Forecast for thermal water use from Upper Jurassic carbonates in the Munich region (South German Molasse Basin)

Dussel, Michael; Lüschen, E.; Thomas, Rüdiger; Agemar, Thorsten; Fritzer, Thomas; Sieblitz, S.; Huber, Bernard; Birner, Johannes; Schulz, Rüdiger

doi:10.1016/j.geothermics.2015.10.010

Cited by 39 publications

(33 citation statements)

References 9 publications

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“…Such an effect of scaling versus corrosion is also likely in the case presented here. Steel corrosion favoring initial calcite nucleation and thereby influencing further crystal growth, however, is in line with the observed extensive scaling progress in spite of relatively low total dissolved solid contents measured in the thermal waters (≤700 mg/l, Seibt 2010; Mayrhofer et al 2014;Dussel et al 2016). In addition, hydrochemical calculations (using PHREEQC)…”

Section: Carbonate Scaling Versus Corrosionsupporting

confidence: 81%

“…Located in southern Germany, the two hydrogeothermal doublet systems with Organic Rankine Cycles produce district heat and electric power (7 MW el max. each; ~31 GWh/a; Weber et al 2016) from deep thermal water production and reinjection wells (KIR: GT1 4214 m, GT2 4452 m final measured depth; DUR: GT1 4393 m, GT2a 4530 m) tapping the regional Malm (Upper Jurassic) limestone/dolomite aquifer overlain by Cretaceous marls and sandstones followed by Paleogene to Late Miocene successions of marls, sands, and clays (Mayrhofer et al 2014;Dussel et al 2016;Goldbrunner and Vasvari 2016). Top of Malm at the location KIR is reached at 3447 m (GT1) and 3711 m (GT2) and at 3715 and 3641 m for GT1 and GT2a at DUR, respectively.…”

Section: Sites Samples and Methodsmentioning

confidence: 99%

“…The exploitation of Upper Jurassic carbonate aquifer H 2 S-containing Na-Ca-HCO 3 -Cl thermal water (Mayrhofer et al 2014;Stober 2014;Dussel et al 2016;Goldbrunner and Vasvari 2016) entails a significant hydrogeochemical potential for both carbonate scaling and steel corrosion. This natural environmental potential consists in the initial versus disturbed dissolved carbonate equilibria leading to carbonate scaling and several corrosive constituents (H 2 S, CO 2 , Cl − , H 2 ) in combination with high temperatures and high flow rates (component supply) effecting steel deterioration.…”

Section: Conclusion and Environmental And Technical Considerationsmentioning

confidence: 99%

“…This is supported by prominently high aqueous solution pCO 2 values, high water temperatures, and eventually other (e.g., sulfur isotopic) indicators. Fault zones are considered a primary target of productive geothermal wells in the region although being difficult to constrain spatially (Wolfgramm et al 2009;Stober 2014;Dussel et al 2016;Goldbrunner andVasvari 2016, Przybycin et al 2017). Deep faults delivering abundant CO 2 might further be associated with hypogenic karstification, i.e., providing an efficient mechanism for aquifer host rock dissolution and potential secondary carbonate precipitation.…”

Section: Conclusion and Environmental And Technical Considerationsmentioning

confidence: 99%

See 3 more Smart Citations

Scale-fragment formation impairing geothermal energy production: interacting H2S corrosion and CaCO3 crystal growth

Boch

Leis²,

Haslinger

et al. 2017

Geotherm Energy

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Section: Carbonate Scaling Versus Corrosionsupporting

confidence: 81%

Section: Sites Samples and Methodsmentioning

confidence: 99%

Section: Conclusion and Environmental And Technical Considerationsmentioning

confidence: 99%

Section: Conclusion and Environmental And Technical Considerationsmentioning

confidence: 99%

See 2 more Smart Citations

Scale-fragment formation impairing geothermal energy production: interacting H2S corrosion and CaCO3 crystal growth

Boch

Leis²,

Haslinger

et al. 2017

Geotherm Energy

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“…Particularly, the region around Munich has benefitted from the rapid geothermal development in recent years. The Upper Jurassic carbonate rock of the north Alpine foreland basin has been the target of numerous geothermal drilling projects [2,3]. Regarding this development, it is clear that geothermal energy has a high potential in Germany.…”

Section: Introductionmentioning

confidence: 99%

Assessment and Public Reporting of Geothermal Resources in Germany: Review and Outlook

2018

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Any geothermal resource assessment requires consistent and widely accepted terminology, methods, and reporting schemes that facilitate the comparison of geothermal resource estimates. This paper reviews common resource assessment methods, as well as reporting codes and terminology. Based on a rigorous analysis of the portrayed concepts and methods, it discusses the appropriateness of the existing reporting codes for sustainable utilization of geothermal resources in Germany. Since the last quantitative geothermal resource assessment in Germany was done 15 years ago, a revised report is overdue. Unlike fossil energy commodities, geothermal energy replenishes naturally and heat recuperation increases in created heat sinks. This replenishment process offers the opportunity for sustainable reservoir management in the case of moderate production rates or cyclic operation. Existing reporting codes, however, regard geothermal resources in a similar way to fossil resources or focus too much on field development rather than on the whole assessment process. In order to emphasize the renewability of geothermal energy, we propose the reporting of geothermal capacities (per doublet or per km 2 ) instead of recoverable heat energy which depends very much on project lifetime and other factors. As a first step, a new classification scheme for geothermal resources and reserves is outlined.

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Initiation and development of normal faults within the German alpine foreland basin: The inconspicuous role of basement structures

2016

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In a large seismic cube within the German Alpine Molasse Basin, we recognize large normal faults with lateral alternating dips that displace the Molasse sediments. They are disconnected but strike parallel to fault lineaments of the underlying carbonate platform. This raises the question how such faults could independently develop. Structural analysis suggests that the faults grew both upward and downward from the middle of the Molasse package, i.e., they newly initiated within the Molasse sediments and were not caused by reactivation of the faults in the carbonate platform and/or crystalline basement. Numerical modeling of the basin proves that temporarily and spatially confined extensional stresses existed within the Molasse sediments but not in the carbonate platform and basement during lithospheric bending. The workflow shown here gives a new and as yet undocumented insight in the tectonic and structural processes within a foreland basin that was affected by buckling and bending in front of the orogen.

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Forecast for thermal water use from Upper Jurassic carbonates in the Munich region (South German Molasse Basin)

Cited by 39 publications

References 9 publications

Scale-fragment formation impairing geothermal energy production: interacting H2S corrosion and CaCO3 crystal growth

Scale-fragment formation impairing geothermal energy production: interacting H2S corrosion and CaCO3 crystal growth

Assessment and Public Reporting of Geothermal Resources in Germany: Review and Outlook

Initiation and development of normal faults within the German alpine foreland basin: The inconspicuous role of basement structures

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