专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2010136810A3 METHOD AND APPARATUS FOR OPTICAL SENSING 审中-公开
公开(公告)号：WO2010136810A3
公开(公告)日：2010-12-02
申请号：PCT/GB2010/050889
申请日：2010-05-27
申请人： SILIXA LTD , FARHADIROUSHAN, Mahmoud , PARKER, Tom Richard , SHATALIN, Sergey
发明人： FARHADIROUSHAN, Mahmoud , PARKER, Tom Richard , SHATALIN, Sergey
IPC分类号： G01D5/353
摘要： 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.

2. 发明申请

WO2010136809A3 OPTICAL SENSOR AND METHOD OF USE 审中-公开
公开(公告)号：WO2010136809A3
公开(公告)日：2010-12-02
申请号：PCT/GB2010/050888
申请日：2010-05-27
申请人： SILIXA LTD , FARHADIROUSHAN, Mahmoud , PARKER, Tom, Richard , SHATALIN, Sergey
发明人： FARHADIROUSHAN, Mahmoud , PARKER, Tom, Richard , SHATALIN, Sergey
IPC分类号： G01D5/353
摘要： An interferometer apparatus for an optical fibre system and method of use is described. The interferometer comprises an optical coupler and optical fibres which define first and second optical paths. Light propagating in the first and second optical paths is refelected 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 fibre. Methods of use in applications to monitoring acoustic perturbations and a calibration method are described.

3. 发明申请

WO2012158371A2 INDUSTRIAL PROCESS MONITORING AND IMAGING 审中-公开
标题翻译：工业过程监控与成像
公开(公告)号：WO2012158371A2
公开(公告)日：2012-11-22
申请号：PCT/US2012/036527
申请日：2012-05-04
申请人： SILIXA LIMITED , KUTLIK, Roy Lester , FINFER, Daniel , PARKER, Tom Richard , LUO, Huping , FARHADIROUSHAN, Mahmoud
发明人： KUTLIK, Roy Lester , FINFER, Daniel , PARKER, Tom Richard , LUO, Huping , FARHADIROUSHAN, Mahmoud
IPC分类号： G03B42/06 , G01F23/296 , G01N29/14
CPC分类号： G01F23/2962 , G01F23/2961 , G01H3/125 , G01H9/00 , G01H9/004 , G01S5/18 , G03B42/06
摘要： Exemplary embodiments include an apparatus for imaging a volume of material contained inside a vessel. The apparatus includes a plurality of synchronized acoustic sensors positioned at a periphery of an inner volume of the vessel. A processor combines the outputs of the acoustic sensors to identify at least one ambient noise source of the industrial process generating a noise field that illuminates an internal volume of the vessel and to provide an image of the material by temporal and spatial coherent processing of the transmission and reflection of the noise field generated by the noise source.
摘要翻译：示例性实施例包括用于对容纳在容器内的材料的体积进行成像的装置。该装置包括位于容器的内部容积的周边的多个同步声学传感器。处理器组合声学传感器的输出以识别工业过程的至少一个环境噪声源，其产生照亮容器的内部体积的噪声场，并且通过传输的时间和空间相干处理来提供材料的图像以及由噪声源产生的噪声场的反射。

4. 发明申请

WO2004073172A2 METHOD AND APPARATUS FOR GENERATION AND TRANSMISSION OF HIGH ENERGY OPTICAL PULSES FOR LONG RANGE MEASUREMENTS 审中-公开
标题翻译：用于长距离测量的高能光学脉冲发生和传输的方法和设备
公开(公告)号：WO2004073172A2
公开(公告)日：2004-08-26
申请号：PCT/GB2004/000565
申请日：2004-02-11
申请人： SENSORNET LIMITED , FARHADIROUSHAN, Mahmoud , PARKER, Tom, Richard
发明人： FARHADIROUSHAN, Mahmoud , PARKER, Tom, Richard
IPC分类号： H04B
CPC分类号： G01K11/32 , G01D5/35364
摘要： A method and apparatus for generating and transmitting high energy optical pulses are described. Distributed temperature sensors usually use Raman scattering in optical fibres as the means to determine the temperature. Here, light from a laser source is sent down a fibre and the small amount of light that is scattered back towards the source is analysed. As the fibre length increases, the resolutions of the temperature and loss measurements become poorer. This is because losses in an optical fibre attenuate the signal. An obvious solution to this problem is to launch more light into the fibre to compensate for the losses but stimulated Raman scattering limits how much light may be launched. The present invention solves this problem by using a pulse conversion method to maximise the resultant pulse energy while the power is kept below SRS threshold.
摘要翻译：描述了用于产生和传输高能光脉冲的方法和设备。分布式温度传感器通常使用光纤中的拉曼散射作为确定温度的手段。这里，来自激光源的光线沿着光纤发送，并且分析向源头散射的少量光线。随着光纤长度的增加，温度和损耗测量的分辨率变得更差。这是因为光纤中的损耗会衰减信号。这个问题的一个明显的解决方案是向光纤中发射更多的光来补偿损失，但是受到拉曼散射的限制会限制可以发射多少光。本发明通过使用脉冲转换方法来解决这个问题，以在功率保持在SRS阈值以下时使得到的脉冲能量最大化。

5. 发明申请

WO2012063062A2 FIBRE OPTIC MONITORING INSTALLATION, APPARATUS, AND METHOD 审中-公开
标题翻译：光纤监控安装，设备和方法
公开(公告)号：WO2012063062A2
公开(公告)日：2012-05-18
申请号：PCT/GB2011/052176
申请日：2011-11-08
申请人： SILIXA LTD , FARHADIROUSHAN, Mahmoud , TODOROV, Mladen
发明人： FARHADIROUSHAN, Mahmoud , TODOROV, Mladen
IPC分类号： G01K11/32 , G01K1/14 , G01L1/24
CPC分类号： G01N21/01 , G01K1/14 , G01K11/32 , G01M11/086 , Y10T29/49826
摘要： The invention relates to installations for fibre optic monitoring of articles, and apparatus and methods for forming such installations, including a modular system and components for forming a fibre optic monitoring installation. Applications of the invention include the monitoring of vessels, chambers, and fluid conduits in industrial processing plants, and the invention has particular application to monitoring large vessels, for example temperature monitoring of vessels used in catalytic reforming processes. Convenient installation on or removal from the article being monitored is achieved by providing a support structure for the fibre optic length, which presents the fibre optic length in a preconfigured orientation suitable for monitoring the article. In a particular embodiment of the invention, the fibre optic length is disposed on a panel in a plurality of dense spiral patterns.
摘要翻译：本发明涉及用于物品的光纤监视的装置，以及用于形成这种装置的装置和方法，包括用于形成光纤监视装置的模块化系统和部件。本发明的应用包括监测工业加工厂中的容器，室和流体导管，并且本发明特别适用于监测大型容器，例如用于催化重整过程的容器的温度监测。通过提供用于光纤长度的支撑结构来实现正在监视的物品的方便的安装或从被检测的物品移除，其将光纤长度呈现为适于监视物品的预配置取向。在本发明的特定实施例中，光纤长度以多个密集的螺旋图案设置在面板上。

6. 发明申请

WO2012168679A1 METHOD AND SYSTEM FOR LOCATING AN ACCOUSTIC SOURCE 审中-公开
标题翻译：方法和系统用于定位焦耳源
公开(公告)号：WO2012168679A1
公开(公告)日：2012-12-13
申请号：PCT/GB2012/000490
申请日：2012-06-06
申请人： SILIXA LTD , FARHADIROUSHAN, Mahmoud , PARKER, Tom , YOUSIF, Kamil
发明人： FARHADIROUSHAN, Mahmoud , PARKER, Tom , YOUSIF, Kamil
IPC分类号： G01H9/00 , G01V1/18
CPC分类号： G01S5/20 , G01H9/004 , G01V1/186
摘要： A method and a system are provided, in which acoustic signals received by distributed acoustic sensors are processed in order to determine the position of a source or sources of the acoustic signals. The method and system are able to determine the position of several acoustic sources simultaneously, by measuring the corresponding several acoustic signals. Furthermore, the strength of the acoustic signal or signals can be determined. The location of the acoustic source may be overlaid on a map of an area being monitored, or be used to generate an alarm if perceived to correspond to a threat or an intrusion, for example in a pipeline monitoring application. Alternatively, the method and systems can be used to monitor a hydraulic fracturing process.
摘要翻译：提供了一种方法和系统，其中处理由分布式声传感器接收的声信号，以便确定声信号的源或源的位置。该方法和系统能够通过测量相应的几个声信号来同时确定多个声源的位置。此外，可以确定声信号或信号的强度。声源的位置可以覆盖在正在被监视的区域的地图上，或者如果被感知为对应于威胁或入侵（例如在管道监视应用中）而用于生成警报。或者，该方法和系统可用于监测水力压裂过程。

7. 发明申请

WO2006003477A2 INTERVENTION ROD 审中-公开
标题翻译：干预杆
公开(公告)号：WO2006003477A2
公开(公告)日：2006-01-12
申请号：PCT/GB2005/050107
申请日：2005-07-07
申请人： SENSORNET LIMITED , HANSEN, Henning , FARHADIROUSHAN, Mahmoud , KLUTH, Richard, Julius
发明人： HANSEN, Henning , FARHADIROUSHAN, Mahmoud , KLUTH, Richard, Julius
IPC分类号： E21B17/20
CPC分类号： E21B23/08 , E21B17/206 , G02B6/4464 , Y10T29/49826 , Y10T137/598
摘要： A rod having an embedded optical fibre has a stiff composite outer layer (10) to make the rod self straightening to enable it to be pushed into a pipe or borehole from a spool. This can help enable a reduction of friction between rod and conduit and can enable longer reach. A barrier layer is provided to separate the fibre from the composite layer. The rod can be retrieved after use. The rod can be narrow enough to enable normal flow along the pipe or borehole, and can be injected and retrieved even when the pipe or borehole is pressurised. The fibre can be used for remote sensing of conditions along the conduit. Other tools can be inserted by the rod during the intervention.
摘要翻译：具有嵌入式光纤的杆具有坚硬的复合外层（10），以使杆自行矫直以使其能够从线轴推入管道或钻孔中。这可以帮助减少杆和导管之间的摩擦，并且可以延长触及时间。提供阻挡层以将纤维与复合层分离。棒可以在使用后取回。该杆可以足够窄以使得能够沿着管道或钻孔正常流动，并且即使在管道或钻孔被加压时也可以注入和取回。光纤可以用于沿着导管的条件的遥感。在干预过程中，其他工具可以被棒插入。

8. 发明申请

WO2005106396A2 DIRECT MEASUREMENT OF BRILLOUIN FREQUENCY IN DISTRIBUTED OPTICAL SENSING SYSTEMS 审中-公开
标题翻译：分布式光学传感系统中BRILLOUIN频率的直接测量
公开(公告)号：WO2005106396A2
公开(公告)日：2005-11-10
申请号：PCT/GB2005/050040
申请日：2005-03-22
申请人： SENSORNET LIMITED , WATLEY, Daniel, Andrew , FARHADIROUSHAN, Mahmoud , SHAW, Barry, John
发明人： WATLEY, Daniel, Andrew , FARHADIROUSHAN, Mahmoud , SHAW, Barry, John
IPC分类号： G01D5/26
CPC分类号： G01M5/0041 , E21B47/102 , G01D5/35364 , G01K11/32 , G01M5/0025 , G01M5/0091 , G01M11/083
摘要： An optical sensing system uses light scattered from a sensing fibre to sense conditions along the fibre, and has a receiver with a frequency to amplitude converter to obtain a frequency of a Brillouin component of the received scattered light, to deduce the conditions. This converter can avoid time consuming scanning of frequencies to obtain the Brillouin frequency spectrum, and avoids the heavy processing load of deducing a peak or average frequency from the spectrum. The converter can be implemented in the optical domain using a grating or interferometer, or in the electrical domain using a diplexer or electrical interferometer. It can generate complementary signals, having opposite signs, a ratio of these signals representing the frequency. This can avoid sensitivity to amplitude changes in the received scattered signals and provide common mode rejection of noise.
摘要翻译：光学感测系统使用从感测光纤散射的光来感测沿着光纤的状态，并具有一个具有频率到幅度转换器的接收器，以获得所接收的散射光的布里渊分量的频率，以推导出条件。该转换器可以避免耗时的频率扫描以获得布里渊频谱，并避免从频谱推导峰值或平均频率的繁重的处理负载。转换器可以使用光栅或干涉仪在光域中实现，或者在电域中使用双工器或电干涉仪实现。它可以产生具有相反符号的互补信号，这些信号代表频率的比率。这可以避免对接收到的散射信号的幅度变化的敏感性，并提供噪声的共模抑制。

9. 发明申请

WO2007066146A2 SENSING SYSTEM USING OPTICAL FIBER SUITED TO HIGH TEMPERATURES 审中-公开
标题翻译：使用适用于高温的光纤的传感系统
公开(公告)号：WO2007066146A2
公开(公告)日：2007-06-14
申请号：PCT/GB2006/050432
申请日：2006-12-06
申请人： SENSORNET LIMITED , FARHADIROUSHAN, Mahmoud , PARKER, Tom , MONDANOS, Michail
发明人： FARHADIROUSHAN, Mahmoud , PARKER, Tom , MONDANOS, Michail
IPC分类号： G02B6/02 , G02B6/44
CPC分类号： G01J5/0821 , E21B47/102 , G01D5/3538 , G01J5/08 , G02B6/2558 , G02B6/4402 , G02B6/4436 , G02B6/4492
摘要： Remote sensing in an environment having temperatures greater than 300ºC, using an optical fiber having a core (10), a cladding (20), and a metallic protective coating (30) on the cladding to protect a surface of the cladding, the cladding having a diameter greater than 150µm, and a thickness of at least 50µm. The larger diameter cladding means stress from the metallic protective layer can be reduced, giving lower optical loss and better hydrogen protection. A metal conduit (330) encapsulates the sensing fiber, and a pump evacuates the conduit to reduce hydrogen seepage. Ceramic splice protectors are used. OTDR is used to determine differential loss at different locations along the fiber. A reflect ive element at the far-end of the fiber eases calibration.
摘要翻译：使用具有芯（10），包层（20）和包层上的金属保护涂层（30）的光纤，在温度高于300℃的环境中进行远程传感; 保护包层的表面，包层的直径大于150微米，厚度至少为50微米。较大直径的包层意味着来自金属保护层的应力可以降低，从而降低光损耗和更好的氢保护。金属导管（330）封装传感光纤，并且泵抽空导管以减少氢气渗漏。使用陶瓷接头保护器。 OTDR用于确定沿光纤不同位置的差分损耗。光纤远端的反射元件简化了校准。

10. 发明申请

WO2015173592A1 METHOD AND SYSTEM FOR DOWNHOLE OBJECT LOCATION AND ORIENTATION DETERMINATION 审中-公开
标题翻译：用于井下物体位置和方位确定的方法和系统
公开(公告)号：WO2015173592A1
公开(公告)日：2015-11-19
申请号：PCT/GB2015/051448
申请日：2015-05-15
申请人： SILIXA LTD.
发明人： MILNE, Craig , FRANKEY, Brian , PARKER, Tom , FARHADIROUSHAN, Mahmoud
IPC分类号： G01V11/00 , G01V1/44 , E21B47/022
CPC分类号： G01V1/46 , E21B43/116 , E21B47/02208 , E21B47/091 , G01D5/14 , G01V1/226 , G01V1/44 , G01V11/002
摘要： Embodiments of the invention provide a downhole device that is intended to be co- located with an optical fiber cable to be found, for example by being fixed together in the same clamp. The device has an accelerometer or other suitable orientation determining means that is able to determine its positional orientation, with respect to gravity. A vibrator or other sounder is provided, that outputs the positional orientation information as a suitable encoded and modulated acoustic signal. A fiber optic distributed acoustic sensor deployed in the vicinity of the downhole device detects the acoustic signal and transmits it back to the surface, where it is demodulated and decoded to obtain the positional orientation information. Given that the device is co-located with the optical fiber the position of the fiber can then be inferred. As explained above, detecting the fiber position is important during perforation operations, so that the fiber is not inadvertently damaged.
摘要翻译：本发明的实施例提供了一种井下装置，其旨在与待发现的光纤缆线共同定位，例如通过在同一夹具中固定在一起。该装置具有能够相对于重力确定其位置取向的加速度计或其它合适的取向确定装置。提供振动器或其他发声器，其输出作为适当的编码和调制声信号的位置取向信息。布置在井下装置附近的光纤分布式声学传感器检测声信号并将其发送回表面，在那里被解调和解码以获得位置取向信息。假设该设备与光纤位于同一位置，则可以推断光纤的位置。如上所述，在穿孔操作期间检测纤维位置是重要的，使得纤维不会被无意地损坏。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式