Blar i NTNU Open på forfatter "Asaka, Michinori"

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    • A case study on time-dependent bedding plane failure 

      Asaka, Michinori; Holt, Rune Martin (Journal article; Peer reviewed, 2023)
      Time-delayed wellbore failures are often observed in shale formation. In some cases, cavings indicating bedding plane failure are observed a few days after initial drill-out with a gradual increase, eventually leading to ...

    • Practical applications of elastic anisotropy in rock physics, rock mechanics, and seismic subsurface characterization 

      Asaka, Michinori (Doctoral theses at NTNU;2022:145, Doctoral thesis, 2022)
      Elastic response of rocks often depends on the rock’s orientation, i.e., most rocks are anisotropic. In particular, shales, which are the overburden rock in most of conventional oil and gas fields, often show strong elastic ...

    • Rock physics model of shale: Predictive aspect 

      Asaka, Michinori; Holt, Rune Martin; Bakk, Audun (Peer reviewed; Journal article, 2021)
      Shales often show strong elastic anisotropy that originate from the alignment and platy nature of its constituent minerals. Despite its impact on AVO (Amplitude Variation with Offset) response and seismic time-shifts, ...