Acoustic sensor for fluid characterization
    2.
    发明授权
    Acoustic sensor for fluid characterization 有权
    用于流体表征的声学传感器

    公开(公告)号:US06817229B2

    公开(公告)日:2004-11-16

    申请号:US10384030

    申请日:2003-03-07

    IPC分类号: G01N2900

    摘要: A method and apparatus for in-situ characterization of downhole fluids in a wellbore using ultrasonic acoustic signals. Measurements of the speed of sound, attenuation of the signal, and acoustic back-scattering are used to provide qualitative and quantitative data as to the composition, nature of solid particulates, compressibility, bubble point, and the oil/water ratio of the fluid. The tool generally comprises three sets of acoustic transducers mounted perpendicular to the direction of the flow. These transducers are capable of operating at different frequencies so that the spectrum of the acoustic signal can be optimized. The apparatus is capable of operating downhole to provide real time information as to conditions in the well.

    摘要翻译: 一种用于使用超声波信号在井筒中井下流体进行原位表征的方法和装置。 用于测量声速,信号衰减和声反散射的方法来提供关于固体颗粒的组成,性质,可压缩性,起泡点和流体的油/水比的定性和定量数据。 该工具通常包括垂直于流动方向安装的三组声换能器。 这些传感器能够以不同的频率操作,从而可以优化声信号的频谱。 该装置能够在井下操作以提供关于井中的条件的实时信息。

    Sensor configuration for nulling reverberations to image behind
reflective layers
    6.
    发明授权
    Sensor configuration for nulling reverberations to image behind reflective layers 失效
    传感器配置用于使反射层后面的图像归零

    公开(公告)号:US6002639A

    公开(公告)日:1999-12-14

    申请号:US856115

    申请日:1997-05-14

    IPC分类号: G01V1/44 G01V1/40

    CPC分类号: G01V1/44

    摘要: A transducer configuration disposed within a wellbore sonde for acoustically imaging a target region behind an acoustically reflective layer includes a transmitting transducer for producing a transmitted acoustic beamspread pattern defined by a insonified zone having a width approximately equal to a width of the transmitting transducer and a transmitting main lobe beyond the transmitting collimated zone. The transducer configuration also includes a receiving transducer disposed adjacent the transmitting transducer. The receiving transducer includes an acoustic signal reception pattern defined by a insonified zone having a width approximately equal to a width of the receiving transducer and a receiving main lobe beyond the receiving insonified zone. A beamspread angle defines an amplitude contour forming an outer periphery of the transmitting and receiving main lobes. Intersection of the transmitting and receiving main lobes behind but not within an acoustically reflective layer allows the transducer configuration to null reverberation energy from the acoustically reflective material and enhance acoustic energy received from the less reflective material disposed behind the highly reflective material.

    摘要翻译: 设置在井筒探测器内的换能器配置用于对声反射层后面的目标区域进行声学成像,包括发射换能器,用于产生由具有大致等于发射换能器的宽度的宽度的扩散区限定的透射声束扩展图案, 主瓣超出发射准直区。 换能器配置还包括邻近发射换能器设置的接收换能器。 接收换能器包括由具有近似等于接收换能器的宽度的宽度的增强区限定的声学信号接收图案和超出接收声音区的接收主瓣。 光束展开角度定义了形成发射和接收主瓣的外周的振幅轮廓。 发射和接收主波瓣在后面但不在声反射层内的交叉允许换能器配置将来自声反射材料的混响能量消除,并增强从设置在高反射材料后面的较小反射材料接收的声能。

    Vibrational forced mode fluid property monitor and method
    7.
    发明授权
    Vibrational forced mode fluid property monitor and method 失效
    振动强制模式液体性能监测及方法

    公开(公告)号:US06412354B1

    公开(公告)日:2002-07-02

    申请号:US09464728

    申请日:1999-12-16

    IPC分类号: G01F184

    摘要: A fluid property monitor includes a transducer assembly to impart multiple frequency energy to a conduit in one or more modes and to receive resonant frequency energy from the conduit. The resonant frequency energy is responsive to the imparted energy, the conduit and a fluid in the conduit. The fluid property monitor can also be defined as including: a frequency signal generator connected to cause multiple frequency energy to be transferred to a conduit having a fluid to be monitored; and a spectral analysis signal processor connected to receive and process electrical signals generated in response to vibrations propagated through the conduit and the fluid in the conduit in response to transferred multiple frequency energy. Particular implementations can be adapted as a densitometer, a coherent flow detector, and other particular fluid parameter detectors. A method of monitoring a fluid includes: imparting multiple frequency vibration-inducing energy to a conduit and fluid system; and sensing a plurality of frequency signals from the conduit and fluid system responsive to at least part of the imparted multiple frequency vibration-inducing energy. This method can also include determining at least one characteristic of the conduit and fluid system in response to the sensed plurality of frequency signals.

    摘要翻译: 流体特性监测器包括换能器组件,其以一种或多种模式将多个频率能量传递到导管并且从该导管接收共振频率能量。 谐振频率能量响应于所施加的能量,导管和导管中的流体。 流体特性监视器还可以被定义为包括:频率信号发生器,其被连接以使多个频率能量传递到具有待监测流体的导管; 以及频谱分析信号处理器,其被连接以响应于传送的多个频率能量响应于通过导管传播的振动和导管中的流体而产生的电信号。 特定的实施方案可以适用于密度计,相干流检测器和其它特定的流体参数检测器。 监测流体的方法包括:向导管和流体系统施加多频率振动诱发能量; 以及响应于所施加的多频率振动诱发能量的至少一部分,从所述导管和流体系统感测多个频率信号。 该方法还可以包括响应于感测到的多个频率信号确定导管和流体系统的至少一个特征。

    System and method for providing dual distance transducers to image
behind an acoustically reflective layer
    8.
    发明授权
    System and method for providing dual distance transducers to image behind an acoustically reflective layer 失效
    用于提供双距离换能器以在声反射层之后成像的系统和方法

    公开(公告)号:US6125079A

    公开(公告)日:2000-09-26

    申请号:US856113

    申请日:1997-05-14

    IPC分类号: G01V1/44 G01V1/40 G01V1/00

    CPC分类号: G01V1/44

    摘要: A transducer configuration for use in acoustically imaging a target region behind an acoustically reflective layer includes a sonde having a geometrical center and constructed and arranged to support a plurality of transducers. The system includes a first transducer disposed within the sonde at a first distance from the geometrical center for generating a first acoustic pulse and for receiving a first acoustic signal. The acoustic signal comprises a first reflection from the reflective surface, a first set of fluid multiples arising from reflections between the reflective layer and a surface of the first transducer, and a first signal associated with the target area. The system also includes a second transducer disposed within the sonde at a second distance from the geometrical center for generating a second acoustic pulse and for receiving a second acoustic signal. The second acoustic comprises a second reflection from the reflective surface, a second set of fluid multiples arising from reflections between the reflective layer and a surface of the second transducer and a second signal associated with the target area. A mechanism for receiving and processing signals received by the first and second transducers at time intervals which occur between receipt of the first and second sets of fluid multiples, respectively, wherein signal values at time intervals between receipt of fluid multiples provide acoustic waveforms associated with the target region. Each target region, therefore, has a time interval on at least one of the two waveforms which is free of fluid multiples.

    摘要翻译: 用于对声反射层后面的目标区域进行声学成像的换能器配置包括具有几何中心并被构造和布置成支撑多个换能器的探空器。 该系统包括设置在探头内距离几何中心第一距离处的第一换能器,用于产生第一声脉冲并用于接收第一声信号。 声信号包括来自反射表面的第一反射,由反射层和第一换能器的表面之间的反射产生的第一组流体倍数,以及与目标区域相关联的第一信号。 系统还包括设置在探头内距离几何中心第二距离处的第二换能器,用于产生第二声脉冲并接收第二声信号。 第二声波包括来自反射表面的第二反射,由反射层和第二换能器的表面之间的反射产生的第二组流体倍数和与目标区域相关联的第二信号。 一种用于分别接收和处理由第一和第二组流体倍数接收之间出现的时间间隔由第一和第二换能器接收的信号的机构,其中在接收流体倍数之间的时间间隔处的信号值提供与 目标区域。 因此,每个目标区域在没有流体倍数的两个波形中的至少一个上具有时间间隔。

    Transducer configuration having a multiple viewing position feature
    10.
    发明授权
    Transducer configuration having a multiple viewing position feature 失效
    具有多重观察位置特征的传感器配置

    公开(公告)号:US6021093A

    公开(公告)日:2000-02-01

    申请号:US856112

    申请日:1997-05-14

    IPC分类号: G01V1/44 G01V1/40

    CPC分类号: G01V1/44

    摘要: A transducer configuration of an acoustic sensing tool for determining the consistency of a first medium disposed between a layer having a greater acoustic reflectivity than the first medium and a second medium, the sensing tool including a rotating head, wherein the tool comprises first, second and third transducer pairs in a spaced apart configuration, each pair comprising a transmitting transducer for transmitting an acoustic radiation signal in an insonified zone, and receiving transducer having a receiving radiation pattern in a insonified zone, wherein the space between the transmitting and receiving transducers in each pair is constructed and arranged to allow the transmitting and receiving insonified zones to intersect behind but not in the acoustically reflective layer to null reverberation energy therefrom. The tool also includes a centerline of radiation from each transmitting transducer that propagates and refracts through the reflective layer such that all transmitting centerlines intersect in an intersection near voxel, wherein the intersection voxel is interrogated by all three transducer pairs substantially simultaneously at nearly a single azimuthal head position, such that any occlusion is interrogated from three different directions, thereby facilitating determination of occlusion surface orientation.

    摘要翻译: 用于确定布置在具有比第一介质更大的声反射率的层之间的第一介质和第二介质的一致性的声学感测工具的传感器配置,所述感测工具包括旋转头,其中所述工具包括第一和第二介质 第三传感器对以间隔开的配置,每对包括用于在未加密区域中传输声辐射信号的发射换能器,以及在第一增强区域中接收具有接收辐射图的换能器,其中每个发射和接收换能器之间的空间 对被构造和布置成允许发送和接收的声音区域在后面而不是在声反射层中相交,以消除其中的混响能量。 该工具还包括来自每个发射换能器的辐射的中心线,其传播和折射通过反射层,使得所有发射中心线在体素附近的交叉点相交,其中所述三个换能器对基本同时以几乎一个方位角询问交叉体素 头位置,使得从三个不同方向询问任何闭塞,从而有助于确定闭塞表面取向。