Perfect well

In hydrogeology, a complete well (English: complete well , fully penetrated well or perfect well ) refers to the type of well which , on the one hand, fully opens up the aquifer and, on the other hand, extends to the groundwater bed, i.e. the aquifer below.

Well, do not completely have to be imperfect wells (English incomplete well ) called. Imperfect wells only cover part of the aquifer and do not reach the bottom of the groundwater.

The main difference between perfect and imperfect wells is the type of flow through the groundwater . While perfect wells have a predominantly horizontal and especially radial flow, imperfect wells also have a flow against the bottom of the well. This (also vertical) flow to the well bottom ensures a smaller lowering of the groundwater level than a purely horizontal flow.

The assumption that a well is perfect often provides simplified framework conditions in the modeling, which facilitate theoretical derivations. For example, the assumption that the well is perfect is a prerequisite for the well formula according to Dupuit-Thiem .

Individual evidence

↑ ^a ^b Volker Schweizer: Dictionary of Geology . German – English, English – German. Springer-Verlag, Berlin / Heidelberg 2012, ISBN 978-3-8274-1825-8 , pp. 48 , doi : 10.1007 / 978-3-8274-2262-0 .
^ Helmut Prinz, Roland Strauss: IngenieurgeoIogie . 5th, revised and expanded edition. Spektrum Akademischer Verlag, Heidelberg 2011, ISBN 978-3-8274-2472-3 , p. 307 .
^ Bernward Hölting, Wilhelm Georg Coldewey: Hydrogeology . Introduction to General and Applied Hydrogeology. 8th edition. Springer-Verlag, Berlin / Heidelberg 2013, ISBN 978-3-8274-2353-5 , pp. 280 , doi : 10.1007 / 978-3-8274-2354-2 .
^ Bernward Hölting, Wilhelm Georg Coldewey: Hydrogeology . Introduction to General and Applied Hydrogeology. 8th edition. Springer-Verlag, Berlin / Heidelberg 2013, ISBN 978-3-8274-2353-5 , pp. 265 , doi : 10.1007 / 978-3-8274-2354-2 .

[Woer-1] Volker Schweizer: Dictionary of Geology . German – English, English – German. Springer-Verlag, Berlin / Heidelberg 2012, ISBN 978-3-8274-1825-8 , pp. 48 , doi : 10.1007 / 978-3-8274-2262-0 .

[Str-2] Helmut Prinz, Roland Strauss: IngenieurgeoIogie . 5th, revised and expanded edition. Spektrum Akademischer Verlag, Heidelberg 2011, ISBN 978-3-8274-2472-3 , p. 307 .

[Cold280-3] Bernward Hölting, Wilhelm Georg Coldewey: Hydrogeology . Introduction to General and Applied Hydrogeology. 8th edition. Springer-Verlag, Berlin / Heidelberg 2013, ISBN 978-3-8274-2353-5 , pp. 280 , doi : 10.1007 / 978-3-8274-2354-2 .

[Cold265-4] Bernward Hölting, Wilhelm Georg Coldewey: Hydrogeology . Introduction to General and Applied Hydrogeology. 8th edition. Springer-Verlag, Berlin / Heidelberg 2013, ISBN 978-3-8274-2353-5 , pp. 265 , doi : 10.1007 / 978-3-8274-2354-2 .