22 Works

Estaillades Carbonate #2

Tom Bultreys, Luc Van Hoorebeke & Veerle Cnudde
Estaillades carbonate is a mono-mineralic, calcitic rock, which contains two types of pores: intergranular macropores and intra-granular micropores. An Estaillades sample with a diameter of 7mm was scanned with UGCT’s HECTOR micro-CT scanner (developed in collaboration with XRE, www.xre.be). In this micro-CT scan, (most of) the intergranular macropores are resolved, while the micropores are not. A three-phase segmentation consisting of pore voxels, voxels with unresolved porosity, and solid voxels is provided. This image was used...

Particulate straining in carbonate proxy

Hasan Khan, Masa Prodanovic & David A. DiCarlo
This project presents particle straining in vuggy proxy media, where the media is a sintered glass bead (1.0 mm) core with dissolvable inclusion. 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 2 different flow rates (40 and 60 ml/min) and 3 different flow concentration (0.5%, 1% and 2%). The experiments are labeled according to...

Gold grains scanned at various resolutions

Richard Ketcham
This project was to develop and test a method to measure the size and shape of particles that are small relative to the scan resolution, in a way that is accurate, reproducible, objective, and resolution-invariant. The scans are of an artificial core containing 12 gold grains embedded in quartz powder and epoxy (some iron filings are also mixed in), with sizes ranging from 100-300 microns (sphere-equivalent diameter), and a range of shapes. There are 12...

Guelph Dolomite characterization

Andres Gonzalez Hasan Khan
This project is part of a Guelph dolomite (GD) petrophysical characterization study. Multi-scale CT scans are conducted on a GD core (30 mm x 75 mm) at a resolution of 23 um. Medical CT (low resolution - 250 microns), permeability and NMR study are also done on the sample. Digital sub-sample is created and vug have been segmented. Vug characterization is attempted by using the surface to volume ratio to determine the vug shape and...

Bentheimer Micro_CT with Waterflood

Thomas Ramstad & Anders Kristoffersen
Micro CT images of waerflooding in a Bentheimer outcrop. 120 kV with 7 microns resolution. Dry scan of the core before flooding Scan after water flooding (at Sor state)

Guelph dolomite

Gary Pope Hasan Khan
Medical CT scans of Guelph dolomite for fracture characterization. The core was imaged in Department of Petroleum and Geosystems Engineering, UT Austin.

Triaxial Direct-Shear In Situ Microtomography

Luke Frash, J.William Carey & Tim Ickes
We perform x-ray radiography and microtomography on rock specimens that are fractured at elevated confining stress conditions up to 30 MPa. We also concurrently measure stress and hydraulic conductivity. Metadata for this study is described in companion publications. LA-UR-18-27419. To read these *.npy files using python 2.7: " import numpy as np import pylab stack = np.load('BA01-05_3D_CT_python_array.npy') view = pylab.imshow(stack[300,:,:], cmap='gray') pylab.show() "

Water-wet three-phase flow micro-CT tomograms

Alessio Scanziani, Kamaljit Singh & Martin Blunt
This dataset contains 3D images of a Ketton water-wet rock saturated with two or three phases (KI-doped brine, iododecane-doped decane and nitrogen). The images were obtained at two different resolutions (5 and 2 micrometres per voxel side) using a laboratory based X-ray micro-CT scanner. We provide raw data after each of the following injection steps: - dry image - oil injection in a fully brine saturated sample (OI) - first waterflooding (WF1) - gas injection...

Fines migration in sediments containing methane hydrate during depressurization

Han Gyeol & Tae-Hyuk Kwon
This project presents the X-ray CT image sets obtained during depressurization of methane hydrate bearing sediments. Particularly, the imaging experiment aims on quantifying the extent of fines migration in sediments containing some fines due to depressurization. In this study, three sediments were tested as follows: (a) Ottawa 20-30 sand with 9%w/w silica silt (b) F110 sand with 11.5%w/w silica silt (c) F110 sand with 6%w/w kaolinite and 4%w/w silica silt. These three are referred to...

Pore habit of clathrate hydrate

Xiongyu Chen
This project includes high resolution images of three hydrate growth experiments. Data are from an accepted paper by Xiongyu Chen and D. Nicolas Espinoza published in Fuel in 2018, titled "Ostwald Ripening Changes the Pore Habit and Spatial Variability of Clathrate Hydrate" Exp1: Xenon hydrate growth inside an aluminum vessel half filled with pure water and half filled with xenon gas. T= 23 C, P_initial = 2.84 MPa. The image stack is taken with X-ray...

Multiphase Flows in Sandstones

Anna Herring, Adrian Sheppard, Michael Turner & Levi Beeching
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 image processing was accomplished via Mango.

X-ray micro-tomography datasets of mixed-wet carbonate reservoir rocks for in situ effective contact angle measurements

Amer Alhammadi, Branko Bijeljic & Martin Blunt
Three high resolution X-ray micro-tomography datasets of carbonate reservoir rock samples obtained after 20 pore volumes of waterflooding at subsurface conditions. The three samples (Sample 1, Sample 2 and Sample 3) have been aged to restore the reservoir wetting conditions (mixed-wettability). The mixed wetting conditions have been characterized by in situ effective contact angle measurements using the automated algorithm developed by AlRatrout et al., 2017 applied on the segmented images. More details can be found...

Foamed Cement API RP 10B-4

Dustin Crandall, Samantha Fuchs, Magdalena Gill, Johnathan Moore & Barbara Kutchko
Computed Tomography images of foamed cement created using the American Petroleum Institute's Recommended Practice 10B-4. Two different sets of additives were used to make 10%, 20%, 30%, and 40% atmospheric foam cement.

Keathley Canyon 151 Sediment Cores

Dustin Crandall, Ann Cook, Emma Oti & Edwin Buchwalter
Medical CT scans of 38 cores from Site Keathley Canyon 151 in the northern Gulf of Mexico drilled by the Gas Hydrate Joint Industry Project led by Chevron in 2005. Please see Winters et al 2008 (https://doi.org/10.1016/j.marpetgeo.2008.01.018) for description of physical properties of sediments and drilling location. Samples were scanned at the National Energy Technology Laboratory in 2011 after hydrates had dissociated. The scans were collected using a Universal Systems 350 HD medical CT scanner...

Downscaling-based segmentation for unresolved images of highly heterogeneous granular porous samples

Ilenia Battiato Svyatoslav Korneev
We propose a simple and efficient algorithm of downscaling followed by segmentation to reconstruct the unresolved pore space from X-ray computed tomography (XCT) images of natural geological porous media columns. Contrary to widely employed single and multilevel threshold-based segmentation, the proposed method is based on a continuous map between pixel intensity and local pixel porosity that does not rely on the definition of arbitrary thresholds. The approach is used to generate a high-resolution binary image...

High resolution X-ray micro-tomography datasets for in-situ effective contact angle analysis in carbonate rocks

Kamaljit Singh & Martin J. Blunt
The datasets contain high resolution X-ray micro-tomographic images (raw, filtered and segmented) obtained after a drainage-imbibition cycle in a water-wet Ketton carbonate rock sample. Two subsets (SSa and SSb) were extracted from the tomographic images on which we have performed automatic effective contact angle measurements. Further details for image analysis can be obtained from: 1. Singh, K., Bijeljic, B. and Blunt, M.J. (2016). Imaging of oil layers, curvature and contact angle in a mixed-wet and...

Characterization of Berezov Formation Rock Samples by Digital Core Analysis

Andrey Kazak & Svyatoslav Chugunov
The project summarizes activity for quantitative pore-scale characterization of a tight gas reservoir using digital rock physics (DRP) approach in the result of tight collaboration with NOCs and IOCs.

X-ray CMT Images of Abiotic Carbonate Precipitation in Porous Media from a Supersaturated Solution

Seung-Hun Baek & Tae-Hyuk Kwon
This file contains X-ray computed microtomography (CMT) images used to analyze abiotic carbonate precipitation in porous media from a supersaturated solution. An X-ray transparent and rigid-walled polycarbonate column was developed to hold the sand pack tight during the carbonate precipitation process. The column consisted of a polycarbonate tube with an inner diameter of 3.18 mm, an outer diameter of 9.53 mm, and a height of 44.1 mm. Two polycarbonate discs and two stainless steel springs...

Digital Rendering of Sedimentary Relief Peels

Tip Meckel
Sedimentary-relief peels from field environments have been a primary observational technique for decades. Hundreds (likely thousands) of specimens of variable quality exist, representing a wide range of acquisition techniques, and depositional processes and sedimentary environments (e.g., Martinius and van den Berg, 2011). Peels are traditionally used to recognize and explain depositional processes and sedimentary textures qualitatively. This project is an effort to digitally capture sedimentary heterogeneity information represented by these unique specimens that are larger...

Hydrate-Bearing Sand

Xiongyu Chen
This project includes high resolution micro-CT images of one xenon hydrate growth experiment in sand. Data are from a paper by Xiongyu Chen, Rahul Verma, D. Nicolas Espinoza and Masa Prodanovic, published in Water Resources Research in 2018, titled "Pore-Scale Determination of Gas Relative Permeability in Hydrate-Bearing Sediments Using X-Ray Computed Micro-Tomography and Lattice Boltzmann Method" Conditions for xenon hydrate growth in sand: T=23C, P_initial =3.72 MPa. Aqueous phase is 10wt% NaBr brine. The image...

Pore-scale imaging of multiphase flow at steady state for a Bentheimer sandstone

Qingyang Lin, Branko Bijeljic, Ronny Pni, Martin Blunt & Samuel Krevor
Images of imbibiiton process for a Bentheimer sandstone at different fraction flows

Gildehauser Sandstone

Steffen Berg, Ryan Armstrong & Andreas Weigmann
Micro-CT scans of a fast synchrotron-based micro-CT flow experiment performed in Gildehauser sandstone rock. The data set consists of - dry scan (at higher quality settings that the flow experiment itself) - dry scan segmented - time sequence of imbibition experiment (40 s time intervals), segmented into rock, oil and water phase

Registration Year

  • 2018
    22

Resource Types

  • Dataset
    19
  • Image
    3