Correlation of rock properties with a bearing on workability

Abstract

A  search  is  tried  for  workability  indexes  of  rocks  represented  by  physical  properties which  can  be  correlated  with  petrographic  composition  and   with   other   physical   properties   which have a bearing on the technological processes under scope. The results enable to correlate Vickers microhardness with the industrial rate of bit penetration in drilling operations.  From this same point of view reflectivity measurements are examined; they are easily correlated with microhardness once rock type is dully taken into account.