ERL Industry Consortia Technical Reports: Recent submissions

Now showing items 316-318 of 456

    • A comparison of LWD and wireline dipole sonic data 

      Briggs, Victoria; Rao, Rama V. N.; Grandi, Samantha K.; Burns, Daniel R.; Chi, Shihong (Massachusetts Institute of Technology. Earth Resources Laboratory, 2004)
      Data measured by both wireline and LWD tools in the same borehole are compared. Discrepancies in shear velocities as calculated from the data are on average around 5% and discrepancies between compressional velocities are ...

    • Effects of source mismatch on multipole Logging 

      Byun, Joongmoo; Toksoz, M. Nafi; Rao, Rama V. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2004)
      The effects of mismatched multipole sources were investigated. Multipole sources considered here are those that they are constructed of monopoles with appropriate sign combination. To simulate mismatched dipole and ...

    • Effects of tool eccentricity on wave dispersion properties in borehole acoustic logging while drilling 

      Zheng, Yibing; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2004)
      In this paper, a finite element approach is applied to study the dispersion properties of non-leaky acoustic waves inside boreholes with off-centered LWD (logging while drilling) tools. Both soft and hard formation cases ...