uniaxial compressive strength (ucs) and internal friction coefficient (µ) are the most important strength parameters of rock. they could be determined either by laboratory tests or from empirical correlations. the laboratory analysis sometimes is not possible for many reasons. on the other hand, due to changes in rock compositions and properties, none of the correlations could be applied as an ...

-Multivariate statistical analyses of geochemical, mineralogical, and cation-exchange capacity (CEC) data from a Venezuelan oil well were used to construct a model which relates elemental concentrations to mineral abundances. An r-mode factor analysis showed that most of the variance could be accounted for by four independent factors and that these factors were related to individual mineral com...

The thermal conductivity of a stratum is key factor to study the deep temperature distribution and structure basin. A huge expense core sampling from boreholes, especially in offshore areas, makes it expensive directly test samples. Therefore, use well logging (the gamma-ray, neutron porosity, temperature) estimate samples obtained boreholes could be good alternative. In this study, we measured...