New design and construction of expandable casing tubes

verfasst von: A. Varahram, B. Breidenstein, T. Hassel, F. W. Bach, H. J. Maier
Abstract: Exploration for deep-geothermal resources is still a costly and high risk operation. The research association “Geothermal Energy and High Performance Drilling Research Program, gebo” was founded to improve the cost effectiveness of geothermal energy production in particular by developing new drilling concepts for deep geological layers. A mono-diameter borehole casing concept is developed to achieve this ambitious aim. To accomplish this, a special type of casing is essential, structured from folded tubulars for expandable casing applications featuring clover-like cross sections and expandable to a cylindrical form when the casing is at its downhole position. A smaller borehole volume and a reduction of drilling time and casing related costs are the main advantages of this method compared to conventional drilling. Design, material selection and realization of the folded tubulars take place at the Institut für Werkstoffkunde (Materials Science). The evaluations of the results are based on residual stress analysis and the measurement of the geometry after each deformation step at the Institute of Production Engineering and Machine Tools (IFW).
Organisationseinheit(en): Institut für Werkstoffkunde
Institut für Fertigungstechnik und Werkzeugmaschinen
Typ: Artikel
Journal: Forschung im Ingenieurwesen/Engineering Research
Band: 78
Seiten: 145-149
Anzahl der Seiten: 5
ISSN: 0015-7899
Publikationsdatum: 12.2014
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Allgemeiner Maschinenbau
Elektronische Version(en): https://doi.org/10.1007/s10010-014-0180-z (Zugang: Geschlossen)

BibTeX

@article{4782918a88924d9a9051ba3851282be6,
title = "New design and construction of expandable casing tubes",
abstract = "Exploration for deep-geothermal resources is still a costly and high risk operation. The research association “Geothermal Energy and High Performance Drilling Research Program, gebo” was founded to improve the cost effectiveness of geothermal energy production in particular by developing new drilling concepts for deep geological layers. A mono-diameter borehole casing concept is developed to achieve this ambitious aim. To accomplish this, a special type of casing is essential, structured from folded tubulars for expandable casing applications featuring clover-like cross sections and expandable to a cylindrical form when the casing is at its downhole position. A smaller borehole volume and a reduction of drilling time and casing related costs are the main advantages of this method compared to conventional drilling. Design, material selection and realization of the folded tubulars take place at the Institut f{\"u}r Werkstoffkunde (Materials Science). The evaluations of the results are based on residual stress analysis and the measurement of the geometry after each deformation step at the Institute of Production Engineering and Machine Tools (IFW).",
author = "A. Varahram and B. Breidenstein and T. Hassel and Bach, {F. W.} and Maier, {H. J.}",
note = "Publisher Copyright: {\textcopyright} 2014, Springer-Verlag Berlin Heidelberg. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",
year = "2014",
month = dec,
doi = "10.1007/s10010-014-0180-z",
language = "English",
volume = "78",
pages = "145--149",
journal = "Forschung im Ingenieurwesen/Engineering Research",
issn = "0015-7899",
publisher = "Springer Verlag",
number = "3-4",
}