1887
Volume 24, Issue 2
  • ISSN: 1354-0793
  • E-ISSN:

Abstract

The rediscovery of the regional approach and of play-based evaluation has played a key role in the success of conventional exploration in new plays and frontier basins over the past two decades. In this paper, we compare the results of a vintage (1995) play assessment of onshore Colombia (Upper Magdalena Basin) with the actual results of exploration over the following 20 years, reconstructing the vintage risk assessment and recomputing yet-to-find (YTF) using different methodologies. The overall perception of chance displayed on the vintage play maps proved to be largely correct, with most of the discoveries made over the following 20 years being within the forecasted ‘sweet spots’ and the higher risk areas being confirmed by the subsequent, less successful exploration drilling. In contrast, the YTF calculated in the vintage evaluation was overestimated. Such an overestimation of YTF seems a persistent problem in the exploration and production (E&P) industry. Recreating and analysing the vintage assessment in light of subsequent exploration results highlighted that field size distribution (FSD), the number of future accumulations and the prospect-specific risk evaluation were the main variables responsible for the overestimation of the YTF. Clearly, calculating reliable YTF is only possible with sound geological, exploration and statistical knowledge of the analysed play.

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2017-09-05
2024-03-29
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References

  1. Baker, R.A., Gehman, H.M., James, W.R. & White, D.A.
    1984. Geologic field number and size assessments of oil and gas plays. AAPG Bulletin, 68, 426-432.
    [Google Scholar]
  2. Barrero, D., Andrés, P., Vargas, C.A. & Martínez, J.F.
    2007. Colombian Sedimentary Basins: Nomenclature, Boundaries and Petroleum Geology, A New Proposal. Agencia Nacional de Hidrocarburos, Bogotá.
    [Google Scholar]
  3. Biteau, J.J., HeidmannJ.C., de JanvryG.C. & Chevallier, B.
    2010. The whys and wherefores of the SPI-PSY method for calculating the world hydrocarbon yet-to-find figures. First Break, 28, 53–64.
    [Google Scholar]
  4. Biteau, J.J., Blaizot, M., Jadonet, D. & de Clarens, P.
    2014. Recent emerging paradigms in hydrocarbon exploration. First Break, 32, 49–58.
    [Google Scholar]
  5. Craig, J.
    1993. Catatumbo Basin (Colombia), Play Fairway Analysis (Mirador Formation). Internal Report. Lasmo Oil (Colombia) Ltd, Bogotá.
    [Google Scholar]
  6. Craig, J., SharpA.D.L., Aya, E. & Bell, J.F.
    1994. Computer applications in play fairway analysis, an example from Colombia. In: Lasmo Oil Ltd internal (eds) Exploration Technical Publication, London, 1, 15–24.
    [Google Scholar]
  7. Fraser, A.J.
    2016. A regional overview of the exploration potential of the Middle East: a case study in the application of play fairway risk mapping techniques. In: Vining, B.A. & Pickering, S.C. (eds) Petroleum Geology: From Mature Basins to New Frontiers – Proceedings of the 7th Petroleum Geology Conference. Geological Society, London, 791–800, https://doi.org/10.1144/0070791
    [Google Scholar]
  8. Gautier, D.L., Dolton, GL., Takahashi, K. & Varnes, K.
    1996. National Assessment of United States Oil and Gas Resources: Results, Methodology and Supporting data. United States Geological Survey, Data Series, 30.
    [Google Scholar]
  9. Grant, S., Milton, N. & Thomson, M.
    1996. Play fairway analysis and risk mapping: an example using the Middle Jurassic Brent Group in the northern North Sea. In: Dore, A.G. & Sinding-Larsen, R. (eds) Quantification and Prediction of Hydrocarbon Resources. Norwegian Petroleum Society, Special Publications, 6, 167–181.
    [Google Scholar]
  10. Hood, K.C., South, B.C., Dennis Walton, F., Baldwin, O.D. & Burroughs, W.A.
    2000. Use of geographic information systems in hydrocarbon resource assessment and opportunity analysis. In: Coburn, T.C. & Yarus, J.M. (eds) Geographic Information Systems in Petroleum Exploration and Development. American Association of Petroleum Geologists, Computer Application in Geology, 4, 173–186.
    [Google Scholar]
  11. Jones, M.C., Chaves, F. & Dourado, J.D.
    2010. The potential for new discoveries of oil and gas in the shallow waters of the Campos Basin, Brazil. Search and Discovery Article #10253, adapted from an extended abstract presented at the AAPG International Conference and Exhibition , 15–18 November 2009, Rio de Janeiro, Brazil.
    [Google Scholar]
  12. Lasmo Oil (Colombia) Ltd
    1993. Colombia Basins Review. Internal Report.Lasmo Oil (Colombia) Ltd, Bogotá.
    [Google Scholar]
  13. Magoon, L.B. & Dow, W.G.
    1994. The petroleum system. In: Magoon, L.B. & Dow, W.G. (eds) The Petroleum System – From Source to Trap. American Association of Petroleum Geologists, Memoirs, 60, 3–24.
    [Google Scholar]
  14. Milkov, A.V.
    2015. Risk tables for less biased and more consistent estimation of probability of geological success (PoS) for segments with conventional oil and gas prospective resources. Earth-Science Reviews, 150, 453–476.
    [Google Scholar]
  15. Osorio, M. & Silva, M.
    1995. Upper Magdalena Basin, Colombia, Play Fairway Analysis. Internal Report.Lasmo Oil (Colombia) Ltd, Bogotá.
    [Google Scholar]
  16. Otto, S., Wilson, T., Lidgett, M. & Rooke, J.
    2007. Using custom-built GIS tools to facilitate estimation of yet-to find hydrocarbon resources. First Break, 25, 73–78.
    [Google Scholar]
  17. Ramon, J.C. & Rosero, A.
    2006. Multiphase structural evolution of the western margin of the Girardot subbasin, Upper Magdalena Valley, Colombia. Journal of South American Earth Science, 21, 493–509.
    [Google Scholar]
  18. Schamel, S.
    1989. Middle and Upper Magdalena basins, Colombia. In: Biddle, K.T. (ed.) Active Margin Basins. American Association of Petroleum Geologists, Memoirs, 52, 283–301.
    [Google Scholar]
  19. Schmoker, W.J. & Klett, T.R.
    1999. U.S. Geological Survey Assessment Model for Undiscovered Conventional Oil, Gas, and NGL Resources – The Seventh Approximation. United States Geological Survey Bulletin, 2165.
    [Google Scholar]
  20. Seubert, B.W.
    2012. Work Flows For Play Fairway Mapping Using Generic GIS Methods . PetroPEP, Jakarta, Indonesia, http://www.petropep.com
  21. USGS
    . 2000. USGS World Petroleum Assessment 2000. New Estimates of Undiscovered Oil and Natural Gas Outside the United States. United States Geological Survey Fact Sheet FS-062-03. United States Geological Survey, Reston, VA, https://pubs.usgs.gov/fs/fs-062-03/FS-062-03.pdf
  22. Villamil, T.
    1999. Campanian–Miocene tectonostratigraphy, depocenter evolution and basin development of Colombia and western Venezuela. Palaeogeography, Palaeoclimatology, Palaeoecology, 153, 239–275.
    [Google Scholar]
  23. White, D.A.
    1992. Selecting and assessing plays. In: Foster, N.H. & Beaumont, E.A. (eds) The Business of Petroleum Exploration. Treatise of Petroleum Geology Handbook of Petroleum Geology Series. American Association of Petroleum Geology, Tulsa, OK, 87–94.
    [Google Scholar]
  24. Wood Mackenzie
    . 2016. Colombia Upper Magdalena Valley Exploration Basin . Wood Mackenzie, Edinburgh.
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