Localization of deformation in fluid-saturated sandstone

Published on Oct 1, 2020in International Journal of Rock Mechanics and Mining Sciences4.151
· DOI :10.1016/J.IJRMMS.2020.104455
Roman Y. Makhnenko12
Estimated H-index: 12
(UIUC: University of Illinois at Urbana–Champaign),
Chunwei Ge1
Estimated H-index: 1
(UMN: University of Minnesota),
Joseph F. Labuz32
Estimated H-index: 32
(UMN: University of Minnesota)
Abstract A laboratory study of inelastic deformation and localization was conducted to evaluate microseismicity and fracture in fluid-saturated rock. Plane strain compression experiments were performed on oil- and water-saturated Berea sandstone under dry, drained, undrained, and quasi-unjacketed conditions. Parameters associated with the elastic and inelastic material response were accurately measured and used in a constitutive model to predict localization of deformation under the drained and undrained conditions. Acoustic emission (AE) activity was recorded and the onset of inelastic response in fluid-saturated rock, similar to dry rock, coincided with an increase in AE rate. Fracture initiation and propagation were successfully monitored by AE locations. Clustering of AE events and the start of inhomogeneous deformation inferred from displacement measurements are shown to be well correlated with the model prediction of the onset of localized deformation under various rock-fluid interaction conditions.
#1Philip Benson (University of Portsmouth)H-Index: 19
#2David Carlo Austria (University of Portsmouth)H-Index: 1
Last. R. Tomas (University of Portsmouth)H-Index: 1
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Abstract Fluid-induced seismicity has been observed and recorded for decades. Seismic energy necessarily requires a source, which is frequently related to rock fracture either in compression or tension. In both cases, such fracture may be promoted by crustal fluids. In this paper, we review some of the advances in the field of fluid-induced seismicity, with a particular focus on the use and application of new and innovative laboratory methods to better understand the complex, coupled, processes ...
7 CitationsSource
#1Ali Tarokh (UIUC: University of Illinois at Urbana–Champaign)H-Index: 8
#2Roman Y. Makhnenko (UIUC: University of Illinois at Urbana–Champaign)H-Index: 12
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#1Evgeny V. Shilko (Tomsk State University)H-Index: 11
#2Andrey V. Dimaki (Institute of Strength Physics and Materials Science SB RAS)H-Index: 12
Last. Sergey G. Psakhie (Tomsk Polytechnic University)H-Index: 28
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This study shows the significant and nonlinear effect of the competition between dilation and fluid flow on the shear strength of constrained shear bands in fluid-saturated rocks. This effect is conditioned by the contribution of the pore pressure to the yield stress and strength. The pore pressure is controlled by the dilation of the pore space in the solid skeleton of the shear band during plastic deformation and by squeezing of pores in surrounding blocks by the dilating shear band due to the...
13 CitationsSource
#1Roman Y. Makhnenko (UIUC: University of Illinois at Urbana–Champaign)H-Index: 12
#2Ali Tarokh (UIUC: University of Illinois at Urbana–Champaign)H-Index: 8
2 Citations
#1Thomas A. Dewers (SNL: Sandia National Laboratories)H-Index: 27
#2Kathleen A. Issen (Clarkson University)H-Index: 14
Last. Mathew Duffy Ingraham (SNL: Sandia National Laboratories)H-Index: 7
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Abstract Results of axisymmetric compression tests on weak, porous Castlegate Sandstone (Cretaceous, Utah, USA), covering a range of dilational and compactional behaviors, are examined for localization behavior. Assuming isotropy, bulk and shear moduli evolve as increasing functions of mean stress and Mises equivalent shear stress respectively, and as decreasing functions of work-conjugate plastic strains. Acoustic emissions events located during testing show onset of localization and permit cal...
6 CitationsSource
#1Tsuyoshi Ishida (Kyoto University)H-Index: 17
#2Joseph F. Labuz (UMN: University of Minnesota)H-Index: 32
Last. Arno ZangH-Index: 25
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Acoustic emission (AE) is defined as high-frequency elastic waves emitted from defects such as small cracks (microcracks) within a material when stressed, typically in the laboratory. AE is a similar phenomenon to microseismicity (MS), as MS is induced by fracture of rock at an engineering scale (e.g., rockbursts in mines), that is, in the field. Thus, seismic monitoring can be applied to a wide variety of rock engineering problems, and AE is a powerful method to investigate processes of rock fr...
41 CitationsSource
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Abstract We studied the effect of fluid injection on the mechanical behaviour of the poorly consolidated and layered Sherwood sandstone under varying stresses, with micro-seismic (MS) monitoring. In order to highlight possible weakening effects, water and inert oil have been injected into critically-loaded samples to assess their effect on strength and elastic properties, derive the ultrasonic signature of the saturation front for each fluid, and the potential development of damage. To this end,...
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#1Xiaying Li (CAS: Chinese Academy of Sciences)H-Index: 11
#2Xinglin Lei (AIST: National Institute of Advanced Industrial Science and Technology)H-Index: 24
Last. Qi Li (CAS: Chinese Academy of Sciences)H-Index: 22
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To investigate the influence of local hydraulic condition on the water injection-induced fracture behavior in tight sandstone, injection tests under triaxial compression were conducted on samples collected from the Sichuan Basin, China. By means of acoustic emission (AE) monitoring, the fracturing behaviors of two samples of different water saturation patterns, partly saturated (the middle part was dry) and fully saturated, are investigated. Experiment results indicate that the local hydraulic c...
12 CitationsSource
#1Roman Y. Makhnenko (UMN: University of Minnesota)H-Index: 12
#2Joseph F. Labuz (UMN: University of Minnesota)H-Index: 32
In situ rock is often saturated with fluid, the presence of which affects both elastic parameters and inelastic deformation processes. Techniques were developed for testing fluid-saturated porous rock under the limiting conditions of drained (long-term), undrained (short-term) and unjacketed (solid matrix) response in hydrostatic, axisymmetric and plane-strain compression. Drained and undrained poroelastic parameters, including bulk modulus, Biot and Skempton coefficients, of Berea sandstone wer...
38 CitationsSource
#1V. B. Lapshin (RAS: Russian Academy of Sciences)H-Index: 1
#2A. V. Patonin (RAS: Russian Academy of Sciences)H-Index: 4
Last. S. M. Stroganova (RAS: Russian Academy of Sciences)H-Index: 3
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A rock behavior experiment with uniaxial compression revealed the effect of acoustic activity in loaded fluid-saturated Berea sandstone samples in response to an electric current. It is established that it is substantially intensified in periods of the current impact and decreases after its cut-off. The current impact also results in a growth of radial deformation indicating an increase in the sample volume. The effect of acoustic activation increases in response to increased heat emitted by the...
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Cited By1
#1Zhiwei He (Jiangxi University of Science and Technology)H-Index: 1
#2Kang Zhao (Jiangxi University of Science and Technology)H-Index: 6
Last. Yufeng Song (Jiangxi University of Science and Technology)H-Index: 2
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Abstract Backfill mining method plays an important role in the treatment of tailings, and the failure law of a cement paste backfill (CPB) and rock combination under pressure has essential guiding significance for the safe production of mines using the backfill mining method. In this work, uniaxial compression acoustic emission (AE) experiments were conducted on single CPB and CPB–rock combinations with different cement tailings ratios, based on referring to fractal theory to investigate the cra...
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