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Method of characterizing texture heterogeneities of geological formations traversed by a borehole

  • US 5,809,163 A
  • Filed: 02/16/1995
  • Issued: 09/15/1998
  • Est. Priority Date: 02/26/1991
  • Status: Expired due to Term
First Claim
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1. A method of characterizing texture heterogeneities of a structure in a geological formation traversed by a borehole, represented by an image of a circumferential segment of a borehole wall having variations in a physical parameter of the formation in the longitudinal direction of the borehole and around a periphery of a wall of the borehole, comprising the steps of:

  • a) obtaining signals representative of a two-dimensional reconstructed image of an in-situ section of an earth formationb) automatically processing the signals to extract from the image, by means of mathematical morphological operators, a further reconstructed image in which geological objects correspond to a determined morphological type of heterogeneity, defined as an enclosed zone having high value for said parameter, wherein said objects are present in such a way that said objects are capable of being automatically extracted from the further image thus produced to indicate a discontinuity within said structure corresponding to said enclosed zone; and

    c) determining the variation in the longitudinal direction of the borehole of at least one attribute defined for the morphological type of heterogeneity.

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