Patents by Inventor Hiroshi Akima

Hiroshi Akima 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: 11181656
    Abstract: A system may obtain orthogonal pairs of acoustic waveforms obtained by a rotating downhole acoustic tool. The downhole tool may include an acoustic transmitter and an acoustic receiver. A computing device communicatively coupled to the downhole tool that instructs the transmitter to generate the various waveforms detected by the acoustic receiver and store the various waveforms in a buffer. Each waveform of a subset of the various waveforms oriented in a similar direction may be stacked to generate a composite waveform with reduced noise. The computing system may determine an orthogonal pair of waveforms based on the composite waveform and remaining waveforms.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: November 23, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Denis Syresin, Hiroshi Akima, Takashi Katagiri, Atsushi Oshima
  • Publication number: 20190179048
    Abstract: A system may obtain orthogonal pairs of acoustic waveforms obtained by a rotating downhole acoustic tool. The downhole tool may include an acoustic transmitter and an acoustic receiver. A computing device communicatively coupled to the downhole tool that instructs the transmitter to generate the various waveforms detected by the acoustic receiver and store the various waveforms in a buffer. Each waveform of a subset of the various waveforms oriented in a similar direction may be stacked to generate a composite waveform with reduced noise. The computing system may determine an orthogonal pair of waveforms based on the composite waveform and remaining waveforms.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 13, 2019
    Inventors: Denis Syresin, Hiroshi Akima, Takashi Katagiri, Atsushi Oshima