Earth Resources Laboratory: Recent submissions

Now showing items 289-291 of 456

    • Asymmetric Modes of Elastic Wave Propagation in a Fluid-Filled Borehole 

      Jinzhong, Zhang; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1985)
      A numerical investigation of asymmetric modes of elastic wave propagation in a fluid-filled borehole is treated in this paper. The dispersion curves of guided waves (called flexural waves) and synthetic microseismograms ...

    • Energy Partitioning and Attenuation of Guided Waves in a Radially Layered Borehole 

      Burns, D. R.; Cheng, C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1985)
      Recently published results (Tubman et al., 1984; Baker,. 1984) indicate that synthetic full waveform acoustic logs generated in cased or damaged boreholes differ significantly from those generated in an open hole with ...

    • A Numerical Investigation of Head Waves and Leaky Modes in Fluid-Filled Boreholes 

      Paillet, Frederick L.; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1985)
      Although synthetic borehole seismograms routinely can be computed for a wide range of borehole conditions, the physical nature of shear and compressional head waves in fluid-filled boreholes is poorly understood. This ...