公开(公告)号：US10386215B2

公开(公告)日：2019-08-20

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 ,  E21B47/10

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.

公开(公告)号：US09670759B2

公开(公告)日：2017-06-06

申请号：US14518798

申请日：2014-10-20

申请人： Erik N. Lee ,  William Johnston ,  Daniel Boyd Cooper

发明人： Erik N. Lee ,  William Johnston ,  Daniel Boyd Cooper

IPC分类号： E21B47/10 ,  E21B43/14

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.

公开(公告)号：US20160208794A1

公开(公告)日：2016-07-21

申请号：US14599622

申请日：2015-01-19

申请人： Gulshan Singh ,  Thomas Jaeger ,  Erik N. Lee

发明人： Gulshan Singh ,  Thomas Jaeger ,  Erik N. Lee

IPC分类号： F04B51/00

CPC分类号： F04B51/00 ,  F04B49/065 ,  F04B49/22 ,  F04B2201/0604 ,  F04B2201/0802

摘要： A method of monitoring and assessing valve conditions in a pump includes collecting data regarding timing of a pump piston and vibration of a pump fluid end, processing the data to form a filtered and transformed vibration signal, banding the vibration signal into high energy bands and low energy bands, and comparing a ratio of at least one high energy band to at least one low energy band of the vibration signal with at least one constant to determine valve condition.

摘要翻译： 监测和评估泵的条件的方法包括收集关于泵活塞的定时和泵流体端的振动的数据，处理数据以形成滤波和变换的振动信号，将振动信号分段为高能带和低 能带，并且将至少一个高能带与所述振动信号的至少一个低能带的比率与至少一个常数进行比较以确定阀状态。

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。

公开(公告)号：US20140262594A1

公开(公告)日：2014-09-18

申请号：US13803049

申请日：2013-03-14

申请人： Erik N. Lee

发明人： Erik N. Lee

IPC分类号： G01H13/00

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。 该方法包括将无源声学系统设置在钻孔中，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。

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

IPC分类号： E21B47/00 ,  E21B47/12 ,  E21B49/08 ,  G01S15/88 ,  E21B47/08

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.

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

IPC分类号： E21B47/14 ,  E21B49/00

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.

公开(公告)号：US20160084074A1

公开(公告)日：2016-03-24

申请号：US14492857

申请日：2014-09-22

申请人： Daniel Boyd Cooper ,  Erik N. Lee ,  Roger Glen Duncan

发明人： Daniel Boyd Cooper ,  Erik N. Lee ,  Roger Glen Duncan

IPC分类号： E21B47/09 ,  G01B11/00

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。

公开(公告)号：US20150198034A1

公开(公告)日：2015-07-16

申请号：US14156645

申请日：2014-01-16

申请人： Erik N. Lee

发明人： Erik N. Lee

IPC分类号： E21B49/00

CPC分类号： E21B47/18 ,  E21B47/14

摘要： A downhole acoustic sensing system includes a pulsator device configured and disposed to be arranged in a downhole environment, and a control system operatively connected to the pulsator device. The control system delivers at least one control input to the pulsator device to generate a sinusoidal acoustic signal.

摘要翻译： 井下声学传感系统包括配置和设置成布置在井下环境中的脉动器装置，以及可操作地连接到波轮装置的控制系统。 控制系统将至少一个控制输入传送到脉动器装置以产生正弦声信号。

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

IPC分类号： E21B49/00 ,  E21B47/14 ,  E21B43/12

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.