• BGS metadata catalogue
  •  
  •  
  •  

X-ray Microtomography of Intermittency in Multiphase Flow at Steady State Using a Differential Imaging Method

The images in this dataset are a sample of Bentheimer Sandstone from a micro-computed tomography (micro-CT) scan acquired with a voxel resolution of 6.00µm. We imaged the steady state flow of brine and decane in Bentheimer sandstone. We devised an experimental method based on differential imaging to examine how flow rate impacts the pore-scale distribution of fluids during coinjection. This allows us to elucidate flow regimes (connected, or breakup of the nonwetting phase pathways) for a range of fractional flows at two capillary numbers, Ca, namely 3.0E-7 and 7.5E-6. At the lower Ca, for a fixed fractional flow, the two phases appear to flow in connected unchanging subnetworks of the pore space, consistent with conventional theory. At the higher Ca, we observed that a significant fraction of the pore space contained sometimes oil and sometimes brine during the 1 h scan: this intermittent occupancy, which was interpreted as regions of the pore space that contained both fluid phases for some time, is necessary to explain the flow and dynamic connectivity of the oil phase; pathways of always oil-filled portions of the void space did not span the core. This phase was segmented from the differential image between the 30 wt % KI brine image and the scans taken at each fractional flow. Using the grey scale histogram distribution of the raw images, the oil proportion in the intermittent phase was calculated. The pressure drops at each fractional flow at low and high flow rates were measured by high precision differential pressure sensors. The relative permeabilities and fractional flow obtained by our experiment at the mm-scale compare well with data from the literature on cm-scale samples.
 
Citation proposal
qccsrc@imperial.ac.uk (Qatar Carbonates and Carbon Storage Research Centre). X-ray Microtomography of Intermittency in Multiphase Flow at Steady State Using a Differential Imaging Method. https://metadata.bgs.ac.uk/geonetwork/srv/api/records/76385908-22bc-74ee-e054-002128a47908

Simple

Date ( Creation )
2018
Identifier
http://data.bgs.ac.uk/id/dataHolding/13607382

  Author

Qatar Carbonates and Carbon Storage Research Centre - qccsrc@imperial.ac.uk  
United Kingdom

  Point of contact

Qatar Carbonates and Carbon Storage Research Centre - qccsrc@imperial.ac.uk  
United Kingdom

  Principal investigator

Imperial College London - Martin Blunt  
London United Kingdom

  Point of contact

Imperial College London - Ying Gao  
London United Kingdom

Maintenance and update frequency
notApplicable notApplicable
GEMET - INSPIRE themes
  • Geology
BGS Thesaurus of Geosciences
  • Porosity , Carbon capture and storage
Keywords
  • NERC_DDC
Access constraints
otherRestrictions Other restrictions
Use constraints
otherRestrictions Other restrictions
Other constraints
The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.
Other constraints
Either: (i) the dataset is made freely available, e.g. via the Internet, for a restricted category of use (e.g. educational use only); or (ii) the dataset has not been formally approved by BGS for access and use by external clients under licence, but its use may be permitted under alternative formal arrangements; or (iii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted in order to determine the permitted usage of the dataset. Refer to the BGS staff member responsible for the creation of the dataset if further advice is required. He / she should be familiar with the composition of the dataset, particularly with regard to 3rd party IPR contained in it, and any resultant use restrictions. This staff member should revert to the IPR Section (ipr@bgs.ac.uk ) for advice, should the position not be clear.
Metadata language
English English
Topic category
  • Geoscientific information
Supplemental Information
Gao et al (2017) X-ray micro-tomography of intermittency in multiphase flow at steady state using a differential imaging method. Water Resources Research. DOI:10.1002/2017WR021736

Reference System Information

No information provided.
Distribution format
  • .TXM ()

OnLine resource
http://www.bgs.ac.uk/ukccs/accessions/index.html#item118450  
OnLine resource
http://dx.doi.org/10.5285/db27d484-55b9-4897-9f0a-3d7de343d2c6  
Hierarchy level
nonGeographicDataset Non geographic dataset
Other
non geographic dataset

Conformance result

Date ( Publication )
2011
Explanation
See the referenced specification
Pass
false

Conformance result

Date ( Publication )
2010-12-08
Explanation
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
Pass
false
Statement
Rock Samples were obtained from the Bad Benthenium, Germany. These were scanned using a Zeiss Xradia VersaXRM-500 Micro-CT scanner at an actual voxel (pixel) size of 6.00um. The output images are in a proprietary TXRM dataset format and include the metadata relating to the image acquisition scanner settings e.g. voxel size. The details of the sample preparation and fluid injection strategy can be found in Gao et al. (2017). The Fluid configurations during steady state brine/decane fractional flow coinjection for a range of fractional flows at two capillary numbers, Ca, namely 3.0E-7 and 7.5E-6. The image size was 1004x1024x1016 voxels. After reconstruction, all the images were resampled using the Lanczos algorithm (Burger & Burge, 2016). The TXRM files were then processed using Zeiss’s XMReconstructor software to give a stack of image slices in another proprietary TXM format.

gmd:MD_Metadata

File identifier
76385908-22bc-74ee-e054-002128a47908   XML
Metadata language
English English
Hierarchy level
nonGeographicDataset Non geographic dataset
Hierarchy level name
non geographic dataset
Date stamp
2021-01-15
Metadata standard name
UK GEMINI
Metadata standard version
2.3

  Point of contact

British Geological Survey  
The Lyell Centre, Research Avenue South EDINBURGH LOTHIAN EH14 4AP United Kingdom

  +44 131 667 1000  
Dataset URI
http://data.bgs.ac.uk/id/dataHolding/13607382
 
 

  Overviews


Provided by

Access to the portal
Read here the full details and access to the data.

Associated resources

Not available


  •  
  •  
  •