berea sandstone cycle

Supercritical CO2 core flooding and imbibition in Berea ...
2011-1-1 · This paper reports a numerical simulation study of a full CO 2 core flooding and imbibition cycle on a Berea sandstone core (measured 14.45 cm long and 3.67 cm in diameter). During the test, supercritical CO 2 (at 10 MPa and 40 °C) and CO 2-saturated brine was injected into one end of the horizontal core and a X-ray CT scanner (with a resolution of 0.35 mm ×
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Permeability variations in Berea and Vosges sandstone ...
1995-10-1 · For Berea sandstone, the combined effect of the temperature and concentration cycles resulted in a decrease of 75% in permeability, and for Vosges sandstone in an increase of 32%. Berea sandstone The variations of the ratio k/ko versus temperature show two different behaviours for Berea sandstone (Fig. 7).
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Berea sandstone core pore size distribution
This paper reports a numerical simulation study of a full CO2 core flooding and imbibition cycle on a Berea sandstone core (measured 14.45 cm long and 3.67 cm in diameter). During the test ...
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Effect of Cyclic Formation-Pressure Changes on ...
For Berea sandstone, the results obtained using a pressurization cycle duration of 60 minutes are shown in Fig. 5. It is noted here that no change in permeability was observed for cycle durations of less than 60 minutes. From Fig. 5, it can be seen that the pressurization of the core resulted in a reduction in its permeability. SPERE. P. 91^
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Micro-mechanical analysis of the effects of stress cycles ...
2020-10-1 · The received sandstone samples are cut cylindrically with a length to diameter ratio of ~2:1 for Berea sandstone and ~1.5:1 for Tight sandstone ().The ends of the cylindrical samples are ground flat with a tolerance of ±2.5 × 10 −3 cm. The cylindrical samples, then, are placed in an oven for 24 h by keeping the temperature of 65 °C to realize a relatively dry condition.
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Predictive pore‐scale modeling of two‐phase flow in mixed ...
2004-7-15 · The trend in oil recovery from a series of mixed wet Berea sandstone cores [Jadhunandan and Morrow, 1995] was well predicted by closely reproducing the experimental conditions such as S wi and saturation history. The focus of this work is not so much on obtaining a quantitative match with the experiments, but rather on understanding the pore ...
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Pore-scale modelling and sensitivity analyses of hydrogen ...
2021-4-16 · Additional cycles of injection and production of hydrogen into the network of Berea sandstone are also investigated and provided in the supplementary material. ...
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Measurement of the electrokinetic potential at reservoir ...
1999-12-1 · Fig. 3 and Table 1 represents Berea sandstone zeta potentials from streaming current data (ζ I s) in KCl solutions together with apparent zetas from streaming potentials (ζ V s).The potentials by streaming current were calculated after obtaining the pores A/L ratio of Berea cores as described above. The plot gives a convenient opportunity for illustrating the influence of
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基于数字岩心和孔隙网络模型的微观渗流模拟研究进展
2017-8-19 · Fig.8 The Berea sandstone relative permeability of experimental and predicted (Yan G L,2013) 4 结论 4.1 随着CT扫描等微观成像技术的发展,研究人员建立的孔隙网络模型越来越接近实际岩心的孔隙结构,对孔隙模型几何形状和物理性质的非均质性研究也越来越多 ...
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A comparative study of the stress-dependence of
2019-12-17 · sandstone, which might be attributed to the much larger porosity of Berea sandstone. from the very beginning to the peak pressure. When the . Figure 1: The volumetric strain (ε vol) as a function of the mean stress (σ mean) in a load-unload cycle for (a) Idaho Gray sandstone, (b) Berea sandstone, and (c) Tight sandstone.
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Supercritical CO 2 core flooding and imbibition in Berea ...
This paper reports a numerical simulation study of a full CO2 core flooding and imbibition cycle on a Berea sandstone core (measured 14.45 cm long and 3.67 cm in diameter).
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Effect of Cyclic Formation-Pressure Changes on ...
For Berea sandstone, the results obtained using a pressurization cycle duration of 60 minutes are shown in Fig. 5. It is noted here that no change in permeability was observed for cycle durations of less than 60 minutes. From Fig. 5, it can be seen that the pressurization of the core resulted in a reduction in its permeability. SPERE. P. 91^
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Predictive pore‐scale modeling of two‐phase flow in mixed ...
2004-7-15 · The trend in oil recovery from a series of mixed wet Berea sandstone cores [Jadhunandan and Morrow, 1995] was well predicted by closely reproducing the experimental conditions such as S wi and saturation history. The focus of this work is not so much on obtaining a quantitative match with the experiments, but rather on understanding the pore ...
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Hysteretic nonlinear elasticity of Berea sandstone at low ...
2017-11-27 · of dry Berea sandstone as a function of the applied low-frequency (LF) axial strain (varied from 10 7 to 10 5). The approach, termed dynamic acousto-elasticity, is the dynamic analog of static acousto-elasticity where the wave speed is measured as a function of the applied static load. Dynamic acousto-elasticity uses low-frequency vibrational
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A comparative study of the stress-dependence of
2019-12-17 · sandstone, which might be attributed to the much larger porosity of Berea sandstone. from the very beginning to the peak pressure. When the . Figure 1: The volumetric strain (ε vol) as a function of the mean stress (σ mean) in a load-unload cycle for (a) Idaho Gray sandstone, (b) Berea sandstone, and (c) Tight sandstone.
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Capillary trapping quantification in sandstones using NMR ...
2017-8-23 · Four injection cycles were conducted for Berea sandstone and 3 for San Saba and Nugget Sandstones. 3.2 Analysis of T 2 —Pore Size Relationship As detailed above, a consideration when measuring T 2 is its susceptibility to increased relaxation due to diffusion through internal magnetic field gradients.
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基于数字岩心和孔隙网络模型的微观渗流模拟研究进展
2017-8-19 · Fig.8 The Berea sandstone relative permeability of experimental and predicted (Yan G L,2013) 4 结论 4.1 随着CT扫描等微观成像技术的发展,研究人员建立的孔隙网络模型越来越接近实际岩心的孔隙结构,对孔隙模型几何形状和物理性质的非均质性研究也越来越多 ...
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A new laboratory system for the measurement of low ...
2011-2-8 · dry Berea sandstone, fully water saturated Berea sandstone and Eclogite. The negative phase indicates that the signals from the standard arrive before those from the anelastic sample in the time domain. The solid epoxy cylinder is an end-member of highly attenuation material, which shows an absolute phase lag of 0.0800 rad.
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Mathematical modeling and simulation of water
2020-3-1 · The mathematical model simulates a WAG case study in a strongly water-wet Berea sandstone core, using synthetic oil and brine at 38 °C and 12.7 MPa. Three cycles of water flooding (WF) and gas injection (GI) are used in the WAG operation.
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Study on variations of peak strength of a sandstone during ...
2015-11-16 · An experimental investigation was carried out on Hawkesbury sandstone samples to study the peak strength variations during triaxial monotonic and cyclic compressive testing. Axial load, confining pressures and axial and lateral deformations were measured precisely from start of loading until post-peak state. Cyclic tests were carried out at different stress levels and
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Velocity and resistivity changes during freeze-thaw cycles ...
2020-4-1 · We report on simultaneous measurements of resistivity, compressional ( Vp ) , and shear ( Vs ) velocities made during the temperature cycling of Berea sandstone while at elevated pressure. Temperat...
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Hysteretic nonlinear elasticity of Berea sandstone at low ...
2017-11-27 · of dry Berea sandstone as a function of the applied low-frequency (LF) axial strain (varied from 10 7 to 10 5). The approach, termed dynamic acousto-elasticity, is the dynamic analog of static acousto-elasticity where the wave speed is measured as a function of the applied static load. Dynamic acousto-elasticity uses low-frequency vibrational
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Frontiers | Using Direct Numerical Simulation of Pore ...
In this section, two natural rock samples of Berea sandstone and Mt. Simon sandstone are selected to investigate residual trapping of CO 2 after a drainage-imbibition cycle. The former sample was the focus of an experimental study of measurement of contact angle between CO 2 and brine by Dalton et al. (2018) .
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Inelastic compaction, dilation and hysteresis of ...
2014-3-1 · Pressure–strain plots for different loading/unloading. (a) The slow (2 MPa min –1) and fast (4 MPa min –1) experiments of Berea sandstone and (b) the eighth (slow) and ninth (fast) cycles in the Darley Dale experiment.These cycles demonstrate the hysteresis in sandstone: loading is different than unloading cycles have the same paths.
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Novel Approach for Sandstone Acidizing Using in Situ ...
Core permeability increased immediately after the first treatment cycle and reached 41 mD. At the end, the core flooding results showed a permeability improvement for Gray Berea sandstone cores by almost 40%. The ICP analysis of the effluent showed a total amount of chelated Si + ions of about 10.5 mg. In addition to the high temperature ...
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A new laboratory system for the measurement of low ...
2011-2-8 · dry Berea sandstone, fully water saturated Berea sandstone and Eclogite. The negative phase indicates that the signals from the standard arrive before those from the anelastic sample in the time domain. The solid epoxy cylinder is an end-member of highly attenuation material, which shows an absolute phase lag of 0.0800 rad.
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Mathematical modeling and simulation of water
2020-3-1 · The mathematical model simulates a WAG case study in a strongly water-wet Berea sandstone core, using synthetic oil and brine at 38 °C and 12.7 MPa. Three cycles of water flooding (WF) and gas injection (GI) are used in the WAG operation.
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Laboratory observations of frequency-dependent
Uncertainty in P-wave attenuation with frequency for various hydrate saturations during hydrate formation at a differential pressure of 55 MPa in Berea sandstone. (a) Cycle 3 and (b) Cycle 4. Saturations of hydrate S h and methane gas S g are indicated in per cent. Table S1. Values used in the rock-physics model.
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Authigenesis in West Virginia Sandstones
second-cycle sandstones, such as the St. Peter sandstone (Wayland, 1939), may have been due partly to secondary growth in the parent sedimentary rock. The shapes resulting from authigenic growth would probably be largely main-tained even if the outgrowths were en-tirely worn off during transport. In three specimens of the Berea sand-
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Study on variations of peak strength of a sandstone during ...
2015-11-16 · An experimental investigation was carried out on Hawkesbury sandstone samples to study the peak strength variations during triaxial monotonic and cyclic compressive testing. Axial load, confining pressures and axial and lateral deformations were measured precisely from start of loading until post-peak state. Cyclic tests were carried out at different stress levels and
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