Forward & inverse geophysics modules

  • 2D profile modelling of gravity and magnetics and synthetic seismographs
  • 3D forward modelling of gravity, magnetics (including remanence), full tensor gradiometry (FTG)
  • 3D forward computation of temperature, vertical heat flow & geothermal gradient
  • 3D litho-constrained stochastic geophysical inversion of gravity and magnetics (separately or jointly)
  • Driven by comprehensive GUIs & wizards
  • Handles variable rock properties through look-up tables (probablity distribution functions) or custom voxets
  • Browses to reference geophysical grids
  • Comprehensive post-inversion products including quantified uncertainty of geology-geometry & rock properties

The inversion method is non-deterministic. Inversion continues beyond a satisfactorily low misfit level (referencing observed geophysics at set precisions) – exploring & keeping a range of allowable models, and presenting distilled statistics of these, in terms of probabilities of geology-geometries and rock properties.

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Inversion Workflow (Petrel)

  • Well Calibration QC (Multi-well for training & validation)
  • Well Log data QC and pre-processing
  • Generate the Acoustic Impedance cube
  • Check output
  • Refine parameters
  • Use cross-validation data
  • It is possible to generate another property cube
  • (density, porosity)