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公开(公告)号：US11892345B2
公开(公告)日：2024-02-06
申请号：US17418459
申请日：2019-12-25
Applicant: NEUBREX CO., LTD.
Inventor： Feng Xie , Hongliang Cong , Guidong Li , Xiaohui Hu , Longhai Xu
IPC: G01H9/00 , G06N20/10 , G06F18/22 , G06F18/214 , G06F18/2135 , G06F18/2413 , G06F18/243 , G06N5/01
CPC classification number: G01H9/004 , G06F18/214 , G06F18/2135 , G06F18/22 , G06F18/24137 , G06F18/24323 , G06N5/01 , G06N20/10
Abstract: A method for detecting and specifying a vibration on the basis of a feature of a fiber-optic signal to determine a time and a spatial location of the present invention includes: Step 1 of acquiring a feature-expanded function vector and C-number of vibration categories by expanding a feature of initial data of a vibration signal from a distributed fiber-optic sensor; Step 2 of calculating a dimensionality reduction matrix based on the feature-expanded function vector; Step 3 of acquiring a dimensionality-reduced feature function by operating the dimensionality reduction matrix to the initial data and the feature-expanded function vector; Step 4 of acquiring a primary classification result of the vibration signal by performing a classification with reference to primary classification parameter acquired from a parameter database; and Step 5 of acquiring and outputting a secondary classification result of the vibration signal by performing removal of a wrong detection result and correction of a wrong classification result of the primary classification result.
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公开(公告)号：US20230332931A1
公开(公告)日：2023-10-19
申请号：US18044165
申请日：2020-10-15
Inventor： Kinzo KISHIDA , Yoshiaki YAMAUCHI , Junichi KAWABATA , Shoji SENO , Hideki NAGATANI , Michio IMAI , Yukihiro HAMADA , Kazumitu WATANABE
IPC: G01D5/353
CPC classification number: G01D5/353
Abstract: A distributed position detection rope includes: basic optical elements each including an optical fiber, tensile strength bodies, and a sheath material and the tensile strength bodies; a cylindrical inner sheath layer having a first optical element formed by arranging a plurality of the basic optical elements which are arranged at positions on the same circle and are helically wound at a predetermined pitch along the axial direction of the axis; and a cylindrical outer sheath layer on the outer side of the inner sheath layer and having a second optical element which are arranged at positions on the same circle and are helically wound along the axial direction so as to have a placement angle different from that of the basic optical elements of the first optical element.
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公开(公告)号：US20210388718A1
公开(公告)日：2021-12-16
申请号：US17066519
申请日：2020-10-09
Applicant: Neubrex Co., Ltd.
Inventor： Ge Jin , Kinzo Kishida
IPC: E21B49/00 , E21B47/007 , E21B47/06
Abstract: A method of determining borehole characteristics comprises arranging at least one sensing fiber along a borehole, causing pressure changes in the borehole, and measuring strain along the sensing fiber to obtain strain data. The strain data obtained thereby can be interpreted, for example, to determine borehole fracture geometry and to determine borehole perforation cluster efficiency. These results can be used to improve well completion and stimulation designs, increase field production, and/or decrease costs.
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公开(公告)号：US10712149B2
公开(公告)日：2020-07-14
申请号：US16307727
申请日：2016-06-08
Applicant: Neubrex Co., Ltd.
Inventor： Kinzo Kishida , Yoshiaki Yamauchi , Mitsunori Yokoyama
Abstract: A DPTSS fiber optic cable includes an optical fiber sheathing cylindrical metal tube accommodating a pressure sensor optical fiber and having a plurality of through holes formed therein; and pressure blocking sections formed at intervals in the axial direction of the cable.
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公开(公告)号：US09829352B2
公开(公告)日：2017-11-28
申请号：US14417962
申请日：2013-08-07
Inventor： Ziqiu Xue , Yoshiaki Yamauchi , Kinzo Kishida
CPC classification number: G01D5/353 , B01J19/00 , G01B11/16 , G01B11/18 , G01D5/35361 , G01K11/12 , G01K11/32 , G01K2011/322 , G01L1/242 , G01L19/00
Abstract: Distributions of a Brillouin frequency shift and a Rayleigh frequency shift in optical fibers set up in a material are measured from scattered waves of pulse laser light entered into the optical fibers, and distributions of pressure, temperature, and strain of the material along the optical fibers at a measurement time point are analyzed using coefficients that are inherent to the set up optical fibers and correlate pressure, temperature, and strain of material with the Brillouin frequency shift and the Rayleigh frequency shift.
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Patent Agency Ranking
公开(公告)号：US20230393358A1
公开(公告)日：2023-12-07
申请号：US18328314
申请日：2023-06-02
Applicant: Neubrex Energy Services, Inc. , NEUBREX CO., LTD.
Inventor： Kinzo KISHIDA
IPC: G02B6/44
CPC classification number: G02B6/4413
Abstract: A fiber optic cable includes a braided core defining a plurality of helical grooves, and one or more optical fibers disposed along one or more of the helical grooves of the braided core. The elongated structures braided to form the braided core are composed of braided ropes or monolithic wires. An outer layer disposed over an outer surface of the braided core is composed of a metal layer or a flexible plastic layer.
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公开(公告)号：US20190310077A1
公开(公告)日：2019-10-10
申请号：US16307727
申请日：2016-06-08
Applicant: Neubrex Co., Ltd.
Inventor： Kinzo Kishida , Yoshiaki Yamauchi , Mitsunori Yokoyama
Abstract: A DPTSS fiber optic cable includes an optical fiber sheathing cylindrical metal tube accommodating a pressure sensor optical fiber and having a plurality of through holes formed therein; and pressure blocking sections formed at intervals in the axial direction of the cable.
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公开(公告)号：US10429234B2
公开(公告)日：2019-10-01
申请号：US15542588
申请日：2015-01-21
Applicant: NEUBREX CO., LTD.
Inventor： Kenichi Nishiguchi , Kinzo Kishida , Che-Hsien Li
Abstract: A distributed fiber optic acoustic detection device employs a novel distributed acoustic detection method using a phase noise cancelling distributed acoustic sensing (PNC-DAS) technique.
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公开(公告)号：US20180252556A1
公开(公告)日：2018-09-06
申请号：US15758392
申请日：2015-10-06
Applicant: NEUBREX CO., LTD.
Inventor： Kinzo KISHIDA , Yoshiaki YAMAUCHI
CPC classification number: G01D5/35374 , G01D5/268 , G01D5/35358
Abstract: A distributed pressure, temperature, strain (DPTS) sensing cable includes at least two slotted fiber optic metal wires each having a slot groove extended along in an outer circumference of the wires to encapsulate optical fibers in the slot grooves. The two slotted fiber optic metal wires have characteristics different from each other.
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公开(公告)号：US10028667B2
公开(公告)日：2018-07-24
申请号：US15022016
申请日：2014-07-25
Applicant: NEUBREX CO., LTD.
Inventor： Kinzo Kishida , Yoshiaki Yamauchi
IPC: A61B5/0215 , A61B5/1459 , G01L1/24 , G01D5/353 , G01K11/32 , G01K13/00 , A61B5/00 , A61B5/01 , A61B90/30 , A61B5/0205
Abstract: A fiber optic biodiagnostic sensor system includes a blood vessel insertable pressure distribution measurement device to be inserted in vivo into a blood vessel to measure distributions of temperature and pressure of an object to be measured along a predetermined site, the device having an SM optical fiber deformable by temperature and strain, a structural member being in contact with a portion of the optical fiber to convert pressure of the to-be-measured object to strain of the optical fiber; and an outer layer converting the optical fiber and the structural member. The sensor system further includes a measurement unit emitting laser light into the SM optical fiber, detecting a frequency shift produced in the scattered light, and calculating a blood pressure at a given position of the optical fiber from a pressure change and a strain change of the SM optical fiber that are calculated from the frequency shift.
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