ERL Industry Consortia Technical Reports: Recent submissions

Now showing items 256-258 of 456

    • Guided Waves In Slight, Azimuthally Anisotropic Formations 

      Ellefsen, K. J.; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)
      A method of calculating dispersion curves for guided waves in slight, azimuthally anisotropic formations is developed with perturbation theory. The fluid is assumed to be inviscid, the formation perfectly elastic and ...

    • Applications Of Perturbation Theory To Acoustic Logging 

      Ellefsen, K. J.; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)
      For guided wave propagation in boreholes, perturbation theory is used to calculate (1) the partial derivative of the wavenumber or frequency with respect to an elastic modulus or density, (2) group velocity, and (3) the ...

    • Report Summary 

      Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)
      This report contains the results of work completed during the seventh year of the Full Waveform Acoustic Logging Consortium in the Earth Resources Laboratory at M.LT. During the past year, we have been concentrating on ...