The Stybarrow Field - a 4D Case Study

Guy Duncan; Chris Hurren; Robin Hill; Mark Stanley; Jack Woodward; David Lumley

doi:10.1071/ASEG2013ab276

ISSN: 2202-0586
E-ISSN:

oa The Stybarrow Field - a 4D Case Study
Authors Guy Duncan^a, Chris Hurren^b, Robin Hill^c, Mark Stanley^d, Jack Woodward^e and David Lumley^f
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^a BHP Billiton Petroleum, 125 St Georges Tce, Perth, , Australia, [email protected] ^b BHP Billiton Petroleum, 125 St Georges Tce, Perth, , Australia, [email protected] ^c BHP Billiton Petroleum, 125 St Georges Tce, Perth, , Australia, [email protected] ^d Formerly BHP Billiton Petroleum Currently CGG, , Melbourne, , VIC, , Australia, [email protected] ^e Formerly BHP Billiton Petroleum Currently Apache, , Perth, , WA, , Australia, [email protected] ^f University of Western Australia, 35 Stirling Hwy, Crawley, , WA, , Australia, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2013, Issue ASEG2013 - 23rd Geophysical Conference, Dec 2013, p. 1 - 5
DOI: https://doi.org/10.1071/ASEG2013ab276
- Published online: 01 Dec 2013

Abstract

The Stybarrow oil Field was discovered in 2003 in the Exmouth Sub Basin, offshore Western Australia, with production starting in November 2007. A 4D seismic modelling study conducted early in the field’s life indicated that 4D at Stybarrow would be important for reservoir monitoring. The modelling indicated that changes in reservoir pressure caused by water injection and changes in water saturation caused by reservoir depletion should be observable on 4D seismic data. The first monitor survey at Stybarrow was recorded in November 2008, 12 months after the start of production and a second monitor in May, 2011.

Geophysical challenges at Stybarrow included very strong azimuthal anisotropy, variable acquisition directions and strong currents. Azimuthal anisotropy produced large artefacts and needed to be corrected to extract useful 4D information from the data.

The results of the surveys were in agreement with the 4D modelling and a development well was drilled on the basis of the first monitor survey. The 4D surveys have proven to be an important tool at Stybarrow for optimal reservoir monitoring and production.

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2026-01-24

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References

Bishop, K., Osadchuk, A., and Stanley, M., 2010, Analysis methodology for azimuthal anisotropy: 72nd EAGE Conference and Exhibition.
Brajanovski, M., Gurevich, B., Tokajicek, T., Nadri, D., Bona, A., and Duncan, G., 2009, Estimation of stress induced azimuthal anisotropy - AVO modelling: 72nd EAGE Conference and Exhibition.
Corrigan, D., Withers, R., Darnall, J., and Skopinski, T., 1996, Fracture mapping from azimuthal velocity analysis using 3-D surface seismic data: 66th SEG Annual Meeting, Expanded Abstracts, 1834-1837.
Hill, R., O’Halloran, G., Napalowski, R., Wanigaratne, B., Elliott, A., and Jackson, M., 2008. Development of the Stybarrow Oil Field, Western Australia: SPE Asia Pacific Oil and Gas Conference and Exhibition, Perth.
Hurren, C., Broad, C., Duncan, G., Hill, R., and Lumley, D., 2012, Sucessful application of 4D seismic in the Stybarrow Field, Western Australia: SPE Asia Pacific Oil and Gas Conference and Exhibition, Perth.
Lumley, D., Meadows, M., Cole, S., and Adams, D., 2003, Estimation of reservoir pressure and saturations by crossplot inversion of 4D seismic attributes: 73rd SEG Annual Meeting, Expanded Abstracts, 1834-1837.
Pevzner, R., Gurevich, B., and Duncan, G., 2009, Estimation of azimuthal anisotropy from VSP data using multicomponent velocity analysis: 72nd EAGE Conference and Exhibition.
Ridsdill-Smith, T., Flynn, D., and Darling, S., 2007, Benefits of two-boat 4D acquisition: 77th SEG Annual Meeting, Expanded Abstracts, 2954-295

/content/journals/10.1071/ASEG2013ab276

Article Type: Research Article

Keyword(s): 4D; anisotropy; Stybarrow; time lapse

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