Acoustic sensor for downhole measurement tool
    82.
    发明授权
    Acoustic sensor for downhole measurement tool 有权
    用于井下测量工具的声学传感器

    公开(公告)号:US07036363B2

    公开(公告)日:2006-05-02

    申请号:US10613610

    申请日:2003-07-03

    Inventor: Elan Yogeswaren

    Abstract: An acoustic sensor for use in a downhole measurement tool is provided. The acoustic sensor includes a piezo-composite transducer element. In various exemplary embodiments, the acoustic sensor further includes a composite backing layer, at least one matching layer, and a barrier layer deployed at an outermost surface of the sensor. Exemplary embodiments of this invention may advantageously withstand the extreme temperatures, pressures, and mechanical shocks frequent in downhole environments and thus may exhibit improved reliability. Exemplary embodiment of this invention may further provide improved signal to noise characteristics. Methods for fabricating acoustic sensors and downhole measurement tools are also provided.

    Abstract translation: 提供一种用于井下测量工具的声传感器。 声学传感器包括压电复合传感器元件。 在各种示例性实施例中,声学传感器还包括复合背衬层,至少一个匹配层以及布置在传感器的最外表面处的阻挡层。 本发明的示例性实施例可以有利地承受在井下环境中频繁的极端温度,压力和机械冲击,并且因此可以表现出改进的可靠性。 本发明的示例性实施例还可以提供改进的信噪比特性。 还提供了用于制造声传感器和井下测量工具的方法。

    Borehole acoustic source
    83.
    发明申请
    Borehole acoustic source 有权
    井眼声源

    公开(公告)号:US20050087391A1

    公开(公告)日:2005-04-28

    申请号:US10695078

    申请日:2003-10-28

    CPC classification number: G01V1/52 G01V1/143

    Abstract: The present invention discloses an acoustic borehole source and method of using the source for generating elastic waves through an earth formation that may be used for logging (such as by wireline) or permanent installations. In one embodiment, the acoustic source is comprised of a first motorized reaction mass and at least two pads, each pad connected to the sonde and the motorized reaction mass using pushing rods. To ensure proper positioning within the borehole, the sonde is anchored against the borehole wall using at least two of the pads or using a separate anchoring means. In a second embodiment, an acoustic borehole source is comprised of a first and second motorized reaction mass and at least two pads. The motorized reaction masses may be preferentially activated to allow the pads to move at an angle α relative to the axis of the sonde. In a third embodiment, the acoustic borehole source includes additional pairs of motorized reaction masses so that pads may be independently, preferentially activated.

    Abstract translation: 本发明公开了一种声孔源和使用该源产生弹性波通过地层形成的方法,该地层可用于测井(例如通过电缆)或永久性安装。 在一个实施例中,声源包括第一电动反应物质和至少两个焊盘,每个焊盘连接到探测器,并且使用推杆连接机动反应物质。 为了确保钻孔内的适当定位,使用至少两个垫或使用单独的锚定装置将探头锚固在钻孔壁上。 在第二实施例中,声孔源包括第一和第二电动反应物质和至少两个垫。 电动反应物质可以被优先激活以允许焊盘相对于探测器的轴线成α角移动。 在第三实施例中,声孔源包括额外的电动反作用质量对,使得焊盘可以独立地,优先地被激活。

    Oil well acoustic logging tool with baffles forming an acoustic waveguide
    84.
    发明授权
    Oil well acoustic logging tool with baffles forming an acoustic waveguide 有权
    油井声波测井仪具有形成声波导的挡板

    公开(公告)号:US06868036B2

    公开(公告)日:2005-03-15

    申请号:US10290617

    申请日:2002-11-08

    CPC classification number: G01V1/52 G01V1/523 Y10S367/911

    Abstract: An acoustic logging tool includes external baffle assemblies forming a waveguide structure at the acoustic source. The logging tool is designed for acoustic logging of earth formation surrounding a borehole. The external baffle assemblies form a waveguide structure that is designed to increase signal to noise ratio in an acoustic logging tool using dipole or other acoustic waves. In a preferred embodiment, the acoustic logging tool includes an elongated transmitter module, and a receiver sonde having a linear array of acoustic receivers. The transmitter module includes first and second cylindrical masses spaced apart along the axis by first and second spacers. The first cylindrical mass defines a first circular facing surface and a first cylindrical outer surface. The second cylindrical mass defines a second circular facing surface and a second cylindrical outer surface. A multi-pole acoustic source is fixedly mounted between the first and second circular facing surfaces, and located on the transmitter module axis between the first and second spacers. A first annular baffle assembly surrounding the first cylindrical outer surface has a first annular facing surface co-planar with the first circular facing surface. A second annular baffle assembly surrounding the second cylindrical outer surface has a second annular facing surface co-planar with the second circular facing surface. The annular baffle assemblies form an acoustic waveguide.

    Abstract translation: 声学测井工具包括在声源处形成波导结构的外部挡板组件。 测井工具设计用于围绕钻孔的地层的声波测井。 外部挡板组件形成波导结构,其被设计为在使用偶极或其它声波的声学测井工具中增加信噪比。 在优选实施例中,声学测井工具包括细长的发射器模块和具有声学接收器的线性阵列的接收器探头。 发射器模块包括通过第一和第二间隔物沿轴线间隔开的第一和第二圆柱形质量块。 第一圆柱形物质限定第一圆形面对表面和第一圆柱形外表面。 第二圆柱形物质限定第二圆形面对表面和第二圆柱形外表面。 多极声源固定地安装在第一和第二圆形面对表面之间,并且位于第一和第二间隔物之间​​的发射器模块轴上。 围绕第一圆柱形外表面的第一环形挡板组件具有与第一圆形面对表面共面的第一环形面对表面。 围绕第二圆柱形外表面的第二环形挡板组件具有与第二圆形面对表面共面的第二环形面对表面。 环形挡板组件形成声波导。

    Quadrupole acoustic shear wave logging while drilling
    85.
    发明申请
    Quadrupole acoustic shear wave logging while drilling 有权
    钻探时四极声波剪切波测井

    公开(公告)号:US20050000688A1

    公开(公告)日:2005-01-06

    申请号:US10488160

    申请日:2002-09-09

    CPC classification number: G01V1/46 G01V1/284 G01V1/44 G01V1/52

    Abstract: A tool generates signals indicative a shear wave slowness of the formation surrounding a borehole. The tool comprises a collar portion adapted for mounting in a drill string, a quadrupole sonic transmitter mounted to the collar portion, and a quadrupole sonic receiver array mounted to the collar spaced apart from the transmitter. A method determines shear wave slowness of the formation. The method includes propagating quadrupole wave energy into the formation and detecting quadrupole dispersive waveform received at a second location. Formation shear wave slowness is calculated using dispersive slowness time coherence processing.

    Abstract translation: 工具产生指示围绕钻孔的地层的剪切波缓慢的信号。 该工具包括适于安装在钻柱中的套环部分,安装到套环部分的四极声音发射器以及安装到与发射器间隔开的轴环的四极声波接收器阵列。 一种方法确定地层的剪切波慢度。 该方法包括将四极波能量传播到地层并检测在第二位置接收的四极分散波形。 使用色散慢时间相干处理计算形成剪切波慢度。

    Wideband isolator for acoustic tools
    86.
    发明授权
    Wideband isolator for acoustic tools 有权
    用于声学工具的宽带隔离器

    公开(公告)号:US06834743B2

    公开(公告)日:2004-12-28

    申请号:US10007955

    申请日:2001-12-07

    CPC classification number: G01V1/52

    Abstract: The acoustic isolator assembly of the present invention comprises a elongated cylindrical body suited for connection to an acoustic array and subsequent disposition within a wellbore. According to one embodiment of the present invention, the acoustic isolator comprises a plurality of cylindrical isolator modules that are coaxially arranged to form the body of the tool. Each isolator module comprises a spring disposed within an outer housing. The separate isolator modules are attached to one another by connecting rods around which are disposed a plurality of metal spacers. The isolator module further comprises mechanical stops that limit the deflection of the spring during high axial loading. These features enable the acoustic isolator assembly to withstand the high loading that may be applied during logging operations. Therefore, the isolator modules are capable of supporting high compressive and tensile loads without suffering permanent deformation of the springs.

    Abstract translation: 本发明的隔音器组件包括适于连接到声阵列并且随后在井筒内的配置的细长圆柱体。 根据本发明的一个实施例,声隔离器包括多个圆柱形隔离器模块,其同轴地布置以形成工具的主体。 每个隔离器模块包括设置在外壳内的弹簧。 单独的隔离器模块通过设置有多个金属间隔件的连接杆彼此附接。 隔离器模块还包括在高轴向负载期间限制弹簧的偏转的机械止动件。 这些特征使得隔音器组件能够承受在测井操作期间可能施加的高负荷。 因此,隔离器模块能够承受高的压缩和拉伸载荷,而不会发生弹簧的永久变形。

    Adjustable deployment apparatus for an actively clamped tubing-conveyed in-well seismic station
    87.
    发明申请
    Adjustable deployment apparatus for an actively clamped tubing-conveyed in-well seismic station 有权
    用于主动夹紧油管输送的井内地震台的可调部署装置

    公开(公告)号:US20040216872A1

    公开(公告)日:2004-11-04

    申请号:US10641402

    申请日:2003-08-14

    CPC classification number: E21B47/01 G01V1/42 G01V1/52 G01V11/005

    Abstract: The present invention generally relates to an apparatus and method for seismic monitoring. In one aspect, an apparatus for acoustically coupling a sensor mechanism to a surface in a wellbore is provided. The apparatus includes a mandrel disposable in a tubing string. The apparatus further includes a carrier member disposed on the mandrel, the carrier member axially adjustable relative to the mandrel. The apparatus also includes at least one sensor mounted on the carrier member, the at least one sensor connected to the surface of the well via a cable line and a deployment assembly disposed on the carrier member for coupling the at least one sensor to the surface of the well. In another aspect, a method for acoustically coupling a sensor mechanism to a surface of a wellbore is provided.

    Abstract translation: 本发明一般涉及用于地震监测的装置和方法。 在一个方面,提供了一种用于将传感器机构声学耦合到井眼中的表面的装置。 该设备包括在管柱中一次性的心轴。 该装置还包括设置在心轴上的承载构件,该承载构件相对于心轴可轴向调节。 所述设备还包括安装在承载构件上的至少一个传感器,所述至少一个传感器经由电缆线连接到井的表面,并且布置组件设置在载体构件上,用于将至少一个传感器耦合到 那个井 另一方面,提供了一种用于将传感器机构声学耦合到井眼表面的方法。

    Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same
    89.
    发明授权
    Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same 失效
    抑制钻孔内管波的方法和装置以及结合其的地震测量系统

    公开(公告)号:US06776255B2

    公开(公告)日:2004-08-17

    申请号:US10300277

    申请日:2002-11-19

    CPC classification number: G01V1/52

    Abstract: Methods and apparatus for attenuating waves in a bore hole, and seismic surveying systems incorporating the same. In one embodiment, an attenuating device includes a soft compliant bladder coupled to a pressurized gas source. A pressure regulating system reduces the pressure of the gas from the gas source prior to entering the bladder and operates in conjunction with the hydrostatic pressure of the fluid in a bore hole to maintain the pressure of the bladder at a specified pressure relative to the surrounding bore hole pressure. Once the hydrostatic pressure of the bore hole fluid exceeds that of the gas source, bore hole fluid may be admitted into a vessel of the gas source to further compress and displace the gas contained therein. In another embodiment, a water-reactive material may be used to provide gas to the bladder wherein the amount of gas generated by the water-reactive material may depend on the hydrostatic pressure of the bore hole fluid.

    Abstract translation: 用于衰减钻孔中的波浪的方法和装置,以及包括其的地震测量系统。 在一个实施例中,衰减装置包括耦合到加压气体源的柔性柔性囊。 压力调节系统在进入气囊之前降低来自气体源的气体的压力,并与钻孔中的流体的流体静压力一起工作,以使气囊的压力相对于周围的孔保持在规定的压力 孔压力。 一旦钻孔流体的静水压力超过气源的流体静压力,钻孔流体可被允许进入气体源的容器中,以进一步压缩并置换其中所含的气体。 在另一个实施方案中,水反应性材料可用于向气囊提供气体,其中由水反应性材料产生的气体的量可取决于钻孔流体的静水压力。

    Oil well acoustic logging tool with baffles forming an acoustic waveguide
    90.
    发明申请
    Oil well acoustic logging tool with baffles forming an acoustic waveguide 有权
    油井声波测井仪具有形成声波导的挡板

    公开(公告)号:US20040090863A1

    公开(公告)日:2004-05-13

    申请号:US10290617

    申请日:2002-11-08

    CPC classification number: G01V1/52 G01V1/523 Y10S367/911

    Abstract: An acoustic logging tool includes external baffle assemblies forming a waveguide structure at the acoustic source. The logging tool is designed for acoustic logging of earth formation surrounding a borehole. The external baffle assemblies form a waveguide structure that is designed to increase signal to noise ratio in an acoustic logging tool using dipole or other acoustic waves. In a preferred embodiment, the acoustic logging tool includes an elongated transmitter module, and a receiver sonde having a linear array of acoustic receivers. The transmitter module includes first and second cylindrical masses spaced apart along the axis by first and second spacers. The first cylindrical mass defines a first circular facing surface and a first cylindrical outer surface. The second cylindrical mass defines a second circular facing surface and a second cylindrical outer surface. A multi-pole acoustic source is fixedly mounted between the first and second circular facing surfaces, and located on the transmitter module axis between the first and second spacers. A first annular baffle assembly surrounding the first cylindrical outer surface has a first annular facing surface co-planar with the first circular facing surface. A second annular baffle assembly surrounding the second cylindrical outer surface has a second annular facing surface co-planar with the second circular facing surface. The annular baffle assemblies form an acoustic waveguide.

    Abstract translation: 声学测井工具包括在声源处形成波导结构的外部挡板组件。 测井工具设计用于围绕钻孔的地层的声波测井。 外部挡板组件形成波导结构,其被设计为在使用偶极或其它声波的声学测井工具中增加信噪比。 在优选实施例中,声学测井工具包括细长的发射器模块和具有声学接收器的线性阵列的接收器探头。 发射器模块包括通过第一和第二间隔物沿轴线间隔开的第一和第二圆柱形质量块。 第一圆柱形物质限定第一圆形面对表面和第一圆柱形外表面。 第二圆柱形物质限定第二圆形面对表面和第二圆柱形外表面。 多极声源固定地安装在第一和第二圆形面对表面之间,并且位于第一和第二间隔物之间​​的发射器模块轴上。 围绕第一圆柱形外表面的第一环形挡板组件具有与第一圆形面对表面共面的第一环形面对表面。 围绕第二圆柱形外表面的第二环形挡板组件具有与第二圆形面对表面共面的第二环形面对表面。 环形挡板组件形成声波导。

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