Patents by Inventor Hadrien Dollfus

Hadrien Dollfus 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).

  • Sand monitoring and control system
    Patent number: 12680431
    Abstract: A method can include receiving real-time downhole time series sensor data during production of fluid from a well in fluid communication with a formation reservoir; transforming the real-time downhole time series sensor data to values for a set of predefined model features; detecting a downhole sand event using the values as input to a trained neural network model; and issuing a signal responsive to detection of the downhole sand event.
    Type: Grant
    Filed: July 28, 2023
    Date of Patent: July 14, 2026
    Assignees: Schlumberger Technology Corporation, Japan Organization for Metals and Energy Security
    Inventors: Weijia Du, Takayuki Kanno, Hadrien Dollfus, Myriam Amour, Shungo Abe
  • SAND MONITORING AND CONTROL SYSTEM
    Publication number: 20250034973
    Abstract: A method can include receiving real-time downhole time series sensor data during production of fluid from a well in fluid communication with a formation reservoir; transforming the real-time downhole time series sensor data to values for a set of predefined model features; detecting a downhole sand event using the values as input to a trained neural network model; and issuing a signal responsive to detection of the downhole sand event.
    Type: Application
    Filed: July 28, 2023
    Publication date: January 30, 2025
    Inventors: Weijia Du, Takayuki Kanno, Hadrien Dollfus, Myriam Amour, Shungo Abe
  • Borehole size determination downhole
    Patent number: 10838097
    Abstract: Methods and apparatus pertaining to determining shape and size of a borehole at a depth within a subterranean formation using ultrasonic measurements obtained by a downhole tool at four different azimuthal locations corresponding to four mutually orthogonal directions extending radially from a central axis of the downhole tool. The measurements are indicative of a distance between a wall of the borehole and the downhole tool at each azimuthal location. The borehole shape and size are determined by estimating an ellipse approximating the borehole shape and size using the ultrasonic measurements.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: November 17, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Hadrien Dollfus, Henri-Pierre Valero, Jean-Christophe Auchere
  • Borehole Size Determination Downhole
    Publication number: 20190339411
    Abstract: Methods and apparatus pertaining to determining shape and size of a borehole at a depth within a subterranean formation using ultrasonic measurements obtained by a downhole tool at four different azimuthal locations corresponding to four mutually orthogonal directions extending radially from a central axis of the downhole tool. The measurements are indicative of a distance between a wall of the borehole and the downhole tool at each azimuthal location. The borehole shape and size are determined by estimating an ellipse approximating the borehole shape and size using the ultrasonic measurements.
    Type: Application
    Filed: May 4, 2018
    Publication date: November 7, 2019
    Inventors: Hadrien Dollfus, Henri-Pierre Valero, Jean-Christophe Auchere