Scholarly record
NUMERICAL ANALYSIS OF WATER WELL DRILLING SECTOR OF TURKEY
Abstract
Performing a numerical analysis of water well drilling sector of Turkey was aimed in this study. Within this purpose, number of the machinery in equipment pool of the institutions and companies which are involved in the water well drilling, yearly drilling quantities, drilling equipment preferences and geological data of 2640 water well drilling boreholes opened in 73 provinces between the years of 1998 – 2006 and the results below have been reached: The Municipalities in Turkey meet 95 \% of their drinking water needs (70 \% of the population of Turkey namely 49 million people) from groundwater as 60 \% from wells, 35 \% from spring water and 5 \% (30 \% of the population of Turkey namely 21 million people) by purifying fro surface water. 98 \% of the villages meet their drinking water needs from groundwater. Such need is being met as 85 \% from spring water, 13 \% of from wells, 2 \% from rivers, dams, lakes and lagoons. Yearly water well drilling need in Turkey is around 18,100 wells and 1,705,000 m. Water well drilling boreholes are opened in Turkey as 50 \% at old or new river bed alluvial deposits, 20 \% at limestone, 15 \% at volcanic rocks such as basalt, andesite, tuff, agglomerate, 10 \% at river basins where sandy, gravelly and clayey levels of lake beds are, 5 \% at rocks such as granite, diabase, serpentine. Water well drillings in Turkey approximately are at the depth of < 50 m as 14.4 \%, 50 – 100 m as 36.6 \%, 101 – 149 m as 14.6 \%, 150 – 199 m as 22.3 \%, 200 – 249 m as 7.1 \%, 250 – 299 m as 2.3 \%, 300 – 349 m as 1.2 \%, > 350 m as 1.5 \%. It is observed that rotary drilling which is one of the water well drilling methods are being used as weighted in Turkey. This is caused by economical situations of drilling companies besides the geological conditions. However, it is observed that water well drilling sector’s wish to use air drilling increased in recent years.
Publication details
References3
Gumusay, G., 1996; Yesterday, Present and Future of Waterwell Drilling Sector in Turkey. Drilling Symposium of Turkey (In Turkish), pp. 34-42
Özdemir, ?., 2007; Waterwell Drilling Sector Inventory of Turkey. 215 p. (prepared for MAPEK MACHINE CO. LTD.) (In Turkish and Unpublished)
Özdemir, ?., 2006; Evaluation of Drilling Sector and Drilling Education of Turkey, Bulletin of Chamber of Geological Engineers of Turkey, Vol. 2006/3, pp. 97-101 (In Turkish).
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