... throat size, and displacing velocity), and the diffusion term (governed by bulk fluid diffusivity and matrix tortuosity). Previous studies suggest that within nanoscale porous media, diffusion can be the dominant drive mechanism. In this study, we investigate the impact of diffusion on gas injection...

... for mineral identification and characterization to fill the gap. This study covers a total of 4 classes (quartz, feldspar, calcite, and matrix) of 993 representative images in a clastic sedimentary rock, Mancos shale. The proposed architecture for automated classification is divided into the following stages...

... diffusivity through the cement matrix, a novel approach based on Nuclear Magnetic Resonance (NMR) is employed. Deuterium oxide (D 2 O) imbibition to replace H 2 O in cement plugs is monitored over time to derive tortuosity. Comparing pre- and post-CO 2 exposure D 2 O intrusion profiles allows us to determine...

... option for large-scale hydrogen storage. In the U.S., operational or depleted shale-gas reservoirs offer significant potential for hydrogen storage. However, retention of hydrogen in the tight, shale matrix and reactive formation damage may reduce well deliverability and cause significant hydrogen loss...

... structural geology drillstem testing rock type sandstone reservoir geomechanics depletion fracture scenario uinta basin unconventional resource technology conference matrix tuscher formation triple-porosity reservoir modeling case study williams fork formation facies colorado mesaverde group...

... algorithm forecasted daily production productivity matrix modeling & simulation complex reservoir drillstem/well testing proceedings feature space unconventional resource technology conference productivity driver pad-well basis analysis doi reservoir characterization production forecasting...

... penetration into the sample matrix in secondary and tertiary fractures branching from the main shear fracture. Fractures below the optical limit of the visual microscope were observable from the fluorescent tracer. A significant damage zone is observed in the sample matrix near the shear fracture surface...

... of heterogeneity of imbibition in shale samples. The dynamic processes of water imbibition in the 1-inch (25.4 mm) core sample were explicitly demonstrated, and the imbibition along the matrix and imbibition through microfractures is distinguished through neutron radiography image analysis. The causes of observed...

... (1993) and Giorgino (2009), which are excellent references on the subject. We further use a non-negative, local dissimilarity function defined between any pair of elements of and = 0 (1) As the only input to the DTW is the cross-distance matrix between sequences and , . ) can be suitably defined...

...URTeC: 3723022 Visualizing Fracture-Matrix Fluid Exchange in Unconventional Tight Mudstone John J Valenza*1, Johnathan Moore2,3, Sean Sanguinito2,3, Dustin Crandall2, 1. ExxonMobil Technology and Engineering Company, Research Division, Annandale NJ, USA, 2. U.S. Department of Energy, National...

... Abstract A 3D numerical model is presented to analyze the gas flow behavior in hydraulically fractured horizontal wells in anisotropic heterogeneous naturally fractured reservoirs with triple porosity (organic and inorganic matrix, and a fracture network). This model generalizes the models...

... efficiency. In recent years, a novel model called the embedded discrete fracture model (EDFM) is developed to efficiently model the flow between the matrix and complex fracture network (Lee et al 2001; Li et al. 2008; Hajibeygi et al. 2011; Xu et al. 2017). Moinfar et al. (2014) extended the EDFM method...

... Abstract Various compounds have been studied as aqueous wettability modifiers that alter the matrix wettability for enhanced oil recovery from shales. Their capability of altering the matrix wettability is important, but not sufficient for efficient oil recovery from the tight rock matrix...

... scale reactants are present in the injected fluids and precipitation occurs largely at fracture faces, with minor near-surface mineralization of matrix. Mineral scaling can also be "inside-out", where constituents for mineral scale such as Fe(II) are present in the shale matrix and precipitation...

... production monitoring flow in porous media hydraulic fracturing reservoir simulation upstream oil & gas fluid dynamics carbon dioxide srinivasan & viswanathan pore diffusion mehana matrix conventional reservoir viswanathan hydrocarbon reservoir fracturing fluid permeability...

... that diffusion can be a dominant transport mechanism in EOR in nanoporous media. Surface area and diffusion length govern diffusion efficiency. While surface area strongly depends on fracture density (natural and induced) and drawdown history; diffusion length is a function of fluid diffusion and matrix...

.... Abstract Production of hydrocarbons in unconventional resources is determined by matrix access provided by fractures through target production intervals. Fundamentally, these fractures provide a high permeability pathway for produced fluids from the matrix to be transported to the wellbore. This work...

... Abstract This paper presents a mechanistic simulation study of one-dimensional diffusion when the miscible injectant diffuses into a tight porous medium through the fracture/matrix interface with constant pore volume and temperature. The diffusion model based on the dusty gas model gives...

... techniques for structural mechanics were implemented based on the construction of the dynamic condensation matrix. Single-step reduction methods were first executed; in particular, Guyan DOFs based reduction techniques. Following that, two-step methods were implemented; where corrections were made...

... Abstract A large amount of fracturing fluid in fracking is imbibed into the shale fracture/matrix system, which leads to a significant uncertainty in gas recovery evaluation. The mechanism of imbibition impact on the gas–water two-phase flow is not well understood. In this study, systematic...