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Fault Extraction

Pick less, interpret more.

Emerson E&P Software offers a choice of semi-automatic and automatic tools for fault tracking and fault extraction.

The semi-automatic, user-driven FaultTrak™ tool facilitates interpretation of surveys containing complex faulting with minimal manual effort. FaultTrak can be used as part of the interactive fault picking process, or the user can choose to run it as a batch operation.

Emerson's Automatic Fault Extraction (AFE), under license from Terraspark Geosciences, both automates and enhances the process of identifying, extracting and modeling geologic discontinuities such as faults, from subsurface seismic volumes. These surfaces can also be used to help constrain and improve the performance of auto-tracking and segmentation algorithms, minimizing problems with miscorrelation across faults in the data.

Fault extraction benefits

  • Reduced cycle time for fault surface interpretation
  • Consistent and accurate interpretation of 3D fault surfaces
  • Improved horizon autotracking, making use of interpreted fault surfaces as constraints
  • User has full parameter control at every step of the process.
  • Fast extraction of hundreds of faults allows interpreters to concentrate on geological history rather than on the tedious picking process.
  • Rose diagram analyses and faults selected and displayed relative to calibrated structural horizons enable interpreters to quickly decipher complicated structural history.
  • Faults split into separate extracted faults are usually split because of a geologic change, prompting the geoscientist to evaluate the reason for the break rather than forcing manual picks from line to line.
  • Faults are named according to their strike and dip, allowing the interpreter to easily select, manipulate, display and analyze structural orientations.

Fault extraction features

  • Enhanced discontinuity attribute volumes are available for both the automated extraction process and for assisting manual structural interpretation.
  • Rose diagrams allow independent statistical analysis of automatically extracted lineaments, for the study of fractured plays.  A new seismic attribute volume of the extracted lineaments is also available for further study.
  • Automatic clustering of constituent faults into a single surface is accomplished with the Planar Clustering feature (licensed separately), which allows the user to select which faults may potentially be clustered together.  The process reduces the total number of fault “pieces” for individual, geologically significant faults.
  • Faults may be directly exported to the Eposdatabase for interpretation and mapping using standard Epos interpretation tools, or they may be refined further using onboard utilities.
  • Offered as an add-on module to SeisEarth™ .  A multi-CPU version is available for shared memory platforms.