Abstract

Needle penetration index (NPI) testing technique has been used for inferring the uniaxial compressive strength (UCS) of soft rocks particularly tunnelling through squeezing rocks in Japan. The authors have been using this device to infer the physico-mechanical properties of soft rocks for some time. In this study, the authors describe the characteristics of experimental results carried out on tuff samples from various parts of Cappadocia Region and Phrygian Valley in Turkey. The physico-mechanical properties have been estimated in terms of needle penetration index (NPI) and compared with experimental results on tuffs from Cappadocia and Phrygian Valley. Their implications are discussed in similar rock mass conditions with some considerations of archeological remains.

Keywords:
cappadocia region, geologist, asia government, turkey government, structural geology, wellbore integrity, upstream oil & gas, wellbore design, reservoir characterization, aydan
Subjects:
Wellbore Design, Reservoir Characterization, Wellbore integrity, Exploration, development, structural geology, Reservoir geomechanics
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