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公开(公告)号：US10677642B2
公开(公告)日：2020-06-09
申请号：US15507111
申请日：2015-08-20
Applicant: Silixa Ltd.
Inventor： Mahmoud Farhadiroushan , Veronique Mahue , Tom Parker , Sergey Shatalin
Abstract: A prefabricated mat-like structure having lengths of fiber mounted thereon or therein in a predetermined deployment pattern that provides a high spatial density of fiber to give increased spatial sensing resolution is described. The prefabricated mat-like structures may be very easily deployed by being placed against and/or wrapped around an object to be monitored, typically being fastened in place by clamps or the like. In addition, easy removal from the object is also obtained, by simply unfastening the mat-like structure, which may then be redeployed elsewhere. The prefabricated mat-like structure having the fiber already mounted thereon or therein therefore provides a very convenient and easily installable and removable solution.
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公开(公告)号：US10048115B2
公开(公告)日：2018-08-14
申请号：US15277347
申请日：2016-09-27
Applicant: Silixa Ltd.
Inventor： Mahmoud Farhadiroushan , Tom Richard Parker , Sergey Shatalin
Abstract: An interferometer apparatus for an optical fiber system and method of use is described. The interferometer comprises an optical coupler and optical fibers which define first and second optical paths. Light propagating in the first and second optical paths is reflected back to the optical coupler to generate an interference signal. First, second and third interference signal components are directed towards respective first, second and third photodetectors. The third photodetector is connected to the coupler via a non-reciprocal optical device and is configured to measure the intensity of the third interference signal component directed back towards the input fiber. Methods of use in applications to monitoring acoustic perturbations and a calibration method are described.
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公开(公告)号：US09804021B2
公开(公告)日：2017-10-31
申请号：US15048315
申请日：2016-02-19
Applicant: Silixa Ltd.
Inventor： Mahmoud Farhadiroushan , Tom Richard Parker , Sergey Shatalin
CPC classification number: G01H9/004 , E21B47/0002 , E21B47/101 , G01D5/35303 , G01D5/35306 , G01D5/35325 , G01D5/35335 , G01D5/35358 , G01D5/35364 , G01D5/35377 , G01D5/35383 , G01F1/66 , G01F1/661 , G01M11/331 , G01V1/40
Abstract: Apparatus and methods for fast quantitative measurement of perturbation of optical fields transmitted, reflected and/or scattered along a length of an optical fibre can be used for point sensors as well as distributed sensors or the combination of both. In particular, this technique can be applied to distributed sensors while extending dramatically the speed and sensitivity to allow the detection of acoustic perturbations anywhere along a length of an optical fibre while achieving fine spatial resolution. Advantages of this technique include a broad range of acoustic sensing and imaging applications. Typical uses are for monitoring oil and gas wells such as for distributed flow metering and/or imaging, seismic imaging, monitoring long cables and pipelines, imaging within large vessel as well as for security applications.
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公开(公告)号：US20170248462A1
公开(公告)日：2017-08-31
申请号：US15507111
申请日：2015-08-20
Applicant: Silixa Ltd.
Inventor： Mahmoud Farhadiroushan , Veronique Mahue , Tom Parker , Sergey Shatalin
IPC: G01H9/00
Abstract: A prefabricated mat-like structure having lengths of fiber mounted thereon or therein in a predetermined deployment pattern that provides a high spatial density of fiber to give increased spatial sensing resolution is described. The prefabricated mat-like structures may be very easily deployed by being placed against and/or wrapped around an object to be monitored, typically being fastened in place by clamps or the like. In addition, easy removal from the object is also obtained, by simply unfastening the mat-like structure, which may then be redeployed elsewhere. The prefabricated mat-like structure having the fiber already mounted thereon or therein therefore provides a very convenient and easily installable and removable solution
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公开(公告)号：US20170082464A1
公开(公告)日：2017-03-23
申请号：US15368945
申请日：2016-12-05
Applicant: Silixa Ltd.
Inventor： Mahmoud Farhadiroushan , Tom Richard Parker , Sergey Shatalin
CPC classification number: G01H9/004 , E21B47/0002 , E21B47/101 , G01D5/35303 , G01D5/35306 , G01D5/35325 , G01D5/35335 , G01D5/35358 , G01D5/35364 , G01D5/35377 , G01D5/35383 , G01F1/66 , G01F1/661 , G01M11/331 , G01V1/40
Abstract: The present invention provides novel apparatus and methods for fast quantitative measurement of perturbation of optical fields transmitted, reflected and/or scattered along a length of an optical fibre. The present invention can be used for point sensors as well as distributed sensors or the combination of both. In particular this technique can be applied to distributed sensors while extending dramatically the speed and sensitivity to allow the detection of acoustic perturbations anywhere along a length of an optical fibre while achieving fine spatial resolution. The present invention offers unique advantages in a broad range of acoustic sensing and imaging applications. Typical uses are for monitoring oil and gas wells such as for distributed flow metering and/or imaging, seismic imaging, monitoring long cables and pipelines, imaging within large vessel as well as for security applications.
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Patent Agency Ranking
公开(公告)号：US20160258795A1
公开(公告)日：2016-09-08
申请号：US15029480
申请日：2014-10-15
Applicant: SILIXA LTD.
Inventor： Mahmoud Farhadiroushan , Daniel Finfer , Veronique Mahue , Tom Parker , Sergey Shatalin , Dmitry Strusevich
CPC classification number: G01F1/661 , G01D5/3537 , G02B6/4415
Abstract: Embodiments of the present invention provide a cable for optical fiber sensing applications formed from fiber wound around a cable core. A protective layer is then preferably placed over the top of the wound fiber, to protect the fiber, and to help keep it in place on the cable core. The cable core is preferably of a diameter to allow bend-insensitive fiber to be wound thereon with low bending losses. The effect of winding the fiber onto the cable core means that the longitudinal sensing resolution of the resulting cable is higher than simple straight fiber, when the cable is used with an optical fiber sensing system such as a DAS or DTS system. The achieved resolution for the resulting cable is a function of the fiber winding diameter and pitch, with a larger diameter and reduced winding pitch giving a higher longitudinal sensing resolution.
Abstract translation: 本发明的实施例提供了一种用于光纤传感应用的电缆，其由缠绕在电缆芯上的光纤形成。 然后优选将保护层放置在缠绕光纤的顶部上方，以保护光纤，并帮助将其保持在电缆芯上的适当位置。 电缆芯优选具有允许弯曲不敏感纤维以低弯曲损耗缠绕在其上的直径。 将光纤缠绕到电缆芯上的效果意味着当电缆与诸如DAS或DTS系统的光纤传感系统一起使用时，所得电缆的纵向感测分辨率高于简单的直线光纤。 所得到的电缆的分辨率是光纤绕组直径和间距的函数，具有较大的直径和减小的绕组间距，从而提供更高的纵向感测分辨率。
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公开(公告)号：US20240012760A1
公开(公告)日：2024-01-11
申请号：US18370969
申请日：2023-09-21
Applicant: Silixa Ltd.
Inventor： Mahmoud Farhadiroushan , Tom Richard Parker , Sergey Shatalin
CPC classification number: G01H9/004 , G01D5/35306
Abstract: The present invention provides novel apparatus and methods for fast quantitative measurement of perturbation of optical fields transmitted, reflected and/or scattered along a length of an optical fibre. The present invention can be used for point sensors as well as distributed sensors or the combination of both. In particular this technique can be applied to distributed sensors while extending dramatically the speed and sensitivity to allow the detection of acoustic perturbations anywhere along a length of an optical fibre while achieving fine spatial resolution. The present invention offers unique advantages in a broad range of acoustic sensing and imaging applications. Typical uses are for monitoring oil and gas wells such as for distributed flow metering and/or imaging, seismic imaging, monitoring long cables and pipelines, imaging within large vessel as well as for security applications.
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公开(公告)号：US11802789B2
公开(公告)日：2023-10-31
申请号：US17364595
申请日：2021-06-30
Applicant: Silixa Ltd.
Inventor： Mahmoud Farhadiroushan , Tom Richard Parker , Sergey Shatalin
IPC: G01H9/00 , G01D5/353 , E21B47/002 , E21B47/107 , G01M11/00 , G01F1/661 , G01F1/66 , G01V1/40
CPC classification number: G01H9/004 , E21B47/002 , E21B47/107 , G01D5/35303 , G01D5/35306 , G01D5/35325 , G01D5/35335 , G01D5/35358 , G01D5/35364 , G01D5/35377 , G01D5/35383 , G01F1/66 , G01F1/661 , G01M11/331 , G01V1/40 , E21B47/0025
Abstract: The present invention provides novel apparatus and methods for fast quantitative measurement of perturbation of optical fields transmitted, reflected and/or scattered along a length of an optical fibre. The present invention can be used for point sensors as well as distributed sensors or the combination of both. In particular this technique can be applied to distributed sensors while extending dramatically the speed and sensitivity to allow the detection of acoustic perturbations anywhere along a length of an optical fibre while achieving fine spatial resolution. The present invention offers unique advantages in a broad range of acoustic sensing and imaging applications. Typical uses are for monitoring oil and gas wells such as for distributed flow metering and/or imaging, seismic imaging, monitoring long cables and pipelines, imaging within large vessel as well as for security applications.
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公开(公告)号：US11467007B2
公开(公告)日：2022-10-11
申请号：US17328014
申请日：2021-05-24
Applicant: Silixa Ltd. , Chevron U.S.A. Inc.
Inventor： Sergey Shatalin , Julian Dajczgewand , Mahmoud Farhadiroushan , Tom Parker
Abstract: An improved optical fiber distributed acoustic sensor system uses an optical fiber having reflector portions distributed along its length in at least a first portion. The reflector portions are positioned along the fiber separated by a distance that is equivalent to twice the distance an optical pulse travels along the fiber in a single sampling period of the data acquisition opto-electronics within the sensor system. No oversampling of the reflections of the optical pulses from the reflector portions is undertaken. The sampling points for data acquisition in the sensor system are aligned with the reflections that arrive at the sensor system from along the sensing fiber. Adaptive delay componentry adaptively aligns the reflected optical signals (or their electrical analogues) with the sampling points. Control over the sampling points can re-synchronise the sampling points with the returning reflections. Reflection equalisation componentry may reduce the dynamic range of the returning reflections.
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公开(公告)号：US11079269B2
公开(公告)日：2021-08-03
申请号：US16508522
申请日：2019-07-11
Applicant: Silixa Ltd.
Inventor： Mahmoud Farhadiroushan , Tom Richard Parker , Sergey Shatalin
IPC: G01H9/00 , G01D5/353 , E21B47/002 , E21B47/107 , G01M11/00 , G01F1/66 , G01V1/40
Abstract: The present invention provides novel apparatus and methods for fast quantitative measurement of perturbation of optical fields transmitted, reflected and/or scattered along a length of an optical fibre. The present invention can be used for point sensors as well as distributed sensors or the combination of both. In particular this technique can be applied to distributed sensors while extending dramatically the speed and sensitivity to allow the detection of acoustic perturbations anywhere along a length of an optical fibre while achieving fine spatial resolution. The present invention offers unique advantages in a broad range of acoustic sensing and imaging applications. Typical uses are for monitoring oil and gas wells such as for distributed flow metering and/or imaging, seismic imaging, monitoring long cables and pipelines, imaging within large vessel as well as for security applications.
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