Pore-scale digital images are usually obtained from micro computed tomography (micro-CT) data that has been segmented into void and grain space. Image segmentation is a critical process for digital rock analyses that can influence pore-scale characterisation studies and/or the numerical simulation of petrophysical properties. This project is to study on the sandstone micro-CT image segmentation by using convolutional neural network.
Porous carbonado diamonds were imaged in 3D using X-ray computed tomography before and after every step in a sequential acid digestion procedure. The resulting scans were registered to one another and masked to eliminate all exterior voxels (e.g. air, bag, and container). These images were then used to understand the effects of different acids on the pore-filling minerals. We were also able to assess how the nature of pore-filling material can affect measurements of porosity.
Dataset: Sandstones (Bentheimer, Doddington, and Rotleigend) X-Ray Microscopy (XRM) is used to examine the intergranular pore structures in a series of sandstones. All three sandstone samples are imaged using a ZEISS Versa X-ray Microscope (XRM) (ZEISS X-Ray Microscopy, Pleasanton, CA). 3D volumes of the varying resolution are reconstructed from a series of 1600 projections, sequentially acquired at evenly spaced angular increments during a 360° rotation. Each projection consists of 1024 x 1024 pixels and is...
Digital Rocks Super Resolution Dataset 1: Sandstone and Carbonate micro-CT Images used for 2D and 3D Super Resolution Machine Learning Training, Validation, and Testing. This dataset comprises of organised 2D slices and 3D volumes of Bentheimer Sandstone [sourced internally from UNSW] and Estaillades Carbonate [https://www.digitalrocksportal.org/projects/58/origin_data/209/], imaged at a resolution of 3.8 and 3.1 microns respectively. The dataset is organised in a similar fashion to the DIV2K dataset : (https://data.vision.ee.ethz.ch/cvl/DIV2K/). To the knowledge of the authors,...
Dataset: Bentheimer networks Bentheimer is imaged by a ZEISS Versa X-ray Microscope (XRM) (ZEISS X-Ray Microscopy, Pleasanton, CA). A series of 1600 2D projections are acquired at regular angular increments over a 360° rotation. These reconstruct a series of 3D volumes: cylinders which are then cropped to the maximally inscribed cubes. 2D projections are 1024 x 1024 pixels, and 3D volumes are 1024 x 1024 x1024 voxels. Images are segmented by ZEISS Zen Intellesis machine...
High-resolution X-ray CT scans and processing of fracture in granite for modeling 3D fracture flow. Primary fracture mapped using IPSF method.
MicroCT images of residual CO2 trapping in oil wet sandstone.
Imaged data for the paper 'Stress Sensitivity of Fractured and Vuggy Carbonate' in volumetric tif format.
Synthetic fractures were created to quantify the effect of heterogeneity in surface roughness and mineralogy (which affects wettability) for multiphase flow. This project includes: 1) Rough fractures 2) Slits exhibiting different mineral shape (circles and bands) 3) A heterogeneously wet fracture The matlab codes to create the geometries can be found at: https://github.com/je-santos/syntheticFractures
The aim of this experimental study is to investigate the impact of wetting characteristics on multiphase flow, sweep efficiency, and residual fluid distribution in unconsolidated porous media. A sequence of oil and water injections was performed on bead packs with uniform porosity and permeability, but different wettability characteristics. Uniform and mixed wet bead packs with varying degree of wettability were fabricated to analyze how the residual saturation profiles and the distribution of fluid phases at...
The dataset contains the height map of the surface of Ketton rock obtained with atomic force microscopy, the corresponding 3D reconstruction and the results of a drainage simulation.
These files are Berea and Mt. Simon sandstone micro-CT data sets at residual conditions from the paper Methods to Measure Contact Angles in scCO2-Brine-Sandstone Systems. They are 16-bit image stacks cropped from one larger sandstone micro-CT scans and are being provided for additional researchers to use manual and automated contact angle measurement methods to measure contact angles for a comparison to the paper results.
X-ray CT scans of apatite crystals, for the purpose of supporting (U-Th)/He thermochronometry by measuring size, shape, and corrections for alpha particle ejection during radioactive decay.
Bidisperse sphere packs were generated under the effect of gravity to model mudrocks and study the petrophysical properties consisting of small (clay) and large (silt) grains. Multiple, periodic, dense, bidisperse sphere packs were created with large grain volume concentrations (VL) increasing from 0 to 100 %. This was done for large to small grain radius ratios of 2:1, 5:1, 7:1, and 10:1 with constant sphere pack length 10 units in x, y, z directions. The...
Dataset of 3D fluid phase distribution from drainage simulations (in micromodel and real rock geometry) examining inertial effectsYu Chen, Qinjun Kang, Albert Valocchi & Hari Viswanathan
The dataset contains fluid phase distribution obtained from high-resolution drainage simulations in both a heterogenous micromodel and Bentheimer sandstone. The purpose is to investigate the influence of inertial effects on scCO2-brine displacement in complex geometries, where scCO2 is much less viscous than brine or oil meaning that the inertial effects may not be negligible. The direct numerical simulations in this work employ the continuum-surface-force based color-gradient multiple-relaxation-time lattice Boltzmann model combined with a geometrical wetting...
A Diverse Super Resolution Dataset of Digital Rocks (DeepRockSR): Sandstone, Carbonate, and Coal. This dataset contains an organised and processed collection of greyscale digital rock images for the purpose of image super resolution training. In total, there are 12,000 2D images and 3,000 3D volumes contained in this dataset. Sandstone: Bentheimer Sandstone 1 https://www.digitalrocksportal.org/projects/211 Bentheimer Sandstone 2 https://www.digitalrocksportal.org/projects/135 Berea Sandstone https://www.digitalrocksportal.org/projects/135 Leopard Sandstone https://www.digitalrocksportal.org/projects/135 Gildehauser Sandstone https://www.digitalrocksportal.org/projects/134 Wilcox Tight Sandstone https://www.digitalrocksportal.org/projects/6 Carbonate: Estaillades Carbonate https://www.digitalrocksportal.org/projects/58...
FIB-SEM data (voxel size 2.5nm x 2.5nm x 5nm) of the Vaca Muerta formation, Argentina.
Vuggy porous media with five different vug configurations are fabricated: no vug, single vug, two vugs in series, two vugs in parallel, and random distribution of vugs. Suspended glass beads (50 micron diameter and 1% vol/vol) are injected in the vuggy core and temporal CT scans are conducted.
Offshore miocene sandstone (Folk McBride Collection) Example thin section from an offshore Texas miocene sandstone. Quart-rich medium sand. Well number SMI 236 A4. To view the scanned thin-sections use VPViewer developed by Innova Plex, Inc. Please contact email@example.com to obtain a license. The resolution for all samples and all magnifications is 1 micrometer per pixel. The file naming follows the template OffshoreMiocene_20.jpx_0.05x_1817_3486_ppl.jpg with: OffshoreMiocene_20 = Base name of the file 0.05x = magnification 1817, 3486...
This project presents particle straining in two unique configurations of vuggy proxy media: series and parallel vugs. The porous medium is generated by sintering glass bead (1.0 mm) with salt inclusions and then dissolving the inclusion with water flooding. Smaller sized glass bead particles (25 and 100 um) are injected in the proxy media to establish straining. Medical CT images of before and after injection are presented for two different flow rates (40 and 60...
A time-resolved synchrotron X-ray micro-tomography dataset of a waterflood in an altered mixed-wet Ketton limestoneWillem-Bart Bartels Maja Ruecker, Willem-Bart Bartels, Steffen Berg, Frieder Enzmann, Arne Jacob, Hassan Mahani, Niels Brussee, Christian Hinz, Apostolos Georgiadis & Christian Wagner
The dataset contains time-resolved synchrotron X-ray micro-tomographic images (grey-scale and segmented) of a waterflood experiment in a mixed-wet Ketton limestone sample. The tomographic images were acquired at a voxel-resolution of 3 micrometer and scanning time of 7 s. The data were collected at the TOMCAT beamline of the Swiss Light Source of the Paul Scherrer Institute (PSI SLS), with the aim to investigate pore scale processes in crude oil - brine - rock systems. Understanding...
Stalagmite ML-1 was scanned using neutron and x-ray computed tomography to assess the internal structure and liquid inclusion distribution. The x-ray computed tomography data illustrate the internal calcite density and crystal structure. The neutron computed tomography data show the distribution of light atoms, like hydrogen, in the stalagmite lattice.
This dataset was used in the study of Van Offenwert et al. (2019). It contains time-resolved laboratory-based micro-CT images of saturated solute injection experiments in sintered glass and Bentheimer sandstone. Based on the grey values in the resolved pore space, pore-scale concentration fields can be quantified. To estimate its uncertainty, calibration scans where the pores were saturated with a known tracer (CsCl) concentration were performed at 12 s per scan with a voxel size of...
2D bead-packs (0.6 m x 0.6 m x 0.02 m) were generated with realistic geological features (cross-stratification and ripple lamination). To demonstrate an application of the technique, gravity unstable multiphase flow experiments were conducted in the generated bead-packs. This project contains time-lapse videos of these flow experiments.
Mancos shale samples scanned pre and post-triaxial testing. Triaxial testing at various stress loading paths and confining pressures ranging from 100 to 500 psi. Three types of samples (Perpendicular Bedding- PD_ , Directional Bedding- 45_ , Parallel Bedding- PL_) Videos of fracture network visualization using Fiji/Image-J post-triaxial testing can be found here: https://www.youtube.com/playlist?list=PLv0npDbE5HXvEdptgajRDG3x-lwmtGDbr X-ray power ranging from 16.9 to 30.3 W. Copper filters used with thicknesses varying from 0 to 0.25 mm. Exact voltage and...
The University of Texas at Austin3
Carl Zeiss Foundation2
Imperial College London2
Southern Methodist University2
Los Alamos National Laboratory1
University of Illinois at Urbana Champaign1
China University of Petroleum1
Edith Cowan University1