... and diverge with increasing mean effective stress. Seismic attributes of these laboratory waveforms were derived to verify which attributes were most sensitive to changing pore pressure conditions. Positive correlations between effective stress and several instantaneous seismic attributes were established...

.... In those cases where drill cuttings are used the strength and stiffness properties are generally determined indirectly either from indentation or resonant acoustic wave techniques [1]. Strength and deformation properties of clays are known to correlate with a standard geotechnical index parameter...

... the potential to predict petrophysical properties from core material not suited for laboratory testing (e.g., sidewall or damaged core and drill cuttings). Pore size information, NMR response and Formation factor are also calculated on the images. Empirical correlations linking fluid permeability to Formation...

... depths, as the technique will be used not only for surface measurements but also for measurements in the interior (tests at the bottom of a small drilled hole). Such measurements can provide information on stone damage with depth. The results are used to build correlation functions and databases between...

...Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) © 2000 Balkema, Rotterdam, ISBN 90 5809 1554 Correlations between punch test results and rock physical properties Gerald L. Dollinger Bellevue, Wash., USA Howard J. Handewith Seattle, Wash., USA ABSTRACT: A series of punch indentation tests...

... ABSTRACT: A series of thick-walled cylinder (TWC) and unconfined compressive strength (UCS) tests were conducted on dowQhole and surface sandstones. They ranged from poorly/weakly cemented to compe- tent high strength materials. A correlation appears to exist which relates the normalised TWC strength...

... ABSTRACT ABSTRACT : Reasonably good agreement was found between the distribution of conductivity estimated from simulated and actual packer tests. It was also found that the correlation between the block conductivity and conductivity estimates from the simulation of packer test was weak...

... can reflect the irregular geometric characteristic of rock materials, while topothesy can describe the texture property of rock fracture surface. The research results show that there is a better correlation between topothesy and the rock tensile strength than fractal dimension, which the topothesy...

... ABSTRACT: Investigations were performed to explore the possibility of developing correlations between rock mass properties and fracture tensor parameters. The first invariant of the fracture tensor is suggested as an index of rock mass quality. Another fracture tensor parameter is suggested...

... defined as having a spatially variable aperture distribution. hydraulic fracturing flow in porous media Upstream Oil & Gas Fluid Dynamics enhanced recovery waterflooding mobilization correlation saturation dense nonaqueous phase liquid PCE hydraulic aperture hydraulic gradient...

... and calibrate the dynamic mechanical properties so acoustic well logs from other wells can be utilized more effectively in determlning areal and lithologic variation in mechanical properties of the field. Results of the tests show that Young's modulus correlates strongly with lithofacies and porosity...

..., and (3) weathering processes. A correlation between rock properties and durability may improve the results of the exploration efforts. Employment of proper quarrying techniques may result in production of a more durable stone. Knowledge of the relationship between weathering processes and both rock...

... liabilities of highly stress rock around underground excavations. metals & mining Reservoir Characterization Upstream Oil & Gas post-peak behavior structural geology correlation reservoir geomechanics strength compression test brittleness measure brittle rock BIM value Aubertin...