公开(公告)号：US20250034973A1

公开(公告)日：2025-01-30

申请号：US18361102

申请日：2023-07-28

Applicant: Schlumberger Technology Corporation ,  Japan Organization for Metals and Energy Security

Inventor： Weijia Du ,  Takayuki Kanno ,  Hadrien Dollfus ,  Myriam Amour ,  Shungo Abe

IPC: E21B43/12

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.

公开(公告)号：US20190339411A1

公开(公告)日：2019-11-07

申请号：US15970924

申请日：2018-05-04

Applicant: Schlumberger Technology Corporation

Inventor： Hadrien Dollfus ,  Henri-Pierre Valero ,  Jean-Christophe Auchere

IPC: G01V1/50

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.