Experimental Studies of the Influence of Dynamic Loading on the Elastic Properties of Sandstone

Гузев, М. А.; Kozhevnikov, Evgenii; Турбаков, М С; Riabokon, E. P.; Поплыгин, В В

doi:10.3390/en13236195

Cited by 13 publications

(8 citation statements)

References 55 publications

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“…Nonstationary loading of the samples revealed nonlinearity in the behavior of the dynamic modulus of elasticity. Moreover, if in the region of higher frequencies (from 10 Hz to 60 Hz) the test results confirmed the previously obtained dispersion of Young's modulus according to the power law (see, for example, [24][25][26][27][28]), then in the region of low frequencies (less than 10 Hz) it was revealed that Young's modulus changes according to the kind of logarithmic law. Figure 15 shows an example of a dynamic test for the sample 2/6.…”

Section: Dependence Of An Elasticity Modulus On the Dynamic Load Freq...supporting

confidence: 82%

“…Energies 2021, 14, x FOR PEER REVIEW 15 of 20 modulus according to the power law (see, for example, [24][25][26][27][28]), then in the region of low frequencies (less than 10 Hz) it was revealed that Young's modulus changes according to the kind of logarithmic law. Figure 15 shows an example of a dynamic test for the sample 2/6.…”

Section: Dependence Of An Elasticity Modulus On the Dynamic Load Freq...mentioning

confidence: 99%

“…In a more recent work [27] the authors used an experimental setup also reviled the dispersion of the elastic moduli of sandstone and gypsum with increasing frequency. According to studies carried out in [28] on an experimental setup, Young's modulus of a clastic rock (New red sandstone) increases from 10 to 40 Hz in accordance with a power law. However, some earlier works (see, for example, [29]) reported that Young's moduli of Navajo sandstone, Spergen limestone and Oklahoma granite do not depend on the frequency of dynamic loading at a frequency ranging from 4 to 400 Hz.…”

Section: Introductionmentioning

confidence: 99%

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Study of the Influence of Nonlinear Dynamic Loads on Elastic Modulus of Carbonate Reservoir Rocks

et al. 2021

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The paper presents the results of the experimental investigation of carbonate reservoir rocks subjected to quasistatic and nonlinear dynamic loads. During the quasistatic loading the zones of linear elasticity were determined. Dynamic loading of samples was performed at several frequencies and load amplitudes using a testing system. There were two zones found in which the elastic modulus changes nonlinearly in terms of dynamic load frequency. While the frequency of the dynamic load increases from 0 to 10 Hz the dynamic elastic modulus rises according to logarithmic law; while the frequency increases from 10 to 60 Hz elastic modulus rises according to a power law for each load amplitude. The amplitude of the longitudinal strain and phase shift decreases with increasing frequency of the dynamic load. Under the higher strain rates the rock gets stiffer in comparison with rock subjected to smaller strain rate dynamic loading. Saturation of rock samples with distilled water flattening the dependencies of dynamic Young’s modulus on frequency.

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Section: Dependence Of An Elasticity Modulus On the Dynamic Load Freq...supporting

confidence: 82%

Section: Dependence Of An Elasticity Modulus On the Dynamic Load Freq...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study of the Influence of Nonlinear Dynamic Loads on Elastic Modulus of Carbonate Reservoir Rocks

et al. 2021

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“…Several mechanisms of the nonlinear nature of Young's modulus were proposed, as reviewed in [22], but much more experimental research is still required. The results presented in this study are of a major project focusing on investigating the mechanical properties of rocks, the preliminary results of which have been presented in [23].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Young’s Modulus of New Red Sandstone: Experimental Studies

Riabokon

Поплыгин

Турбаков

et al. 2021

Acta Mech. Solida Sin.

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Young’s modulus of New Red Sandstone was investigated experimentally to gain insight into its nonlinear nature. A large experimental programme was carried out by applying a controllable quasi-static and dynamic uniaxial loading to 286 dry sandstone samples of four different sizes. The static and dynamic tests, similar to those aiming at determining the uniaxial compressive strength, were conducted using the state-of-the-art experimental facilities at the University of Aberdeen including a custom-built small experimental rig for inducing a dynamic uniaxial compressive load via a piezoelectric transducer. The obtained results have confirmed a complex nature of Young’s modulus of sandstone. Specifically, under a harmonic dynamic loading, it shows strongly nonlinear behaviour, which is hardening and softening with respect to frequency and amplitude of the dynamic loading, respectively.

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“…The results reported by Kozhevnikov et al [3] and Guzev et al [4] indicated an increase in the Young's modulus of sandstone with increasing values of dynamic load and frequency. Accordingly, an increase RESEARCH NOTE in the frequency of impact leads to the strengthening of rocks and a decrease in the likelihood of the formation of new cracks and voids [5,6].…”

Section: Introductionmentioning

confidence: 99%

Influence of Frequency of Wave Action on Oil Production

Poplygin¹,

Гузев

et al. 2022

IJE

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When elastic waves act on rocks, the structure of the void space changes. The nucleation and formation of new cracks is possible. Wave action technologies are divided into two groups: with a frequency of less than 100 Hz and a frequency of more than 1 kHz. In the intermediate zone, no completed works and studies of wave action were found. The paper studies the results of the impact of elastic waves with different frequencies and amplitudes on oil production. With low-frequency exposure, an increase in permeability values is noted to a greater extent due to the appearance of new and an increase in the size of existing cracks. With high-frequency exposure, the viscosity of reservoir oil is greatly reduced. The greater the value of the initial viscosity, the more intense it decreases when exposed to highfrequency waves. For the Perm Territory, a comparison was made of the results of wave processing of production wells depending on the frequency of exposure. As the impact frequency increases, the average oil recovery after wave treatment decreases. With an increase in the frequency of exposure, the duration of operation of a well with increased oil production after wave treatment decreases. Models have been obtained to predict the time of operation of wells with additional oil production, additional oil production and an increase in oil production rate of wells after wave action. As a result, it can be noted that the most effective technologies are those with a lower frequency, but a large amplitude of exposure.

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Experimental Studies of the Influence of Dynamic Loading on the Elastic Properties of Sandstone

Cited by 13 publications

References 55 publications

Study of the Influence of Nonlinear Dynamic Loads on Elastic Modulus of Carbonate Reservoir Rocks

Study of the Influence of Nonlinear Dynamic Loads on Elastic Modulus of Carbonate Reservoir Rocks

Nonlinear Young’s Modulus of New Red Sandstone: Experimental Studies

Influence of Frequency of Wave Action on Oil Production

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