1887

Abstract

Summary

When risking faulted structures, across-fault juxtaposition and or membrane seal are key issues. Generally, this work is done on a “best-guess” model. The application of SGR methods in reservoir / seal systems that have moderate Vshale values artificially increases predicted column heights. In a risking processes these large columns are discounted through other geologic risk factors. Faults in Miri, Sarawak, have been systematically mapped in outcrop in great detail to measure the strike variability of fault rocks. This work greatly helps to understand the limitation of membrane seal algorithms. To illustrate the implications to subsurface risking, a validation will be presented in which observed hydrocarbon water contacts are compared with probabilistic models for both juxtaposition and SGR. A comprehensive review of a set of fields in The Timor Sea shows that probabilistic juxtaposition models more accurately predict hydrocarbon water contacts than calibrated SGR single “best” technical models.

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/content/papers/10.3997/2214-4609.201902287
2019-09-08
2024-03-28
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References

  1. Allan, U.S.
    , 1989, Model for hydrocarbon migration and entrapment within faulted structures, AAPG Bulletin, v. 73, p. 803–811.
    [Google Scholar]
  2. Castillo, D. A., Bishop, D. J., Donaldson, I., Kuek, D., de Ruig, M., Trupp, M., and Shuster, M. W.
    , 2000. Trap integrity in the Laminaria High – Nancar Trough region, Timor Sea: Prediction of fault seal failure using well-constrained stress tensors and fault surfaces interpreted from 3D seismic: APPEA Journal (Australian Petroleum Production and Exploration Association), v. 30, p. 151–173.
    [Google Scholar]
  3. De Ruig, M. J., Trupp, M., Bishop, D. J., Kuek, D., and Castillo, D.
    , 2000. Fault architecture and the mechanics of fault reactivation in the Nancar Trough/Laminaria area of the Timor Sea, northern Australia: APPEA Journal (Australian Petroleum Production and Exploration Association), v. 30, p. 174–193.
    [Google Scholar]
  4. Murray, T.A., Power, W.L., Johnson, T. J., and Christie, G. J.
    2019Validation and Analysis Procedures for Juxtaposition and Membrane Fault Seals in Oil and Gas Exploration (inpress Geological Society of London)
    [Google Scholar]
  5. Palu, T., Hall, L., Grosejean, E., Edwards, D., Rollet, N., Higgins, K., Boreham, C., Murray, A., Nguyen, D., Khider, K., and Buckler, T.
    , 2017Integrated petroleum systems analysis to understand the source of fluids in the Browse Basin, Australia, The APPEA Journal57(2):781
    [Google Scholar]
  6. Sosio de Rosa, S., Shipton, Z., Lunn, R., Kremer, Y., and Murray, T.
    , 2018. Along-strike fault core thickness variations of a fault in poorly lithified sediments, Miri (Malaysia). Journal of Structural Geology, v. 116, p. 189–206.
    [Google Scholar]
  7. Yielding, G.
    , 2002. Shale gouge ratio - calibration by geohistory, in Hydrocarbon Seal Quantification, eds A. G.Koestler and R.Hunsdale. NPF Special publication 11, Elsevier ScienceAmsterdam, p. 1–15.
    [Google Scholar]
  8. Vrolijk, P. J., Urai, J. L., and Ketterman, M.
    , 2016, Clay smear: review of mechanisms and applications, Journal of Structural Geology, v. 86, p. 95–152.
    [Google Scholar]
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