公开(公告)号：US20180284313A1

公开(公告)日：2018-10-04

申请号：US15764793

申请日：2016-09-26

Applicant: Schlumberger Technology Corporation

Inventor： Bo Hu ,  Mark Flaum ,  Jane Troutner

IPC: G01V3/32 ,  E21B47/12 ,  G06F17/15 ,  G06K9/62

Abstract: A method and system for detecting an anomaly in measurement data captured by a downhole tool is disclosed provided. In the method and system, measurement data comprising a plurality of measurement channels is obtained and reference data including healthy reference data and faulty reference data is also obtained. The measurement data is preprocessed by modeling at least one measurement channel of the plurality of measurement channels using modeling parameters to produce pre-processed measurement data. Further, a first distance between the pre-processed measurement data and the healthy reference data is obtained and determined to exceed a first threshold for the first distance. A report is generated in response to determining that the first distance exceeds the first threshold. The report indicates detection of the anomaly in the measurement data

公开(公告)号：US11501901B2

公开(公告)日：2022-11-15

申请号：US16339862

申请日：2017-10-05

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Yiqiao Tang ,  Irfan Bulu ,  Yi-Qiao Song ,  Mark Flaum ,  Tancredi Botto ,  Shin Utsuzawa

IPC: H01F7/02

Abstract: Magnet design is provided. A method customizes a magnetic field uniformity of a magnet by introducing one or more gaps between pieces of the magnet assembly.

公开(公告)号：US20200301039A1

公开(公告)日：2020-09-24

申请号：US16825736

申请日：2020-03-20

Applicant: Schlumberger Technology Corporation

Inventor： Yiqiao Tang ,  Yi-Qiao Song ,  Martin Hurlimann ,  Christopher Harrison ,  Marcus Hofheins Donaldson ,  Mark Flaum

IPC: G01V3/14 ,  G01N24/08 ,  G01R33/30

Abstract: Small-sized flowlines are provided for use in NMR apparatus. The small-sized flowlines can have a channel with an inner diameter or maximum width of less than 0.2 inch and can be made of sapphire, yttria-stabilized zirconia (YSZ), or extruded polyether ether ketone (PEEK), which are useful in high temperature, high pressure environments such as downhole in a geological formation.

公开(公告)号：US11105948B2

公开(公告)日：2021-08-31

申请号：US15764793

申请日：2016-09-26

Applicant: Schlumberger Technology Corporation

Inventor： Bo Hu ,  Mark Flaum ,  Jane Troutner

IPC: G01V3/32 ,  E21B47/12 ,  G06F17/15 ,  G01N24/08 ,  G06K9/62

Abstract: A method and system for detecting an anomaly in measurement data captured by a downhole tool is disclosed provided. In the method and system, measurement data comprising a plurality of measurement channels is obtained and reference data including healthy reference data and faulty reference data is also obtained. The measurement data is preprocessed by modeling at least one measurement channel of the plurality of measurement channels using modeling parameters to produce pre-processed measurement data. Further, a first distance between the pre-processed measurement data and the healthy reference data is obtained and determined to exceed a first threshold for the first distance. A report is generated in response to determining that the first distance exceeds the first threshold. The report indicates detection of the anomaly in the measurement data.

公开(公告)号：US20190244737A1

公开(公告)日：2019-08-08

申请号：US16339862

申请日：2017-10-05

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Yiqiao Tang ,  Irfan Bulu ,  Yi-Qiao Song ,  Mark Flaum ,  Tancredi Botto ,  Shin Utsuzawa

IPC: H01F7/02

CPC classification number: H01F7/021 ,  H01F7/0278

Abstract: Magnet design is provided. A method customizes a magnetic field uniformity of a magnet by introducing one or more gaps between pieces of the magnet assembly.