Patents by Inventor Nobuyasu Hirabayasbi

Nobuyasu Hirabayasbi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8813869
    Abstract: Methods and related systems are described for measuring and analyzing refracted acoustic energy. A plurality of receivers mounted are on a downhole tool, and are arranged and adapted to receive refracted acoustic energy from a downhole formation. Measurements of refracted acoustic energy is analyzed such that information relating to an azimuthal direction relative to the downhole tool of an interface within the downhole formation can be estimated. The receivers can be mounted on a drill collar as part of a LWD tool and steering of the drilling trajectory can be based in part on the estimated formation information.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: August 26, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Nicholas Bennett, Jakob Brandt Utne Haldorsen, Hiroaki Yamamoto, Nobuyasu Hirabayasbi, Takeshi Endo, Richard Timothy Coates