TEMPERATURE CHANGE IN THE PROCESS OF SPONTANEOUS OUTFLOW OF GAS-BEARING GROUNDWATERS
Journal Title: Biuletyn Państwowego Instytutu Geologicznego - Year 2013, Vol 456, Issue 456
Abstract
The article provides a short description of a solution for spontaneous outflow of gas-bearing groundwaters from vertical boreholes. A two-phase flow of gas-water mixture in extraction pipes and chokes was adopted for the solution. Also, differences between water and gas velocities were taken into account. The article focuses chiefly on the problem of thermodynamic flow effects. An assumption was made that the flow of such a mixture occurs in an adiabatic process, i.e. there is no heat exchange between the gas-water mixture and the surroundings. It was also assumed that temperature change during spontaneous outflow results from three processes: degassing of water, gas expansion and frictional resistance. Calculations of temperature change were performed by dividing the extraction pipe and the choke into segments. Subsequently, the calculation results were compared with measurement results obtained on real holes where long-term research or extraction had been conducted. They prove that the presented spontaneous outflow model adequately describes thermodynamic processes.
Authors and Affiliations
Stanisław ŻAK
Keywords
Related Articles
- EP ID EP63889
- DOI -
- Views 30
- Downloads 0
NEW DATA ON THE CONCENTRATIONS OF NATURAL RADIONUCLIDES IN THE WATER ENVIRONMENT OF THE KOWARY REGION (SUDETES MOUNTAINS, WEST POLAND)
This paper presents the newly measured concentrations of natural radionuclides (238U, 234U, 226Ra, 228Ra and 222Rn) in water samples collected from old mining galleries (adits), the Jedlica River and streams and from som...
GROUNDWATER RENEVAL OF GWDA CATCHMENT
In this article major results of hydrogeological and hydrological researches altogether with reneval aquifer system assessment in the Gwda catchment area of 4,947.3 km[sup]2[/sup] are presented. It was studied as docume...
CZY ISTNIEJE WSCHODNIOEUROPEJSKA GAŁĄŹ KALEDONIDÓW?
Od początku wprowadzenia pojęcia wschodnioeuropejskiej gałęzi kaledonidów przez Limanowskiego (1922) trwa dyskusja dotycząca przebiegu tej gałęzi na południowy zachód od kratonu wschodnioeuropejskiego. W skrajny sposób p...
ZARYS METODYKI IDENTYFIKACJI DAWNYCH WYROBISK GÓRNICZYCH, TZW. KOPANEK PONAFTOWYCH, NA OBSZARZE UZDROWISKA IWONICZ-ZDRÓJ
Roboty górnicze w poszukiwaniu ropy naftowej prowadzone były na terenie Iwonicza-Zdroju już od 1860 r. Wyrobiska górnicze miały charakter studni kopanych, potocznie nazywanych przez ówczesnych górników kopanką. Kluczowym...
LAND SUITABILITY MAPS FOR PERSPECTIVE BUILD-UP AREAS AS A RESULT OF DYNAMIC SCENARIO ANALYSES IN INTEGRATED SPATIAL INFORMATION SYSTEMS ARCGIS – COMMUNITYVIZ
Geological data are one of many interdisciplinary elements of reports taking into consideration problems and trends of spatial planning for different administrative divisions. Information about ground types and ground wa...