公开(公告)号：US10739413B2

公开(公告)日：2020-08-11

申请号：US15161651

申请日：2016-05-23

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： François Chevillard ,  Fabio Cecconi

IPC: H04B3/46 ,  E21B19/08 ,  E21B19/22 ,  E21B47/00 ,  E21B47/12 ,  G01R31/02 ,  G01R31/08 ,  G01R31/58 ,  G01R31/59

Abstract: The disclosure relates to a method for monitoring the performances of a cable for carrying a downhole assembly in a wellbore, the cable having at least a conductive core and an insulating outer layer, the method including: performing on the cable a detection operation for detecting the presence of local anomalies of the cable; generating an electrical model of a predetermined configuration of an installation including the cable and the downhole assembly disposed in the wellbore, the model being defined in function of the detected local anomalies, estimating a parameter relative to a signal transmitted by the cable between the downhole assembly and a surface equipment in the predetermined configuration on the basis of the electrical model.

公开(公告)号：US20160349302A1

公开(公告)日：2016-12-01

申请号：US15161651

申请日：2016-05-23

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： François Chevillard ,  Fabio Cecconi ,  Florent Canolle ,  Christophe Michaud ,  Maxime Bouffe

IPC: G01R31/02 ,  G01R31/08 ,  E21B47/00

Abstract: The disclosure relates to a method for monitoring the performances of a cable for carrying a downhole assembly in a wellbore, the cable having at least a conductive core and an insulating outer layer, the method including: performing on the cable a detection operation for detecting the presence of local anomalies of the cable; generating an electrical model of a predetermined configuration of an installation including the cable and the downhole assembly disposed in the wellbore, the model being defined in function of the detected local anomalies, estimating a parameter relative to a signal transmitted by the cable between the downhole assembly and a surface equipment in the predetermined configuration on the basis of the electrical model.

Abstract translation: 本发明涉及一种用于监测用于在井眼中承载井下组件的电缆的性能的方法，所述电缆具有至少导电芯和绝缘外层，所述方法包括： - 在所述电缆上执行检测操作以进行检测 电缆存在局部异常现象; - 产生包括设置在井眼中的电缆和井下组件的设备的预定配置的电气模型，所述模型根据检测到的局部异常而被定义， - 估计相对于电缆在 井下组件和基于电气模型的预定配置中的地面设备。

公开(公告)号：US10738589B2

公开(公告)日：2020-08-11

申请号：US16152515

申请日：2018-10-05

Applicant: Schlumberger Technology Corporation

Inventor： Vincent Chatelet ,  Jean-Louis Pessin ,  François Chevillard

IPC: E21B47/00 ,  G01R31/08 ,  E21B17/00 ,  E21B33/08 ,  E21B47/12 ,  E21B23/14 ,  E21B19/00

Abstract: The disclosure relates to a method for monitoring the performances of a cable for carrying a downhole assembly in a wellbore, the cable comprising at least a conductive core and an insulating outer layer, comprising: measuring a downlink telemetry signal, transmitted from a surface control module to the downhole assembly, and/or an uplink telemetry signal, transmitted from the downhole assembly to the surface control module; representing the downlink and/or uplink telemetry signals as a function of a parameter representative of a depth of the downhole assembly, analyzing a variation of the telemetry signal as a function of the parameter in view of an electrical model of an installation including the cable and the downhole assembly disposed in the wellbore, determining location of anomalies of the cable based on the analysis.

公开(公告)号：US20190032469A1

公开(公告)日：2019-01-31

申请号：US16152515

申请日：2018-10-05

Applicant: Schlumberger Technology Corporation

Inventor： Vincent Chatelet ,  Jean-Louis Pessin ,  François Chevillard

IPC: E21B47/00 ,  E21B17/00 ,  G01R31/08

Abstract: The disclosure relates to a method for monitoring the performances of a cable for carrying a downhole assembly in a wellbore, the cable comprising at least a conductive core and an insulating outer layer, comprising: measuring a downlink telemetry signal, transmitted from a surface control module to the downhole assembly, and/or an uplink telemetry signal, transmitted from the downhole assembly to the surface control module; representing the downlink and/or uplink telemetry signals as a function of a parameter representative of a depth of the downhole assembly, analyzing a variation of the telemetry signal as a function of the parameter in view of an electrical model of an installation including the cable and the downhole assembly disposed in the wellbore, determining location of anomalies of the cable based on the analysis.