In-situ stresses in the Southern Perth Basin at the GSWA Harvey-1 well site
Vamegh Rasouli 1 4 Marina Pervukhina 2 Tobias M. Müller 2 Roman Pevzner 31 Department of Petroleum Engineering, Curtin University, Perth, WA 6151, Australia.
2 CSIRO Earth Science and Resource Engineering, Kensington, WA 6151, Australia.
3 Department of Exploration Geophysics, Curtin University, Perth, WA 6151, Australia.
4 Corresponding author. Email: v.rasouli@curtin.edu.au
Exploration Geophysics 44(4) 289-298 https://doi.org/10.1071/EG13046
Submitted: 10 May 2013 Accepted: 19 October 2013 Published: 25 November 2013
Abstract
Knowledge of orientations and magnitudes of present-day stresses is important for different applications including fault reactivation, borehole stability and CO2 injection studies. As part of the West Hub Carbon Capture and Storage project, the GSWA Harvey-1 well was drilled in early 2012. It is located ~115 km south of Perth and is used to assess the suitability for CO2 underground storage. The aim of this study is to estimate the mechanical properties and state of stress fields in the Southern Perth Basin. The analysis is based on the newly acquired log and VSP data and results of a rock mechanical model including vertical profiles of elastic and strength properties as well as identified breakout zones. The results indicate that the stress regime in the region is dominantly strike-slip. It changes to a reverse faulting system at shallow depths of below ~900 m. Stress field orientation is obtained from borehole breakout analysis. The average azimuth of the maximum horizontal stress is 106° and the standard deviation is 10°. This direction of the maximum horizontal stress is broadly consistent with the east–west direction earlier reported for the Perth Basin.
Key words: borehole breakouts, GSWA Harvey-1, in-situ stresses, Southern Perth Basin, strike-slip.
References
Bradford, I. D. R., Fuller, J., Thompson, P. J, and Walsgrove, T. R., 1998, Benefits of assessing the solids production risk in a North Sea reservoir using elastoplastic modelling: SPE/ISRM Eurock 98, Trondheim, Norway, 261–269.Castagna, J. P., Batzle, M. L., and Kan, T. K., 1993, Rock physics - The link between rock properties and AVO response, in J. P. Castagna, and M. M. Backus, eds., Offset-dependent reflectivity – Theory and practice of AVO analysis: Society of Exploration Geophysics, 124–157.
Delle Piane, C., Olierook, H. K. H., Timms, N. E., Saeedi, A., Esteban, L., Rezaee, R., Mikhaltsevitch, V., Iglauer, S., and Lebedev, M., 2013, Facies-based rock properties distribution along the Harvey 1 stratigraphic well: CSIRO Report Number EP133710.
DMP, 2012, South West CO2 Geosequestration Hub: Department of Mines and Petroleum, Government of Western Australia.
DMP, 2013, Harvey 1 stratigraphic well research outcomes, August 2013. South West CO2 Geosequestration Hub.
Fjaer, J., Holt, R. M., Horsrud, P., Raaen, A. M., and Risenes, R., 2008, Petroleum-related rock mechanics (2nd edition), Developments in Petroleum Science Vol. 53: Elsevier.
Gardner, G. H. F., Gardner, L. W., and Gregory, A. R., 1974, Formation velocity and density – diagnostic basics for stratigraphic traps: Geophysics, 39, 770–780
| Formation velocity and density – diagnostic basics for stratigraphic traps:Crossref | GoogleScholarGoogle Scholar |
Hillis, R. R., and Reynolds, S. D., 2000, The Australian stress map.: Journal of the Geological Society (London), 157, 915–921
| The Australian stress map.:Crossref | GoogleScholarGoogle Scholar |
King, R. C., Hillis, R. R., and Reynolds, S. D., 2008, In situ stresses and natural fractures in the Northern Perth Basin, Australia: Australian Journal of Earth Sciences, 55, 685–701
Morales, R. H., and Marcinew, R. P., 1993, Fracturing of high-permeability formations: mechanical properties correlations: Society of Petroleum Engineers Annual Technical Conference and Exhibition, 3–6 October 1993, Houston, Texas, SPE paper no. 26561.
Plumb, R. A., 1994, Influence of composition and texture on the failure properties of clastic rocks: Rock Mechanics in Petroleum Engineering, 29–31 August 1994, Delft, The Netherlands, SPE paper no. 28022.
Rasouli, V., Zacharia, J., and Elike, M., 2011, The influence of perturbed stresses near faults on drilling strategy: a case study in Blacktip field, North Australia: Journal of Petroleum Science Engineering, 76, 37–50
| The influence of perturbed stresses near faults on drilling strategy: a case study in Blacktip field, North Australia:Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXit1Wlur0%3D&md5=84769063eab890549f7eb07bc1ec01e7CAS |
Reinecker, J., Tingay, M., and Müller, B., 2003, Borehole breakout analysis from four-arm caliper logs: World Stress Map Project, Guidelines. Available at http://dc-app3-14.gfz-potsdam.de/pub/stress_data/stress_data_frame.html
Van Ruth, P. J., 2006, Geomechanics: Vlaming sub-basin, Western Australia: CO2CRC Report Number RPT06-0043, 30 pp.
Zoback, M. (ed.), 2007, Reservoir geomechanics: Cambridge University Press.