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1. 发明授权

US10161811B2 Distributed temperature sensor enhancement by stimulated Raman suppression 有权
公开(公告)号：US10161811B2
公开(公告)日：2018-12-25
申请号：US14664222
申请日：2015-03-20
申请人： Ian Mitchell , William Johnston , Ashwin Chandran
发明人： Ian Mitchell , William Johnston , Ashwin Chandran
IPC分类号： G01K11/32
摘要： A distributed temperature sensor and a method of determining temperature are described. The distributed temperature sensor includes an optical fiber to filter or remove Stokes Raman scatter and prevent stimulated Raman scatter and a light source to inject light into the optical fiber. The distributed temperature sensor also includes a photodetector to detect light energy resulting from the light injected into the optical fiber, the light energy including anti-Stokes Raman scatter and Rayleigh scatter; and a processor to determine temperature based on a ratio of the anti-Stokes Raman scatter and the Rayleigh scatter.

2. 发明申请

US20190234210A1 SYSTEM AND METHOD FOR DOWNHOLE INORGANIC SCALE MONITORING AND INTERVENTION IN A PRODUCTION WELL 审中-公开
公开(公告)号：US20190234210A1
公开(公告)日：2019-08-01
申请号：US16381786
申请日：2019-04-11
申请人： Aurelie Duchene , Alessandro De Barros , Hartley Downs , Eduardo Motta , Potiani Maciel , Ashwin Chandran , Thomas Scott , Rocco DiFoggio , Tudor Ionescu , Eric Donzier
发明人： Aurelie Duchene , Alessandro De Barros , Hartley Downs , Eduardo Motta , Potiani Maciel , Ashwin Chandran , Thomas Scott , Rocco DiFoggio , Tudor Ionescu , Eric Donzier
IPC分类号： E21B49/08 , E21B37/06 , E21B47/06
CPC分类号： E21B49/088 , E21B37/06 , E21B47/06 , E21B47/065 , E21B49/081 , E21B2049/085
摘要： An apparatus for estimating an ambient environment at which inorganic scale will form in a downhole fluid includes a stress chamber disposed in a borehole in a production zone at a location within a specified range of maximum pressure and configured to receive a sample of the fluid from the production zone and to apply an ambient condition to the sample that causes the formation of inorganic scale. An inorganic scale sensor is configured to sense formation of inorganic scale within the chamber and an ambient environment sensor is configured to sense an ambient environment within the chamber at which the formation of inorganic scale occurs. The apparatus further includes a processor configured to receive measurement data from the inorganic scale sensor and the ambient environment sensor and to identify the ambient environment at which the formation of inorganic scale occurs.

3. 发明授权

US10323513B2 System and method for downhole organic scale monitoring and intervention in a production well 有权
公开(公告)号：US10323513B2
公开(公告)日：2019-06-18
申请号：US14807738
申请日：2015-07-23
申请人： Geiza Esperandio de Oliveira , Hartley Downs , Aurelie Duchene , Eduardo Motta , Potiani Maciel , Ashwin Chandran , Thomas Scott , Rocco DiFoggio , Tudor Ionescu , Eric Donzier
发明人： Geiza Esperandio de Oliveira , Hartley Downs , Aurelie Duchene , Eduardo Motta , Potiani Maciel , Ashwin Chandran , Thomas Scott , Rocco DiFoggio , Tudor Ionescu , Eric Donzier
IPC分类号： E21B49/08 , E21B37/06
摘要： An apparatus for estimating an ambient environment at which organic scale will form in a downhole fluid includes a stress chamber disposed in a borehole in a production zone at a location of maximum pressure and configured to receive a sample of the fluid from the production zone and to apply an ambient condition to the sample that causes the formation of organic scale. A sensor is configured to sense formation of organic scale within the chamber and an ambient environment sensor is configured to sense an ambient environment within the chamber at which the formation of organic scale occurs. The apparatus further includes a processor configured to receive measurement data from the organic scaling sensor and the ambient environment sensor and to identify the ambient environment at which the formation of organic scale occurs using the organic scaling sensor measurement data and ambient environment sensor measurement data.

4. 发明授权

US09989425B2 Attenuation correction for distrbuted temperature sensors using antistokes to rayleigh ratio 有权
公开(公告)号：US09989425B2
公开(公告)日：2018-06-05
申请号：US14664254
申请日：2015-03-20
申请人： Ian Mitchell , William Johnston , Ashwin Chandran
发明人： Ian Mitchell , William Johnston , Ashwin Chandran
IPC分类号： G01K11/32 , E21B47/12 , E21B47/06
CPC分类号： G01K11/32 , E21B47/065 , E21B47/123 , G01K2011/324
摘要： A distributed temperature sensor, a method of determining temperature, and a processing system to compute temperature are described. The sensor includes an optical fiber disposed in an area where temperature is to be measured, a primary light source to inject light into the optical fiber, and a secondary light source to inject light into the optical fiber. The sensor additionally includes a photodetector to detect backscatter light energy from the optical fiber the backscatter light energy including Stokes Raman scatter or anti-Stokes Raman scatter and primary Rayleigh scatter resulting from the primary light source and secondary Rayleigh scatter resulting from the secondary light source, and a processor to determine temperature based on a ratio of the Stokes Raman scatter or the anti-Stokes Raman scatter and a combination of the primary Rayleigh scatter and the secondary Rayleigh scatter.

5. 发明授权

US09488531B2 Loss compensation for distributed sensing in downhole environments 有权
标题翻译：井下环境中分布式传感损失补偿
公开(公告)号：US09488531B2
公开(公告)日：2016-11-08
申请号：US14011067
申请日：2013-08-27
申请人： Paul F. Wysocki , Christopher H. Lambert , Ashwin Chandran
发明人： Paul F. Wysocki , Christopher H. Lambert , Ashwin Chandran
IPC分类号： G01K11/32 , E21B47/12 , G01J5/08 , G02B6/44 , G01D5/353
CPC分类号： G01K11/32 , E21B47/123 , G01D5/353 , G01D5/35303 , G01J5/0821 , G01K2011/324 , G02B6/4492
摘要： An apparatus for estimating a parameter includes: an optical fiber sensor including at least one optical fiber configured to be disposed in a downhole location and including at least one sensing location configured to generate measurement signals; at least one light source configured to transmit a measurement signal having a wavelength to interrogate a sensing location and cause the sensing location to return a reflected measurement signal indicative of a measured parameter, and configured to transmit a reference signal and cause a reflected reference signal to be returned from a location associated with the sensing location, the reflected reference signal having a known relationship to hydrogen concentration; and a processor configured to receive the reflected measurement signal and the reflected reference signal, estimate the hydrogen concentration based on the reflected reference signal, and calibrate the first reflected signal based on the estimated hydrogen concentration.
摘要翻译：一种用于估计参数的装置包括：光纤传感器，包括至少一个光纤，其被配置为设置在井下位置并且包括被配置为产生测量信号的至少一个感测位置; 至少一个光源被配置为传送具有波长的测量信号以询问感测位置，并使感测位置返回指示测量参数的反射测量信号，并且被配置为发送参考信号并使反射的参考信号从与感测位置相关联的位置返回，反射参考信号与氢浓度具有已知关系; 以及处理器，被配置为接收反射的测量信号和反射的参考信号，基于反射的参考信号估计氢浓度，并且基于估计的氢浓度来校准第一反射信号。

6. 发明申请

US20160024915A1 SYSTEM AND METHOD FOR DOWNHOLE INORGANIC SCALE MONITORING AND INTERVENTION IN A PRODUCTION WELL 审中-公开
标题翻译：用于井下无机尺度监测和生产干预的系统和方法
公开(公告)号：US20160024915A1
公开(公告)日：2016-01-28
申请号：US14807287
申请日：2015-07-23
申请人： Aurelie Duchene , Alessandro De Barros , Hartley Downs , Eduardo Motta , Potiani Maciel , Ashwin Chandran , Thomas Scott , Rocco DiFoggio , Tudor Ionescu , Eric Donzier
发明人： Aurelie Duchene , Alessandro De Barros , Hartley Downs , Eduardo Motta , Potiani Maciel , Ashwin Chandran , Thomas Scott , Rocco DiFoggio , Tudor Ionescu , Eric Donzier
IPC分类号： E21B49/08 , E21B47/06
CPC分类号： E21B49/088 , E21B37/06 , E21B47/06 , E21B47/065 , E21B49/081 , E21B2049/085
摘要： An apparatus for estimating an ambient environment at which inorganic scale will form in a downhole fluid includes a stress chamber disposed in a borehole in a production zone at a location within a specified range of maximum pressure and configured to receive a sample of the fluid from the production zone and to apply an ambient condition to the sample that causes the formation of inorganic scale. An inorganic scale sensor is configured to sense formation of inorganic scale within the chamber and an ambient environment sensor is configured to sense an ambient environment within the chamber at which the formation of inorganic scale occurs. The apparatus further includes a processor configured to receive measurement data from the inorganic scale sensor and the ambient environment sensor and to identify the ambient environment at which the formation of inorganic scale occurs.
摘要翻译：一种用于估计在井下流体中将形成无机垢的周围环境的装置包括：应力室，其设置在生产区的钻孔中，位于指定的最大压力范围内的位置，并且构造成用于接收来自生产区域，并对造成无机垢形成的样品施加环境条件。无机垢传感器被配置为感测室内的无机垢的形成，并且环境环境传感器被配置为感测在室内形成无机垢的周围环境。该装置还包括处理器，其被配置为从无机标度传感器和周围环境传感器接收测量数据，并且识别发生无机垢的形成的周围环境。

7. 发明申请

US20150063418A1 LOSS COMPENSATION FOR DISTRIBUTED SENSING IN DOWNHOLE ENVIRONMENTS 有权
标题翻译：水下环境中分布式感测的损失补偿
公开(公告)号：US20150063418A1
公开(公告)日：2015-03-05
申请号：US14011067
申请日：2013-08-27
申请人： Paul F. Wysocki , Christopher H. Lambert , Ashwin Chandran
发明人： Paul F. Wysocki , Christopher H. Lambert , Ashwin Chandran
IPC分类号： G01K11/32
CPC分类号： G01K11/32 , E21B47/123 , G01D5/353 , G01D5/35303 , G01J5/0821 , G01K2011/324 , G02B6/4492
摘要： An apparatus for estimating a parameter includes: an optical fiber sensor including at least one optical fiber configured to be disposed in a downhole location and including at least one sensing location configured to generate measurement signals; at least one light source configured to transmit a measurement signal having a wavelength to interrogate a sensing location and cause the sensing location to return a reflected measurement signal indicative of a measured parameter, and configured to transmit a reference signal and cause a reflected reference signal to be returned from a location associated with the sensing location, the reflected reference signal having a known relationship to hydrogen concentration; and a processor configured to receive the reflected measurement signal and the reflected reference signal, estimate the hydrogen concentration based on the reflected reference signal, and calibrate the first reflected signal based on the estimated hydrogen concentration.
摘要翻译：一种用于估计参数的装置包括：光纤传感器，包括至少一个光纤，其被配置为设置在井下位置并且包括被配置为产生测量信号的至少一个感测位置; 至少一个光源被配置为传送具有波长的测量信号以询问感测位置，并使感测位置返回指示测量参数的反射测量信号，并且被配置为发送参考信号并使反射的参考信号从与感测位置相关联的位置返回，反射参考信号与氢浓度具有已知关系; 以及处理器，被配置为接收反射的测量信号和反射的参考信号，基于反射的参考信号估计氢浓度，并且基于估计的氢浓度来校准第一反射信号。

8. 发明授权

US10323512B2 System and method for downhole inorganic scale monitoring and intervention in a production well 有权
公开(公告)号：US10323512B2
公开(公告)日：2019-06-18
申请号：US14807287
申请日：2015-07-23
申请人： Aurelie Duchene , Alessandro De Barros , Hartley Downs , Eduardo Motta , Potiani Maciel , Ashwin Chandran , Thomas Scott , Rocco DiFoggio , Tudor Ionescu , Eric Donzier
发明人： Aurelie Duchene , Alessandro De Barros , Hartley Downs , Eduardo Motta , Potiani Maciel , Ashwin Chandran , Thomas Scott , Rocco DiFoggio , Tudor Ionescu , Eric Donzier
IPC分类号： E21B49/08 , E21B37/06 , E21B47/06
摘要： An apparatus for estimating an ambient environment at which inorganic scale will form in a downhole fluid includes a stress chamber disposed in a borehole in a production zone at a location within a specified range of maximum pressure and configured to receive a sample of the fluid from the production zone and to apply an ambient condition to the sample that causes the formation of inorganic scale. An inorganic scale sensor is configured to sense formation of inorganic scale within the chamber and an ambient environment sensor is configured to sense an ambient environment within the chamber at which the formation of inorganic scale occurs. The apparatus further includes a processor configured to receive measurement data from the inorganic scale sensor and the ambient environment sensor and to identify the ambient environment at which the formation of inorganic scale occurs.

9. 发明申请

US20160024916A1 SYSTEM AND METHOD FOR DOWNHOLE ORGANIC SCALE MONITORING AND INTERVENTION IN A PRODUCTION WELL 审中-公开
标题翻译：用于井下有机规模监测和生产干预的系统和方法
公开(公告)号：US20160024916A1
公开(公告)日：2016-01-28
申请号：US14807738
申请日：2015-07-23
申请人： Geiza Esperandio de Oliveira , Hartley Downs , Aurelie Duchene , Eduardo Motta , Potiani Maciel , Ashwin Chandran , Thomas Scott , Rocco DiFoggio , Tudor Ionescu , Eric Donzier
发明人： Geiza Esperandio de Oliveira , Hartley Downs , Aurelie Duchene , Eduardo Motta , Potiani Maciel , Ashwin Chandran , Thomas Scott , Rocco DiFoggio , Tudor Ionescu , Eric Donzier
IPC分类号： E21B49/08 , E21B37/06
CPC分类号： E21B49/088 , E21B37/06 , E21B49/081 , E21B2049/085
摘要： An apparatus for estimating an ambient environment at which organic scale will form in a downhole fluid includes a stress chamber disposed in a borehole in a production zone at a location of maximum pressure and configured to receive a sample of the fluid from the production zone and to apply an ambient condition to the sample that causes the formation of organic scale. A sensor is configured to sense formation of organic scale within the chamber and an ambient environment sensor is configured to sense an ambient environment within the chamber at which the formation of organic scale occurs. The apparatus further includes a processor configured to receive measurement data from the organic scaling sensor and the ambient environment sensor and to identify the ambient environment at which the formation of organic scale occurs using the organic scaling sensor measurement data and ambient environment sensor measurement data.
摘要翻译：一种用于估计在井下流体中形成有机刻度的周围环境的装置包括设置在最大压力位置处的生产区中的钻孔中的应力室，并且构造成用于接收来自生产区的流体样本，将环境条件施加到导致形成有机垢的样品。传感器被配置为感测室内的有机刻度的形成，并且环境环境传感器被配置为感测在室内形成有机刻度的周围环境。该装置还包括处理器，其被配置为从有机缩放传感器和环境环境传感器接收测量数据，并且使用有机缩放传感器测量数据和周围环境传感器测量数据来识别形成有机刻度的周围环境。

10. 发明申请

US20150300891A1 ATTENUATION CORRECTION FOR DISTRIBUTED TEMPERATURE SENSORS USING ANTISTOKES TO RAYLEIGH RATIO 有权
标题翻译：分布式温度传感器的衰减校正使用抗噪声比
公开(公告)号：US20150300891A1
公开(公告)日：2015-10-22
申请号：US14664254
申请日：2015-03-20
申请人： Ian Mitchell , William Johnston , Ashwin Chandran
发明人： Ian Mitchell , William Johnston , Ashwin Chandran
IPC分类号： G01K11/32 , G01V8/10
CPC分类号： G01K11/32 , E21B47/065 , E21B47/123 , G01K2011/324
摘要： A distributed temperature sensor, a method of determining temperature, and a processing system to compute temperature are described. The sensor includes an optical fiber disposed in an area where temperature is to be measured, a primary light source to inject light into the optical fiber, and a secondary light source to inject light into the optical fiber. The sensor additionally includes a photodetector to detect backscatter light energy from the optical fiber the backscatter light energy including Stokes Raman scatter or anti-Stokes Raman scatter and primary Rayleigh scatter resulting from the primary light source and secondary Rayleigh scatter resulting from the secondary light source, and a processor to determine temperature based on a ratio of the Stokes Raman scatter or the anti-Stokes Raman scatter and a combination of the primary Rayleigh scatter and the secondary Rayleigh scatter.
摘要翻译：描述分布式温度传感器，温度测定方法和计算温度的处理系统。传感器包括设置在要测量温度的区域中的光纤，将光注入到光纤中的初级光源和将光注入到光纤中的次级光源。传感器还包括一个光电检测器，用于检测来自光纤的反向散射光能量，包括斯托克斯拉曼散射或反斯托克斯拉曼散射的反向散射光能和由主光源产生的初级瑞利散射和由次级光源产生的次级瑞利散射，以及基于斯托克斯拉曼散射或反斯托克斯拉曼散射的比率以及主瑞利散射和次瑞利散射的组合来确定温度的处理器。

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