Estimating rock strength from non-destructive strength testing (Equotip) and related benefits

W. H. Hujer*, Thomas Finkbeiner, M. Persaud

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The results indicate that a strong correlation exists between Equotip Leeb hardness and UCS derived from scratch-test data for different lithologies. Tests on full cores also fit into the correlation. Larger variations in data range were encountered in coarse-grained sandstones, sandstones characterized by high amounts of clay minerals and fines as well as in lithologies that exhibit high rock strengths. Further in-house research is planned to find individual correlations or other testing devices for those lithologies. The results show that the Equotip can be used for estimating UCS from lithologies where representative plugging is not possible. The method is fast and equipment costs and logistics are low. Scratch tests derived UCS can be used for calibration. Estimating UCS from hardness testing cannot replace triaxial, hollow cylinder or scratch tests but can complement those tests, especially if data is needed urgently or other testing is not possible.

Original languageEnglish (US)
Title of host publicationEAGE Workshop on Geomechanics in the Oil and Gas Industry
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Pages1-3
Number of pages3
ISBN (Print)9781632665416
StatePublished - Jan 1 2014
EventEAGE Workshop on Geomechanics in the Oil and Gas Industry - Dubai, United Arab Emirates
Duration: May 11 2014May 14 2014

Publication series

NameEAGE Workshop on Geomechanics in the Oil and Gas Industry

Other

OtherEAGE Workshop on Geomechanics in the Oil and Gas Industry
CountryUnited Arab Emirates
CityDubai
Period05/11/1405/14/14

ASJC Scopus subject areas

  • Geochemistry and Petrology

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