1887
Volume 28, Issue 1-2
  • ISSN: 0812-3985
  • E-ISSN: 1834-7533

Abstract

The Ravva oil and gas field is located offshore eastern India in the Krishna-Godavari Basin. Command Petroleum (India) Pty. Limited was granted operatorship of the field in October 1994 by the government of India, on behalf of a Joint Venture consortium that includes Oil and Natural Gas Corporation (ONGC) Ltd, the Indian national oil company; Videocon Petroleum Ltd; and Ravva Oil Ltd (Marubeni).

One of the first geophysical projects to be initiated in the development plan was reprocessing of the Ravva 3-D seismic dataset, acquired in early 1990 using a single streamer/single source configuration. The geography of the coastline and the shallow water depths in the area (<20 m) required a shooting direction that was predominantly in the strike direction but somewhat oblique to the main structural elements of the field.

This reprocessing project was initiated to achieve an optimum dataset for siting of the development/exploration wells over the next two to three years. Recent developments in computer hardware and the applications to 3-D seismic data processing have allowed the implementation of 3-D prestack migration to develop into a usable process for the practising explorationist.

The reprocessing project is described, with particular emphasis on the testing and analyses that led to use of 3-D prestack time migration to image the data volume. Examples show the improvements in stacking velocity definition and seismic imaging that have been achieved using 3-D seismic processing techniques that were not practicably available when the dataset was initially processed in 1990.

© 1997 ASEG
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1997-03-01
2026-01-14

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References

  1. Atkinson, W.J., Hughes, F.E. and Smith, C.B., 1984, Areview of the kimberlitic rocks of Western Australia: p. 195-224 In Kornprobst, J., ed., Kimberlites 1: Kimberlites and related rocks. Elselvier, Amsterdam.
  2. Crostella, A., 1995, The structural evolution and the hydrocarbon potential of the Merlinleigh and Byro Sub-basins, Carnarvon Basin, Western Australia: Western Australia Geological Survey, Perth, Report 45, 36p.
  3. Geological Survey of Western Australia, 1996a, Merlinleigh Sub-basin Bouguer gravity image, 1:250 000: Western Australia Geological Survey, Perth.
  4. Geological Survey of Western Australia, 1996b, Merlinleigh Sub-basin first vertical derivative of Bouguer gravity image, 1:250 000: Western Australia Geological Survey, Perth.
  5. Geological Survey of Western Australia, 1996c, Merlinleigh Sub-basin first vertical derivative of total magnetic intensity image, 1:250 000: Western Australia Geological Survey, Perth.
  6. Geological Survey of Western Australia, 1996d, Merlinleigh Sub-basin ternary radiometric image, 1:250 000: Western Australia Geological Survey, Perth.
  7. Geological Survey of Western Australia, 1996e, Merlinleigh Sub-basin total magnetic intensity image, 1:250 000: Western Australia Geological Survey, Perth.
  8. Glover, J, 1964, Petrological report: In Pearson, G. R., 1964, Quail 1 well completion report by West Australian Petroleum Pty Ltd. Western Australia Geological Survey, S-series No. S67A1 (unpublished).
  9. Hocking, R.M., Moors, H.T. and Van de Graaff, W.J.E., 1987, The geology of the Carnarvon Basin, W.A.: Western Australia Geological Survey, Bulletin 133, 289p.
  10. Iasky, R.P and Shevchenko, S., 1996, Onshore northern Perth Basin gravity project: Western Australia Geological Survey, Record 1995/6 (unpublished).
  11. Jaques. A.L., Lewis, J.D. and Smith, C.B., 1986, The kimberlites and lamproites of Western Australia: Western Australia Geological Survey, Bulletin 132, 268p.
  12. Lehmann, P.R., 1967, Kennedy Range 1 well completion report by West Australian Petroleum Pty Ltd: Western Australia Geological Survey, S-series No. S322A1 (unpublished).
  13. Mory, A.J., 1996a, GSWA Ballythanna 1 well completion report: Western Australia Geological Survey, Record 1996/6 (unpublished).
  14. Mory, A.J. 1996b, GSWA Gneudna 1 well completion report: Western Australian Geological Survey, Record 1996/7 (unpublished).
  15. Mory, A.J. and Iasky, R.P., 1996, Stratigraphy and structure of the onshore northern Perth Basin, Western Australia: Western Australia Geological Survey, Perth, Report 46, 101pp.
  16. Percival, I.G and Cooney, P.M., 1985, Petroleum geology of the Merlinleigh Sub-basin: The APEA Journal 25, 190-203.
  17. Reid, A.B., Allsop, J.M., Granser, H., Millett, A.J. and Somerton, I.W., 1990, Magnetic interpretation in three dimensions using Euler deconvolution: Geophysics 55, 80-91.
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  • Article Type: Research Article
Keyword(s): 3-D; India; prestack migration; Ravva oilfield

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