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Open PDFFracture of Anisotropic Rock E. Hoek South African Council for Scientific and Industrial Research Journal of the South African Institute of Mining and MetallurgyRock Anisotropy
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Open PDFAs to the SCB test, the measured static fracture toughness exhibit very strong anisotropy. ZX shows the highest toughness of 1.78MPa.m1/2, while XY owes the smallest ...Rock Anisotropy
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Open PDFporosity, and rock anisotropy properties in clastic rocks has been recognized (e.g, Liu, 1994, Johnston and Christensen, 1995, Wang, 2002).Rock Anisotropy
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Open PDFRock Properties / Rock Physics Keywords: anisotropy, elastic, rock physics, shear wave, velocity Created Date: 8/9/2010 10:12:02 PM ...Rock Anisotropy
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Open PDF1 INTRODUCTION The effect of the anisotropy of drilled rock formations on deviation tendencies of drilling systems has been observed since a long time, both in ...Rock Anisotropy
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Open PDFintermediate degree of rock anisotropy with Emax/Emin not exceeding 1.7 (Figure 5c). 2.5 Laboratory Testing Testing of Isotropic RocksRock Anisotropy
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Open PDF382 Chinese J. Geophys. Vol.46, No.2 his paper. Many scientiï¬c workers did some researches for anisotropy of resistivity change in rocks in China[4»21].Rock Anisotropy
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Open PDFLi et al. 2 Rock physics for anisotropy has difficulties resolving a reliable, unique anisotropic model in 3-D (Bakulin et al., 2009). To further constrain the ...Rock Anisotropy
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Open PDFvelocity anisotropy of rock cores in wells Gu87 and Gu88, respectively, and the testing interval is 15 . Figure 3 is the reliability evaluation curves.Rock Anisotropy
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Open PDFSeismic Anisotropy What is Seismic Anisotropy? ... If detailed information about the anisotropic rock parameters or velocities are available, they canRock Anisotropy
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Open PDFanisotropy and the concept of rock strength. The stress estimation method we employ herein is adapted from the passive basin equation, alsoRock Anisotropy
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Open PDFPermeability Anisotropy and Seismic Anisotropy Wayne Pennington, Matthias Imhof, Roger Turpening Permeability is a measure of the flow of fluids through a rock, a ...Rock Anisotropy
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Open PDFWeak-Field Magnetic Susceptibility Anisotropy and its Dynamic Measurement By WILLIAM F. HANNA GEOLOGICAL SURVEY BULLETIN 141 Theory of directional properties of rockRock Anisotropy
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Open PDFFinding Finding oil starts with the rocks Rock physics – inversion – pressure prediction – prospect generation and evaluationRock Anisotropy
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Open PDFanisotropy and the concept of rock strength. The stress estimation method we employ herein is adapted from the passive basin equation, alsoRock Anisotropy
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Open PDFrock mass. Rock with obvious anisotropy is slate. Metamorphic phyllite and schist and sedimentary shale also exhibit anisotropy. Inhomogeneity and Anisotropy 45Rock Anisotropy
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Open PDFIncorporation of Geology, Wells, and Rock Physics into Anisotropy Estimation for Seismic Depth Imaging Enables “True Earth Modelâ€* Huyen Bui1, Peck-Hwa David Ng1 ...Rock Anisotropy
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Open PDF242 It demonstrates that different rock types with aligned minerals may be distinguished by measuring their S- wave birefringence if the anisotropy is caused mainly ...Rock Anisotropy
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Open PDF1 INTRODUCTION The strength and deformation behavior of a jointed rock mass is governed strongly by (a) the intact strength of the rock and (b) the presence of joints ...Rock Anisotropy
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Open PDFVol. 151, 1998 P-SH Conversions in Layered Media 673 in measurements made from sedimentary rock samples and for special cases in Þne-layering anisotropy.Rock Anisotropy
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Open PDFanisotropy around a borehole embedded in an anisotropic medium. In their model, the stress-dependent stiffness tensor of anisotropic rocks is calculated using a ...Rock Anisotropy
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Open PDF2. Stresses have an influence on rock anisotropy, when the anisotropy is induced by joints; the degree of anisotropy can be much higher and is influenced by theRock Anisotropy
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Open PDFClass 21 Class 21 –– Introduction to Introduction to Texture and Anisotropy Reading • Chapter 2 in Engler and Randle • Chs. 2-4in4 in Kocks, Tome andTome and WenkRock Anisotropy
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Open PDFPSIncorporation of Geology, Wells, Rock Physics into Anisotropy Estimation for Seismic Depth Imaging Enables “True Earth Modelâ€* Huyen Bui1, Peck Hwa David Ng2 ...Rock Anisotropy
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Open PDFVol. 17 [2012], Bund. Y 3710 anisotropic rock, they are affected significantly by the existence of a weak plane, which is often the transversely isotropic plane[11-17 ...Rock Anisotropy
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Open PDFAnisotropy of sandstone permeability CREWES Research Report Å Volume 14 (2002) 1 ... A sediment or sedimentary rock is defined to be anisotropic with respect toRock Anisotropy
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Open PDFELSEVIER Engineering Geology 37 (1994) 181 197 ~N]fS~N~RING i.~E©L©GY Effects of rock anisotropy and heterogeneity on stress distributionsRock Anisotropy
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Open PDF1.1 Rock Mass Classification and Characterization Current classification approaches, empirical design methods, and rock mass parameter estima-Rock Anisotropy
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Open PDFNur, A., and Simmons, G., 1969, Stress-induced velocity anisotropy in rock: An experimental study: J. Geophys. Res., 74, 6667–6674.Rock Anisotropy
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Open PDF5 MECHANISM ANALYSIS ON THE ANISOTROPY OF ROCK SAMPLES In general, anisotropy of elastic wave propagation can be caused mainly by thin layers, aligned microcracksRock Anisotropy
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Open PDFP-wave VTI Anisotropy Measurements from Long-Offset Data: ... Reliable estimates of anisotropy parameters can lead to rock classification in a similar manner thatRock Anisotropy
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Open PDFrock anisotropy with respect to the ground surface. They also depend on how the rock mass properties and the degree of anisotropy vary with depth. The effect of such ...Rock Anisotropy
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Open PDFPredicting stress-induced anisotropy around a borehole Xinding Fang∗1, Michael Fehler1, ... around a borehole by combining Mavko’s rock physics modelRock Anisotropy
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Open PDFrock anisotropy, phase velocity, energy velocity, time-depth relation Citation: Fa L, Castagna J P, Zeng Z W, et al. Effects of anisotropy on time-depth relation in ...Rock Anisotropy
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Open PDFRock anisotropy is a well-known behavior, and attracts considerable interest in the field of rock mechanics and engineering over the past several decades.Rock Anisotropy
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Open PDFUnderstanding Seismic Anisotropy in Exploration and Exploitation . A one-day course, covering seismic Shear-wave and Converted-wave anisotropy Leon ThomsenRock Anisotropy
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Open PDFA New Method for the Determination of Three-Dimensional Deformation Anisotropy in Rock Specimens By RICHARD A. FARROW CONTRIBUTIONS TO ENGINEERING GEOLOGYRock Anisotropy
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Open PDFSTRENGTH AND STRAIN ANISOTROPY OF OLKILUOTO MICA GNEISS ABSTRACT An anisotropy in the elastic moduli values of intact rock with a ratio of more thanRock Anisotropy
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Open PDFquantitative interpretation and rock property extraction from seismic data. ... [1995] Seismic anisotropy of fractured rock: Geophysics, 60(1), 204–211.Rock Anisotropy
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Open PDFDescriptions of Anisotropy and Hetero-geneity and Their Effect on Ground- ... rock-fluid measurement and interpretation: Ph.D. dis-sertation, Imperial College, London.Rock Anisotropy
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Open PDFThe higher anisotropy indicates that the rock formations in the study area are not symmetrical and aligned in different directions. Therefore there isRock Anisotropy
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Open PDFABSTRACT I have integrated borehole seismic, surface seismic, well log data and lab-based rock physics to estimate the seismic anisotropy of the tight gas reservoir ...Rock Anisotropy
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Open PDFQuantification of Microcrack Anisotropy in Quartzite – A Comparison ... rock material under uniaxial compression, wing cracks occurRock Anisotropy
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Open PDFEnergy companies have been exploring in the Barents Sea for more than 30 years. The Barents Sea has gar-nered significant attention recently with the high-profileRock Anisotropy
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Open PDFDespite its importance, rock anisotropy is still poorly understood. In this study, one specific form of anisotropy is considered, namely transverse isotropy.Rock Anisotropy
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