Fast automatic detection of geological boundaries from multivariate log data using recurrence

Ayham Zaitouny, Michael Small, June Hill, Irina Emelyanova, M. Ben Clennell

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Manual interpretation of data collected from drill holes for mineral or oil and gas exploration is time-consuming and subjective. Identification of geological boundaries and distinctive rock physical property domains is the first step of interpretation. We introduce a multivariate technique, that can identify geological boundaries from petrophysical or geochemical data. The method is based on time-series techniques that have been adapted to be applicable for detecting transitions in geological spatial data. This method allows for the use of multiple variables in detecting different lithological layers. Additionally, it reconstructs the phase space of a single drill-hole or well to be applicable for further investigations across other holes or wells. The computationally cheap method shows efficiency and accuracy in detecting boundaries between lithological layers, which we demonstrate using examples from mineral exploration boreholes and an offshore gas exploration well.

Original languageEnglish
Article number104362
JournalComputers and Geosciences
Publication statusPublished - Feb 2020
Externally publishedYes


  • Boundary detection
  • Drill holes
  • Multivariate
  • Quadrant scan
  • Recurrence plot
  • Well logs

ASJC Scopus subject areas

  • Information Systems
  • Computers in Earth Sciences


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