... tunnels to determine similarities and differences. reservoir characterization structural geology gotschna tunnel road tunnel reservoir geomechanics upstream oil & gas correlation counter pressure mpa sulphate-bearing rock ground transportation steiner eurock 2020 heave lining...

... porosity, density and penetration rate. For prediction of UCS, artificial neural networks were developed between UCS and input data resulting a practical correlation. In this research, a long well segment possessing complete and continuous data coverage has been analysed, and collected data of the wellbore...

... conditions, and thus the potential for dynamic loads. Reservoir Characterization Upstream Oil & Gas metals & mining strength standardized regression coefficient coefficient machine learning structural geology correlation pillar factor safety Maleki mechanics Artificial...

... or similar classification systems in providing an accurate estimation of TBM penetration rate has had limited success due to the nature of the weights assigned to the input parameters. The results of many investigations on this topic have shown a weak correlation between TBM penetration rate and RMR...

... elasticity machine learning fuzzy logic input parameter procedia engineering 191 dry density correlation uniaxial compressive strength genetic algorithm expression programming Gene Expression Programming equation gep method Reservoir Characterization Upstream Oil & Gas behnia algorithm...

... aggregates. Present study shows the correlation between these important parameters of the rock and tries to propose an empirical equation so that one property can be determine from the others by applying this empirical equation. To estimate the good correlation between the properties of rocks, different...

... is laboratory rock cutting tests. For half a century, numerous researchers studied on various aspects of rock cuttability. Some of them tried to correlate different rock properties with outcomes of rock cutting tests to determine rock cuttability empirically. Some other studied on effects of different...

... was investigated. Strong and significant linear correlations were found between the CI and both the UCS and BTS. It is concluded that the UCS and BTS of rock can be estimated from the CI. The suggested method is especially useful for the drilling industry and for the cases where there are not enough...

... investigated in detail. This paper focuses on UCS/BTS ratio using the raw data pertaining to 1842 rock types from different research institutes. Regression analysis indicated that power law or exponential relations offers a better best fit correlation between UCS and BTS for each data set from different...

... strong correlation with texture coefficient and mean grain size; on the other hand, it has moderate or weak correlations with physico-mechanical properties. 1 INTRODUCTION Natural stone is the oldest construction material used by man. From ancient times until today, natural stones have played...

... correlation Reservoir Characterization reservoir geomechanics rock pillar strength Rock mechanics Upstream Oil & Gas uniaxial compressive strength dimension specimen discontinuity compressive strength rock mass equation Ayre da Silva pillar shape effect São Paulo Rock Mechanics...

... was recorded. The rock quality designation (RQD), uniaxial compressive strength (UCS), Brazilian tensile strength (BTS), density (ρ), Schmidt hammer hardness (SHH), Shore Scleroscope hardness (SSH), and Cerchar abrasivity index (CAI) were realized for each zone. Next, the correlations between each possible...

... geomechanics machine learning Upstream Oil & Gas correlation prediction tbm performance prediction tunnel structural geology RMR performance prediction penetration rate maroshi-ruparel water supply tunnel strength TBM performance database estimation Engineering FPI classification system...

... during the construction phase of the Bátaapáti radioactive waste repository. Examinations of the values determined on-site gave significantly different results. Different correlations were determined between the calculated GSI values. 1 INTRODUCTION The Geological Strength Index (GSI ) represents...

... frequencies of the investigated volume. Ground motion at these frequencies was found to be controlled by the main fractures observed at the site and numerical modelling is currently under development for geomechanical and modal analysis of the site. Both spectral analysis and cross-correlation of seismic...

... was to develop a method for evaluation of rock strength in various type and size boreholes to assess in-situ rock strength. Upstream Oil & Gas cutter penetration depth Reservoir Characterization scratch test correlation Detournay strength RSBP rock strength borehole wall Probe University...

... engineering projects. The presence of vesicles within basaltic rocks has a direct impact on the uniaxial compressive strength (UCS) of the rock material. construction materials correlation laboratory test basalt Rock mechanics porosity value strength basaltic rock Image analysis Technique...

... index (DRI) agreed well with uniaxial compressive strength. This confirmed that the results of mechanical properties based on UCS have a high level of reliability while evaluating the drillability. Nevertheless, the results of DRI did not represent any correlation versus Young's modulus during blasthole...

...) give a good overview and introduction on the topic, from the basic physical background to measuring methods and results. Many papers can be found focusing on a correlation between petrophysical and geomechanical properties, the measurements themselves or models for a derivation of geomechanical...

... throughout the weathering processes. The porosity tends to growth according to the rock weathering degree. Its increase corresponds to a decrease of the ultrasonic velocity and rock density. Considering the totality of the specimens tested, moderate correlation coefficient was found between the longitudinal...