Determining the elastic moduli of the third order for sedimentary rocks based on well-logging data

Guliyev, Hatam H.; Aghayev, Kh. B.; Hasanova, G.

doi:10.1134/s1069351316050062

Cited by 7 publications

(9 citation statements)

References 4 publications

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“…Complex nonlinear problems are reduced to nonclassically linearized problems. This approach is widely used in studies of various problems in geodynamics and geophysics (Guliyev et al, ; Kuliev et al, ), and geomechanical problems are considered within this approach. In particular, Birch diagrams are constructed, and possible complications related to increases in deformation are analyzed below.…”

Section: A Description Of the Datamentioning

confidence: 99%

Once Again on Preliminary Reference Earth Model

Guliyev

Javanshir

2020

Earth and Space Science

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We studied the isotropic ball using data of Preliminary Reference Earth Model (PREM). It is shown that such a ball should be either destructed or gone into a more stable equilibrium state with uneven distributed deformation under thermobaric condition of the inner core. Body elastic waves with real velocities cannot propagate in it. This manuscript is devoted to study the situation from the standpoint of nonlinear geomechanics. A number of necessary principles of Mechanics of Deformable Solid Body (MDSB) is given at the beginning of the analysis. A brief review of the published latest experimental work is performed. It is established that proper attention to the role of the MDSB principles in micro‐scale (nano) experiments of the physical level has not been given. Deformation properties of solid bodies are emphasized in microscale and macroscale. Application of linear acoustoelasticity and extrapolation of Birch's linear law of the inner core and use of an idea on variability of elasticity moduli with the increase of pressure and temperature have contributed to obtained pseudo data for the geological medium of the Earth's core instead of linear data on the physicomechanical properties. It is proposed that parallel to elimination of the indicated disadvantages, collection, processing and interpretation should be performed using nonclassically linearized approach. This set of necessary actions is offered as the “key” of geomechanical analysis. The proper application will allow conducting similar analysis concerning other solid‐state structures of the Earth.

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Section: A Description Of the Datamentioning

confidence: 99%

Once Again on Preliminary Reference Earth Model

Guliyev

Javanshir

2020

Earth and Space Science

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“…and c as a result of the seismic records processing. Here 1 n , 2 n -are combined, buta, band c are the elasticity moduli of the third order (Guliyev et al, 2016;Aleksandrov et al, 2001). The values of moduli of the third order were calculated by the non-classic theory of deformation (Vyzhva et al, 2005;Kuliev, 2000) considering the geostatic pressure in the environment.…”

Section: Definition Of the Physical Properties Of The Environmentmentioning

confidence: 99%

“…The results of studies of the non-linear physicalmechanical properties of some sedimentary rocks shows that the elasticity moduli of the third order are manifold sensitive to the variability of the environment's elastic properties than the moduli of the second order (Bezrodna et al, 2016;Guliyev et al, 2016;Aleksandrov et al, 2001;Vyzhva et al, 2005;Kuliev, 2000).The above mentioned modulus had been used in the present research.…”

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confidence: 96%

Determination of the Physical Properties of Complexly Constructed Media Using Near-Surface Crosswell Method

Guliyev

Aghayev

Mehraliyev³

et al. 2019

VKNUGEOL

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In case when the upper part of the medium has complex geological structure and geodynamic processes occur in it, the necessity of these data increases in projecting of the object under construction. Purpose. Studying of acoustic, elastic and anisotropic properties of the upper part of section of complicatedly constructed geological media. Methodology. Seismic observations are conducted in shallow wells in the areas of construction objects located in various seismogeological conditions by NSCW (Near-Surface Cross Well testing) method. Field seismic records are processed. Kinematic and dynamic parameters of pressure and differently polarized shear waves are determined. Thin-layered one-dimensional models of physical properties of the medium are created and interpreted on the basis of nonlinear theory of elastodynamics. Results. It is determined that the medium with high porous, water saturated rocks and anomalous high reservoir pressure has anomalous low value of velocities and gradient of their increase with depth. When this medium was re-examined after deep piles were built there, the overestimated seismic velocities are obtained, which is explained by a decrease in the section of anomalously high reservoir pressure and, accordingly, the porosity of the rocks after piles were built. When the hollowness is increased in unsaturated pebble rocks, the negative value of Poisson's ratio is obtained on the standard method. Seismic anisotropy related with the direction of the grains packing of the rocks is revealed on velocities of shear waves. The change of property of rocks on depth is manifested clearer on frequencies of waves than on their amplitudes. Scientific novelty. The elasticity moduli of the 3rd order are determined which are more sensible to variability of nonlinear elastic properties of rocks of the medium than the moduli of the 2nd order. The values of Poisson's ratio are recalculated for one and the same rocks located in different conditions of rock pressure on the basis of nonclassical theory of deformation. Practical importance. The obtained results can be applied to study the media characterized by complex seismogeological hydrodynamic conditions with clay-sandy rocks of high porosity and water saturation.

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“…The use of the NLA in tasks of processing and interpretation of results of well-logging operations (WLO) [Guliyev et al, 2016] and seismic explorations [Guliyev et al, 2011] allow obtaining new quantitative results for the kinematic and dynamic parameters of elastic waves [Guliyev, Dzhabbarov, 1998], finding out the reason to obtain large and negative values of Poisson's ratio [Guliyev, 2000] in studies of problems of seismic explorations. It is shown [Guz, 2004] that experimentally observed effects in compressible concerning rigid materials in the theory are well described in case of involving elastic potentials of the Murnaghan type and using «true» velocities.…”

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confidence: 99%

“…The experimental results of these rocks are almost absent for rocks of the sedimentary series [Bayuk et al, 1988]. Exceptions make up results [Bakulin, Protoseniya, 1982;Yin, Rasolofosaon, 1994;Alexandrov et al, 2001;Guliyev et al, 2016]. A theoretical method based on database of wells is proposed for their determination to fill this gap [Guliyev et al, 2016].…”

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confidence: 99%