Complementary Entropy and Wavelet Analysis of Drilling-Ability Data

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

The paper combines wavelet and entropy analysis of nonstationary drilling- ability data in order to obtain optimum information on the mechanical behavior of different geological formations. Both methods are multiscale in nature, and while entropy analysis provides information on stationary subdomains, wavelet analysis identifies dominant scales or range of scales at which the entropy analysis is most useful. The combination of the techniques yields relatively simple results that can aid the drilling process by providing information on delays to be expected.

Original languageEnglish (US)
Pages (from-to)89-103
Number of pages15
JournalMathematical Geology
Volume35
Issue number1
DOIs
StatePublished - Jan 1 2003

Keywords

  • Multiscale
  • Nonstationary
  • Spatial series
  • Tunnelling

ASJC Scopus subject areas

  • Mathematics (miscellaneous)
  • Earth and Planetary Sciences (miscellaneous)

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