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Pore Pressure Prediction

Pore pressure prediction involves using marine or land seismic data to produce a prediction of pore pressure attributes suitable for well engineering design. This includes well-specific velocity analysis and generation of pressure attribute curves that may make use of a shale compaction/diagenesis model.

The following are critical factors in pore pressure prediction in order of importance to the accuracy of final results:

  • Accuracy and resolution of sub-surface vertical velocity (Vp and Vs) prediction
  • Accuracy and resolution of sub-surface density prediction
  • Local well calibration
  • Appropriate model basis for relating vertical velocity to pore pressures

Advanced Pore Pressure Prediction Services

ION uses a high-resolution pore pressure prediction workflow to prepare an un-risked reconnaissance 3D pore pressure prediction followed by a complete risked well-specific pore pressure prediction for existing wells. Using Eaton Pore Pressure and Fracture Pressure methods, ION can now deliver:

  • Improved pre-stack gather preparation and conditioning (appropriate for pore pressure)
  • Higher resolution pre-stack inversion attributes (Vp, Vs, density) for prediction of pore pressure
  • Improved methodologies for extrapolating well log attributes to the sea bed or land surface (site and data specific)
  • New pre-drill risking methodology for predicted pore pressure attributes (inversion based) at proposed well locations
  • Additional real-time monitoring service that updates predictions ahead of the drill bit during well operations to improve safety, increase penetration rates, and reduce well cost