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    MULTIPLE POLARIZATION FIBER OPTIC TELEMETRY
    1.
    发明申请
    MULTIPLE POLARIZATION FIBER OPTIC TELEMETRY 审中-公开
    多极化光纤遥测

    公开(公告)号：WO2017099740A1

    公开(公告)日：2017-06-15

    申请号：PCT/US2015/064635

    申请日：2015-12-09

    Applicant: HALLIBURTON ENERGY SERVICES, INC.

    Inventor： STARK, Daniel, Joshua ,  BARFOOT, David, Andrew ,  ZHANG, Wei ,  AGGARWAL, Neerja

    IPC: E21B47/12 ,  E21B47/135

    CPC classification number: E21B47/12 ,  E21B47/123 ,  H04B10/2587 ,  H04B10/532 ,  H04B10/614

    Abstract: A downhole tool apparatus is disclosed that includes an input fiber optic cable coupled to an electro-optic modulator. The input fiber optic cable propagates first and second actively orthogonally polarized light beams. The electro-optic modulator modulates the first and second actively orthogonally polarized light beams in response to a measurement data stream (e.g., telemetry data). A single light beam comprising the modulated first and second actively orthogonally polarized light beams is propagated over an output fiber optic cable so that the modulated first and the second actively orthogonally polarized light beams propagate the same data through the output fiber optic cable. Recovery circuitry coupled to the single light beam is then used to detect, demodulate, and decode the original measurement data stream.

    Abstract translation: 公开了一种井下工具装置，其包括耦合到电光调制器的输入光纤电缆。 输入光缆传播第一和第二主动正交偏振光束。 电光调制器响应于测量数据流（例如，遥测数据）来调制第一和第二主动正交偏振光束。 包括调制的第一和第二有效正交偏振光束的单个光束在输出光纤电缆上传播，使得调制的第一和第二主动正交偏振光束通过输出光纤电缆传播相同的数据。 然后使用耦合到单个光束的恢复电路来检测，解调和解码原始测量数据流。

    DETECTION OF LOCATION OF CEMENT
    2.
    发明申请
    DETECTION OF LOCATION OF CEMENT 审中-公开

    公开(公告)号：WO2019066812A8

    公开(公告)日：2019-04-04

    申请号：PCT/US2017/053769

    申请日：2017-09-27

    Applicant: HALLIBURTON ENERGY SERVICES, INC.

    Inventor： PEARL, William, Cecil, Jr. ,  MAIDA, John, L. ,  STARK, Daniel, Joshua

    IPC: C09K8/46 ,  E21B33/13

    Abstract: Included are cement compositions and methods and systems for locating the cement compositions in a wellbore. An example method comprises deploying a sensing system in the wellbore and introducing the cement composition into the wellbore. The cement composition comprises a cement and hollow beads having a crush pressure and configured to emit an acoustic signal when imploded. The method further comprises pumping the cement composition through the wellbore to a depth with a wellbore pressure exceeding the crush pressure of the hollow beads to induce implosion of the hollow beads and the emission of the acoustic signal. The method further comprises sensing the emitted acoustic signal and determining the location of the cement composition in the wellbore from the sensed emitted acoustic signal.

    DOWNHOLE TELEMETRY SYSTEM
    4.
    发明申请
    DOWNHOLE TELEMETRY SYSTEM 审中-公开

    公开(公告)号：WO2018106232A1

    公开(公告)日：2018-06-14

    申请号：PCT/US2016/065415

    申请日：2016-12-07

    Applicant: HALLIBURTON ENERGY SERVICES, INC.

    Inventor： GAO, Li ,  RAVI, Krishna ,  TAWARE, Avinash ,  STARK, Daniel, Joshua

    IPC: E21B47/12 ,  E21B47/14

    Abstract: The disclosed embodiments include downhole telemetry systems and methods to obtain data indicative of wellbore properties. In one embodiment, a downhole telemetry system includes a plurality of sensor boxes, where each of the plurality of sensor boxes is deployed along a casing of a wellbore. Each sensor box is operable to obtain data indicative of at least one property of the wellbore and to transmit signals comprising data indicative of the at least one property of the wellbore. The downhole telemetry system also includes a downhole tool coupled to a conveyance and deployable in the wellbore. The downhole tool operable to transmit an activation signal to one or more sensor boxes of the plurality of sensor boxes to initiate communication with the one or more sensor boxes, and is also operable to receive signals comprising data indicative of the at least one property of the wellbore.

    TELEMETRY SYSTEM USING FREQUENCY COMBS
    5.
    发明申请
    TELEMETRY SYSTEM USING FREQUENCY COMBS 审中-公开
    使用频率梳状物的TELEMETRY系统

    公开(公告)号：WO2018067121A1

    公开(公告)日：2018-04-12

    申请号：PCT/US2016/055297

    申请日：2016-10-04

    Applicant: HALLIBURTON ENERGY SERVICES, INC.

    Inventor： STARK, Daniel, Joshua

    IPC: E21B47/12 ,  H04B10/25

    Abstract: A telemetry system is operable to transmit data by bridging the low signal bandwidth available to high temperature electronics with the high spectral bandwidth available in optical fiber. A transmitter, such as a frequency comb, generates light to a fiber and the light is demultiplexed to separate the light into separate wavelengths. Modulators encode downhole data onto each wavelength and a multiplexer recombines the wavelengths onto a single fiber that passes the light back to the surface where a second demultiplexer separates the light to be transmitted to distinct receivers that detect the encoded data. A dual fiber system may also be utilized. One or more commands may also be transmitted to the downhole tools by transmitted the encoded command to a coupler that is coupled to a multiplexer where a downhole receiver determines the downhole tool that should receive the associated command.

    Abstract translation: 遥测系统可操作以通过桥接可用于高温电子器件的低信号带宽与光纤中可用的高光谱带宽来传输数据。 诸如频率梳的发射器产生光到光纤，并且光被解复用以将光分成分离的波长。 调制器将井下数据编码到每个波长上，并且多路复用器将波长重新组合到单根光纤上，该单根光纤将光传回到表面，其中第二多路分用器将待传输的光分离到检测编码数据的不同接收器。 双光纤系统也可以使用。 一个或多个命令也可以通过将编码后的命令传送到耦合器耦合到多路复用器而发送到井下工具，其中，井下接收器确定将接收相关命令的井下工具。

    PROVIDING HIGH POWER OPTICAL PULSES OVER LONG DISTANCES
    6.
    发明申请
    PROVIDING HIGH POWER OPTICAL PULSES OVER LONG DISTANCES 审中-公开
    在长距离范围内提供高功率光学脉冲

    公开(公告)号：WO2017196317A1

    公开(公告)日：2017-11-16

    申请号：PCT/US2016/031834

    申请日：2016-05-11

    Applicant: HALLIBURTON ENERGY SERVICES, INC.

    Inventor： BHONGALE, Satyan, Gopal ,  STARK, Daniel, Joshua

    IPC: E21B47/12 ,  E21B47/135 ,  E21B41/00

    Abstract: The disclosed embodiments include a method and fiber optic cable to provide optical pulses for sensing, and an optical telemetry system. In one embodiment, the method includes sequentially transmitting a plurality of optical pulses through a first end of a first optical fiber disposed in a first section of a wellbore. The plurality of optical pulses is combined into a combined optical pulse at a distance from the first end of the first optical fiber. The method further includes transmitting the combined optical pulse through a second optical fiber disposed in a second section of the wellbore, and the second optical fiber includes a second dispersion value, where an absolute value of the first dispersion value is greater than an absolute value of the second dispersion value.

    Abstract translation: 所公开的实施例包括用于提供用于感测的光脉冲的方法和光缆以及光学遥测系统。 在一个实施例中，该方法包括通过布置在井筒的第一部分中的第一光纤的第一端顺序地发送多个光脉冲。 多个光脉冲在距第一光纤的第一端一定距离处组合成组合的光脉冲。 该方法还包括通过设置在井眼的第二部分中的第二光纤传输组合光脉冲，并且第二光纤包括第二色散值，其中第一色散值的绝对值大于绝对值 第二个分散值。

    FIXED-WAVELENGTH FIBER OPTIC TELEMETRY
    7.
    发明申请
    FIXED-WAVELENGTH FIBER OPTIC TELEMETRY 审中-公开
    固定波长光纤遥测

    公开(公告)号：WO2017151090A1

    公开(公告)日：2017-09-08

    申请号：PCT/US2016/020038

    申请日：2016-02-29

    Applicant: HALLIBURTON ENERGY SERVICES, INC.

    Inventor： VEERAVALLI MURALI, Srividhya ,  STARK, Daniel, Joshua ,  WONG, David, Yan Lap ,  WIECEK, Boguslaw

    IPC: E21B47/12 ,  E21B47/135 ,  E21B17/00

    Abstract: A system, in some embodiments, comprises: a light source; a fiber optic cable coupled to surface equipment and to downhole equipment and illuminated with fixed-wavelength light by said light source; and a modulator to modulate said fixed-wavelength light in the fiber optic cable to communicate data between the surface equipment and the downhole equipment, wherein the modulator uses a modified half-duplex telemetry scheme.

    Abstract translation: 在一些实施例中，系统包括：光源; 耦合到地面设备和井下设备并由所述光源用固定波长光照明的光缆; 以及调制器，用于调制光缆中的所述固定波长的光以在地面设备和井下设备之间传送数据，其中调制器使用修改的半双工遥测方案。

    PARTIALLY REFLECTIVE MATERIALS AND COATINGS FOR OPTICAL COMMUNICATION IN A WELLBORE
    8.
    发明申请
    PARTIALLY REFLECTIVE MATERIALS AND COATINGS FOR OPTICAL COMMUNICATION IN A WELLBORE 审中-公开
    部分反射材料和涂层在井眼中的光通信

    公开(公告)号：WO2016171670A1

    公开(公告)日：2016-10-27

    申请号：PCT/US2015/026853

    申请日：2015-04-21

    Applicant: HALLIBURTON ENERGY SERVICES, INC.

    Inventor： STARK, Daniel, Joshua ,  MAIDA, John, L. ,  BARFOOT, David, Andrew

    IPC: E21B47/12 ,  E21B47/01

    CPC classification number: E21B47/123 ,  E21B47/00 ,  E21B47/011 ,  G01N21/00 ,  G02B6/00 ,  H04B10/25

    Abstract: Methods and systems for the use of partially reflective materials and coatings for optical communications in a wellbore environment are provided. In one embodiment, methods for remote communication in a wellbore comprise: positioning an optical fiber in the wellbore, wherein at least a portion of the optical fiber comprises a partially reflective coating; transmitting an output optical signal from an optical source through the optical fiber; and receiving a reflected optical signal from the optical fiber at an optical detector, wherein at least one optical property of the reflected optical signal is indicative of a downhole condition.

    Abstract translation: 提供了在井眼环境中使用部分反射材料和光通信涂层的方法和系统。 在一个实施例中，用于井眼中的远程通信的方法包括：将光纤定位在井眼中，其中光纤的至少一部分包括部分反射涂层; 通过光纤传输来自光源的输出光信号; 以及在光学检测器处从光纤接收反射光信号，其中反射光信号的至少一个光学性质表示井下状况。

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