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Tom Manzocchi1, Deirdre A Walsh1, Marcus Carneiro1

  • 1iCRAG and Fault Analysis Group, UCD School of Earth Sciences, University College Dublin, Dublin 4, Ireland.

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Summary
This summary is machine-generated.

A new compression method decouples facies proportion from connectivity in geological modeling. This allows for independent definition of both parameters, improving the accuracy of models for natural systems.

Keywords:
Amalgamation ratioCompression algorithmConnectivityFacies model

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Area of Science:

  • Geological modeling
  • Sedimentology
  • Reservoir engineering

Background:

  • Traditional facies models constrain proportions, yielding unconstrained connectivity.
  • High net:gross geological systems often exhibit lower connectivity than models predict.
  • Existing methods struggle to independently control facies proportion and connectivity.

Purpose of the Study:

  • Introduce a novel compression method for geological facies modeling.
  • Enable independent control over facies proportion and connectivity.
  • Improve the fidelity of geological models for natural systems.

Main Methods:

  • Developed a two-step compression method.
  • First step: generate correct connectivity using conventional methods.
  • Second step: apply a geometrical transform to achieve correct facies proportions while preserving connectivity.

Main Results:

  • The compression method successfully decouples facies proportion and connectivity.
  • Generated models with independently defined and accurate proportions and connectivity.
  • Demonstrated the method's applicability to both low and high connectivity geological systems.

Conclusions:

  • The compression method offers enhanced control over geological model outputs.
  • This approach improves the representation of natural systems with varying connectivity.
  • Facilitates more realistic geological simulations and reservoir characterization.