Using Corona to test NMR response of iron ore chip samples

Mark Downey; Kazek Trofimczyk

doi:10.1080/22020586.2019.12073202

2nd Australasian Exploration Geoscience Conference: Data to Discovery

ISSN: 2202-0586
E-ISSN:

oa Using Corona to test NMR response of iron ore chip samples
Authors Mark Downey^a and Kazek Trofimczyk^b
View Affiliations Hide Affiliations

^a Downey Data Analysis Pty Ltd c/o Kazek Trofimczyk BHP Iron Ore, [email protected] ^b BHP Iron Ore, 125 St George’s Tce, Perth, , WA, 6000, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2019, Issue 2nd Australasian Exploration Geoscience Conference: Data to Discovery, Dec 2019, p. 1 - 4
DOI: https://doi.org/10.1080/22020586.2019.12073202
- Published online: 01 Dec 2019

Abstract

Summary

The application of Nuclear Magnetic Resonance (NMR) to investigate the distribution of moisture in materials has not normally been applied to iron ores due to the magnetic properties of iron. However recent test work on blast hole chip samples of iron ore using the very low field Corona system has shown that it is possible to obtain useful information on moisture content. Key to obtaining useful results has been operating the Corona with “burst-mode”, replicating the style of data acquisition used in wireline NMR. The greatly increased signal-to-noise-ratio allowed for more robust inversions and more realistic representation of the moisture distribution in the samples being tested in a manageable time frame. This has allowed us to investigate the relationship between magnetic susceptibility and detected water content using the Corona.

Article metrics loading...

/content/journals/10.1080/22020586.2019.12073202

2019-12-01

2026-01-14

From This Site

/content/journals/10.1080/22020586.2019.12073202

dcterms_title,dcterms_subject,pub_keyword

-contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution

10

5

Full text loading...

References

Grombacher, D., Fay, E., Nordin, M., and Knight, R., 2016, The impact of pore-scale magnetic field inhomogeneity on the shape of the nuclear magnetic resonance time distribution, Geophysics, 81, (5), EN43-EN55. DOI:10.1190/geo20125-0466.1
Hopper, T., Summers, S., Birt, B., and Mandal, S., 2017, Borehole magnetic resonance in coal seams: Symposium on the Application of Geophysics to Engineering and Environmental Problems, 276 – 279.
Keating, K., Grunewald, E. D., and Walsh, D. O., 2015, A Laboratory Study to Determine the Effect of Field Strength and Magnetic Susceptibility on the NMR Estimated Water Content in Unconsolidated Sediments: American Geophysical Union, Fall Meeting 2015, abstract id. NS52A-05
Keating, K., and Knight, R., 2008, A laboratory study of the effect of magnetite on NMR relaxation rates: Journal of Applied Geophysics, 66, 188-196.
Kleinberg, R.L., 2001, NMR well logging at Schlumberger: Concepts in Magnetic Resonance 13, (6), 396 – 403. DOI:10.1002/cmr.1026.
Parashar, D., Fridjonsson, E.O., Carroll, M., Johns, M., and Hopper, T., 2015, NMR on iron rich core and cuttings – the importance of short TEs: ASEG 24th Geophysical Conference and Exhibition, February, Perth. Extended Abstracts.
Prammer, M., Bouton, R.N., Chandler, E.D., Drack, M.N, and Miller, M.N, 1998, A New Multiband Generation of NMR Logging Tools: Society of Petroleum Engineers Annual Technical Conference and Exhibition, New Orleans, U.S.A., paper SPE 49011.
Walsh, D., Turner, P., Grunewald, E., Zhnag, H., Butler, J.J.Jr., Reboulet, E., Knobbe, S., Christy, T., Lane, J.W.Jr., Johnson, C.D, Munday, T., and Fitzpatrick, A. 2013, A smalldiameter NMR logging tool for groundwater investigations: Ground Water, 51, 914-926. DOI:10.1111/gwat.12024.

/content/journals/10.1080/22020586.2019.12073202

Article Type: Research Article

Keyword(s): Corona; iron ore; magnetic susceptibility; Nuclear Magnetic Resonance; signal to noise ratio

Most Cited This Month Most Cited RSS feed

- Inversion of data from electrical imaging surveys in water-covered areas
  
  Authors M. H. Loke and J. W. Lane
- Inversion of Magnetic Data from Remanent and Induced Sources
  
  Authors Robert G. Elllis, Barrry de Wet and Ian N. Macleod
- A comparison of smooth and blocky inversion methods in 2-D electrical imaging surveys
  
  Authors M. H. Loke, Ian Acworth and Torleif Dahlin
- Designing matched bandpass and azimuthal filters for the separation of potential-field anomalies by source region and source type
  
  Authors Jeffrey D. Phillips
- Bad Colour Maps Hide Big Features and Create False Anomalies
  
  Authors Peter Kovesi
- Practical 3D EM inversion – the P223F software suite
  
  Authors Art Raiche, Fred Sugeng and Glenn Wilson
- Estimating Noise Levels in AEM Data
  
  Authors Andy Green and Richard Lane
- Target delineation using Full Tensor Gravity Gradiometry data
  
  Authors Colm A. Murphy and James Brewster
- Transdimensional Monte Carlo Inversion of AEM Data
  
  Authors Ross C Brodie and Malcolm Sambridge
- The geotech VTEM time domain helicopter em system
  
  Authors Ken Witherly, Richard Irvine and Edward Morrison
More Less

oa Using Corona to test NMR response of iron ore chip samples

Abstract

Most Read This Month

Most Cited This Month Most Cited RSS feed