Now showing items 241-243 of 456

    • Estimating A Shear Modulus Of A Transversely Isotropic Formation 

      Ellefsen, K. J.; Cheng, C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)
      A method to estimate c[subscript 66], which is a shear modulus of a transversely isotropic formation (with its symmetry axis parallel to the borehole), is developed and tested. The inversion for c[subscript 66] is based ...
    • Report Summary 

      Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)
      This report contains the results of work completed during the eighth year of the Full Waveform Acoustic Logging Consortium in the Earth Resources Laboratory at M.I.T. During the past year, we were able to accomplish many ...
    • Velocity Anisotropy Of Two Deep Crystalline Samples 

      Mendelson, Jim; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)
      Using ultrasonic velocity measurements taken over a multiplicity of directions we show that samples exhibit weak to moderate anisotropy of seismic velocities. We further define the anisotropic geometry with high resolution ...