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Automatic tracking of faults by slope decomposition

  • US 10,393,899 B2
  • Filed: 09/15/2014
  • Issued: 08/27/2019
  • Est. Priority Date: 10/31/2013
  • Status: Active Grant
First Claim
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1. A computer-implemented method for automatically tracking faults in a 2-D imaged seismic cross-section or a 3D imaged seismic data volume, comprising:

  • (a) decomposing, with a computer, the imaged seismic data into slopes, wherein the imaged seismic data has previously undergone depth migration; and

    (b) forming, with a computer, a fault-highlighted data volume or cross-section from voxels corresponding to fault discontinuities in the imaged seismic data having slopes that span a broader range of slopes than other voxels in the imaged seismic data;

    (c) selecting, with a computer, one or more initial seeds for fault surfaces or fault lines within the fault-highlighted data volume or cross-section;

    (d) generating, with a computer, one or more fault contours in the fault-highlighted data volume or cross-section starting from the initial seeds;

    (e) displaying, with a computer, a connected, smooth fault surface or line based on the one or more fault contours and(f) exploring for hydrocarbons based at least in part upon the generated fault contours and/or the displayed smooth fault surface or line.

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