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.

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

IPC: G01D5/353 ,  G01D5/26

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.

公开(公告)号：US20250060231A1

公开(公告)日：2025-02-20

申请号：US18725016

申请日：2022-01-26

Applicant: NEUBREX CO.,LTD.

Inventor： Kinzo KISHIDA

IPC: G01D5/353 ,  G02B6/44

Abstract: This power cable monitoring system includes: a power cable including a power transmission cable provided at an inner circumferential part, an armoring wire provided at an outer circumferential part, and sensor ropes having an optical fiber to detect a physical quantity of a measurement target; and a backscattering light measurement device which measures distribution of the physical quantity of the measurement target, using backscattering light from the optical fiber, wherein distribution of temperature and strain of the power cable is obtained from a frequency shift signal of Rayleigh backscattering light obtained by the backscattering light measurement device on the basis of a signal detected by the sensor ropes, and a polarization distribution signal obtained from the Rayleigh backscattering light.

公开(公告)号：US20240302552A1

公开(公告)日：2024-09-12

申请号：US18599709

申请日：2024-03-08

Applicant: Neubrex Energy Services, Inc. ,  Neubrex, Co., Ltd.

Inventor： Kinzo KISHIDA

IPC: G01V1/22

CPC classification number: G01V1/226

Abstract: A seismic monitoring system, including a fiber optic cable defining a central axis and including an axial optical fiber disposed along the central axis, and three helical optical fibers disposed helically around the central axis, said three helical optical fibers being equidistantly spaced apart, a strain sensing unit configured to measure axial strain distribution in the axial optical fiber and in the three helical optical fibers, and a processing server configured to calculate, from the measured axial strain distribution in the axial optical fiber and in the three helical optical fibers, axial strain distribution in the fiber optic cable, pressure distribution in the fiber optic cable, bending distribution in the fiber optic cable in a first direction, and bending distribution in the fiber optic cable in a second direction perpendicular to the first direction.

公开(公告)号：US20230332931A1

公开(公告)日：2023-10-19

申请号：US18044165

申请日：2020-10-15

Applicant: NEUBREX CO.,LTD. ,  NISHI NIPPON ELECTRIC WIRE & CABLE CO., LTD.

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.

公开(公告)号：US20170356793A1

公开(公告)日：2017-12-14

申请号：US15542588

申请日：2015-01-21

Applicant: NEUBREX CO., LTD.

Inventor： Kenichi NISHIGUCHI ,  Kinzo KISHIDA ,  Che-Hsien LI

IPC: G01H9/00

CPC classification number: G01H9/006 ,  G01H9/002 ,  G01V1/001 ,  G01V1/226 ,  G01V1/42

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.

公开(公告)号：US20240361159A1

公开(公告)日：2024-10-31

申请号：US18684804

申请日：2021-10-06

Applicant: NEUBREX CO., LTD.

Inventor： Kinzo KISHIDA ,  Yahei KOYAMADA ,  Kenichi NISHIGUCHI ,  Daiji AZUMA ,  Che-Hsien LI

IPC: G01D5/353

CPC classification number: G01D5/35361

Abstract: A Rayleigh intensity pattern measurement device includes: a tunable-wavelength LD (1); an optical coupler; a reception unit which receives coherent light from the tunable-wavelength LD and the Rayleigh scattering light; and an RIP digital processing unit which receives an output signal from the reception unit by an A/D converter, calculates a cross-correlation coefficient from two different Rayleigh intensity pattern signals obtained from the Rayleigh scattering light, and stores a cross-correlation coefficient obtained from a result of comparison with a given threshold. If the compared cross-correlation coefficient is smaller than the threshold, the cross-correlation coefficient is calculated until becoming equal to or greater than the threshold, and Rayleigh frequency shift is calculated from the cross-correlation coefficient that has become equal to or greater than the threshold, whereby a strain distribution or a temperature distribution of a measurement target is measured.

公开(公告)号：US20230408781A1

公开(公告)日：2023-12-21

申请号：US18250241

申请日：2020-12-21

Applicant: NEUBREX CO., LTD.

Inventor： Kinzo KISHIDA

IPC: G02B6/44 ,  G01B11/16

CPC classification number: G02B6/4429 ,  G01B11/16

Abstract: An armored DSS cable includes: an inner layer part including a first rope helically wound; and a surface layer part including an optical fiber module and a plurality of third ropes, the optical fiber module having an optical fiber and a plurality of second ropes helically surrounding the optical fiber and having a smaller outer diameter than the first rope, the third ropes having a larger outer diameter than the first rope, such that the optical fiber module and the third ropes are arranged on an identical circle and helically wound, wherein the inner layer part and the surface layer part are formed concentrically.

公开(公告)号：US20210285322A1

公开(公告)日：2021-09-16

申请号：US16815558

申请日：2020-03-11

Applicant: Neubrex Co., Ltd.

Inventor： Ge JIN ,  Kinzo KISHIDA

IPC: E21B49/00 ,  G01V1/22 ,  G01V1/42 ,  E21B43/267 ,  E21B47/06

Abstract: An oil well production method in which a plurality of producers are arranged in a horizontal direction, includes boring a monitor well adjacent to one of the producers in the horizontal direction, installing a measurement optical fiber cable in the monitor well, performing Brillouin measurement and Rayleigh measurement for a strain distribution, a pressure distribution, and a temperature distribution of the monitor well along the measurement optical fiber cable over a period in which a fracture occurs hydraulically in the producers and an oil producing period, analyzing data measured through the Brillouin measurement and the Rayleigh measurement, and determining an arrangement interval of the producers in the horizontal direction and a hydraulic fracturing parameter.

公开(公告)号：US20210063209A1

公开(公告)日：2021-03-04

申请号：US16985494

申请日：2020-08-05

Applicant: NEUBREX CO., LTD.

Inventor： Masanori NAKAMICHI ,  Kazushige NAKAO ,  Kinzo KISHIDA

IPC: G01D5/353 ,  G01K11/32

Abstract: A monitoring humidity measurement system includes: a humidity measurement optical fiber including a first optical fiber and a humidity detection layer provided so as to annularly cover the first optical fiber; a reference optical fiber including a second optical fiber; a plurality of optical communication cables; and a signal processing device configured to, with a laser beam entering into the first and second optical fibers, calculate and obtain Brillouin frequency shift and Rayleigh frequency shift of backscatter light from the first and second optical fibers based on the entering laser beam, and store predetermined constants, wherein reference data and target data are measured from the Rayleigh frequency shift and an initial humidity value calculated from the Brillouin frequency shift, and the value of humidity at the present time is calculated on the basis of Rayleigh frequency shift per unit humidity calculated from a difference between the above two data.