Browsing Earth Resources Laboratory by Author "Tezuka, Kazuhiko"

Now showing items 1-2 of 2

    • Nonlinear Semblance Processing For The Evaluation Of An Acoustic Altered Zone Around The Borehole 

      Tezuka, Kazuhiko (Massachusetts Institute of Technology. Earth Resources Laboratory, 1994)
      This paper describes a simple method to evaluate an acoustic altered zone around the borehole using an array of sonic waveforms. The method is based on a semblance velocity analysis and a nonlinear travel time window is ...

    • Untitled 

      Tezuka, Kazuhiko; Cheng, C. H.; Tang, X. M. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1994)
      This paper describes a propagator matrix formulation for the problem of the Stoneley wave propagation in an irregular borehole. This is based on a simple one-dimensional theory that is possible for the low frequency ...