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公开(公告)号：US09989388B2
公开(公告)日：2018-06-05
申请号：US15029480
申请日：2014-10-15
Applicant: SILIXA LTD. , Chevron U.S.A. Inc.
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.
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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：US10451462B2
公开(公告)日：2019-10-22
申请号：US15962196
申请日：2018-04-25
Applicant: SILIXA LTD. , CHEVRON USA INC.
Inventor： Mahmoud Farhadiroushan , Daniel Finfer , Veronique Mahue , Tom Parker , Sergey Shatalin , Dmitry Strusevich
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.
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Patent Agency Ranking
公开(公告)号：US10345139B2
公开(公告)日：2019-07-09
申请号：US15804657
申请日：2017-11-06
Applicant: Silixa Ltd.
Inventor： Mahmoud Farhadiroushan , Daniel Finfer , Dmitry Strusevich , Sergey Shatalin , Tom Parker
Abstract: Embodiments of the present invention address aliasing problems by providing a plurality of discrete acoustic sensors along a cable whereby acoustic signals may be measured in situations where the fiber optic cable has not been secured to a structure or area by a series of clamps. Acoustic sampling points are achieved by selectively enhancing the acoustic coupling between the outer layer and the at least one optical fiber arrangement, such that acoustic energy may be transmitted selectively from the outer layer to the at least one optical fiber arrangement. The resulting regions of acoustic coupling along the cable allow the optical fiber to detect acoustic signals. Regions between the outer layer and the at least one optical fiber arrangement that contain material which is acoustically insulating further this enhancement since acoustic waves are unable to travel through such mediums, or at least travel through such mediums at a reduced rate.
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公开(公告)号：US20160223389A1
公开(公告)日：2016-08-04
申请号：US15021319
申请日：2014-09-04
Applicant: SILIXA LTD.
Inventor： Mahmoud Farhadiroushan , Daniel Finfer , Dmitry Strusevich , Sergey Shatalin , Tom Parker
CPC classification number: G01H9/004 , G01L1/242 , G01M7/00 , G02B6/4405 , G02B6/4415
Abstract: Embodiments of the present invention address aliasing problems by providing a plurality of discrete acoustic sensors along a cable whereby acoustic signals may be measured in situations where the fibre optic cable has not been secured to a structure or area by a series of clamps, as described in the prior art. Acoustic sampling points are achieved by selectively enhancing the acoustic coupling between the outer layer and the at least one optical fibre arrangement, such that acoustic energy may be transmitted selectively from the outer layer to the at least one optical fibre arrangement. The resulting regions of acoustic coupling along the cable allow the optical fibre to detect acoustic signals. Regions between the outer layer and the at least one optical fibre arrangement that contain material which is acoustically insulating further this enhancement since acoustic waves are unable to travel through such mediums, or at least travel through such mediums at a reduced rate.
Abstract translation: 本发明的实施例通过沿着电缆提供多个离散的声学传感器来解决混叠问题，从而可以在光纤电缆未通过一系列夹具固定到结构或区域的情况下测量声信号，如 现有技术 通过选择性地增强外层和至少一个光纤布置之间的声耦合来实现声学采样点，使得声能可以从外层选择性地传输到至少一个光纤装置。 所产生的沿着电缆的声耦合区域允许光纤检测声信号。 外层和至少一个光纤布置之间的区域包含进一步声学绝缘的材料，因为声波不能穿过这种介质，或至少以降低的速率行进通过这种介质。
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公开(公告)号：US20180058916A1
公开(公告)日：2018-03-01
申请号：US15804657
申请日：2017-11-06
Applicant: Silixa Ltd.
Inventor： Mahmoud Farhadiroushan , Daniel Finfer , Dmitry Strusevich , Sergey Shatalin , Tom Parker
CPC classification number: G01H9/004 , G01L1/242 , G01M7/00 , G02B6/4405 , G02B6/4415
Abstract: Embodiments of the present invention address aliasing problems by providing a plurality of discrete acoustic sensors along a cable whereby acoustic signals may be measured in situations where the fibre optic cable has not been secured to a structure or area by a series of clamps. Acoustic sampling points are achieved by selectively enhancing the acoustic coupling between the outer layer and the at least one optical fibre arrangement, such that acoustic energy may be transmitted selectively from the outer layer to the at least one optical fibre arrangement. The resulting regions of acoustic coupling along the cable allow the optical fibre to detect acoustic signals. Regions between the outer layer and the at least one optical fibre arrangement that contain material which is acoustically insulating further this enhancement since acoustic waves are unable to travel through such mediums, or at least travel through such mediums at a reduced rate.
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公开(公告)号：US09823114B2
公开(公告)日：2017-11-21
申请号：US15021319
申请日：2014-09-04
Applicant: Silixa Ltd.
Inventor： Mahmoud Farhadiroushan , Daniel Finfer , Dmitry Strusevich , Sergey Shatalin , Tom Parker
CPC classification number: G01H9/004 , G01L1/242 , G01M7/00 , G02B6/4405 , G02B6/4415
Abstract: Embodiments of the present invention address aliasing problems by providing a plurality of discrete acoustic sensors along a cable whereby acoustic signals may be measured in situations where the fiber optic cable has not been secured to a structure or area by a series of clamps, as described in the prior art. Acoustic sampling points are achieved by selectively enhancing the acoustic coupling between the outer layer and the at least one optical fiber arrangement, such that acoustic energy may be transmitted selectively from the outer layer to the at least one optical fiber arrangement. The resulting regions of acoustic coupling along the cable allow the optical fiber to detect acoustic signals. Regions between the outer layer and the at least one optical fiber arrangement that contain material which is acoustically insulating further this enhancement since acoustic waves are unable to travel through such mediums, or at least travel through such mediums at a reduced rate.
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公开(公告)号：US20180245957A1
公开(公告)日：2018-08-30
申请号：US15962196
申请日：2018-04-25
Applicant: SILIXA LTD. , CHEVRON USA INC.
Inventor： Mahmoud Farhadiroushan , Daniel Finfer , Veronique Mahue , Tom Parker , Sergey Shatalin , Dmitry Strusevich
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.
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