Acoustic source apparatus, systems, and methods
    1.
    发明授权
    Acoustic source apparatus, systems, and methods 有权
    声源设备,系统和方法

    公开(公告)号:US09158014B2

    公开(公告)日:2015-10-13

    申请号:US14386671

    申请日:2012-04-09

    IPC分类号: G01V1/40 G01V1/143

    CPC分类号: G01V1/143 G01V2210/1299

    摘要: In some embodiments, an apparatus and a system, as well as a method and an article, may operate to rotate a rotatable driving member having at least one driving lobe, and to periodically contact at least one cam on a unitary driven member with the at least one driving lobe during rotation of the rotatable driving member, to set the driven member in motion. This motion can be used to launch an acoustic wave along an axis substantially orthogonal to the axis of rotation of the driving member, where the driving member disposed completely within the driven member. The signature of the acoustic wave can be at least partially determined by the profile of the cam and the rotation rate of the driving member. Additional apparatus, systems, and methods are disclosed.

    摘要翻译: 在一些实施例中,装置和系统以及方法和制品可以操作以旋转具有至少一个驱动凸角的可旋转驱动构件,并且周期性地接触单一从动构件上的至少一个凸轮, 在可旋转驱动构件的旋转期间至少一个驱动凸轮,以使从动构件运动。 该运动可以用于沿着基本上垂直于驱动构件的旋转轴线的轴线发射声波,其中驱动构件完全设置在从动构件内。 声波的签名可以至少部分地由凸轮的轮廓和驱动构件的旋转速度决定。 公开了附加装置,系统和方法。

    ACOUSTIC LOGGING SYSTEMS AND METHODS EMPLOYING MULTI-MODE INVERSION FOR ANISOTROPY AND SHEAR SLOWNESS
    2.
    发明申请
    ACOUSTIC LOGGING SYSTEMS AND METHODS EMPLOYING MULTI-MODE INVERSION FOR ANISOTROPY AND SHEAR SLOWNESS 有权
    声学记录系统和方法采用多模式反转和剪切均匀度

    公开(公告)号:US20150049585A1

    公开(公告)日:2015-02-19

    申请号:US14388197

    申请日:2012-04-02

    IPC分类号: G01V1/34

    摘要: Acoustic logging systems and methods are provided with multi-mode inversion for at least vertical shear slowness and shear anisotropy. At least some method embodiments acquire waveforms for multiple acoustic wave modes as a function of tool position in a borehole, derive position-dependent mode dispersion curves from the waveforms, match the derived dispersion curves with parameterized dispersion curves to determine a vertical shear slowness and a shear anisotropy as a function of position, and displaying a borehole log that represents at least one of the vertical shear slowness and the shear anisotropy as a function of position. The objective function employed for the inversion is evaluated across multiple wave propagation modes and mud slownesses and may employ an adaptive, frequency-dependent weighting based on distance between the derived dispersion curves and the parameterized dispersion curves.

    摘要翻译: 声学测井系统和方法具有至少垂直剪切慢度和剪切各向异性的多模式反演。 至少一些方法实施例获取作为钻孔中的工具位置的函数的多个声波模式的波形,从波形导出与位置相关的模式色散曲线,使衍生的色散曲线与参数化的色散曲线匹配以确定垂直剪切慢度 剪切各向异性作为位置的函数,并且显示表示作为位置的函数的垂直剪切慢度和剪切各向异性中的至少一个的井眼对数。 通过多波传播模式和泥浆慢度评估用于反演的目标函数,并且可以采用基于派生色散曲线和参数化色散曲线之间的距离的自适应频率相关加权。

    Variable stiffness downhole tool housing

    公开(公告)号:US09631476B2

    公开(公告)日:2017-04-25

    申请号:US14401099

    申请日:2012-05-17

    摘要: Various systems and methods for implementing and using a variable stiffness downhole tool housing include cylindrical segments positioned along a common axis, with a pair of segments each coupled to a bulkhead and positioned at either axial end of the tool housing. The housing also includes a flexible cylindrical sleeve, positioned along the common axis between two of the plurality of cylindrical segments, that includes a first and second region with an outer diameter no larger than a common segment inner diameter and a third region located between the first and second regions and with an outer diameter no larger than a common segment outer diameter (the first and second regions each at least partially inserted into an end of one segment). A stiffness controller controls the stiffness of the tool housing by controlling at least part of an axial force exerted between the two segments.

    ANALYTIC ESTIMATION APPARATUS, METHODS, AND SYSTEMS
    5.
    发明申请
    ANALYTIC ESTIMATION APPARATUS, METHODS, AND SYSTEMS 有权
    分析估计装置,方法和系统

    公开(公告)号:US20140222346A1

    公开(公告)日:2014-08-07

    申请号:US14343006

    申请日:2012-08-28

    IPC分类号: G01V1/50

    摘要: In some embodiments, apparatus and systems, as well as methods, may operate to record a plurality of acoustic waveforms corresponding to acoustic waves received at azimuthally orthogonal dipole receiver arrays surrounded by a geological formation, the waves being generated by azimuthally orthogonal transmitter arrays. Further activity may include analytically estimating a global minimum of a predefined objective function with respect to an azimuth angle at a point in an auxiliary parameter space associated with a set of auxiliary parameters, minimizing the objective function at the analytically estimated angle with respect to the auxiliary parameters, removing existing ambiguities associated with the fast and slow principal flexural wave axes, and determining at least one property of the geological formation based on the global minimum. Additional apparatus, systems, and methods are disclosed.

    摘要翻译: 在一些实施例中,装置和系统以及方法可以操作以记录对应于在由地质构造围绕的方位正交偶极接收器阵列处接收的声波的多个声波形,所述波是由方位角正交发射器阵列产生的。 进一步的活动可以包括分析地估计相对于与一组辅助参数相关联的辅助参数空间中的点处的方位角的预定义目标函数的全局最小值,使得在相对于辅助参数的分析估计角度处的目标函数最小化 参数,消除与快和慢主要弯曲波轴相关联的现有模糊度,以及基于全局最小值确定地质构造的至少一个属性。 公开了附加装置,系统和方法。

    Joint time-frequency processing for borehole acoustic arrays

    公开(公告)号:US09631483B2

    公开(公告)日:2017-04-25

    申请号:US14413901

    申请日:2012-07-12

    IPC分类号: G01V3/00 E21B47/12 G01V1/48

    CPC分类号: E21B47/12 G01V1/48

    摘要: Various embodiments include apparatus and methods to process acoustic signals according to joint time-frequency processing. The joint time-frequency processing can combine features of both time-based processing and frequency-based processing. This processing may be based on delay calculation from amplitude phases generated from the acoustic signals. The joint time-frequency processing may be applied to a variety of applications to evaluate properties associated with a borehole or surrounding formations. Additional apparatus, systems, and methods are disclosed.

    Acoustic logging systems and methods employing multi-mode inversion for anisotropy and shear slowness
    8.
    发明授权
    Acoustic logging systems and methods employing multi-mode inversion for anisotropy and shear slowness 有权
    声学测井系统和采用多模式反演的各向异性和剪切慢度的方法

    公开(公告)号:US09529105B2

    公开(公告)日:2016-12-27

    申请号:US14388197

    申请日:2012-04-02

    IPC分类号: G01V1/34 G01V1/50 G01V1/40

    摘要: Acoustic logging systems and methods are provided with multi-mode inversion for at least vertical shear slowness and shear anisotropy. At least some method embodiments acquire waveforms for multiple acoustic wave modes as a function of tool position in a borehole, derive position-dependent mode dispersion curves from the waveforms, match the derived dispersion curves with parameterized dispersion curves to determine a vertical shear slowness and a shear anisotropy as a function of position, and displaying a borehole log that represents at least one of the vertical shear slowness and the shear anisotropy as a function of position. The objective function employed for the inversion is evaluated across multiple wave propagation modes and mud slownesses and may employ an adaptive, frequency-dependent weighting based on distance between the derived dispersion curves and the parameterized dispersion curves.

    摘要翻译: 声学测井系统和方法具有至少垂直剪切慢度和剪切各向异性的多模式反演。 至少一些方法实施例获取作为钻孔中的工具位置的函数的多个声波模式的波形,从波形导出与位置相关的模式色散曲线,使衍生的色散曲线与参数化的色散曲线匹配,以确定垂直剪切慢度 剪切各向异性作为位置的函数,并且显示表示作为位置的函数的垂直剪切慢度和剪切各向异性中的至少一个的井眼对数。 通过多波传播模式和泥浆慢度评估用于反演的目标函数,并且可以采用基于派生色散曲线和参数化色散曲线之间的距离的自适应频率相关加权。

    DIFFERENTIAL PHASE SEMBLANCE APPARATUS, SYSTEMS, AND METHODS
    9.
    发明申请
    DIFFERENTIAL PHASE SEMBLANCE APPARATUS, SYSTEMS, AND METHODS 有权
    差分相位设备,系统和方法

    公开(公告)号:US20150253447A1

    公开(公告)日:2015-09-10

    申请号:US14427876

    申请日:2012-11-01

    摘要: In some embodiments, apparatus and systems, as well as methods, may operate to shift signal data associated with a set of receivers, in time or phase with respect to signal data associated with a receiver reference point, to transform the signal data into shifted data, wherein the signal data corresponds to energy waves propagated through a geological formation before being received by the set of receivers; to multiply the shifted data by a complex conjugate of the signal data associated with the receiver reference point to provide differential phase values; to sum and average the differential phase values to provide differential phase semblance values; and to publish the differential phase semblance values, or information derived from the differential phase semblance values to one of a storage medium, a hardcopy printout, or a display. Additional apparatus, systems, and methods are disclosed.

    摘要翻译: 在一些实施例中,设备和系统以及方法可以操作以相对于与接收机参考点相关联的信号数据在时间或相位上移位与一组接收器相关联的信号数据,以将信号数据变换成移位数据 ,其中所述信号数据对应于在被所述一组接收器接收之前通过地质构造传播的能量波; 将移位的数据乘以与接收机参考点相关联的信号数据的复共轭,以提供差分相位值; 求和并平均差分相位值以提供差分相位相似值; 并且将差分相位相似度值或从差分相位相似值导出的信息发布到存储介质,硬拷贝打印输出或显示器之一。 公开了附加装置,系统和方法。

    Acoustic imaging
    10.
    发明授权
    Acoustic imaging 有权
    声学成像

    公开(公告)号:US09110166B2

    公开(公告)日:2015-08-18

    申请号:US13309342

    申请日:2011-12-01

    摘要: In various embodiments, apparatus and methods are provided to perform acoustic imaging. An acoustic wave can be acquired at a detector, where the acoustic wave propagates from a target to the detector. The target may be acoustically illuminated to provide the acoustic wave. A signal from the detector in response to acquiring the acoustic wave can be processed in a model such that the processing implements a synthetic acoustic lens to generate an image of the target. Additional apparatus, systems, and methods are disclosed.

    摘要翻译: 在各种实施例中,提供了设备和方法来执行声学成像。 声波可以在检测器处获取,其中声波从目标传播到检测器。 可以对声目进行声学照明以提供声波。 可以在模型中处理响应于获取声波的来自检测器的信号,使得处理实现合成声透镜以产生目标的图像。 公开了附加装置,系统和方法。