A study of the structural controls on oil recovery from shallow-marine reservoirs

Tom Manzocchi, John D. Matthews, J. A. Strand, Jonathan N. Carter, Arne Skorstad, J. A. Howell, Karl D. Stephen, J. J. Walsh

    Research output: Contribution to journalArticle

    Abstract

    The differences in oil production are examined for a simulated waterflood of faulted and unfaulted versions of synthetic shallow-matine reservoir models with a range of structural and sedimentological characteristics. Fault juxtaposition can reduce the economic value of the reservoirs by up to 30%, with the greatest losses observed in models with lower sedimentological aggradation angles and faults striking parallel to waterflood direction. Fault rock has a greater effect than fault juxtaposition on lowering the economic value of the reservoir models in the compartmentalized cases only - and only when the fault rock permeability model is based on the least permeable published laboratory data. Moderately sealing faults can increase the economic value of reservoirs except when the main flow direction is parallel to the faults. These results arise from the dependence of economic value on both sweep efficiency and production rate. Simple predictors of fault juxtaposition and fault-rock heterogeneity have been established and combined with two-dimensional considerations from streamline theory in an attempt to capture quantitatively the change in economic reservoir value arising from faults. Despite limitations associated with the three-dimensional role of juxtaposition, the results are encouraging and represent a step towards establishing a rapid transportable predictor of the effects of faults on production. © 2008 EAGE/Geological Society of London.

    Original languageEnglish
    Pages (from-to)55-70
    Number of pages16
    JournalPetroleum Geoscience
    Volume14
    Issue number1
    DOIs
    Publication statusPublished - Feb 2008

    Fingerprint

    structural control
    oil
    economics
    rock
    aggradation
    sealing
    oil production
    permeability

    Keywords

    • Faults
    • Multipliers
    • Oil production
    • Sensitivity
    • Shallow marine
    • Transmissibility
    • Uncertainty

    Cite this

    Manzocchi, T., Matthews, J. D., Strand, J. A., Carter, J. N., Skorstad, A., Howell, J. A., ... Walsh, J. J. (2008). A study of the structural controls on oil recovery from shallow-marine reservoirs. Petroleum Geoscience, 14(1), 55-70. https://doi.org/10.1144/1354-079307-786
    Manzocchi, Tom ; Matthews, John D. ; Strand, J. A. ; Carter, Jonathan N. ; Skorstad, Arne ; Howell, J. A. ; Stephen, Karl D. ; Walsh, J. J. / A study of the structural controls on oil recovery from shallow-marine reservoirs. In: Petroleum Geoscience. 2008 ; Vol. 14, No. 1. pp. 55-70.
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    Manzocchi, T, Matthews, JD, Strand, JA, Carter, JN, Skorstad, A, Howell, JA, Stephen, KD & Walsh, JJ 2008, 'A study of the structural controls on oil recovery from shallow-marine reservoirs', Petroleum Geoscience, vol. 14, no. 1, pp. 55-70. https://doi.org/10.1144/1354-079307-786

    A study of the structural controls on oil recovery from shallow-marine reservoirs. / Manzocchi, Tom; Matthews, John D.; Strand, J. A.; Carter, Jonathan N.; Skorstad, Arne; Howell, J. A.; Stephen, Karl D.; Walsh, J. J.

    In: Petroleum Geoscience, Vol. 14, No. 1, 02.2008, p. 55-70.

    Research output: Contribution to journalArticle

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    Manzocchi T, Matthews JD, Strand JA, Carter JN, Skorstad A, Howell JA et al. A study of the structural controls on oil recovery from shallow-marine reservoirs. Petroleum Geoscience. 2008 Feb;14(1):55-70. https://doi.org/10.1144/1354-079307-786