1887

Abstract

Summary

This study proposes a new method of borehole temperature correction adjusted to the Jeffara basin, southern Tunisia. A Cross-Plot method of correction (non corrected BHT temperatures versus DST temperatures) is proposed leading to the following correction equation - BHT_corrected=1,036 BHT_uncorrected+5,9 which is believed to generate corrected temperatures close to formation temperatures. An abacus to estimate the temperature error (ΔT°) according to depth and to TSC intervals is established.

1D thermal maturity modeling of the Silurian Tannezuft hot-shales based on corrected BHT temperatures using the Cross-Plot method proves that the source rock is mature and that it may have expelled oil at a SATEX= 5% and even at SATEX= 10%. Furthermore, to the North of the sector, the source rock is placed at a Late mature stage with gas expulsion. These results come to explain gas condensate production in boreholes drilled in the studied sector.

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/content/papers/10.3997/2214-4609.201413141
2015-06-01
2024-03-29
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References

  1. Bouaziz, A., Mabrouk El Asmi, A., Skanji, A., El Asmi, K.
    , A new borehole temperature adjustment in the Jeffara basin (South-East Tunisia): inferred source rock maturation and Hydrocarbon generation via 1D Modeling. In press.
    [Google Scholar]
  2. Raulin, C., Frizon de Lamotte, D., Bouaziz, S., Khomsi, S., Mouchot, M., Ruiz, G., and Guillocheau, F.
    , 2011, Late Triassic–early Jurassic block tilting along E-W faults, in southern Tunisia: New interpretation of the Tebaga of Medenine, Journal of African Earth Sciences, v. 61, pp. 94–104.
    [Google Scholar]
  3. Rezouga, N., Belhaj Mohamed, A., Saidi, M. and Bouazizi, I.
    , 2012, Geochemical Correlation and Migration Studies of the South Eastern Part of Tunisia, Society Petroleum Engineers, SPE SPE-150832-PP.
    [Google Scholar]
  4. Waples, D. W., and Ramly, M.
    , 2001, A statistical method for correcting log-derived temperatures, Petroleum Geoscience, v. 7, no. 3, p. 231–240.
    [Google Scholar]
  5. Waples, D. W., Pederson, M. R., and Kuijpers, P.
    , 2004Correction of Single Log-Derived Temperatures in the Danish Central Graben, North Sea Natural Resources Research, v. 13, no. 4, p. 229–239.
    [Google Scholar]
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