ERL Industry Consortia Technical Reports: Recent submissions

Now showing items 64-66 of 456

    • A fast butterfly algorithm for the hyperbolic Radon transform 

      Hu, Jingwei; Fomel, Sergey; Demanet, Laurent; Ying, Lexing (Massachusetts Institute of Technology. Earth Resources Laboratory, 2012)
      We introduce a fast butterfly algorithm for the hyperbolic Radon transform commonly used in seismic data processing. For two-dimensional data, the algorithm runs in complexity O(N[superscript 2] logN), where N is representative ...

    • Surface-wave eikonal tomography for dense geophysical arrays 

      Gouedard, Pierre; Yao, Huajian; Ernst, Fabian; van der Hilst, Robert D. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2012)
      Surface-wave tomography often involves the construction of phase (or group) velocity maps through linearized inversion of measured phase (group) arrival times. Such inversions require a priori information about the medium ...

    • An approach for predicting stress-induced anisotropy around a borehole 

      Fang, Xinding; Fehler, Michael; Zhu, Zhenya; Chen, Tianrun; Brown, Stephen; e.a. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2012)
      Formation elastic properties near a borehole may be altered from their original state due to the stress concentration around the borehole. This could result in a biased estimation of formation properties but could provide ...