To the description of the temperature and pressure dependences of the thermal conductivity of sandstone and ceramics

Emirov, S. N.; Beybalaev, V. D.; Гаджиев, Г. Г.; Ramazanova, A. E.; Amirova, A. A.; Aliverdiev, A. A.

doi:10.1088/1742-6596/891/1/012335

Cited by 5 publications

(10 citation statements)

References 8 publications

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“…The resulting curve is very close to the one based on the Somerton (1992) correction and shows a trend similar to the T correction of Emirov et al (2017), who measured one type of sandstone. The study of Emirov et al (2017) considers the p/T dependency of λ in one experimental setup. The authors developed a rock-specific correction function to λ, involving both T and p (see later in text).…”

Section: Comparison Of Correction Functionssupporting

confidence: 83%

“…. 4); λ(p,T)-combined correction of λ by correcting firstly for p and secondly for T, λ(T,p)-combined correction of λ by correcting firstly for T and secondly for p; λ(p + T)-combined correction of λ by adding the single p/T correction effects (correction formulas for all ways as denoted in Table 2, rock-specific sedimentary scenario); λ(EM)-using the correction formula of Emirov et al (2017) for p and T below 400 MPa and 573 K, respectively, otherwise as denoted in Table 2; λcorrection like λ(p,T), but ignoring the salt-specific correction formula for the rock salt layer (unit) and using sediments VS and rocks FF for T and p correction, respectively, instead…”

Section: Resultsmentioning

confidence: 99%

“…In Fig. 1, the graphs of the p/T corrections of Emirov et al (2017) were calculated for an increase of either T or p. Salt rocks display a special thermal behavior: here, a very strong T dependency of λ is observed (shown in the inset graph in Fig. 1a).…”

Section: Comparison Of Correction Functionsmentioning

confidence: 99%

“…The p domain applicable to the crust covers values < 1 GPa. In this range, λ increases steeply (in an exponential fashion) from ambient conditions towards a pressure of 50-100 MPa (see Hurtig and Brugger 1970;Emirov et al 2017, and in the compilation by Fuchs and Förster 2014). At higher pressures, λ increases gently in a linear fashion.…”

mentioning

confidence: 90%

“…Usually, p and T dependencies of λ are measured separately. Only few data on limited rock types are available, where λ was measured simultaneously as a function of p and T (Abdulagatov et al 2006;Emirov et al 2017). Perhaps this is one reason why corrections to in situ λ are often ignored in thermal modeling (e.g., in the lithosphere thermal models of Noack et al 2010;Przybycin et al 2015;Freymark et al 2017).…”

mentioning

confidence: 99%

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Temperature and pressure corrections applied to rock thermal conductivity: impact on subsurface temperature prognosis and heat-flow determination in geothermal exploration

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Section: Comparison Of Correction Functionssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Section: Comparison Of Correction Functionsmentioning

confidence: 99%

mentioning

confidence: 90%

mentioning

confidence: 99%

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Temperature and pressure corrections applied to rock thermal conductivity: impact on subsurface temperature prognosis and heat-flow determination in geothermal exploration

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Thermal Conductivity Temperature-Pressure Dependence of Rocks and Ceramics

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From pilot knowledge via integrated reservoir characterization to utilization perspectives of deep geothermal reservoirs: the 3D model of Groß Schönebeck (North German Basin)

2023

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The Groß Schönebeck site in the North German Basin serves as research platform to study the geothermal potential of deeply buried Permian reservoir rocks and the technical feasibility of heat extraction. The structural setting of the site was investigated in more detail by a newly acquired 3D-seismic survey to improve the former conceptual model that was based on several old 2D seismic lines. The new data allow a revision of the geological interpretation, enabling the setup of a new reservoir model and providing base information for a possible further site development of Permo-Carboniferous targets. The 3D seismic allows for the first time a consistent geological interpretation and model parameterization of the well-studied geothermal site. Main reflector horizons and the corresponding stratigraphic units were mapped and the structural pattern of the subsurface presented in the 8 km × 8 km × 4 km large seismic volume. Attribute analysis revealed some fracture and fault patterns in the upper Zechstein and post-Permian units, while formerly hypothesized large offset faults are not present in the Rotliegend reservoir. However, a well-established graben-like structure at the top of the Zechstein succession is most likely related to broken anhydritic brittle intra-salt layers of some meter of thickness. Most reflectors above the salt show a rather undisturbed pattern. The main reservoir sandstone of the Dethlingen Formation (Rotliegend) was mapped and characterized. The base of the underlying Permo-Carboniferous volcanic rock sequence and hence its thickness could not be depicted reliably from the geophysical data. Based on the seismic data and the available reconnaissance drilling, logging, and laboratory data of the Groß Schönebeck research site, the thickness and distribution of the sedimentary Rotliegend (with emphasis of the sandy reservoir section) and of the volcanic rock sequence was modelled and stochastically parameterized with petrophysical properties guided by seismic facies pattern correlation, providing a more realistic reservoir description. Properties include total and effective porosity, permeability, bulk density, thermal conductivity, thermal diffusivity, and specific heat capacity. The data and interpretation constitute the basis for a better understanding of the thermo and hydromechanical processes at the site and for future measures. Further site development could include a deepening of one well to provide evidence on the volcanic rock sequence and consider deviated wells into favourable zones and the design of a fracture-dominated utilization approach.

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To the description of the temperature and pressure dependences of the thermal conductivity of sandstone and ceramics

Cited by 5 publications

References 8 publications

Temperature and pressure corrections applied to rock thermal conductivity: impact on subsurface temperature prognosis and heat-flow determination in geothermal exploration

Temperature and pressure corrections applied to rock thermal conductivity: impact on subsurface temperature prognosis and heat-flow determination in geothermal exploration

Thermal Conductivity Temperature-Pressure Dependence of Rocks and Ceramics

From pilot knowledge via integrated reservoir characterization to utilization perspectives of deep geothermal reservoirs: the 3D model of Groß Schönebeck (North German Basin)

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