Assessing the repeatability of reflection seismic data in the presence of complex near-surface conditions co2crc otway project, Victoria, Australia

Yousuf Al-Jabri; Milovan Urosevic; Anton Kepic; Brian Evans

doi:10.1071/ASEG2009ab016

ISSN: 2202-0586
E-ISSN:

oa Assessing the repeatability of reflection seismic data in the presence of complex near-surface conditions co2crc otway project, Victoria, Australia
Authors Yousuf Al-Jabri^a,c, Milovan Urosevic^b,d, Anton Kepic^b,e and Brian Evans^b,f
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^a P.D.O., Oman, Curtin University of Technology and CO2CRC, , Perth, , Australia, , ^b Curtin University of Technology and CO2CRC, , Perth, , Australia ^c [email protected] ^d [email protected] ^e [email protected] ^f B.Evans@@curtin.edu.au
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2009, Issue ASEG2009 - 20th Geophysical Conference, Dec 2009, p. 1 - 5
DOI: https://doi.org/10.1071/ASEG2009ab016
- Published online: 01 Dec 2009

Abstract

Introduction

A depleted Gas Field (Naylor) located in the onshore Otway Basin of Australia (Figure 1) is situated in a tilted fault block structure. After some years of gas production from Naylor-1, the field was abandoned. Subsequently, the field is being used for CO2 sequestration as a demonstration project, and will be used for monitoring the migration of CO2 during the injection process into a sandstone reservoir 300 m down-dip from the monitoring well. Optimum seismic repeatability is critical to the monitoring of the field. In order to assess the relative influences of source types and environmental conditions, a series of repeated 2D seismic test surveys were performed before injection commenced. It was discovered that the absorption of energy in the near surface had much greater effect than anticipated.

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References

Al-Jabri Y., Urosevic M., and Kepic A., 2008, The effects of the near-surface weathered zone on the CO2 time-lapse monitoring program at Naylor-1, CO2CRC Otway Project, Victoria, Australia; CO2CRC Symposium 2008, Queenstown, New Zealand, 1 – 5 December 2008 (accepted).
Al-Jabri Y. and Urosevic M., 2008, The applicability of vibroseis sources for the land seismic time-lapse surveys; CO2 sequestration field, COCRC Otway Project, Victoria, Australia; Vibroseis Workshop 2008 – Prague, Czech Republic, 13 – 15 October 2008 (accepted).
Al-Jabri Y., Urosevic M., and Kepic A., 2008, The effect of corrugated Lime-stone and the changing of the near surface conditions on CO2 monitoring program at Naylor-1, CO2CRC Otway Project, Victoria, Australia; First EAGE CO2 Geological Storage Workshop - Budapest, Hungary, 29 & 30 September 2008.
Al-Jabri Y., Urosevic M., Evans B. and Sherlock D., 2008, Understanding seismic repeatability in the presence of irregular near surface conditions (karst), CO2CRC Otway Project, Victoria, Australia; SEG & EAGE Summer Research Workshop 2008 - Vancouver, Canada, 7-12 September 2008.
Baker Gregory S., 1999. Processing Near-Surface Seismic-Reflection Data: A Primer. SEG Course Notes Series9. Tulsa: Department of geology. State University of New York at Buffalo, Society of Exploration Geophysicists.
Calvert, R., 2005, Insights and methods for 4D reservoir monitoring and characterization: Society of Exploration Geophysicists. CGG, 2000, Final Report: Seismic Data Processing OCV00 Curdie Vale 3D; period: May September for Santos, Ltd.
Ruiping Li, Milovan Urosevicl, and Kevin Dodds; 2006. Prediction of 4D seismic responses for The Otway Basin CO2 sequestration site. Cooperative Research Centre for Greenhouse Gas Technologies. Department of Exploration Geophysics, Curtin University of Technology, CSIRO Petroleum, AustraliaSherlock D., Urosevic M., Kepic A., and Dodds K., 2007; Time-lapse seismic monitoring of Otway Project; planning and acquisition repeatability testing, CO2CRC Symposium 2007, Perth, Australia.
Urosevic, M., Sherlock D., Kepic, A., Nakanishi S. and Tcherkashnev S., K., Time lapse VSP program for Otway basin CO2 sequestration pilot project”, 70th EAGE Conference & Exhibition — Rome, Italy, 9-12 June 2008.
Urosevic, M., Sherlock D., Kepic, A., and Dodds, K., “Land seismic acquisition repeatability for time-lapse monitoring of CO2 sequestration” 19th International Conference of Australian Society of Exploration Geophysics, Perth, WA (2007b).

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Article Type: Research Article

Keyword(s): Time-Lapse/near surface conditions

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oa Assessing the repeatability of reflection seismic data in the presence of complex near-surface conditions co2crc otway project, Victoria, Australia

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