公开(公告)号：US20170115423A1

公开(公告)日：2017-04-27

申请号：US15334286

申请日：2016-10-26

Applicant: Schlumberger Technology Corporation

Inventor： Hiroshi Hori ,  Yoshino Matsumoto ,  Kojiro Nishimiya ,  Kiyomitsu Hikida ,  Jean-Christophe Auchere

IPC: G01V1/50 ,  G01V1/30

CPC classification number: G01V1/50

Abstract: A downhole tool for real-time caliper measurements is provided. The downhole tool comprises multiple acoustic transducers mounted at different positions of the tool, and a control system. The control system drives the multiple transducers, receives pressure echo signals from the transducers, records the pressure echo signals in the memory, extracts data of two-way transit time and echo amplitude from the echo signals, and computes at least one of a borehole diameter, a tool center position, and an acoustic slowness or velocity of downhole fluid, based on the data of transit time and echo amplitude.

公开(公告)号：US20160123130A1

公开(公告)日：2016-05-05

申请号：US14927381

申请日：2015-10-29

Applicant: Schlumberger Technology Corporation

Inventor： Abderrhamane Ounadjela ,  Henri-Pierre Valero ,  Jean-Christophe Auchere ,  Olivier Moyal

IPC: E21B47/00 ,  G01V3/20 ,  E21B47/01

CPC classification number: G01V3/20 ,  G01V3/18 ,  G01V3/30

Abstract: A borehole tool used in a borehole comprises a tool body, a plurality of arms connected to the tool body so as to be movable radially relative thereto between a closed position and an open position, and a plurality of pads with a totally rounded outer shape. Each of the pads is mounted on each movable portion of the arms so as to be rotatable about a radial axis relative to the tool body according to the arm movement between the closed position and the open position.

Abstract translation: 在钻孔中使用的钻孔工具包括工具主体，连接到工具主体的多个臂，以在关闭位置和打开位置之间相对于其径向移动，以及具有完全圆形外形的多个焊盘。 每个垫被安装在臂的每个可移动部分上，以便根据在关闭位置和打开位置之间的臂运动相对于工具主体绕径向轴线旋转。

公开(公告)号：US20130126171A1

公开(公告)日：2013-05-23

申请号：US13682697

申请日：2012-11-20

Applicant: Schlumberger Technology Corporation

Inventor： Florence Garnier ,  Jean-Christophe Auchere ,  Alain Guelat

IPC: E21B43/24

CPC classification number: E21B47/011 ,  E21B36/001

Abstract: A downhole assembly may include a housing having an outer surface and an inner surface, the outer surface adapted for contact with a downhole fluid, the inner surface defining an interior volume. One or more heat producing components may be disposed within the interior volume and in thermal contact with a structural component (e.g., chassis). One or more thermal dissipation members may be disposed within the housing, the one or more thermal dissipation members in thermal contact with the chassis and in thermal contact with the inner surface of the housing.

Abstract translation: 井下组件可以包括具有外表面和内表面的壳体，外表面适于与井下流体接触，内表面限定内部体积。 一个或多个发热部件可以设置在内部容积内并与结构部件（例如底盘）热接触。 一个或多个散热构件可以设置在壳体内，一个或多个散热构件与底座热接触并与壳体的内表面热接触。