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公开(公告)号：US20150144333A1
公开(公告)日：2015-05-28
申请号：US14518798
申请日：2014-10-20
CPC分类号： E21B43/14 , E21B47/101
摘要： A method of monitoring fluid flow in a borehole includes measuring acoustics at a plurality of locations along a downhole assembly in a borehole and calculating a fluid flow rate at the plurality of locations along the downhole assembly based on measuring the acoustics at the plurality of locations.
摘要翻译： 监测钻孔中的流体流动的方法包括测量在钻孔中的井下组件的多个位置处的声学，并且基于测量多个位置处的声学来计算沿井下组件的多个位置处的流体流速。
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公开(公告)号：US20150082891A1
公开(公告)日：2015-03-26
申请号：US14464135
申请日：2014-08-20
申请人： Daniel Boyd Cooper , Erik N. Lee
发明人： Daniel Boyd Cooper , Erik N. Lee
IPC分类号： G01H9/00
CPC分类号： G01H9/004 , G01V2210/1429
摘要： A system and method for measuring the vibration of a structure of interest are disclosed. The disclosure provides an acoustic isolation structure to substantially reduce response to acoustic energy generated by external physical stimuli. The acoustic isolation structure is formed by placing a housing, such as an outer conduit, around an inner conduit, forming a gap between the housing and the inner conduit. The gap is then configured to serve as an acoustic isolation layer by either filling the gap with an acoustic isolation material or by substantially evacuating the gap and sealing the ends thereof.
摘要翻译： 公开了一种用于测量感兴趣的结构的振动的系统和方法。 本公开提供了一种声学隔离结构，以显着降低对由外部物理刺激产生的声能的响应。 声隔离结构通过将外壳（例如外导管）放置在内导管周围形成，在壳体和内导管之间形成间隙。 然后将间隙配置为通过用声隔离材料填充间隙或通过基本上排空间隙并密封其端部来用作声隔离层。
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公开(公告)号：US09739142B2
公开(公告)日：2017-08-22
申请号：US14459475
申请日：2014-08-14
申请人： Daniel Boyd Cooper , Erik N. Lee
发明人： Daniel Boyd Cooper , Erik N. Lee
CPC分类号： E21B47/123 , E21B47/00 , E21B47/0007 , E21B47/082 , E21B49/081 , G01S15/88
摘要： An apparatus for monitoring vibration of a downhole component includes an optical fiber sensor including at least one optical fiber operably connected to an interrogation unit. The at least one optical fiber has a resonant segment that is fixedly attached to the component via attachment points on the component, the resonant segment between the attachment points being separate from the component and having a resonant frequency based at least on the length of the resonant segment.
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公开(公告)号：US20160084074A1
公开(公告)日：2016-03-24
申请号：US14492857
申请日：2014-09-22
CPC分类号： E21B47/09 , E21B47/101 , E21B47/123 , G01B11/00
摘要： A downhole tool orientation determination system to determine a radial orientation of a tool conveyed downhole into a pipe via a carrier and a method of determining a radial orientation of a tool conveyed downhole into a pipe via a carrier are described. The system includes an orientation tool conveyed downhole by the carrier that conveys the tool, and a distributed acoustic sensor (DAS). The DAS includes an optical fiber disposed axially along an outer surface of the pipe; and a processor to determine an orientation of the orientation tool with respect to the optical fiber based on a measurement by the optical fiber at different rotational positions of the orientation tool. The processor determines the radial orientation of the tool with respect to the optical fiber based on the orientation of the orientation tool with respect to the optical fiber.
摘要翻译： 一种井下刀具取向确定系统，用于确定通过载体向井下输送到管道中的工具的径向定位，以及确定通过载体向井下进入管道的工具的径向定向的方法。 该系统包括由运送工具的载体井下传送的定向工具和分布式声传感器（DAS）。 DAS包括沿着管的外表面轴向设置的光纤; 以及处理器，其基于在所述定向工具的不同旋转位置处的所述光纤的测量来确定所述定向工具相对于所述光纤的取向。 处理器基于取向工具相对于光纤的取向来确定工具相对于光纤的径向取向。
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公开(公告)号：US09670759B2
公开(公告)日：2017-06-06
申请号：US14518798
申请日：2014-10-20
CPC分类号： E21B43/14 , E21B47/101
摘要： A method of monitoring fluid flow in a borehole includes measuring acoustics at a plurality of locations along a downhole assembly in a borehole and calculating a fluid flow rate at the plurality of locations along the downhole assembly based on measuring the acoustics at the plurality of locations.
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公开(公告)号：US20150075276A1
公开(公告)日：2015-03-19
申请号：US14459475
申请日：2014-08-14
申请人： Daniel Boyd Cooper , Erik N. Lee
发明人： Daniel Boyd Cooper , Erik N. Lee
IPC分类号： E21B47/12
CPC分类号： E21B47/123 , E21B47/00 , E21B47/0007 , E21B47/082 , E21B49/081 , G01S15/88
摘要： An apparatus for monitoring vibration of a downhole component includes an optical fiber sensor including at least one optical fiber operably connected to an interrogation unit. The at least one optical fiber has a resonant segment that is fixedly attached to the component via attachment points on the component, the resonant segment between the attachment points being separate from the component and having a resonant frequency based at least on the length of the resonant segment.
摘要翻译： 一种用于监测井下部件的振动的装置包括光纤传感器，其包括可操作地连接到询问单元的至少一根光纤。 所述至少一个光纤具有通过所述部件上的附接点固定地附接到所述部件的谐振段，所述附接点之间的谐振段与所述部件分离并且具有至少基于所述谐振器的长度的谐振频率 分割。
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公开(公告)号：US09279317B2
公开(公告)日：2016-03-08
申请号：US13803049
申请日：2013-03-14
申请人： Erik N. Lee
发明人： Erik N. Lee
CPC分类号： E21B47/00 , E21B47/10 , G01H13/00 , G01V2210/1429
摘要： A passive acoustic system and a method of utilizing the passive acoustic system in a subsurface borehole are discussed. The method includes disposing the passive acoustic system in the borehole, the passive acoustic system including at least one passive acoustic resonator, and monitoring a frequency of an acoustic signal at the at least one passive acoustic resonator. The passive acoustic system includes a protective tubing, a fiber optic cable disposed within the protective tubing, a fluid layer between the fiber optic cable and the protective tubing, and at least one passive acoustic resonator, the at least one passive acoustic resonator representing an area within the protective tubing having a known geometry, wherein the fluid layer affects a frequency of an acoustic signal obtained from the at least one passive acoustic resonator.
摘要翻译： 讨论了一种被动声学系统和一种在地下钻孔中利用无源声学系统的方法。 所述方法包括将无源声学系统布置在钻孔中，所述无源声学系统包括至少一个无源声谐振器，以及监测所述至少一个无源声谐振器处的声信号的频率。 被动声学系统包括保护管，布置在保护管内的光纤电缆，光缆和保护管之间的流体层，以及至少一个无源声共振器，所述至少一个无源声谐振器代表区域 在具有已知几何形状的保护管内，其中流体层影响从至少一个无源声谐振器获得的声信号的频率。
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公开(公告)号：US10202845B2
公开(公告)日：2019-02-12
申请号：US15355337
申请日：2016-11-18
申请人： Erik N. Lee , Jesse J. Howard
发明人： Erik N. Lee , Jesse J. Howard
摘要： A system includes a distributed acoustic sensing (DAS) optical fiber configured to be disposed with a downhole component, an interrogation device including an optical signal source configured to inject an optical signal into the DAS optical fiber and a receiver configured to detect return signals reflected from sensing locations in the fiber, and an acoustic telemetry unit configured to receive a communication from the downhole component and generate an acoustic signal having a frequency within a selected frequency range and encoded to carry the communication, the acoustic signal applied to a first section of the DAS optical fiber. The system also includes a processor configured to associate a first portion of the return signals with the first section and reproduce the communication based on the first portion, and associate a second portion of the return signals with a second section of the fiber and detect one or more acoustic events.
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公开(公告)号：US20150075292A1
公开(公告)日：2015-03-19
申请号：US14328137
申请日：2014-07-10
申请人： Erik N. Lee
发明人： Erik N. Lee
IPC分类号： G01F1/66
CPC分类号： G01F1/66 , E21B47/101
摘要： A method of monitoring acoustic energy using distributed acoustic sensing. The method involves supplying a fluid flow at different pressures and sensing fluid flow characteristics in at least one location at each pressure. The data may be processed to provide a fluid resistance value related to a particular fluid flow at each location, collectively forming a fluid resistance index (FRI). The method may include following the initial fluid flow with a process flow, which may then be followed by another fluid flow. The flow characteristics of the latter fluid flow may be measured and compared with the initial fluid flow, providing a measure of the success of the process flow. In application, this method may be used to enhance downhole operations, including acid stimulation treatments.
摘要翻译： 使用分布式声学传感监测声能的方法。 该方法包括在不同压力下提供流体流并在每个压力下在至少一个位置感测流体流动特性。 可以处理数据以提供与每个位置处的特定流体流相关的流体阻力值，共同形成流体阻力指数（FRI）。 该方法可以包括随着具有工艺流程的初始流体流动，然后可以跟随另一流体流动。 可以测量后一流体流的流动特性并将其与初始流体流相比较，以提供工艺流程成功的量度。 在应用中，该方法可用于增强井下作业，包括酸刺激处理。
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公开(公告)号：US20170167249A1
公开(公告)日：2017-06-15
申请号：US15355337
申请日：2016-11-18
申请人： Erik N. Lee , Jesse J. Howard
发明人： Erik N. Lee , Jesse J. Howard
CPC分类号： E21B47/14 , E21B43/128 , E21B49/00
摘要： A system includes a distributed acoustic sensing (DAS) optical fiber configured to be disposed with a downhole component, an interrogation device including an optical signal source configured to inject an optical signal into the DAS optical fiber and a receiver configured to detect return signals reflected from sensing locations in the fiber, and an acoustic telemetry unit configured to receive a communication from the downhole component and generate an acoustic signal having a frequency within a selected frequency range and encoded to carry the communication, the acoustic signal applied to a first section of the DAS optical fiber. The system also includes a processor configured to associate a first portion of the return signals with the first section and reproduce the communication based on the first portion, and associate a second portion of the return signals with a second section of the fiber and detect one or more acoustic events.
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