permeability targeting through geomechanics and...

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Permeability targeting through geomechanics and advanced seismic interpretation Hani Abul Khair Martin Hand Dennis Cooke

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  • Permeability targeting through geomechanics and advanced

    seismic interpretation

    Hani Abul Khair

    Martin Hand

    Dennis Cooke

  • Cooper Basin geomechanical drawbacks

    High differential stress Reverse stress regime at large depths

  • Solutions for South Australia

  • 1- Locate highly fractured areas

    Image logs Using advanced seismic attributes for fracture

    modelling

    Fracture prediction using current day stress and paleo-stress (stress inversion).

  • 2- Model stress variation

    3D stress modelling Geomechanical fault and fracture susceptibility

    modelling

    Stress tensor from regional mapping and calcite twinning

  • 3- Locate brittle areas

    Comparing petrography and seismic attributes Permian sand net-gross, does it control H? Stress and fractures from seismic inversion

  • 4- Model interaction between stress and fractures during hydraulic fracturing

    Modelling fracture growth and height Frac flow back optimization

  • Using advanced seismic attributes for fracture modelling

  • 3D stress modelling

    Stress measured in frac jobs

    dept

    h

    Lower modelled stress (blue) is on low side of measured stress

  • Predicting fractures using stress inversion

  • Geomechanical fault and fracture susceptibility modelling

  • Modelling fracture growth in Abaqus

  • Comparing petrography and seismic attributes

  • Permian sand net-gross, does it control H?

    Patchawarra SS channels

    Well Gidgealpa Fault Big Lake Fault

    Tirrawarra SS

    Does the massive Tirrawarra Sandstone bear a higher stress load than the low net-to-gross Patchawarra sands above it? Does this cause tip screen out?

  • Frac flow back optimization

    Will high pressure fluids left in place after a frac job damage the formation? If so how might that damage be mitigated?

    Permeability and fluid invasion profile

  • Stress and natural fractures from seismic at Barrolka 3D

    Different seismic methods to be compared to well control:

    1. Azimuthal AVO

    2. HTI migration velocity analysis

  • Interpreting Cooper paleo-stress tensor with seismic structure and calcite twinning

  • Future projects

    Seismic diffracted waves for faults and fracture mapping

    Modelling seismic acquisition and processing for detecting faults and fractures in the subsurface

    Modelling seismic acquisition and processing parameters to detect deeply seated faults in the Cooper Basin

  • Acknowledgments