Evaluation of tar deposits using neutron tomography, Canning Basin, Western Australia

Mike F. Middleton; Frikkie de Beer; Peter Haines; Arthur Mory

doi:10.1071/ASEG2007ab093

ISSN: 2202-0586
E-ISSN:

oa Evaluation of tar deposits using neutron tomography, Canning Basin, Western Australia
Authors Mike F. Middleton^a, Frikkie de Beer^b, Peter Haines^c and Arthur Mory^d
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^a BPC Limited, PO Box 232, West Perth, , WA 6872, [email protected] ^b NECSA, PO Box 582, Pretoria, 0001, , South Africa, [email protected] ^c GSWA, 100 Plain Street, East Perth, , WA 6004, [email protected] ^d GSWA, 100 Plain Street, East Perth, , WA 6004, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2007, Issue ASEG2007 - 19th Geophysical Conference, Dec 2007, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2007ab093
- Published online: 01 Dec 2007

Abstract

Summary

Tar or bitumen deposits in the Canning Basin, Western Australia, indicate possible paths of petroleum migration. Neutron and X-ray tomography is applied to rocks containing biodegraded tar in order to investigate the distribution of petroleum within the pore system of the samples. Neutron tomography allows the imaging of hydrogen-rich components, such as tar and bitumen, within a sample, whereas X-ray tomography assists density analysis of the grains and pore space.

The results indicate that the methodology discriminates excellently between tar and the other rock matrix and open void components. The images permit analysis of the connectivity of pore paths and enable conclusions to be drawn about petroleum migration.

In the case history presented, the images demonstrate the injection of petroleum into a dilated fault zone, and the interaction of the petroleum with the fault gouge material. The images also demonstrate the nature of petroleum movement into sandstone beds, which were in communication with this fault zone.

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2007-12-01

2026-01-21

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References

Allen, P.A. and Allen, J.R., 1990, Basin Analysis: Principles & Applications, Blackwell Science
de Beer, F. and Middleton, M.F., 2006, Neutron radiography imaging, porosity and permeability in porous rocks, South African Journal of Geology, 109, 541-550.
de Beer, F.C. and Strydom, W.J., 2001, Neutron radiography at SAFARI-1 in South Africa, Nondestructive Testing and Evaluation 16, 163-176.
De Beer, F., Zadorozhnaya, V., Middleton, M., and Schoeman, C., 2007, Neutron imaging in South Africa adds value to geosciences and petrophysics, Exploration Geophysics, this volume, in press.
Jasti, J.K., Lindsay, J.T., and Fogler, H.S., 1987, Flow imaging in porous media using neutron radiography, Society of Petroleum Engineers (SPE) Paper 16950, 175-182.
Middleton, M.F., 1991, Sesimic stratigraphy, structural analysis and tectonic evolution of the northern Canning Basin, Western Australia, Western Australia Geological Survey, Record 1991/5.
Middleton, M.F. and Pázsit, I, 1998, Neutron radiography: A technique to support reservoir analysis, Exploration Geophysics 29, 512-515.
Middleton, M. F., Pázsit, I., and Solymar, M., 2001, Petrophysical applications of neutron radiography, Nondestructive Testing and Evaluation 16, 321-333.
Rixon, L.K., 1978, Clay modelling of the Fitzroy Graben, Australian Bureau of Mineral Resources Journal of geology and Geophysics 3, 71-76.

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Article Type: Research Article

Keyword(s): neutron; petroleum; Tar; tomography

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