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公开(公告)号：US09921321B2
公开(公告)日：2018-03-20
申请号：US14914443
申请日：2014-08-25
Applicant: SHELL OIL COMPANY
Inventor： Boris Nikolaevich Kuvshinov , Mikhail Garievich Danilouchkine , Robert Van Es , Theodericus Johannes Henricus Smit , Horng Jye Hwang
CPC classification number: G01V1/005 , G01V1/137 , G01V1/3808
Abstract: Seismic pulses are emitted are emitted with consecutive time intervals that follow a pattern described by several Golomb rulers, wherein at least two of the Golomb rulers have at least four marks, such that pair-wise time intervals between seismic pulse emissions are different, to distinguish seismic reflections stemming from different seismic pulses and/or seismic sources from each other. This allows executing seismic surveys with several simultaneously operated seismic source arrays, thereby reducing the survey cost. In a marine environment the seismic sources may be air-gun arrays towed by one or more vessels, and the method can be also applied onshore.
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公开(公告)号：US09766119B2
公开(公告)日：2017-09-19
申请号：US15259348
申请日：2016-09-08
Applicant: SHELL OIL COMPANY
Inventor： Johannis Josephus Den Boer , Albena Alexandrova Mateeva , Jeremiah Glen Pearce , Jeffery Joseph Mestayer , William Birch , Jorge Louis Lopez , Johan Cornelis Hornman , Boris Nikolaevich Kuvshinov
Abstract: A method of distributed acoustic sensing includes providing a fiber optic distributed acoustic sensing system having a cable. A straight optical fiber extends parallel to a longitudinal axis of the cable along the cable length. A helically wrapped optical fiber extends along the cable length. The method includes transmitting optical signals into and receiving backscattered signals out of the optical fibers consisting of a component of said optical signals which component has been backscattered from impurities or inhomogeneities in the optical fibers, observing changes in the backscattered signals caused by axial stretching and compressing of the optical fibers caused by an incident wave, comparing the backscattered signals of the straight optical fiber and the helically wrapped fiber, and determining, based on the comparing of the backscattered signals, a direction of wave propagation of the incident wave with respect to the fiber axis for detecting broadside waves and axial waves distinguishably.
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Patent Agency Ranking
公开(公告)号：US10088353B2
公开(公告)日：2018-10-02
申请号：US14418393
申请日：2013-07-30
Applicant: SHELL OIL COMPANY
Inventor： Boris Nikolaevich Kuvshinov , Johan Cornelis Hornman
Abstract: A distributed fiber optic cable comprises an elongate body and a first optical fiber longitudinally housed in the body, wherein the fiber describes a sinusoid having an amplitude and a first wavelength along the length of the body and wherein the sinusoid rotates along the length of the body so as to describe a twisted sinusoid having a twist wavelength. A method for sensing an acoustic wave comprises a) providing a set of signals collected from the cable, b) processing the signals so as to divide the fiber in each twist wavelength of cable into a predetermined number of channels, c) measuring the amplitudes in each channel and calculating the maximum and minimum amplitude in a preselected length of cable, d) using the calculated maximum and minimum for the preselected length of cable to determine the amplitude and direction of the wave at the preselected length of cable.
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4.发明授权Detecting broadside acoustic signals with a fiber optical distrubuted acoustic sensing (DAS) assembly 有权用纤维光学分散声学传感（DAS）组件检测宽侧声学信号公开(公告)号：US09494461B2
公开(公告)日：2016-11-15
申请号：US14365231
申请日：2012-12-13
Inventor： Kees Hornman , Albena Alexandrova Mateeva , Jeremiah Glen Pearce , Jeffery Joseph Mestayer , William Birch , Jorge Louis Lopez , Johannis Josephus Den Boer , Boris Nikolaevich Kuvshinov
Abstract: A distributed fiber optic acoustic sensing system comprises an elongate body having an outer surface, an optical fiber disposed on the outer surface at a first predetermined wrap angle, and light transmitting and receiving means optically connected to the fiber for. The elongate body may include at least one substantially flat face, and/or a layer of swellable elastomer surrounding the body, and/or an outer elastomeric tube surrounding the elastomer layer. There may be at least one sensor pad disposed in the outer layer, the sensor pad comprising a stiffener and at least one longitudinal fiber affixed thereto or embedded therein. There may be a body of protective material surrounding the tube, which may have an outer surface that includes at least one substantially flat face and at least one sensor pad disposed in the body.
Abstract translation: 分布式光纤声学感测系统包括具有外表面的细长主体，以第一预定包角设置在外表面上的光纤，以及光纤连接到光纤的光发射和接收装置。 细长主体可以包括至少一个基本平坦的表面，和/或围绕主体的可膨胀弹性体层，和/或围绕弹性体层的外部弹性体管。 可以在外层中设置至少一个传感器垫，传感器垫包括加强件和至少一个固定到其上的纵向纤维或嵌入其中。 可以存在围绕管的保护材料体，其可以具有包括至少一个基本上平坦的表面的外表面和设置在主体中的至少一个传感器垫。
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5.发明授权公开(公告)号：US10788359B2
公开(公告)日：2020-09-29
申请号：US16014670
申请日：2018-06-21
Applicant: SHELL OIL COMPANY
Inventor： Boris Nikolaevich Kuvshinov , Johan Cornelis Hornman
Abstract: A distributed fiber optic cable including an elongate body and optical fibers longitudinally housed in the elongate body. The optical fibers lie in in sinusoidal paths along longitudinal surfaces of a prism. The distributed fiber optic cable can be used for sensing an acoustic wave by measuring backscattered light from a laser pulse input into the optical fibers in the fiber optic cable.
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公开(公告)号：US10139269B2
公开(公告)日：2018-11-27
申请号：US15677640
申请日：2017-08-15
Applicant: SHELL OIL COMPANY
Inventor： Johannis Josephus Den Boer , Albena Alexandrova Mateeva , Jeremiah Glen Pearce , Jeffery Joseph Mestayer , William Birch , Jorge Louis Lopez , Johan Cornelis Hornman , Boris Nikolaevich Kuvshinov
Abstract: A distributed fiber optic acoustic sensing system includes a cable having a cable length. The cable has an elongated body having an outer surface, and at least one straight optical fiber extending parallel to a longitudinal axis of the cable along the cable length; and one or more non-straight optical fibers, such as two orthogonal sinusoidal optical fibers extending along the cable length, or a helically wrapped optical fiber extending along the cable length. The sensing system further has light transmitting and receiving means optically connected to the optical fibers.
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公开(公告)号：US20150260567A1
公开(公告)日：2015-09-17
申请号：US14418393
申请日：2013-07-30
Applicant: SHELL OIL COMPANY
Inventor： Boris Nikolaevich Kuvshinov , Johan Cornelis Hornman
IPC: G01H9/00
CPC classification number: G01H9/004 , G02B6/4413
Abstract: A distributed fiber optic cable comprises an elongate body and a first optical fiber longitudinally housed in the body, wherein the fiber describes a sinusoid having an amplitude and a first wavelength along the length of the body and wherein the sinusoid rotates along the length of the body so as to describe a twisted sinusoid having a twist wavelength. A method for sensing an acoustic wave comprises a) providing a set of signals collected from the cable, b) processing the signals so as to divide the fiber in each twist wavelength of cable into a predetermined number of channels, c) measuring the amplitudes in each channel and calculating the maximum and minimum amplitude in a preselected length of cable, d) using the calculated maximum and minimum for the preselected length of cable to determine the amplitude and direction of the wave at the preselected length of cable.
Abstract translation: 分布式光纤电缆包括细长主体和纵向容纳在主体中的第一光纤，其中光纤描述具有沿主体长度的振幅和第一波长的正弦曲线，并且其中正弦曲线沿着主体的长度旋转 以描述具有扭曲波长的扭曲正弦曲线。 一种用于感测声波的方法包括：a）提供从该电缆收集的一组信号，b）处理该信号以便将该电缆的每个扭曲波长中的光纤分成预定数量的信道，c） 每个通道并计算电缆预选长度的最大和最小振幅，d）使用电缆预选长度的计算最大值和最小值来确定电缆预选长度的波幅和方向。
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