公开(公告)号：US20130093599A1

公开(公告)日：2013-04-18

申请号：US13271968

申请日：2011-10-12

申请人： Roger Glen Duncan ,  Brooks A. Childers ,  Philip Robin Couch

发明人： Roger Glen Duncan ,  Brooks A. Childers ,  Philip Robin Couch

IPC分类号： G01V3/12

CPC分类号： G01N21/954

摘要： A method for estimating a parameter includes: transmitting a control signal to a coherent optical source, the control signal configured to chaotically vary an output of the optical source and generate a chaotically excited optical signal; transmitting the optical signal from the optical source into an optical fiber, the optical fiber including at least one sensing location; receiving a reflected signal including light reflected from the at least one sensing location; and estimating a value of the parameter using the reflected signal.

摘要翻译： 一种用于估计参数的方法包括：将控制信号发送到相干光源，所述控制信号被配置为混沌地改变光源的输出并产生混沌激励的光信号; 将所述光信号从所述光源传输到光纤中，所述光纤包括至少一个感测位置; 接收包括从所述至少一个感测位置反射的光的反射信号; 以及使用所述反射信号估计所述参数的值。

公开(公告)号：US20120314988A1

公开(公告)日：2012-12-13

申请号：US13589653

申请日：2012-08-20

申请人： Brooks A. Childers ,  Daniel S. Homa

发明人： Brooks A. Childers ,  Daniel S. Homa

IPC分类号： G01N21/84 ,  G02B6/10

CPC分类号： E21B47/0006 ,  G01L1/246 ,  G02B6/022

摘要： An apparatus for estimating a shape, the apparatus including: an optical fiber configured to conform to the shape and having a first core offset from a centerline of the optical fiber, the first core having an optical characteristic configured to change due to a change in shape of the optical fiber wherein a change in the optical characteristic is used to estimate the shape. A method for estimating a shape is also disclosed.

摘要翻译： 一种用于估计形状的装置，所述装置包括：光纤，被配置为符合形状并具有偏离光纤的中心线的第一芯，所述第一芯具有被配置为由于形状变化而改变的光学特性 其中使用光学特性的变化来估计形状。 还公开了一种用于估计形状的方法。

公开(公告)号：US20120200422A1

公开(公告)日：2012-08-09

申请号：US13023945

申请日：2011-02-09

申请人： Roger Glen Duncan ,  Brooks A. Childers

发明人： Roger Glen Duncan ,  Brooks A. Childers

IPC分类号： G01V3/00

CPC分类号： G01V8/02

摘要： A method and apparatus for obtaining a parameter of interest from an optical device placed along a fiber optic cable in a wellbore is disclosed. Light is propagated a light through the fiber optic cable from a light source. A first detector receives a first signal responsive to interaction of the propagated light and the optical device, wherein the first signal has a delay. A second detector receives a second signal and a digital delay device delays the received second signal. A sampling device obtains a selected signal from the first signal using the delayed second signal, and a processor determines the parameter of interest using the selected signal.

摘要翻译： 公开了一种用于从沿着光纤电缆放置在井眼中的光学装置获得感兴趣参数的方法和装置。 光从光源传播通过光纤电缆的光。 第一检测器响应于传播的光和光学装置的相互作用而接收第一信号，其中第一信号具有延迟。 第二检测器接收第二信号，并且数字延迟装置延迟所接收的第二信号。 采样装置使用延迟的第二信号从第一信号获得所选择的信号，并且处理器使用所选择的信号来确定感兴趣的参数。

公开(公告)号：US20120143525A1

公开(公告)日：2012-06-07

申请号：US12960140

申请日：2010-12-03

申请人： Jianfeng Chen ,  Xudong Yang ,  Brian L. Thigpen ,  Brooks A. Childers

发明人： Jianfeng Chen ,  Xudong Yang ,  Brian L. Thigpen ,  Brooks A. Childers

IPC分类号： G06F19/00 ,  G01L1/00

CPC分类号： G01L1/246 ,  G01M5/0025

摘要： A method, apparatus and computer-readable medium for determining a deformation strain distribution of a member corresponding to a selected deformation mode is disclosed. Strain measurements are obtained at a plurality of sensors, wherein each strain measurement is related to a strain at a location of the member. A component of the strain related to a selected deformation mode for the obtained strain measurements is determined and a principal strain component and a secondary strain component for each of the determined components of the strain is determined. The determined principal strain component and secondary strain component are mapped to a surface of the member to determine the deformation strain distribution.

摘要翻译： 公开了一种用于确定与所选择的变形模式对应的构件的变形应变分布的方法，装置和计算机可读介质。 在多个传感器处获得应变测量，其中每个应变测量与构件位置处的应变有关。 确定与获得的应变测量的所选变形模式相关的应变的分量，并确定每个所确定的应变分量的主应变分量和次应变分量。 将确定的主应变分量和二次应变分量映射到构件的表面以确定变形应变分布。

公开(公告)号：US20090051905A1

公开(公告)日：2009-02-26

申请号：US11867978

申请日：2007-10-05

申请人： Brooks A. Childers ,  Clark Davis Boyd ,  Norman Wayne Ritchie ,  Paul Samuel Zerwekh ,  Stephen E. Hester

发明人： Brooks A. Childers ,  Clark Davis Boyd ,  Norman Wayne Ritchie ,  Paul Samuel Zerwekh ,  Stephen E. Hester

IPC分类号： G01B11/26

CPC分类号： G01C9/20 ,  G01C9/06 ,  G01C2009/066

摘要： An optical inclination sensor is provided having at least one reflective surface and at least two separate optical fibers having ends spaced from a reflective surface. As the reflective surface tilts with respect to a pre-determined reference position the gap lengths between the fiber ends and the reflective surface change and the differences in these gap lengths is used to calculate an angle of inclination with respect to a reference position. The optical inclination sensor can include at least one mass attached to a housing and moveable with respect to the housing as the mass and housing are rotated about one or more axes. Optical strain sensors are disposed a various locations between the mass and housing so that as the mass moves with respect to the housing, each one of the optical strain sensors are placed in compression or tension. The housing can be a generally u-shaped housing having two arms and a base section with the mass disposed within the housing. Alternatively, the housing includes a first beam, and the mass is a second beam arranged generally orthogonal to the first beam and pivotally attached thereto. The optical strain sensors are disposed between the first beam and the second beam. The optical strain sensors are placed in tension or compression as the second beam pivots with respect to the first beam.

摘要翻译： 提供光学倾斜传感器，其具有至少一个反射表面和至少两个具有与反射表面间隔开的端部的分离的光纤。 当反射表面相对于预定的参考位置倾斜时，光纤端部和反射表面之间的间隙长度改变，并且使用这些间隙长度的差异来计算相对于参考位置的倾斜角度。 光学倾斜传感器可以包括附接到壳体的至少一个质量体，并且当质量和壳体围绕一个或多个轴线旋转时，该倾斜传感器可相对于壳体移动。 光学应变传感器设置在质量块和壳体之间的各种位置，使得当质量相对于壳体移动时，每个光学应变传感器被放置成压缩或张力。 壳体可以是具有两个臂的大体上U形的壳体和具有设置在壳体内的质量的基部。 或者，壳体包括第一梁，并且质量体是大致垂直于第一梁并且枢转地附接到其上的第二梁。 光学应变传感器设置在第一光束和第二光束之间。 当第二光束相对于第一光束枢转时，光学应变传感器被放置在张力或压缩状态。

公开(公告)号：US20070297711A1

公开(公告)日：2007-12-27

申请号：US11448475

申请日：2006-06-07

申请人： Brooks A. Childers ,  John W. Guarniere ,  Daniel S. Homa

发明人： Brooks A. Childers ,  John W. Guarniere ,  Daniel S. Homa

IPC分类号： G02B6/00

CPC分类号： G01D3/0365 ,  G01D5/35383 ,  G01L9/0039 ,  G01L9/0076

摘要： A multi-core optical fiber sensor is described, which sensor includes an optical fiber having at least two cores, wherein the cores have collocated measurement portions, for example in-fiber interferometers or Bragg grating portions. In an exemplary embodiment, the fiber is provided with collocated measurement portions during fiberization to eliminate drift factors and to provide temperature corrected parameter measurement capabilities.

摘要翻译： 描述了一种多芯光纤传感器，该传感器包括具有至少两个芯的光纤，其中芯具有并置的测量部分，例如光纤内干涉仪或布拉格光栅部分。 在示例性实施例中，纤维化期间纤维被提供并置的测量部分以消除漂移因子并提供温度校正的参数测量能力。

公开(公告)号：US06426496B1

公开(公告)日：2002-07-30

申请号：US09648529

申请日：2000-08-22

申请人： Mark E. Froggatt ,  Brooks A. Childers

发明人： Mark E. Froggatt ,  Brooks A. Childers

IPC分类号： G01J400

CPC分类号： H01S5/0687 ,  G01J9/0246 ,  H01S3/1305 ,  H01S3/137

摘要： A solid-state apparatus for tracking the wavelength of a laser emission has a power splitter that divides the laser emission into at least three equal components. Differing phase shifts are detected and processed to track variations of the laser emission.

摘要翻译： 用于跟踪激光发射波长的固态设备具有将激光发射分成至少三个相等分量的功率分配器。 检测和处理不同的相移以跟踪激光发射的变化。