公开(公告)号：US20180052252A1

公开(公告)日：2018-02-22

申请号：US15784586

申请日：2017-10-16

Applicant: SILIXA LTD.

Inventor： Mahmoud Farhadiroushan ,  Tom Parker

IPC: G01V11/00 ,  G01N21/68 ,  G01N21/64

CPC classification number: G01V11/005 ,  G01N21/64 ,  G01N21/68

Abstract: 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.

公开(公告)号：US09896929B2

公开(公告)日：2018-02-20

申请号：US14440138

申请日：2013-11-01

Applicant: Silixa Ltd.

Inventor： Mahmoud Farhadiroushan ,  Tom Parker ,  Daniel Finfer ,  Veronique Mahue

IPC: G01N29/04 ,  E21B47/12 ,  G01F1/66 ,  G01P5/24 ,  G01N29/024 ,  G01N29/46 ,  E21B47/022 ,  G01F1/708

CPC classification number: E21B47/123 ,  E21B47/02208 ,  G01F1/7086 ,  G01N29/024 ,  G01N29/46 ,  G01N2291/02836 ,  G01N2291/106 ,  G01P5/241

Abstract: 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.

公开(公告)号：US20170016312A1

公开(公告)日：2017-01-19

申请号：US15122038

申请日：2015-03-02

Applicant: Silixa Ltd.

Inventor： Andrew Clarke ,  Daniel Finfer ,  Veronique Mahue ,  Tom Parker ,  Mahmoud Farhadiroushan

IPC: E21B47/00 ,  G01F23/296 ,  E21B43/12 ,  E21B47/04 ,  E21B47/10

CPC classification number: E21B47/0007 ,  E21B43/128 ,  E21B47/042 ,  E21B47/101 ,  E21B47/123 ,  G01F23/2968 ,  G01H9/004

Abstract: 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.

Abstract translation: 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。

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

IPC: G01H9/00 ,  G02B6/44 ,  G01L1/24

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。

公开(公告)号：US20140126325A1

公开(公告)日：2014-05-08

申请号：US14070802

申请日：2013-11-04

Applicant: Silixa Ltd.

Inventor： Mahmoud Farhadiroushan ,  Tom Parker ,  Daniel Finfer

IPC: G01V1/30

CPC classification number: G01V11/00 ,  E21B47/123 ,  G01V1/226 ,  G01V1/40 ,  G01V2210/1429 ,  G01V2210/6161 ,  G01V2210/644

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20230221151A1

公开(公告)日：2023-07-13

申请号：US17904599

申请日：2021-02-19

Applicant: Silixa Ltd.

Inventor： Mahmoud Farhadiroushan ,  Tom Parker ,  Sergey Shatalin ,  Jack Maxwell

IPC: G01D5/353

CPC classification number: G01D5/35364

Abstract: A long range optical fiber sensor such as a distributed acoustic sensor has a sensing fiber located remotely from the interrogator, with a length of transport fiber path connecting the two. Because no sensing is performed on the transport fiber then the pulse repetition rate from the interrogator can be high enough such that the pulse repetition rate and pulse power are optimised according to the sensing fiber length and hence sensing frequency response and sensitivity are also optimised according to the sensing fiber length.

公开(公告)号：US10927667B2

公开(公告)日：2021-02-23

申请号：US15877588

申请日：2018-01-23

Applicant: Silixa Ltd. ,  CHEVRON U.S.A. INC.

Inventor： Mahmoud Farhadiroushan ,  Tom Parker ,  Daniel Finfer ,  Veronique Mahue

IPC: E21B47/135 ,  G01P5/24 ,  G01N29/46 ,  E21B47/0224 ,  G01F1/708 ,  G01N29/024

Abstract: 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.

公开(公告)号：US10175384B2

公开(公告)日：2019-01-08

申请号：US15784586

申请日：2017-10-16

Applicant: SILIXA LTD.

Inventor： Mahmoud Farhadiroushan ,  Tom Parker

IPC: G01N21/00 ,  G01V11/00 ,  G01N21/68 ,  G01N21/64

Abstract: 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 while 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.

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

IPC: G01H9/00 ,  G02B6/44 ,  G01M7/00 ,  G01L1/24

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.

公开(公告)号：US20170343389A1

公开(公告)日：2017-11-30

申请号：US15532812

申请日：2015-12-02

Applicant: Silixa Ltd. ,  Chevron U.S.A. Inc.

Inventor： Tom Parker ,  Mahmoud Farhadiroushan ,  Arran Gillies

IPC: G01D5/353 ,  G01H9/00 ,  G01K11/32 ,  G01M11/00

Abstract: An optical fiber sensing system includes a sensing optical fiber and one or more optical amplifiers in series with the sensing fiber and arranged to increase the power of sensing pulses travelling along the fiber to thereby increase the range of the sensing system. The optical fiber sensing system is one selected from the group including an optical fiber distributed acoustic sensor (DAS), an optical fiber distributed temperature sensor (DTS), or an optical time domain reflectometry (OTDR) system.