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Bulletin of Engineering Geology and the Environment

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01.11.2007 | Original Paper

Ground source energy in crystalline bedrock-increased energy extraction using hydraulic fracturing in boreholes

verfasst von: R. K. Ramstad, B. O. Hilmo, B. Brattli, H. Skarphagen

Erschienen in: Bulletin of Engineering Geology and the Environment | Ausgabe 4/2007

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Abstract

The paper discusses the use of hydraulic fracturing to increase the yield in ground source heat pump systems in crystalline bedrock by creating a larger heat exchange area in the bedrock. It reports pilot tests using water-only hydraulic fracturing and hydraulic fracturing with the injection of sand. The use of sand as a propping agent appears to be more necessary in fractures with high counter pressures (>40 bars). The particle size of the sand should be adjusted to the counter pressure; for fractures with lower counter pressures a coarser sand is recommended.

Vorheriger Artikel Engineering geological appraisal of the Sulakyurt dam site, Turkey

Nächster Artikel Amer Ali Al-Rawas and Mattheus F. A. Goosen (eds.): Expansive soils. Recent advances in characterization and treatment

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Titel: Ground source energy in crystalline bedrock-increased energy extraction using hydraulic fracturing in boreholes
verfasst von: R. K. Ramstad
B. O. Hilmo
B. Brattli
H. Skarphagen
Publikationsdatum: 01.11.2007
Verlag: Springer-Verlag
Erschienen in: Bulletin of Engineering Geology and the Environment / Ausgabe 4/2007
Print ISSN: 1435-9529
Elektronische ISSN: 1435-9537
DOI: https://doi.org/10.1007/s10064-007-0100-7

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