ERL Industry Consortia Technical Reports: Recent submissions

Now showing items 238-240 of 456

    • Acoustic Wave Propagation In A Fluid-Filled Borehole With A Horizontal Fracture 

      Tang, X. M.; Cheng, C. H.; Toksaz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)
      The propagation of guided waves in a fluid-filled borehole with an open horizontal fracture is investigated both theoretically and experimentally. The fracture is modeled as a fluid layer that separates the domain of ...

    • Dynamic Permeability And Borehole Stoneley Waves: A Simplified Biot-Rosenbaum Model 

      Tang, X. M.; Cheng, C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)
      Stoneley waves in permeable boreholes are diagnostic of formation permeability because their propagation is affected by the dynamic fluid flow at the borehole wall. We characterize this flow using the concept of dynamic ...

    • Effects Of Anisotropy Upon The Normal Modes 

      Ellefsen, K. J.; Cheng, C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)
      The effects of anisotropy upon elastic wave propagation along a fluid-filled cylindrical borehole are determined. The wave equation is solved in the frequency-wavenumber domain with a variational method, and the solution ...