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Isotropic elastic properties of minerals

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Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 1–3, 2016
Paper Number: URTEC-2435354-MS
... to calculate the elastic properties of different shale samples. The results demonstrate that P- and S-wave velocities vary under isotropic stress conditions with respect to the TOC and clay mineral content. It is shown that isotropic stress significantly impacts velocity and the velocities of P- and S-waves...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17784649
... measurements have shown that these rocks have siliceous cement in which all other minerals are located. There is no directional orientation of the grains in these rocks, so we assume that there is no anisotropy of the elastic properties in the rock type 3. The microstructure of the rock types of the Bazhenov...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1177
... physics predictions and measurements isotropic (equations 11). Elastic moduli of isotropic single crystals satisfy the inequalities for isotropic media (Figure 1). For spherical inclusions, the elastic properties determined from isotropic SC rock physics models agree well with elastic properties...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-0159
... (clay content = 62%), and Red bed member shale (clay content = 11.5%); for the modeling in which the clay minerals are mostly illite (87 %). The modeling has been carried out in mainly three steps: (a) define the clay matrix properties, K and µ for isotropic matrix, and five independent elastic...
Proceedings Papers

Paper presented at the ISRM 8th International Symposium Geomechanics, May 6–10, 2019
Paper Number: ISRM-ISG-2019-02
.... The porosity also affects the Poisson ratio; this behavior can vary assuming different mineral mixtures. An intrinsic anisotropy model was built to define elastic properties and stresses for vertically transverse isotropic (VTI) media. Young s modulus and Poisson's ratio were obtained in horizontal...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2994785
... , 2012 , How does water near clay mineral surfaces influence the rock physics of shales? : Geophysical Prospecting , 65 , 1615 – 1629 , 10.1111/1365-2478.12503 . Mondol , N. H. , J. Jahren , K. Bjørlykke , and I. Brevik , 2008 , Elastic properties of clay...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-0212
... than isotropic dual porosity (IDP) model. With the oil and gas exploration gradually extending to the complex areas, geological structures become more complex, which induces obvious anisotropic in elastic properties of rock. Establishing an anisotropic effective model for the shaly sandstones...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0114
... anisotropy and the elastic anisotropy of clay minerals Colin M. Sayers* and Lennert D. den Boer, Schlumberger Summary As shales are usually anisotropic, models that neglect this anisotropy may lead to incorrect estimates of rock and fluid properties derived from inversion of seismic amplitude versus offset...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3213946
... ABSTRACT The elastic velocity and anisotropy of shales are significantly affected by the orientation distribution of clay minerals including mica. A lot of research has been done on elastic properties of clay and clay aggregates with varying degree of the platelet preferred orientation...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17751502
...: 10:35 AM Location: 360D Presentation Type: ORAL anisotropy modeling sunrise petrosolution tech annual meeting basin simulation seg seg international exposition elastic property flow in porous media simulation clay mineral thomsen reservoir characterization shale effective medium...
Proceedings Papers

Paper presented at the SPWLA 57th Annual Logging Symposium, June 25–29, 2016
Paper Number: SPWLA-2016-GGGG
... remain constant. However, these properties might vary depending on the distribution and size of that particular component, as well as its adjacent minerals. Furthermore, there is a significant uncertainty in elastic properties of kerogen. The uncertainty associated with the aforementioned parameters...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17790635
... is constructed. Thus, there is a need to understand the effect of different rock components and geological processes on the elastic properties. Several studies have focused on this subject in recent years. For example, Zhu et al. (2012) modeled shale gas reservoirs as isotropic media using inclusion models...
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-2750
... In the analysis presented above, the clay particles are assumed to be isotropic. However, because clays are layered minerals, it is expected that the theoretical model of equations 4-7 may give a reasonable representation of the elastic anisotropy for clay minerals, with NB and TB representing the normal...
Proceedings Papers

Paper presented at the 1993 SEG Annual Meeting, September 26–30, 1993
Paper Number: SEG-1993-0786
... ABSTRACT No preview is available for this paper. upstream oil & gas concentration structural geology elastic property particle shale clay platelet distribution function orientation approximation solid phase conductivity mineral porosity reservoir characterization...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2985365
... of rock s elastic properties at each core scale; (2) classification of the rock as anisotropic (containing many ordered heterogeneities) or isotropic but heterogeneous (containing only a few heterogeneities); and (3) estimation of the rock s property similarity at different scales. At each core scale...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-1023
..., it is fair enough for us to believe the anisotropy of particles in shales is very small compared to the anisotropy caused by the alignment of clays. Therefore, we assume isotropic features for all particles in shales, which provides us with a facility for calculating the elastic properties of the mineral...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13777643
... perfectly be determined by other TI elastic constants for a layered medium consisting of isotropic layers. Therefore, d can be predicted from the other Thomsen parameters with confidence. The anisotropic properties of the interbedding system of shales and isotropic sedimentary rocks are primarily controlled...
Journal Articles
J Can Pet Technol 42 (09).
Paper Number: PETSOC-03-09-discussion
Published: 01 September 2003
... on the loading conditions. When oil sand material is subjected to isotropic loading (Stress change equal in all directions), individual particles will generally deform in an elastic manner, with the possibility of grain crushing at high stresses, but the bulk mass of oil sands will undergo both elastic...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3198626
... by their elastic stiffness tensor, volume fraction, and aspect ratio. The elastic stiffness tensors of clay minerals are taken from published quantum mechanical calculations. Clay matrix anisotropy varies with the properties of the inter-platelet medium and the assumed properties of the clay platelets. Although...
Proceedings Papers

Paper presented at the 2003 SEG Annual Meeting, October 26–31, 2003
Paper Number: SEG-2003-0149
.... In this contribution modelling of the intrinsic elasticity of shales was based on information about the texture of shales with knowledge of elastic properties of the constituent minerals. The textural properties of shales were quantitatively described by an orientation distribution function (ODF). The method...

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