sandstone permeability

sandstone permeability

Effect Of Hot Water Injection On Sandstone Permeability

2012-6-4 · A number of studies have been conducted on sandstone reservoir rock cores to investigate the permeability and the optimal flow scenarios [18, [35][36][37]. However, most of these flow experiments ......

Mechanical behavior and permeability evolution of

2021-7-17 · Abstract. Permeability is a fundamental index that is closely related to rock damage in geotechnical engineering. In this study, dynamic triaxial compression tests were performed …...

The Effect of Bacteria on Sandstone Permeability

Three different permeability ranges of Berea sandstone cores were used in the study. The range of initial, absolute brine permeabilities ki were: high - 278 to 400 md; medium-130 to 162 md; and low-17.7 to 48.3 md. The permeability data for the cores used in the tests are included in Table 1. All cores were cut to a nominal 1 in. diameter....

Effect of flow rate and salinity on sandstone permeability

2006-11-10 · The Bentheim sandstone permeability decreases with the increase of the flow rate and decrease of the sodium chloride concentration. The SEM imagery confirms that the permeability decreases due to release of the discretely dispersed clays from the pore walls and their further re-deposition in the narrower pore throats....

Relative permeability and trapping of CO2 and water in …

2012-2-28 · [1] We report the results of an experimental investigation into the multiphase flow properties of CO 2 and water in four distinct sandstone rocks: a Berea sandstone and three reservoir rocks from formations into which CO 2 injection is either currently taking place or is planned. Drainage relative permeability and residual gas saturations were measured at 50°C …...

Experimental Study on the Permeability of Quartz …

2021-8-19 · The permeability of sandstone, which depends on stress state, temperature, and fluid pressures, is a key issue in various petroleum engineering applications, such as, natural gas exploration, petroleum exploitation, and oil exploration [1–3].During the operation stage of underground reservoir, the permeability of sandstone is affected by the coupled thermal, …...

Mineralogy of sandstones: Porosity and

2019-8-4 · However, the secondary porosity seen in most ancient sandstones is the product of burial diagenesis. Permeability measures the ease with which a …...

Study on permeability characteristics of sandstone

The larger the pores are, the higher the compression sensitivity is. The proposed permeability formula considering the pore compression sensitivity at different scales are in good agreement with the experimental results. Key words: hydro-mechanical coupling, pore size distribution, compression sensitivity, sandstone, permeability evolution...

Temperature Dependence of the Permeability of …

2020-4-14 · Rock permeability is a key parameter in evaluating the CO2 storage capacity and injectivity in geologic CO2 sequestration projects. To investigate the influences of confining pressure and testing temperature on rock permeability, seepage tests were carried out on four cylindrical sandstone specimens using a newly developed triaxial permeability measurement …...

Anomalously High Porosity and Permeability in Deeply …

2002-2-1 · Porosity and permeability generally decrease with increasing depth (thermal exposure and effective pressure); however, a significant number of deep (>4 km [approximately 13,000 ft]) sandstone reservoirs worldwide are characterized by anomalously high porosity and permeability....

Predicting the Permeability of Tight Sandstone Utilizing …

2020-8-24 · The proposed model was validated by 21 tight sandstone samples, with the relative errors within ±20%. In addition, due to the presence of small pores in tight sandstone with little contribution to overall permeability, the permeability shows inversely proportional behavior against the number of small pores....

Permeability evolution during triaxial compaction of an …

2021-2-22 · sandstone). We show that CBs develop in both orientations but that their geometric attributes are very different. In turn, these geometrical differences influence fluid flow in signif-icantly different ways in the two orientations. Finally, we compare our new data to previously published permeability data on deformed sandstone and with recently ......

Experimental study of the permeability of fractured

2020-5-14 · Therefore, the final permeability of the fractured sandstone was governed by fracture permeability and matrix permeability, which were larger than the intact sandstone permeability. S1 had the smallest permeability among the three samples, and the magnitude of the permeability was 10 −18 m 2. S3 had the largest permeability because it is a ......

Producible Porosity And Permeability Of Sandstone

The laboratory measurements of porosity (+), permeability (K), residual (irreducible) water saturation (Swr), free fluid index (FFI), and spin-lattice relaxation time (T1) were conducted on …...

Experimental Study on Deformation Behavior and …

2022-9-25 · Mining-induced hydromechanical behavior of sandstone is critical to mining safety and disaster prevention. To investigate the evolution behavior of the mechanical and permeability properties of sandstone, mining-induced stress was imitated by increasing axial stress and decreasing confining stress, and a set of hydromechanical experiments were further …...

Sandstone

2019-3-22 · Permeability. Related property of sandstone with porosity is permeability. Permeability is effective amount of pore spaces. Selley defines permeability as the ability of a liquid or gas to flow through a porous solid. Darcy''s law defines the calculation of permeability Q: Rate of flow (cc sec-1) K: Permeability Δ: Pressure gradient...

Permeability prediction for porous sandstone using digital …

2021-6-1 · Permeability of these fluids in rock is highly valued in many fields, such as water inrush in tunnels and coal mines, 1, 2 water resources and hydropower engineering, 3 geothermal …...

Gas relative permeability and pore structure of sandstones

1999-7-1 · Gas relative permeability when considered as a solely function of the liquid saturation, considerably simplifies the gas flow modelling and estimation. • The Brooks and Corey …...

Colloid Migration as a Reason for Porous Sandstone

2022-4-13 · During coreflooding under stationary conditions, permeability is determined by the Darcy formula; thus, the apparent permeability is determined, which characterizes the average hydraulic conductivity of the core, but does not take into account the processes occurring at the microlevel. Transient processes during fluid injection regime change are important for …...

Modeling investigation of coupling between damage and …

2021-10-1 · Then, a novel sandstone permeability model was developed by introducing the damage evolution function. The proposed coupled damage and permeability model covered the matrix and fracture permeabilities. A series of triaxial seepage experimental data of sandstone under different pore water pressures was cited to validate the coupled model....

Creep and permeability evolution behavior of red …

2020-2-5 · Xu, P. & Yang, S. Q. Permeability evolution of sandstone under short-term and long-term triaxial compression. International Journal of Rock Mechanics & Mining Sciences 85, 152–164 (2016)....

Gas Permeability and Porosity Evolution of a Porous …

2017-4-12 · The permeability and porosity of a porous sandstone under cyclic loading–unloading conditions are measured using an integrated permeability and porosity measurement system. Mineral content analysis of the rock is performed. The rock contains open microcracks and pores, which can be closed after cyclic loading–unloading; as a result, the permeability and porosity …...

(PDF) Particle Flow Simulation of Failure Process of …

2022-10-7 · PDF | In order to explore the mechanical response characteristics of fractured sandstone under true triaxial different medium principal stresses, matdem... | Find, read and cite all the research ......

Permeability Variations in Illite‐Bearing Sandstone: Effects …

2020-9-7 · The fact that permeability remained high upon first saturation with deionized water implies that the clay fraction in this sandstone, initially, is strongly attached to the pore walls. Therefore, any permeability decrease observed later upon dilution of a saline NaCl pore fluid requires some kind of weakening mechanism by the subsequent fluid ......

Evolution and controls of high reservoir quality in …

2022-10-14 · The Oligocene sandstones characterized by highly variable reservoir quality are the main hydrocarbon exploration and development targets in the Nanpu …...

Effects of temperature and pressure on water permeability

Article "Effects of temperature and pressure on water permeability of andesite and sandstone." Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas....

Permeability Predictions for Tight Sandstone Reservoir …

2022-1-6 · High-precision permeability prediction is of great significance to tight sandstone reservoirs. However, while considerable progress has recently been made in the machine learning based prediction of reservoir permeability, the generalization of this approach is limited by weak interpretability. Hence, an interpretable XGBoost model is proposed herein based on particle …...

Difference Analysis on Sandstone Permeability After …

2021-5-10 · The results show that the initial permeability of rock treated at different temperatures clearly varies. The critical temperature of sandstone is 400 °C. After exceeding this temperature, the permeability of the rock samples generally decreases with the increase in the number of cycles but increases rapidly in the failure stage....

Seepage Characteristics of a Low Permeability Sandstone

2021-9-16 · Characteristics of the relative permeability curve of medium sandstone in the main lithology of the J 1 s 2 2 reservoir (Figure 5): with the increase in water saturation, relative permeability of the oil and water phases decreases rapidly and increases slightly, respectively, and the water cut increases rapidly.The production performance of J 1 s 2 2 is as follows …...

Relative permeability and trapping of CO2 and water in …

2012-2-28 · [13] A low permeability sandstone from the Mt. Simon sandstone formation was obtained from a well in Macon County, Illinois. The Mt. Simon underlies one of the largest concentrations of coal-fired power stations in the world and is the target formation of several actively developing CO 2 storage projects [Leetaru et al., 2009]. The core was ......

(PDF) Prediction of Permeability In Quartz-Rich

2012-12-1 · estimates of sandstone permeability for several sets of sandstone samples with porosities and permeabilities in the approximate ranges 3–28% and 0.02–5 000 md respectively (Burdine et al. 1950 ......

Correlation between sandstone permeability and capillary

2004-8-1 · Swanson determined the values of the parameter ( Snw / Pc) A for 319 sandstone and carbonate samples representing 74 formations using the 45° tangent line to the capillary …...

Permeability Variations in Illite‐Bearing Sandstone: …

2020-9-21 · The permeability of Berea sandstone to oil increased ©2020. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. RESEARCH ARTICLE 10.1029/2020JB020122 Key Points:...

Experimental study of the permeability of fractured …

2020-9-1 · synchronously, the permeability decreases, and the decrease rate tends to be stable. These results can provide an important basis for prediction of the permeability evolu-tion of fractured sandstone and for efficient oil and gas exploitation. KEYWORDS complex stress paths, fractured sandstone, liquid flow, permeability evolution...

A review: controls on sandstone permeability during burial …

2019-12-20 · Permeability is important parameter in petroleum explorations because it controls the production rate of hydrocarbons. Economic estimation of petroleum accumulations requires the best knowledge of the distribution of the permeability at subsurface. Acquiring the much realistic permeability has been a controversial and disputed subject. Petroleum companies …...