ERL Industry Consortia Technical Reports: Recent submissions

Now showing items 235-237 of 456

    • Permeability Estimation From Velocity Anisotropy In Fractured Rock 

      Gibson, Richard L., Jr.; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)
      Cracks in a rock mass subjected to a uniaxial stress will be preferentially closed depending on the angle between the fracture normal vectors and the direction of the applied stress. If the prestress fracture orientation ...

    • Inversion For Permeability From Stoneley Wave Velocity And Attenuation 

      Cheng, N. Y.; Cheng, C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)
      The in situ permeability of a formation is obtained by the inversion of Stoneley wave phase velocity and attenuation, which are evaluated by applying the Extended Prony's method to the array sonic logging data. The Maximum ...

    • Finite Difference Modelling Of Acoustic Logs In Vertically Heterogeneous Biot Solids 

      Stephen, Ralph A.; Cheng, N. Y.; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1987)
      This paper discusses the results of tests carried out on a finite difference formulation of Biot's equations for wave propagation in saturated porous media which vary in range and depth (Stephen, 1987). A technique for ...