1887

Abstract

Summary

Fault zones in porous sandstones can commonly be divided into two parts: a fault core and a damage zone. Both fault zone elements will influence sub-surface fluid flow and must be treated separately to create a geologically realistic model. The fault core can be implemented in the model as a transmissibility multiplier (TM) while the damage zone can be implemented by modifying the grid permeability in the cells adjacent to the model faults. Each of the input parameters used in calculating the TM and damage zone permeability modification is subject to geological uncertainty. We test the impact of varying input parameters through two methods: i) calculating flow indicator fault properties from the static model, and ii) employing a simplified flow-based connectivity calculation, returning dynamic measures of model connectivity. Our results indicate that fluid flow indicator fault properties are weakly correlated with measures of dynamic behaviour. In particular, models with low fault transmissibility show a much greater range of dynamic behaviour, and are less predictable, than models with high fault transmissibility. We ascribe this to the greater complexity of flow paths expected when a highly compartmentalized model contains faults that are likely to be baffles or barriers to cross-fault flow.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201902282
2019-09-08
2020-04-04
Loading full text...

Full text loading...

References

  1. Freeman, S.R., Harris, S.D. and Knipe, R.J.
    [2010] Cross-fault sealing, baffling and fluid flow in 3D geological models: Tools for analysis, visualization and interpretation. Geological Society Special Publication, 347, 257–282.
    [Google Scholar]
  2. Jolley, S.J., Dijk, H., Lamens, J.H., Fisher, Q.J., Manzocchi, T., Eikmans, H. and Huang, Y.
    [2007] Faulting and fault sealing in production simulation models: Brent Province, northern North Sea. Petroleum Geoscience, 13, 321–340.
    [Google Scholar]
  3. Lindsay, N.G., Murphy, F.C., Walsh, J.J. and Watterson, J.
    [1993] Outcrop studies of shale smears on fault surfaces. In: Flint, S.S. and Bryant, I.D. (Eds.)The geological modelling of hydrocarbon reservoirs and outcrop analogues.113–123.
    [Google Scholar]
  4. Manzocchi, T., Walsh, J.J., Nell, P. and Yielding, G.
    [1999]. Fault transmissibility multipliers for flow simulation models. Petroleum Geoscience, 5, 53–63.
    [Google Scholar]
  5. Qu, D., and Tveranger, J.
    [2016]. Incorporation of deformation band fault damage zones in reservoir models. AAPG Bulletin, 100, 423–443.
    [Google Scholar]
  6. Yielding, G., Freeman, B. and Needham, D.T.
    [1997]. Quantitative fault seal prediction. AAPG Bulletin, 81, 897–917.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201902282
Loading
/content/papers/10.3997/2214-4609.201902282
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