Vp/Vs Automatic Picking of Ultrasonic Measurements and their Correlation of Petrographic Coded Carbonates from Austria

Gegenhuber, Nina; Steiner-Luckabauer, C.

doi:10.3997/2214-4609.20148690

Cited by 9 publications

(5 citation statements)

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“…It is based on the assumption, that a measurement can be divided into locally stationary segments, whereby the sections before and after the onset of a specific wave form indicate two different stationary processes. A phase onset can be identified by the position where the AIC-values show a minimum in the least square sense (Gegenhuber and Steiner-Luckabauer, 2012). gives an overview of the measured v p and v s data for the three rock types (dry and brine-saturated).…”

Section: Measurement Methodsmentioning

confidence: 99%

Rock physics template from laboratory data for carbonates

Gegenhuber

Pupos

2015

Journal of Applied Geophysics

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Section: Measurement Methodsmentioning

confidence: 99%

Rock physics template from laboratory data for carbonates

Gegenhuber

Pupos

2015

Journal of Applied Geophysics

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“…The signal is further sent to a storage oscilloscope and stored as text file on the computer. The further interpretation is done with a self-made MATLAB code (Gegenhuber and Steiner-Luckabauer 2012).…”

Section: Measuring Methodsmentioning

confidence: 99%

Correlation and interpretation of thermal properties of volcanic rocks from Austria

Gegenhuber

Dertnig

2022

Acta Geophys.

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Thermal properties of rocks are of great importance not only for geothermal projects. The focus of petrophysical data presented here is laid mainly on volcanic rocks. Thermal properties include not only thermal conductivity but also heat production and heat capacity. A full range of dataset and analysis out of it is presented here. The target of this study is to deliver new insights in the thermal properties of volcanic rocks of Austria. The focus is laid on thermal conductivity—understanding of influencing factors and correlations with other properties, like compressional wave velocity, electrical resistivity or radiogenic heat production. Therefore, a set of data from various volcanic rocks of Austria is presented, analysed in detail and new correlations are presented. The correlations can be further applied on logging data to derive thermal properties in the field. These improved correlations and further interpretations can help in planning geothermal projects and can improve the output of simulations because of the better input data.

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“…The arriving signal got forwarded to a storage oscilloscope and a computer. A self-made program (Gegenhuber and Steiner-Luckabauer 2012) detected the first arrival of the two wave modes and calculated the wave velocities (v p and v s ) with the length of the specimen and including dead time. The dead time is the time of the signal through the probes without any sample.…”

Section: Measuring Methodsmentioning

confidence: 99%

Linking static and dynamic mechanical properties for metamorphic rocks from Austria including their anisotropic effect

Gegenhuber

Krueger

2021

Acta Geophys.

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The derivation of geomechanical properties from petrophysical/geophysical data is not only of great importance in the oil industry but also in mining, geothermal projects and tunnelling, for reduction of costs and to improve security. For the oil industry and geothermal sector, it is mainly important for drilling rate and the stability of the borehole and, as a result, the economic factor. A key issue is that geomechanical properties, which can support a better planning of a project, cannot be measured in the borehole or on the surface directly. In this study, the focus is put on anisotropic effects on the correlation between static and dynamic properties, which is neglected in most studies but important because values can vary extremely. Therefore, measurements in the geotechnical laboratory of compressional and shear wave velocity during uniaxial compression strength test were taken. Additionally, typical properties like bulk and grain density as well as porosity were determined too. Different samples (carbonate–silica schist, marble and phyllite) from the "Zentrum am Berg"-research tunnelling centre at the "Erzberg" in Austria were used. Shown are correlations between uniaxial compression strength and compressional wave velocity as well as for static and dynamic Young’s modulus including their anisotropic effect. The results are promising and provide an opportunity for further applications on log data.

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Vp/Vs Automatic Picking of Ultrasonic Measurements and their Correlation of Petrographic Coded Carbonates from Austria

Cited by 9 publications

References 0 publications

Rock physics template from laboratory data for carbonates

Rock physics template from laboratory data for carbonates

Correlation and interpretation of thermal properties of volcanic rocks from Austria

Linking static and dynamic mechanical properties for metamorphic rocks from Austria including their anisotropic effect

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