Now showing items 265-267 of 456

    • Fracture Detection And Characterization 

      Toksoz, M. Nafi; Guler, Fatih (Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
      The effects of fractures on full waveform acoustic logs are studied on the basis of field observations, available theoretical models, and a series of ultrasonic laboratory experiments. Results from diffusion models ...
    • A Dynamic Model For Fluid Flow In A Borehole Fracture 

      Tang, X. M.; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
      The attenuation of Stoneley waves by a borehole fracture are closely related to fluid flow in the fracture. We consider the dynamic response of a viscous fluid in a horizontal fracture to the oscillating pressure excitation ...
    • Acoustic Logging Guided Waves In Transversely Isotropic Formations 

      Ellefsen, K. J.; Cheng, C. H.; Schmitt, D. P. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
      We have studied the velocity dispersion of guided waves in transversely isotropic formations. Theoretical velocity dispersion curves were calculated with elastic constants based on laboratory and field measurements and ...