Amplitude with Offset and Direct Hydrocarbon Indicators Enable Mapping of Gas Reservoirs in the Golden Beach, Baleen and Patricia Fields, Gippsland Basin, Victoria

P. J. Wolter; P. L. Harrison

doi:10.1071/EG988205

ISSN: 0812-3985
E-ISSN: 1834-7533

Amplitude with Offset and Direct Hydrocarbon Indicators Enable Mapping of Gas Reservoirs in the Golden Beach, Baleen and Patricia Fields, Gippsland Basin, Victoria
Authors P. J. Wolter^a and P. L. Harrison^a
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^a LASMO Energy Australia Ltd., G.PO. Box 976, Brisbane, , Queensland, 4001, Australia
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 19, Issue 1-2, Mar 1988, p. 205 - 213
DOI: https://doi.org/10.1071/EG988205
- Published online: 01 Mar 1988

Abstract

Definition of gas reservoirs in several fields in the offshore Gippsland Basin, Victoria has been enhanced by use of amplitude variation with offset, direct hydrocarbon indicators and seismic modelling. Direct indicators include bright spots, flat spots and phase reversals associated with reduced acoustic impedance in the gas zones.

The techniques have generally worked successfully at the Golden Beach Field and at the Baleen and Patricia gas discoveries at subsea depths from 600–700 m.

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References

Blackburn, G. (1986)—‘Director Hydrocarbon Detection; Some Examples’. Exploration Geophysics17(2) 59–66.
Gassaway, G. S., Brown, R. A. and Bennett, L. E. (1987)— ‘Pitfalls in Seismic Amplitude Versus Offset Analysis Case Histories’, Exploration Geophysics18Nos 1/2, pp. 65–70.
Marlow, R. B. (1978)—‘Golden Beach: A Bright Spot’. The APEA Journal, 1978, pp. 109–115.
Ostrander, W. J. (1984)—‘Plane-wave Reflection Coefficients for Gas Sands at Non-Normal Angles of Incidence’, Geophysics49, No. 10, pp. 1637–1648.
Varsek, J. L., Lausten, C. D., Blott, J. E. and Livingston, J. B. (1987)—‘Seismic Delineation of Acoustically Transparent Reservoirs: A Case History’, Recorder (Journal of the Canadian Society of Exploration Geophysicists), Volume XII, Number 4, pp. 6–14.

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Article Type: Research Article

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Amplitude with Offset and Direct Hydrocarbon Indicators Enable Mapping of Gas Reservoirs in the Golden Beach, Baleen and Patricia Fields, Gippsland Basin, Victoria

Abstract

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