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Berea Sandstone an overview ScienceDirect Topics

A dry Cold Lake sandstone shows no temperature dependence. However, when the Cold Lake or a Berea sandstones are saturated with heavy oil, the P-wave velocity decreases with increasing temperature. Rock weakening is mostly driven by the decrease of the bulk and shear (heavy oils do have a shear modulus) moduli, which decrease with temperature.

Localization of deformation in fluid-saturated sandstone

Oct 01, 2020 Similarly, a 10% increase in P-wave velocity in Berea sandstone was observed with further axial loading (increase of σ 1). 59, 60 However, after the rock is fully saturated with water, this effect becomes minor: a less than 8% change in P-wave velocity during axial loading is reported for water-saturated Berea sandstone. 23, 61 Moreover, at

Berea Sandstone Wikipedia

Berea Sandstone, also known as Berea Grit, is a sandstone formation in the U.S. states of Michigan, Ohio, Pennsylvania, West Virginia, and Kentucky. It is named after Berea, Ohio. The sandstone has been used as a building stone and is a source of oil and gas. Description. Diagram showing deposition of

Dilatant hardening of fluid-saturated sandstone

conventionaltriaxial compressiontestsonsilicone-saturated Berea sandstone.Forspecimenstested at 10MPa effective confinement, the peak stress was 25% larger when the strain rate was increased from 2×10 4 to 2×10 3s 1, but the same increase in the strain rate at

Effects of partial liquid/gas saturation on extensional

Nicola Tisato, Beatriz Quintal, Measurements of seismic attenuation and transient fluid pressure in partially saturated Berea sandstone: evidence of fluid flow on the mesoscopic scale, Geophysical Journal International, 10.1093/gji/ggt259, 195, 1, (342-351), (2013).

Microstructural Imaging of Shock-Recovered Berea Sandstone

Berea sandstone for different conditions: dry, water-saturated, hydrostatically water-pressurized and Helium gas-pressurized. We also conducted experiments with purified quartz sand in dry and water-saturated conditions with a grain size between 212 to 250 µm and 250 to 300 µm to compare with damaged Berea sandstone.

Field Guide to Berea Sandstone Outcrops in the Black River

Berea Sandstone at 12 stops along the Black River in Elyria, OH (Figs. 1, 2). Using informal names, the Elyria section comprises Berea Sandstone, over red "Red Bedford" Shale, over grey Bedford Shale (with siltstones), over Cleveland Shale (Fig. 3). Their ages are slightly uncertain. The Devonian/ Mississippian boundary has been placed at the

Saturation of Porous Rock and Measurement of the B coefficient

on Berea sandstone to investigate the parameters that govern its poroelastic and inelastic response. This paper saturated with water, then the pore fluid in the nearly saturated ( S > 0.95) soil or rock is a mixture of water and gas that has a fluid bulk modulus K. Several studies

Microbial penetration through nutrient-saturated Berea

Microbial penetration through nutrient-saturated Berea sandstone

Elastic-wave attenuation in fluid-saturated Berea Sandstone

In a previous publication (O'Hara, 1985), I presented detailed measurements on the attenuation of elastic waves in fluid-saturated Berea sandstone. These measurements were used in a systematic empirical study of the frequency dependence of attenuation as a function of external pressure applied to the sandstone, pore fluid pressure, and the

Microbial Penetration through Nutrient-Saturated Berea

ablerock(e.g., consolidated sandstone). Thepurposeofthis study was to examine the kinetics of microbial growth in relation to microbial penetration times through a consoli-dated Berea sandstone core. It is shown that relationships existbetweenpenetration time, penetration rate, permeabil-ity, andcore length. Furthermore, these relationships allow

Dilatant hardening of fluid-saturated sandstone

Techniques were developed for testing fluid-saturated porous rock under the limiting conditions of drained, undrained, and unjacketed response. Confined compression experiments, both conventional triaxial and plane strain, were performed on water-saturated Berea sandstone to investigate poroelastic and inelastic behavior.

Dynamic behavior of Berea sandstone for dry and water

A dry sandstone cube and a 90% water-saturated sandstone cube (Seeberger Sandstein, 20 cm side length, about 23% porosity) were impacted at the Fraunhofer EMI acceleration facilities by 2.5 mm

Dilatant hardening of fluid-saturated sandstone

conventionaltriaxial compressiontestsonsilicone-saturated Berea sandstone.Forspecimenstested at 10MPa effective confinement, the peak stress was 25% larger when the strain rate was increased from 2×10 4 to 2×10 3s 1, but the same increase in the strain rate at

Microstructural Imaging of Shock-Recovered Berea Sandstone

Berea sandstone for different conditions: dry, water-saturated, hydrostatically water-pressurized and Helium gas-pressurized. We also conducted experiments with purified quartz sand in dry and water-saturated conditions with a grain size between 212 to 250 µm and 250 to 300 µm to compare with damaged Berea sandstone.

An experimental study on the rate and mechanism of

(k) of the Berea sandstone under saturated conditions was determined by a constant-head permeability test (Yokoyama 2013). The value of k was 2.16×10−13 m2 at 20.2–20.6 °C, which was determined by Darcy’s law, as follows: Q A ¼ k μ ΔP L; ð5Þ where Q is the flow rate (1.13×10−8 m3/s), A is the cross-sectional area of the rock (5

Experimental measurements of the streaming potential and

Berea sandstone saturated with NaCl solutions of different conductivities. We present the laboratory set-up for quan-titative measurements of the seismoelectric voltage induced with single or multi-cycle sine bursts after the acoustic pres-sures are quantitatively calibrated. The DC streaming poten-

Measurement of electrical impedance of a Berea sandstone

Complex electrical impedance measurements were performed on a brine-saturated Berea sandstone core while oil and CO 2 were injected at different pressures and temperatures. The saturations of brine, oil, and CO 2 in the core were simultaneously estimated using an X-ray computed tomography scanner. The formation factor of this Berea core and the resistivity indexes versus the brine saturations

Effect of CO2 Injection on Mechanical Properties of Berea

There is comparably less data available on the mechanical response of CO 2 -saturated Berea Sandstone and the study from Oikawa et al. (2008) suggests that the difference in

Localization in Plane Strain Compression of Fluid

water-saturated Berea sandstone to determine its poroelastic and inelastic properties and to observe localization in drained and undrained plane strain compression. 2 Background Rudnicki and Rice [6] suggested a constitutive description that is compatible with boundary conditions for homogeneous deformation but non-uniform deformation in a

Special Section: Scaling in Soil Diff usivity and Sorp vity

ity for a saturated Berea sandstone core, determined using pore water pressure oscillations. However, their estimated value of 3 × 10 4 mm2 s−1 (or 4.48 in log scale units for comparison with Fig. 7) was only for a single volumetric water content (of 0.23 m 3m−3), well outside the unsaturated range considered here. Other than the study by

Saturation of porous rock and measurement of the B

A process to saturate Berea sandstone is presented. Skempton's B coefficient was measured at each increment of back pressure while keeping the effective mean stress approximately the same. A B-value that was constant and independent of the magnitude of the back pressure indicated full saturation.

Microbial penetration through nutrient-saturated Berea

Microbial penetration through nutrient-saturated Berea sandstone

Elastic-wave attenuation in fluid-saturated Berea Sandstone

In a previous publication (O'Hara, 1985), I presented detailed measurements on the attenuation of elastic waves in fluid-saturated Berea sandstone. These measurements were used in a systematic empirical study of the frequency dependence of attenuation as a function of external pressure applied to the sandstone, pore fluid pressure, and the

Electrical conductance of a sandstone partially saturated

Abstract. Electrical conductance G at 100 kHz of Berea sandstone initially saturated with varying NaCl concentrations was measured by an impedance meter at dec

Dilatant hardening of fluid-saturated sandstone

Techniques were developed for testing fluid-saturated porous rock under the limiting conditions of drained, undrained, and unjacketed response. Confined compression experiments, both conventional triaxial and plane strain, were performed on water-saturated Berea sandstone to investigate poroelastic and inelastic behavior.

Dilatant hardening of fluid-saturated sandstone

conventionaltriaxial compressiontestsonsilicone-saturated Berea sandstone.Forspecimenstested at 10MPa effective confinement, the peak stress was 25% larger when the strain rate was increased from 2×10 4 to 2×10 3s 1, but the same increase in the strain rate at

Microstructural Imaging of Shock-Recovered Berea Sandstone

Berea sandstone for different conditions: dry, water-saturated, hydrostatically water-pressurized and Helium gas-pressurized. We also conducted experiments with purified quartz sand in dry and water-saturated conditions with a grain size between 212 to 250 µm and 250 to 300 µm to compare with damaged Berea sandstone.

An experimental study on the rate and mechanism of

(k) of the Berea sandstone under saturated conditions was determined by a constant-head permeability test (Yokoyama 2013). The value of k was 2.16×10−13 m2 at 20.2–20.6 °C, which was determined by Darcy’s law, as follows: Q A ¼ k μ ΔP L; ð5Þ where Q is the flow rate (1.13×10−8 m3/s), A is the cross-sectional area of the rock (5

Publications Induced rough fracture in Berea sandstone

The experiment was performed in Berea sandstone cores with a single longitudinal fracture. The artificially created fracture was oriented parallel to the natural bedding of the rock. The sample was initially vacuum saturated with water, and oil was later injected through the longitudinal crack.

Laboratory measurements of seismic attenuation in

fluid-saturated rocks. We experimentally measured attenua-tion in the extensional mode in Berea sandstone at strains between 7.8×10−7 and 1.9×10−5, and at frequencies in the seismic bandwidth (1–100 Hz). These strains were sim-ilar to those typically observed in seismic exploration (∼10−6). We also measured the transient fluid pressure

Velocity dispersion and wave attenuation of Berea

Berea sandstone is a sedimentary rock whose predominant mineral is quartz. It also includes feldspar and extremely small amount of dolomite and clay minerals (Table.1). In the SEM image (Fig.3), the grain size is about 0.12 mm and the pore size is around 0.03 mm. Table.1. Mineralogy of Berea sandstone sample . unit: weight fraction . Quartz K

Multiphase Flows in Sandstones Project Digital Rocks

Three water-wet sandstone types (Bentheimer, Berea, and Leopard) at different multiphase (air and brine) saturation conditions; including dry (irreducible water saturation), and partially drained. Data was acquired at the Australian National University CTLab, and

Measurements of seismic attenuation and transient fluid

We used a Berea sandstone sample partially saturated with water. The laboratory results suggest that wave-induced fluid flow on the mesoscopic scale is dominant in partially saturated samples. A 3-D numerical model representing the sample was used to verify the experimental results.

Microbial Penetration through Nutrient-Saturated Berea

Penetration times and penetration rates for a motile Bacillus strain growing in nutrient-saturated Berea sandstone cores were determined. The rate of penetration was essentially independent of permeabilities above 100 mdarcys and rapidly declined for permeabilities below 100 mdarcys. It was found that these penetration rates could be grouped into two statistically distinct classes consisting