1887

Abstract

Summary

The giant sub-salt discoveries from the conjugate Brazilian margin give encouraging support for analogous hydrocarbon potential offshore Angola. The challenge is to image the deep geology beneath complex salt geometries to confidently predict reservoir properties and distribution. Pre-stack relative inversion was performed on dual-sensor broadband 2D data from the Kwanza Basin and was correlated to the pre-salt carbonate succession in a discovery well. Well log analysis and rock physics confirm what is observed on the relative acoustic impedance volume. Two distinct types of carbonates with significantly different reservoir properties can be discriminated on the inversion volumes. This result demonstrates that the additional bandwidth from acquired deep-tow broadband seismic can reliably map reservoir properties even in deep challenging geological environments.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201412914
2015-06-01
2024-04-25
Loading full text...

Full text loading...

References

  1. Brownfield, M.E. and Charpentier, R.R.
    [2006] Geology and total petroleum systems of the West-Central Coastal Province (7203). U.S. Geological Survey Bulletin, 2207-B, 52 p.
    [Google Scholar]
  2. Chakhmakchev, A. and Rushworth, P.
    [2010] Global overview of recent exploration investment in deepwater – new discoveries, plays and exploration potential. Adapted from oral presentation at AAPG Convention, September 12–15, 2010, Calgary, Alberta, Canada
    [Google Scholar]
  3. Farouki, M., Long, A. and TenghamnR.
    [2010] Enhanced resolution, imaging and interpretability: dual-sensor towed streamer data examples from around the World. Geohorizons. Vol 15, No.1, p19–23
    [Google Scholar]
  4. Henry, S.G., Sebastio, L., Kumar, N., Sebastio, A. and Venkatramen, S.
    [2010] Tupi’s Conjugate: New Pre-salt Plays in the Angolan Offshore. AAPG Annual Convention and ExhibitionApril 11–14, 2012, New Orleans, Louisiana, USA, Abstract
    [Google Scholar]
  5. Özdemir, H.
    [2009] Unbiased deterministic seismic inversion: more seismic, less model. First Break, 27(11), 43–50.
    [Google Scholar]
  6. Pasley, M.A., Wilson, E.N., AbreuV.S., Brandao, M.G.O and Telles, A.S.
    [1998] Lower Cretaceous Stratigraphy and Source Rock Distribution in Pre-salt Basins of the South Atlantic: Comparison of Angola and Southern Brazil. ABGP/AAPG International Conference and ExhibitionNovember 8–11, 1998, Rio de Janeiro, Brazil, Abstract
    [Google Scholar]
  7. Uncini, G., Brandao, M. and GiovannelliA.
    [1998] Neocomian – Upper Aptian Pre-Salt Sequence of Southern Kwanza Basin: A Regional View. ABGP/AAPG International Conference and ExhibitionNovember 8–11, 1998, Rio de Janeiro, Brazil, Abstract
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201412914
Loading
/content/papers/10.3997/2214-4609.201412914
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error