ERL Industry Consortia Technical Reports: Recent submissions

Now showing items 319-321 of 456

    • Experimental Studies of Multipole Acoustic Logging with Scaled Borehole Models 

      Zhu, Zhenya; Rao, Rama V. N.; Burns, Daniel R.; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2004)
      A scaled multipole acoustic tool is built for laboratory measurements at ultrasonic frequencies in borehole models. The source with four separate transducers generate monopole, dipole, and quadrupole waves by different ...

    • 3-D Finite Di erence Modeling for Borehole and Reservoir Applications 

      Krasovec, Mary L.; Burns, Daniel R.; Willis, Mark E.; Malcolm, Shihong; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2004)
      ERL's in-house nite difference code (Krasovec et al., 2003) has undergone several upgrades in the past year. Most notably, a stretched grid can now be used to greatly reduce the amount of RAM memory needed by certain types ...

    • Finite-Difference Simulations of Time Reversed Acoustics in a Layered Earth Model 

      Lu, Rongrong; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2007)
      Traditionally an earthquake is located by using the arrival times of P and S phases. This uses only a limited portion of the information on a seismogram. A large part of the information carried by the waveform is not used. ...