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11. 发明申请

US20180149017A1 ACOUSTIC ILLUMINATION FOR FLOW-MONITORING 审中-公开
公开(公告)号：US20180149017A1
公开(公告)日：2018-05-31
申请号：US15877588
申请日：2018-01-23
申请人： Silixa Ltd.
发明人： Mahmoud Farhadiroushan , Tom Parker , Daniel Finfer , Veronique Mahue
IPC分类号： E21B47/12 , G01N29/024 , E21B47/022 , G01F1/708 , G01N29/46 , G01P5/24
CPC分类号： E21B47/123 , E21B47/02208 , G01F1/7086 , G01N29/024 , G01N29/46 , G01N2291/02836 , G01N2291/106 , G01P5/241
摘要： Externally generated noise can be coupled into a fluid carrying structure such as a pipe, well, or borehole so as to artificially acoustically “illuminate” the pipe, well, or borehole, and allow fluid flow in the structure or structural integrity to be determined. In the disclosed system, externally generated noise is coupled into the structure being monitored at the same time as data logging required to undertake the monitoring is performed. This has three effects. First, the externally generated sound is coupled into the structure so as to “illuminate” acoustically the structure to allow data to be collected from which fluid flow may be determined, and secondly the amount of data that need be collected is reduced, as there is no need to log data when the structure is not being illuminated. Thirdly, there are signal processing advantages in having the data logging being undertaken only when the acoustic illumination occurs.

12. 发明申请

US20180052252A1 Method and System for Determining Downhole Optical Fiber Orientation and/or Location 审中-公开
公开(公告)号：US20180052252A1
公开(公告)日：2018-02-22
申请号：US15784586
申请日：2017-10-16
申请人： SILIXA LTD.
发明人： Mahmoud Farhadiroushan , Tom Parker
IPC分类号： G01V11/00 , G01N21/68 , G01N21/64
CPC分类号： G01V11/005 , G01N21/64 , G01N21/68
摘要： A probe is provided that contacts the inner surface of the casing or other production tubing and imparts energy to the surface at the contact point, for example as heat energy or mechanical energy. Energy is imparted around the circumference of the casing, and a fiber optic distributed sensor located on the outer surface of the casing is used to measure and record the energy that it receives whilst the probe is moved to impart energy around the circumference. A record of energy versus position of the probe around the circumference can be obtained, from which maxima in the detected energy measurements can then be found. The position around the circumference which gave the maximum measurement should be the position at which the optical fiber of the fiber optic distributed sensor is located. In addition, an ultrasonic arrangement is also described, that relies on ultrasonic sound to provide detection.

13. 发明授权

US09896929B2 Acoustic illumination for flow-monitoring 有权
公开(公告)号：US09896929B2
公开(公告)日：2018-02-20
申请号：US14440138
申请日：2013-11-01
申请人： Silixa Ltd.
发明人： Mahmoud Farhadiroushan , Tom Parker , Daniel Finfer , Veronique Mahue
IPC分类号： G01N29/04 , E21B47/12 , G01F1/66 , G01P5/24 , G01N29/024 , G01N29/46 , E21B47/022 , G01F1/708
CPC分类号： E21B47/123 , E21B47/02208 , G01F1/7086 , G01N29/024 , G01N29/46 , G01N2291/02836 , G01N2291/106 , G01P5/241
摘要： Externally generated noise can be coupled into a fluid carrying structure such as a pipe, well, or borehole so as to artificially acoustically “illuminate” the pipe, well, or borehole, and allow fluid flow in the structure or structural integrity to be determined. In the disclosed system, externally generated noise is coupled into the structure being monitored at the same time as data logging required to undertake the monitoring is performed. This has three effects. First, the externally generated sound is coupled into the structure so as to “illuminate” acoustically the structure to allow data to be collected from which fluid flow may be determined, and secondly the amount of data that need be collected is reduced, as there is no need to log data when the structure is not being illuminated. Thirdly, there are signal processing advantages in having the data logging being undertaken only when the acoustic illumination occurs.

14. 发明申请

US20170016312A1 Submersible Pump Monitoring 审中-公开
标题翻译：潜水泵监控
公开(公告)号：US20170016312A1
公开(公告)日：2017-01-19
申请号：US15122038
申请日：2015-03-02
申请人： Silixa Ltd.
发明人： Andrew Clarke , Daniel Finfer , Veronique Mahue , Tom Parker , Mahmoud Farhadiroushan
IPC分类号： E21B47/00 , G01F23/296 , E21B43/12 , E21B47/04 , E21B47/10
CPC分类号： E21B47/0007 , E21B43/128 , E21B47/042 , E21B47/101 , E21B47/123 , G01F23/2968 , G01H9/004
摘要： In order to address the above noted problems, embodiments of the present invention use distributed acoustic sensing to monitor the fluid level in an ESP activated well so as to monitor the condition and performance of the ESP. Embodiments of the invention use the ESP as an acoustic source in order to monitor the annulus fluid level within the well and to monitor the frequency of the ESP. Additionally, embodiments of the present invention may use distributed acoustic sensing to monitor the flow rates of the production fluid above and below the ESP to determine the pump's efficiency. In particular, some embodiments utilise one or more optical fibers to measure the acoustic waves generated by the ESP, wherein the fiber cabling has already been deployed along the length of the well. As such, the present invention is a non-invasive, in-situ method for monitoring the condition and performance of an ESP.
摘要翻译：为了解决上述问题，本发明的实施例使用分布式声学感测来监测ESP激活的井中的液位，以便监测ESP的状况和性能。本发明的实施例使用ESP作为声源，以便监测井内的环状液体水平并监测ESP的频率。此外，本发明的实施例可以使用分布式声学感测来监测ESP上方和下方的生产流体的流量，以确定泵的效率。特别地，一些实施例利用一根或多根光纤来测量由ESP产生的声波，其中光纤布线已沿着该孔的长度展开。因此，本发明是用于监测ESP的状况和性能的非侵入式原位方法。

15. 发明申请

US20160223389A1 NON-ISOTROPIC ACOUSTIC CABLE 有权
标题翻译：非等级声学电缆
公开(公告)号：US20160223389A1
公开(公告)日：2016-08-04
申请号：US15021319
申请日：2014-09-04
申请人： SILIXA LTD.
发明人： Mahmoud Farhadiroushan , Daniel Finfer , Dmitry Strusevich , Sergey Shatalin , Tom Parker
IPC分类号： G01H9/00 , G02B6/44 , G01L1/24
CPC分类号： G01H9/004 , G01L1/242 , G01M7/00 , G02B6/4405 , G02B6/4415
摘要： 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.
摘要翻译：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。

16. 发明申请

US20140126325A1 ENHANCED SEISMIC SURVEYING 审中-公开
标题翻译：增强地震勘测
公开(公告)号：US20140126325A1
公开(公告)日：2014-05-08
申请号：US14070802
申请日：2013-11-04
申请人： Silixa Ltd.
发明人： Mahmoud Farhadiroushan , Tom Parker , Daniel Finfer
IPC分类号： G01V1/30
CPC分类号： G01V11/00 , E21B47/123 , G01V1/226 , G01V1/40 , G01V2210/1429 , G01V2210/6161 , G01V2210/644
摘要： Embodiments of the present invention help in the processing and interpretation of seismic survey data, by correlating or otherwise comparing or associating seismic data obtained from a seismic survey with flow information obtained from a well or borehole in the surveyed area. In particular, embodiments of the present invention allow for flow data representing a flow profile along a well that is being monitored by a distributed acoustic sensor to be determined, such that regions of higher flow in the well can be determined. For example, in the production zone the well will be perforated to allow oil to enter the well, but it has not previously been possible to determine accurately where in the production zone the oil is entering the well. However, by determining a flow rate profile along the well using the i)AS then this provides information as to where in the perforated production zone oil is entering the well, and hence the location of oil bearing sands. This location can then be combined or otherwise correlated, used, or associated with petroleum reservoir location information obtained from the seismic survey, to improve the confidence and/or accuracy in the determined petroleum reservoir location.
摘要翻译：本发明的实施例通过将从地震勘测获得的地震数据与从被测区域中的井或井眼获得的流量信息进行关联或以其他方式比较或相关联来帮助处理和解释地震勘测数据。特别地，本发明的实施例允许流动数据表示沿着正在被待确定的分布式声学传感器监测的井的流动分布，使得能够确定井中较高流量的区域。例如，在生产区域中，井将被穿孔以允许油进入井，但是以前不可能准确地确定在生产区中油在哪里进入井。然而，通过使用i）AS确定沿着井的流量分布，则这提供关于穿孔生产区油在进入井的位置以及因此提供含油砂的位置的信息。然后可以将该位置组合或以其他方式相关联，使用或与从地震勘测获得的石油储层位置信息相关联，以提高确定的石油储层位置的置信度和/或准确度。

17. 发明公开

US20230314189A1 Method and Apparatus for Optical Sensing 审中-公开
公开(公告)号：US20230314189A1
公开(公告)日：2023-10-05
申请号：US18209569
申请日：2023-06-14
申请人： Silixa Ltd.
发明人： Mahmoud Farhadiroushan , Tom Parker , Sergey Shatalin
IPC分类号： G01D5/353 , G01H9/00
CPC分类号： G01D5/3537 , G01H9/004 , G01D5/35306 , G01D5/35374 , E21B47/135
摘要： An optical fiber distributed acoustic sensor system makes use of a specially designed optical fiber to improve overall sensitivity of the system by a factor in excess of 10. This is achieved by inserting into the fiber weak broadband reflectors periodically along the fiber. The reflectors reflect a small proportion of the light from the DAS incident thereon back along the fiber, typically in the region of 0.001% to 0.1%. To allow for temperate compensation to ensure that the same reflectivity is obtained if the temperature changes, the reflection bandwidth is relatively broadband. The reflectors are formed from a series of fiber Bragg gratings, each with a different center reflecting frequency, the reflecting frequencies and bandwidths of the gratings being selected to provide the broadband reflection. The reflectors are spaced at the desired spatial resolution of the optical fiber DAS.

18. 发明授权

US11719560B2 Method and apparatus for optical sensing 有权
公开(公告)号：US11719560B2
公开(公告)日：2023-08-08
申请号：US16934189
申请日：2020-07-21
申请人： Silixa Ltd.
发明人： Mahmoud Farhadiroushan , Tom Parker , Sergey Shatalin
IPC分类号： G01D5/353 , G01H9/00 , E21B47/135 , G01V8/16
CPC分类号： G01D5/3537 , G01D5/35306 , G01D5/35374 , G01H9/004 , E21B47/135 , G01V8/16
摘要： An optical fiber distributed acoustic sensor system makes use of a specially designed optical fiber to improve overall sensitivity of the system by a factor in excess of 10. This is achieved by inserting into the fiber weak broadband reflectors periodically along the fiber. The reflectors reflect a small proportion of the light from the DAS incident thereon back along the fiber, typically in the region of 0.001% to 0.1%. To allow for temperate compensation to ensure that the same reflectivity is obtained if the temperature changes, the reflection bandwidth is relatively broadband. The reflectors are formed from a series of fiber Bragg gratings, each with a different center reflecting frequency, the reflecting frequencies and bandwidths of the gratings being selected to provide the broadband reflection. The reflectors are spaced at the desired spatial resolution of the optical fiber DAS.

19. 发明申请

US20210072190A1 Multi-Phase Flow-Monitoring with an Optical Fiber Distributed Acoustic Sensor 有权
公开(公告)号：US20210072190A1
公开(公告)日：2021-03-11
申请号：US17102221
申请日：2020-11-23
申请人： Silixa Ltd , Chevron U.S.A. Inc.
发明人： Mohammad Amir , Mahmoud Farhadiroushan , Daniel Finfer , Veronique Mahue , Tom Parker
IPC分类号： G01N29/024 , G01N29/24 , G01F1/66 , G01N29/46 , G01F1/74 , G01F1/708
摘要： Embodiments of the invention provide a “tool-kit” of processing techniques which can be employed in different combinations depending on the circumstances. For example, flow speed can be found using eddy tracking techniques, or by using speed of sound measurements. Moreover, composition can be found by using speed of sound measurements and also by looking for turning points in the k-w curves, particularly in stratified multi-phase flows. Different combinations of the embodiments can therefore be put together to provide further embodiments, to meet particular flow sensing requirements, both on the surface and downhole. Once the flow speed is known, then at least in the case of a single phase flow, the flow speed can be multiplied by the interior cross-sectional area of the pipe to obtain the flow rate. The mass flow rate can then be obtained if the density of the fluid is known, once the composition has been determined.

20. 发明授权

US10677642B2 Flexible substrate fiber optic sensing mat for distributed acoustic sensing 有权
公开(公告)号：US10677642B2
公开(公告)日：2020-06-09
申请号：US15507111
申请日：2015-08-20
申请人： Silixa Ltd.
发明人： Mahmoud Farhadiroushan , Veronique Mahue , Tom Parker , Sergey Shatalin
IPC分类号： G01H9/00 , G01D5/353
摘要： 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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