DEVICES AND METHODS FOR DOWNHOLE ACOUSTIC IMAGING
    3.
    发明申请
    DEVICES AND METHODS FOR DOWNHOLE ACOUSTIC IMAGING 有权
    用于卧室声学成像的装置和方法

    公开(公告)号:US20150204993A1

    公开(公告)日:2015-07-23

    申请号:US14587251

    申请日:2014-12-31

    IPC分类号: G01V1/44 E21B47/01 G01V1/16

    摘要: An acoustic transducer assembly includes: a carrier configured to be disposed in an earth formation, the carrier having a carrier axis; an array of transducer elements forming at least a semicircular shape, the array configured to emit acoustic signals in a radial direction relative to the carrier axis; and a circuit coupled to the array and configured to actuate a subset of the transducer elements and emit an acoustic beam therefrom, the circuit configured to actuate the subsets as a phased array to electronically rotate the acoustic beam about the carrier axis.

    摘要翻译: 声学换能器组件包括:被配置为设置在地层中的载体,载体具有载体轴线; 形成至少半圆形的换能器元件的阵列,所述阵列被配置为相对于所述载体轴沿径向方向发射声信号; 以及耦合到所述阵列并且被配置为致动所述换能器元件的子集并且从其发射声束的电路,所述电路被配置为致动所述子集作为相控阵列以电子地绕所述载体轴线旋转所述声束。

    Stop collar friction clamping device
    5.
    发明授权
    Stop collar friction clamping device 失效
    止动圈摩擦夹紧装置

    公开(公告)号:US08074712B2

    公开(公告)日:2011-12-13

    申请号:US12423540

    申请日:2009-04-14

    IPC分类号: E21B17/10

    CPC分类号: E21B17/1028

    摘要: A stop collar assembly used for axially securing and/or to resist axial sliding of a downhole tool device. The assembly provided on a housing of the downhole tool and includes a generally annular ring having an inner circumference beveled outward proximate to the ring edge. A clamp ring having a raised portion on its outer surface is disposed adjacent and substantially coaxial with the annular ring. Pushing the annular ring against the clamp ring compresses the clamp ring onto the housing to resist axial sliding of the annular ring.

    摘要翻译: 用于轴向固定和/或抵抗井下工具装置的轴向滑动的止动套环组件。 所述组件设置在所述井下工具的壳体上并且包括大致环形的环,所述环具有靠近所述环形边缘向外倾斜的内圆周。 在其外表面上具有凸起部分的夹环设置成与环形圈相邻并基本上同轴。 将环形环压靠在夹环上将夹紧环压紧到壳体上以阻止环形圈的轴向滑动。

    Televiewer Image Wood-Grain Reduction Techniques
    6.
    发明申请
    Televiewer Image Wood-Grain Reduction Techniques 有权
    电视图像木纹减少技术

    公开(公告)号:US20100265796A1

    公开(公告)日:2010-10-21

    申请号:US12760333

    申请日:2010-04-14

    IPC分类号: G01V1/00

    摘要: Measurements made by a transducer assembly for downhole imaging are affected by reverberations between the transducer and the window on the outside of the assembly. The reverberations result in a stationary noise on the image. Hardware solutions to improve signal-to-noise ratio includes using a composite transducer, adjusting the distance between the transducer and the window. SNR can also be improved by processing techniques that include stacking, fitting a sinusoid to the reverberation, by envelope peak detection, and by applying a notch filter.

    摘要翻译: 用于井下成像的换能器组件进行的测量受到传感器与组件外部的窗口之间的混响的影响。 混响导致图像上的静止噪声。 提高信噪比的硬件解决方案包括使用复合传感器,调整传感器和窗口之间的距离。 还可以通过包括堆叠,将正弦曲线拟合到混响,通过包络峰值检测以及通过应用陷波滤波器的处理技术来改善SNR。

    GUIDED ACOUSTIC WAVES ISOLATION SYSTEM FOR DOWNHOLE APPLICATIONS
    8.
    发明申请
    GUIDED ACOUSTIC WAVES ISOLATION SYSTEM FOR DOWNHOLE APPLICATIONS 有权
    用于井下应用的指导声波隔离系统

    公开(公告)号:US20160070014A1

    公开(公告)日:2016-03-10

    申请号:US14477316

    申请日:2014-09-04

    IPC分类号: G01V1/30 G01V1/50

    摘要: An apparatus for estimating a property of a subsurface material includes a carrier configured to convey an acoustic wave guide though a borehole. The acoustic wave guide includes an acoustic plate configured to guide an acoustic wave along a path of the plate and an acoustic reservoir coupled to the acoustic plate and at least partially surrounding the acoustic plate. The acoustic reservoir has a mass greater than the mass of the acoustic plate and is configured to absorb acoustic wave leakage from the acoustic plate. A first acoustic transducer is coupled to the acoustic plate and configured to transmit an acoustic wave along the path. A second acoustic transducer is coupled to the acoustic plate and configured to receive the acoustic wave that travels along the path. A controller is configured to operate the first acoustic transducer and the second acoustic transducer in order to estimate the property.

    摘要翻译: 用于估计地下材料的性质的装置包括构造成通过钻孔传送声波引导件的载体。 声波引导件包括声学板,其被配置为沿着板的路径引导声波和耦合到声学板并且至少部分地围绕声板的声学容器。 声学储存器具有大于声学板的质量的质量,并且被配置为吸收来自声学板的声波泄漏。 第一声​​换能器耦合到声板并且被配置为沿着路径传输声波。 第二声换能器耦合到声板并被配置为接收沿着路径行进的声波。 控制器被配置为操作第一声换能器和第二声换能器以估计该属性。

    Guided acoustic waves isolation system for downhole applications
    10.
    发明授权
    Guided acoustic waves isolation system for downhole applications 有权
    引导声波隔离系统用于井下应用

    公开(公告)号:US09581708B2

    公开(公告)日:2017-02-28

    申请号:US14477316

    申请日:2014-09-04

    IPC分类号: G01V1/30 G01V1/50

    摘要: An apparatus for estimating a property of a subsurface material includes a carrier configured to convey an acoustic wave guide though a borehole. The acoustic wave guide includes an acoustic plate configured to guide an acoustic wave along a path of the plate and an acoustic reservoir coupled to the acoustic plate and at least partially surrounding the acoustic plate. The acoustic reservoir has a mass greater than the mass of the acoustic plate and is configured to absorb acoustic wave leakage from the acoustic plate. A first acoustic transducer is coupled to the acoustic plate and configured to transmit an acoustic wave along the path. A second acoustic transducer is coupled to the acoustic plate and configured to receive the acoustic wave that travels along the path. A controller is configured to operate the first acoustic transducer and the second acoustic transducer in order to estimate the property.

    摘要翻译: 用于估计地下材料的性质的装置包括构造成通过钻孔传送声波引导件的载体。 声波引导件包括声学板,其被配置为沿着板的路径引导声波和耦合到声学板并且至少部分地围绕声板的声学容器。 声学储存器具有大于声学板的质量的质量,并且被配置为吸收来自声学板的声波泄漏。 第一声​​换能器耦合到声板并且被配置为沿着路径传输声波。 第二声换能器耦合到声板并被配置为接收沿着路径行进的声波。 控制器被配置为操作第一声换能器和第二声换能器以估计该属性。