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公开(公告)号：US12037892B2
公开(公告)日：2024-07-16
申请号：US15569464
申请日：2015-05-29
IPC分类号： E21B47/095 , E21B47/001 , E21B47/107 , G01S7/52 , G01S7/54 , G01S7/56 , G01S15/86 , G01S15/89 , G06T5/00
CPC分类号： E21B47/095 , E21B47/001 , E21B47/107 , G01S7/52004 , G01S7/54 , G01S7/56 , G01S15/86 , G01S15/89 , G06T5/00 , G06T2207/20061
摘要： A system includes a controlled acoustic source. The system also includes distributed acoustic sensors along a conduit. The distributed acoustic sensors obtain acoustic signal measurements as a function of position along the conduit in response to at least one acoustic signal provided by the controlled acoustic source. The system also includes a processing unit that generates an acoustic activity plot or report based on the acoustic signal measurements. The acoustic activity plot or report is used to identify at least one acoustic impedance boundary anomaly as a function of position along the conduit.
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公开(公告)号：US11299985B2
公开(公告)日：2022-04-12
申请号：US16634778
申请日：2019-02-13
发明人： Daniel Joshua Stark , Patrick John Jonke , Li Gao , Yao Ge , Alexis Garcia , John L. Maida
摘要： An acoustic receiver is provided. The acoustic receiver includes an optical vibrometer having an optical emitter and an optical receiver. The optical receiver is operable to emit an optical beam to a single point of reference on a conduit, and the optical receiver is operable to receive one or more reflections of the optical beam off of the single point of reference on the conduit, thereby detecting waves propagating through the conduit created by an acoustic transmitter. A processor is coupled with the optical emitter and the optical receiver. The processor is operable to: determine components of the waves created by the acoustic transmitter based on the one or more reflections of the optical beam; and determine a signal transmitted from the acoustic transmitter based on the components of the waves.
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公开(公告)号：US11131185B1
公开(公告)日：2021-09-28
申请号：US16832333
申请日：2020-03-27
IPC分类号： E21B23/14 , E21B47/135 , E21B49/00 , E21B23/01 , E21B23/00 , E21B33/12 , E21B47/07 , E21B43/26 , E21B17/20 , G01V8/16 , E21B47/06
摘要： Aspects of the subject technology relate to systems and methods for deploying fiber optic lines in a wellbore using a fiber optic deployment device. The device can include at least one fiber optic spool forming a canister. The canister can be operable to self-propel through at least a portion of the wellbore. Each of the at least one fiber optic spool can comprising one or more fiber optic lines. Each of the one or more fiber optic lines can be coupled to a bridge plug at a first end and coupled to a cable at a second end opposite the first end. The device can include a sleeve covering the at least one fiber optic spool.
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公开(公告)号：US20210222549A1
公开(公告)日：2021-07-22
申请号：US16305548
申请日：2016-08-26
IPC分类号： E21B47/135 , G01J1/02 , G01J1/42 , H01L39/10 , G01H9/00
摘要： In some embodiments, a method and apparatus, as well as an article, may operate to determine downhole properties based on detected optical signals. An optical detection apparatus can include an optical detector including a superconducting nanowire single photon detector (SNSPD) for detecting light received at an input section of fiber optic cable. The optical detection apparatus can further include a cryogenic cooler configured to maintain the temperature of a light-sensitive region of the SNSPD within a superconducting temperature range of the SNSPD. Downhole properties are measured based on detected optical signals received at the optical detection apparatus. Additional apparatus, systems, and methods are disclosed.
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5.发明授权公开(公告)号：US11015445B2
公开(公告)日：2021-05-25
申请号：US16326830
申请日：2016-10-03
发明人： Xinwei Lan , Yenny Natali Martinez , Michel Joseph LeBlanc , Neal Gregory Skinner , John L. Maida
IPC分类号： E21B47/12 , E21B49/08 , G01N27/414 , G01N27/416 , G01V8/10 , G01V8/12 , E21B47/135
摘要： A property of a downhole fluid, for example, a chemical species or ion concentration, may be accurately determined and logged based on measurements received from an optical detector where the optical detector is fed information or signals from an optical system coupled to one or more electrochemical probes calibrated for one or more properties of a fluid. The one or more electrochemical probes provide a potential to the optical system based, at least in part, on exposure to the downhole fluid. The optical system receives an optical signal from a light source that is transmitted via a transmission line, such as a fiber optic cable. Downhole information from the optical system is transmitted to the surface via the same or another transmission line. Thus, the signals are in the optical domain rather than the electrical domain. Multiple properties may be measured simultaneously using the same transmission line.
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公开(公告)号：US10934838B2
公开(公告)日：2021-03-02
申请号：US16302283
申请日：2016-08-26
IPC分类号： E21B47/135 , G01H9/00
摘要： In some embodiments, a method and apparatus, as well as an article, may operate to determine downhole properties based on detected optical signals. An optical detection system can include a fiber optic cable having a sensing location to generate a reflected measurement signal representative of measurement parameters. The optical detection system can further include a light source to transmit a measurement signal to cause the sensing location to provide the reflected measurement signal. The optical detection system can further include an optical detector comprising a single-photon detector (SPD) for detecting the reflected measurement signal received over the fiber optic cable. The optical detection system can further include a housing for enclosing the optical detector and to optically shield the optical detector, the housing including an aperture for passage of the fiber optic cable. Additional apparatuses, systems, and methods are disclosed.
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公开(公告)号：US10072496B2
公开(公告)日：2018-09-11
申请号：US15320675
申请日：2015-07-07
IPC分类号： E21B47/12
CPC分类号： E21B47/122 , E21B47/123
摘要： An example telemetry system for downhole operations in a subterranean formation comprises an electromagnetic (EM) radiation source and an EM radiation detector. A waveguide may be coupled to the EM radiation source and the EM radiation detector. A frequency multiplier may be coupled to the waveguide and positioned within a borehole in the subterranean formation.
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公开(公告)号：US09945979B2
公开(公告)日：2018-04-17
申请号：US14900819
申请日：2013-08-02
CPC分类号： G01V11/002 , E21B47/00 , E21B47/082 , E21B47/123 , E21B49/081 , G01S15/88
摘要： A system for recording metadata is disclosed. The system includes an acoustic vibration sensing system. The system also includes one or more sensors operable to measure characteristic parameters. The sensors are coupled to the acoustic vibration sensing system and include one or more channels for recording metadata. The system further includes one or more optical modulators. The optical modulators modulate a signal received from the one or more sensors and direct the modulated signal to the acoustic vibration sensing system. The system further includes one or more sources of the metadata coupled to the one or more optical modulators.
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9.发明授权公开(公告)号：US09557300B2
公开(公告)日：2017-01-31
申请号：US15026432
申请日：2014-11-12
发明人： Hua Xia , Yinghui Lu , Lizheng Zhang , John L. Maida
CPC分类号： G01N29/07 , E21B47/00 , G01M5/0033 , G01M5/0091 , G01N3/26 , G01N29/00 , G01N29/2418 , G01N2291/0231 , G01N2291/02491 , G01N2291/0258 , G01N2291/02827
摘要： Systems and methods for determining whether mechanical fatigue exists in a downhole cable using thermally-induced acoustic waves are disclosed herein. A cable fatigue monitoring system includes a thermal source, one or more light sources, one or more photodetector arrays, and a computing system comprising a processor, a memory, and a cable distortion module. The cable distortion module is operable to generate acoustic waves in a cable using the thermal source, direct light from the one or more light sources toward the cable, detect light from the one or more light sources transmitted past the cable at the one or more photodetector arrays, and determine, based on the detected light transmitted past the cable, whether a change in velocity of the acoustic waves has occurred in the cable.
摘要翻译： 本文公开了使用热感应声波来确定在井下电缆中是否存在机械疲劳的系统和方法。 电缆疲劳监测系统包括热源，一个或多个光源，一个或多个光电检测器阵列，以及包括处理器，存储器和电缆失真模块的计算系统。 电缆失真模块可操作以使用热源在电缆中产生声波，将来自一个或多个光源的光直接引向电缆，检测在一个或多个光电检测器处经过电缆传输的一个或多个光源的光 阵列，并且基于通过电缆传输的检测到的光确定在电缆中是否已经发生声波的速度变化。
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10.发明授权Distributed acoustic sensing systems and methods employing under-filled multi-mode optical fiber 有权分布式声学传感系统和采用欠充电多模光纤的方法公开(公告)号：US09429466B2
公开(公告)日：2016-08-30
申请号：US14068448
申请日：2013-10-31
发明人： David A. Barfoot , John L. Maida
摘要： An illustrative distributed acoustic sensing system includes a multi-mode optical fiber cable for distributed sensing and a distributed acoustic sensing interrogator coupled to the multi-mode optical fiber cable via a single mode optical fiber. The interrogator derives distributed acoustic measurements from Rayleigh backscattering light that is initiated with a substantially under-filled launch configuration that is designed to excite only the lowest-order modes of the multi-mode optical fiber. Mode conversion within the multi-mode optical fiber is anticipated to be negligible. For elastic scattering (i.e., Rayleigh scattering), it is further anticipated that the scattered light will be primarily returned in the incident propagation mode, thereby escaping the extraordinarily large coupling loss that would otherwise be expected from coupling a single-mode optical fiber to a multi-mode optical fiber for distributed sensing. Experiments with graded index multi-mode optical fiber have yielded positive results.
摘要翻译： 一种说明性的分布式声学感测系统包括用于分布式感测的多模光纤电缆和经由单模光纤耦合到多模光纤电缆的分布式声学传感询问器。 询问器从瑞利后向散射光导出分布式声学测量，该散射光以基本上欠填充的启动配置启动，该配置被设计为仅激发多模光纤的最低阶模式。 多模光纤内的模式转换预计可以忽略不计。 对于弹性散射（即瑞利散射），进一步预计散射光将以入射传播模式主要返回，从而避免了将单模光纤耦合到 用于分布式感测的多模光纤。 分级指数多模光纤的实验取得了积极成果。
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