on EU markets and pass by Russian territory. In the second phase pipeline from Iran will be attached to it. Gas pipeline will start in Turkish town Erzurum and will route across Turkey, Bulgaria, Romania and Hungary to Austria where it will be attached to Baumgarten.
Access status: Open Access ,
Russia is a major player in world energy markets
(2007) Pinka, Ján; Sidorová, Marina; Vizi, Ladislav; Wittenberger, Gabriel
The Russian Federation is a major player in world energy markets. It has more proven natural gas reserves than any other country and is among the top ten countries in proven oil reserves. It is the world's largest exporter of natural gas, the second largest oil producer and exporter, and the third largest energy consumer. But Russia may be „number one” in oil production and get ahead of Saudi Arabia. Over 70 percent of Russian crude oil production is sent directly abroad for export, while the remaining 30 percent is refined locally. Russia's oil exports are sent via the multiple-branch Druzhba pipeline to Belarus, Ukraine, Germany, Poland, and other destinations in Central and Eastern Europe (including Hungary, Slovakia, and the Czech Republic). The remaining crude oil exports are sent to maritime ports in the Black Sea and Baltic Sea and are sold on world markets.
Access status: Open Access ,
Utilization of geothermal energy for electric power
(2007) Pinka, Ján; Sidorová, Marina; Vizi, Ladislav; Wittenberger, Gabriel
The geothermal energy is gaining more and more attention today. The geothermal energy is an energy derived from the heat of the earth's core. It is clean, abundant, and reliable. If properly developed, it can offer a renewable and sustainable energy source. There are three primary applications of geothermal energy: electricity generation, direct using of heat, and ground-source heat pumps. The results of geological research put Slovakia to the regions with the high geothermal potential. The project for the geothermal energy utilization in the area of east Slovakian Neogen is coming in to the phase of production tests these days. The article is also focused on the descriptions of every phase of geothermal water utilization.