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oa Where do we Drill? Dimensional Accuracy of Conventional and Innovative Hydraulic Geojetting Drilling Technology
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 1st EAGE Sustainable Earth Sciences (SES) Conference and Exhibition, Nov 2011, cp-268-00004
- ISBN: 978-90-73834-22-4
Abstract
For enhancing the contribution of geothermal energy a continuous research and development is required. Especially the drilling technology has a significant potential. The economic efficiency of geothermal project depends on accruing drilling costs. The borehole quality and environmental compatibility during the drillings are largely depending on the selected drilling method. Environmental impacts during the drillings are affected by the fuel consumption of the power equipment for the drilling system and the drill rig. The purity of the used working and flushing fluid, depending on the selected drilling method, are impacting the environment. In context of a research project of the ‘GZB’ in Stockholm, Sweden, the aim was to investigate whether the innovative hydraulic GeoJetting drilling technology in an alternative to a pneumatic DTH-System in the field of geothermal drilling.