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    Fiber optic magneto-responsive sensor assembly
    1.
    发明授权
    Fiber optic magneto-responsive sensor assembly 有权

    公开(公告)号：US10809413B2

    公开(公告)日：2020-10-20

    申请号：US15507292

    申请日：2014-08-29

    申请人： SCHLUMBERGER TECHNOLOGY CORPORATION

    发明人： Dominic Brady ,  Arthur H. Hartog

    IPC分类号： G01V3/18 ,  G01V3/38 ,  G01V3/10 ,  E21B47/09 ,  E21B47/092 ,  E21B47/135 ,  E21B49/00 ,  G01V3/28

    摘要： A sensor assembly for passive detections of downhole well features. Embodiments include a casing collar locator assembly that utilizes fiber optics in combination with a magneto-responsive sensor to detect casing collars and provide real-time location information in a well. The sensor may be configured to work with a poled monolithic structure that is dimensionally responsive to voltage in a way that substantially eliminates noise during detections. Additionally, the sensor may be intentionally imbalanced, utilizing multiple fibers of different lengths and multiple wavelength monitoring so as to provide enhanced directional information as well as allow operators to decipher and address circumstances of polarization fade.

    Method Of Borehole Seismic Surveying Using An Optical Fiber
    4.
    发明申请
    Method Of Borehole Seismic Surveying Using An Optical Fiber 有权
    使用光纤的井眼地震测量方法

    公开(公告)号：US20140347957A1

    公开(公告)日：2014-11-27

    申请号：US13900372

    申请日：2013-05-22

    申请人： Schlumberger Technology Corporation

    发明人： Arthur H. Hartog ,  Bernard Frignet ,  Duncan Mackie ,  Michael Clark

    IPC分类号： G01V1/40 ,  G01V1/44 ,  G01V1/42

    CPC分类号： G01V1/40 ,  G01H9/004 ,  G01V1/20 ,  G01V1/42 ,  G01V1/44 ,  G01V2210/1429

    摘要： A method of detecting seismic waves traveling through a subsurface formation includes lowering a cable into a borehole in the subsurface formation, the cable having at least one optical fiber associated therewith, and causing descent of a remote end of the cable to be arrested. The method further includes feeding a further length of the cable into the borehole such that the cable is slack and in contact with at least part of a wall of the borehole, and using an interrogator coupled to the at least one optical fiber to detect seismic waves traveling through the subsurface formation and into the cable.

    摘要翻译： 检测通过地下地层运动的地震波的方法包括将电缆降低到地下地层中的钻孔中，所述缆线具有与其相关联的至少一根光纤，并且使电缆的远端下降。 该方法还包括将电缆的另一长度馈送到钻孔中，使得电缆松弛并与钻孔的壁的至少一部分接触，并且使用耦合到至少一根光纤的询问器来检测地震波 穿过地下地层并进入电缆。

    Non-linear interactions with backscattered light
    5.
    发明授权
    Non-linear interactions with backscattered light 有权

    公开(公告)号：US10359302B2

    公开(公告)日：2019-07-23

    申请号：US15380382

    申请日：2016-12-15

    申请人： Schlumberger Technology Corporation

    发明人： Arthur H. Hartog ,  Florian Englich

    IPC分类号： G01D5/353 ,  G01H9/00

    摘要： Using hDVS techniques to detect a disturbance in a coherent Rayleigh backscatter caused by the presence of another optical signal in the fiber. The interaction can be caused by a pump pulse travelling shortly after a probe pulse and at a frequency close to that of the probe plus or minus a Brillouin frequency shift. This results in gain or attenuation of the backscatter signal. The Brillouin shift is a function of temperature and strain.

    SEISMIC ACQUISITION SYSTEM INCLUDING A DISTRIBUTED SENSOR HAVING AN OPTICAL FIBER
    9.
    发明申请
    SEISMIC ACQUISITION SYSTEM INCLUDING A DISTRIBUTED SENSOR HAVING AN OPTICAL FIBER 审中-公开
    含有光纤的分布式传感器的地震采集系统

    公开(公告)号：US20150076334A1

    公开(公告)日：2015-03-19

    申请号：US14550251

    申请日：2014-11-21

    申请人： Schlumberger Technology Corporation

    发明人： Ed Kragh ,  Everhard Muyzert ,  Johan Robertsson ,  Douglas E. Miller ,  Arthur H. Hartog

    IPC分类号： G01V1/36 ,  G01V8/00

    CPC分类号： G01V1/003 ,  E21B47/02208 ,  E21B49/087 ,  G01D5/35358 ,  G01H9/004 ,  G01V1/00 ,  G01V1/36 ,  G01V1/3808 ,  G01V8/00

    摘要： A seismic acquisition system includes a distributed optical sensor (having an optical fiber) and an interrogation subsystem configured to generate a light signal to emit into the optical fiber. The interrogation subsystem receives, from the distributed optical sensor, backscattered light responsive to the emitted light signal, wherein the backscattered light is affected by one or both of seismic signals reflected from a subterranean structure and noise. Output data corresponding to the backscattered light is provided to a processing subsystem to determine a characteristic of the subterranean structure.

    摘要翻译： 地震采集系统包括分布式光学传感器（具有光纤）和被配置为产生发射到光纤中的光信号的询问子系统。 询问子系统从分布式光学传感器接收响应于发出的光信号的反向散射光，其中后向散射光受到从地下结构和噪声反射的地震信号中的一个或两个的影响。 与后向散射光对应的输出数据被提供给处理子系统以确定地下结构的特征。

    Optical Fiber Well Deployment for Seismic Surveying
    10.
    发明申请
    Optical Fiber Well Deployment for Seismic Surveying 有权
    用于地震测量的光纤井部署

    公开(公告)号：US20140376332A1

    公开(公告)日：2014-12-25

    申请号：US14370487

    申请日：2013-01-04

    申请人： Schlumberger Technology Corporation ,  Services Petroliers Schlumberger ,  Schlumberger Holdings Limited

    发明人： Pierre Vigneaux ,  Arthur H. Hartog ,  Bernard Frignet

    IPC分类号： G01V1/18

    CPC分类号： G01V1/18 ,  G01H9/004 ,  G01V1/16 ,  G01V1/226 ,  G01V1/40 ,  G01V1/42

    摘要： Disclosed are a system, apparatus, and method for optical fiber well deployment in seismic optical surveying. Embodiments of this disclosure may include methods of deploying a spooled optical fiber distributed sensor into the wellbore integrated in a ballast or weight for a seismic optic tool, to achieve deployment of a lightweight disposable fiber optic cable against the wellbore walls via gravity. The method may further include unspooling the spooled optical fiber distributed sensor and using the optical fiber as a distributed seismic receiver. Once the fiber optic distributed sensor is deployed according to methods of the present disclosure, surveys may be obtained and processed by various methods.

    摘要翻译： 公开了用于地震光学测量中光纤井部署的系统，装置和方法。 本公开的实施例可以包括将卷绕的光纤分布式传感器部署到集成在用于地震光学工具的镇流器或重量中的井眼中的方法，以通过重力实现轻量级的一次性光纤电缆抵靠井眼壁的部署。 该方法还可以包括使假脱机的光纤分布式传感器脱模并使用该光纤作为分布式地震接收机。 一旦根据本公开的方法部署光纤分布式传感器，可以通过各种方法获得并处理勘测。