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    SHEAR WAVE GENERATOR
    3.
    发明申请
    SHEAR WAVE GENERATOR 审中-公开
    剪切波发生器

    公开(公告)号：US20090114473A1

    公开(公告)日：2009-05-07

    申请号：US11719579

    申请日：2005-11-16

    申请人： Harald Westerdahl ,  Per Sparrevik ,  Christian Madshus

    发明人： Harald Westerdahl ,  Per Sparrevik ,  Christian Madshus

    IPC分类号： G01V1/04

    CPC分类号： G01V1/053

    摘要： A shear wave generator for use subsea, including an excitation unit that is fastened to a top plate; a skirt, the upper end of which is fastened sealingly to the top plate and extending downward to an open lower end of the skirt, such that the top plate and skirt form a closed space by lowering to the seabed; and a pump arranged with fluid communication between the space and the surroundings, such that by pumping water out of the space, an underpressure is formed acting to suck the shear wave generator fixedly to and partly into the seabed, and by pumping water into the space, an overpressure is formed acting to lift the shear wave generator up from the seabed. The shear wave generator is distinguished in that the skirt is formed with a larger outer diameter or width at its upper end than at its lower end.

    摘要翻译： 一种用于海底的剪切波发生器，包括紧固到顶板的激励单元; 裙部，其上端密封地紧固到顶板并向下延伸到裙部的敞开的下端，使得顶板和裙部通过降低到海床而形成封闭空间; 以及泵，其布置成在空间和周围环境之间具有流体连通性，使得通过将水泵送出空间，形成负压，其将固定地部分地吸入海底的剪切波发生器，并且通过将水泵入空间 形成了一个超压力，用于将剪切波发生器从海底提升。 剪切波发生器的特征在于，裙部在其上端形成有比在其下端更大的外径或宽度。

    Vibration generator for seismic applications
    4.
    发明授权
    Vibration generator for seismic applications 有权
    用于地震应用的振动发生器

    公开(公告)号：US07136325B2

    公开(公告)日：2006-11-14

    申请号：US10630273

    申请日：2003-07-30

    申请人： Ulrich Polom

    发明人： Ulrich Polom

    IPC分类号： G01V1/04

    CPC分类号： G01V1/053

    摘要： A vibration generator can be used for seismic applications, producing vibrations for exploration of near-surface subsoils up to 150 meters. Containing two coils activated with AC current or other electrical pulses, the generator is coupled to the object to be investigated by suitable elements. Inside is an inner housing, the outer housing movably supporting, on opposing sides, two coils connected through the inner housing. One coil is activated continuously and alternates with a positive wave component of an AC current control signal; at the same time the other coil alternates with a negative wave component. The result, a controlled vibratory motion, is also achieved with DC voltage. Because of the law of action and reaction, the vibratory motion passed to the coupling elements allows motion into the object being investigated. In contrast to conventional moving coil systems for electromechanical vibration transduction, this generator is based on a soft-metal magnetic instrument.

    摘要翻译： 振动发生器可用于地震应用，产生用于探测高达150米的近地表土壤的振动。 包含用AC电流或其他电脉冲激活的两个线圈，发电机通过适当的元件耦合到待研究的物体。 内部是内部壳体，外部壳体在相对侧上可移动地支撑通过内部壳体连接的两个线圈。 一个线圈被连续地激活并与交流电流控制信号的正波分量交替; 同时另一个线圈与负波分量交替。 结果，一个受控的振动运动也是用直流电压实现的。 由于动作和反应的规律，传递给耦合元件的振动可以使运动进入待调查对象。 与用于机电振动换能的常规运动线圈系统相反，该发电机基于软金属磁性仪器。

    Shear wave generator
    6.
    发明授权
    Shear wave generator 失效

    公开(公告)号：US06612397B2

    公开(公告)日：2003-09-02

    申请号：US10148547

    申请日：2002-06-04

    申请人： Per Sparrevik ,  Harald Westerdahl ,  Christian Madshus

    发明人： Per Sparrevik ,  Harald Westerdahl ,  Christian Madshus

    IPC分类号： G01V1053

    CPC分类号： G01V1/053 ,  G01V1/3808 ,  Y10S181/401

    摘要： A seismic shear wave generator comprising a seismic wave source (3) arranged on a base plate (11) arranged for being placed at the seabed, and a coupling device (1) arranged for coupling the wave source (3) mechanically to the seabed in order for shear waves to be transmitted to the seabed. The novelty of the invention is as follows: a cylindrical skirt (1) closely arranged along the base plate's (11) circumference and extending down from the underside of the base plate (11), and open downwards, and a pump device (2) arranged for pumping water respectably out of, and into, the skirt (1) and form vacuum or overpressure, respectively, in a closed cavity formed by the skirt (1) and the base plate (11) and the seabed (1) is lowered onto the seabed. By means of the device mentioned above the shear wave generator may be suctioned fixed to the sea bed and thus transfer shear waves via the skirt (1) to the seabed.

    Controlled-polarization marine seismic shear-wave source
    7.
    发明授权
    Controlled-polarization marine seismic shear-wave source 失效
    控制极化海洋地震剪切波源

    公开(公告)号：US06612396B1

    公开(公告)日：2003-09-02

    申请号：US09677141

    申请日：2000-10-02

    申请人： Paul Chelminski ,  Rodney A. E. Humphreys

    发明人： Paul Chelminski ,  Rodney A. E. Humphreys

    IPC分类号： G01V138

    CPC分类号： G01V1/053 ,  G01V1/3808

    摘要： Controlled-polarization marine seismic shear-wave source has a base suitable for positioning on a seafloor, beneath a water body. Twin water-blast tubes (seismic-impulse-generation thrusters) are mounted on the base, aimed upwardly, outwardly in opposite directions at equal acute angles &bgr; relative to the base. These blast tubes are positioned symmetrically on opposite sides of vertical centerline CL of the source. When submerged, water enters open mouths at upper ends of the tubes. The base has multiple downwardly projecting blade-like teeth for penetrating into the seafloor. Firing a compressed-air discharger mounted in a lower end of a water-blast tube hurls a powerful slug of water upwardly along the tube, producing a powerful reaction impulse acting downwardly generally parallel with the tube axis. These blade-like teeth, engaging with seafloor material, couple into the seafloor horizontal force components of reaction impulses, thereby propagating simultaneously into the body of the seafloor horizontally-polarized shear waves (SH-Waves) and vertically-polarized shear waves (SV-Waves). Firing one blast tube produces SH-Waves and SV-Waves of first polarities. Firing the other tube produces SH-Waves and SV-Waves of second polarities, respectively opposite to the first polarities. Both tubes are fired simultaneously for propagating compressional P-Waves. While lifting slightly by a swivel cable, azimuthal orientations of the source and resulting shear-wave orientations are controllably changeable by simultaneously firing pneumatic thrusters aimed outwardly from diagonally opposite corners of the base.

    摘要翻译： 受控极化海洋地震剪切波源具有适合定位在海底以下的水体的基座。 双层水喷射管（地震脉冲发生推进器）安装在基座上，向上相对于基座以相等的锐角β向相反方向向外。 这些鼓风管对称地定位在源的垂直中心线CL的相对侧上。 当浸没时，水在管的上端进入开口。 底座具有多个向下突出的叶片状齿，用于穿透入海底。 燃烧安装在喷水管下端的压缩空气排放器沿着管向上推出强大的水，从而产生大致平行于管轴的向下作用的强大的反作用冲程。 这些与海底材料接合的叶片状齿耦合到反应脉冲的海底水平力分量中，从而同时传播到海底水平偏振剪切波（SH波）和垂直偏振剪切波（SV- 波浪）。 发射一个鼓风管产生第一极性的SH波和SV波。 点燃另一根管产生分别与第一极性相反的第二极性的SH波和SV波。 两个管同时发射以传播压缩P波。 当通过旋转电缆稍微抬起时，源的方位取向和由此产生的剪切波取向可以通过同时从基座的对角相对的角向外朝外的气动推进器发射来控制地变化。

    System and method for orienting seismic energy receivers to yield discriminated vertical shear waves
    8.
    发明授权
    System and method for orienting seismic energy receivers to yield discriminated vertical shear waves 失效
    用于定向地震能量接收器的系统和方法以产生鉴别的垂直剪切波

    公开(公告)号：US06564150B2

    公开(公告)日：2003-05-13

    申请号：US09788840

    申请日：2001-02-20

    申请人： Allen L. Gilmer ,  Bob A. Hardage ,  James L. Simmons, Jr.

    发明人： Allen L. Gilmer ,  Bob A. Hardage ,  James L. Simmons, Jr.

    IPC分类号： G01V128

    CPC分类号： G01V1/053 ,  G01V1/28 ,  G01V1/284 ,  G01V1/3808 ,  G01V2210/20

    摘要： A system for, and method of, orienting seismic energy sources and seismic energy receivers to substantially separate a compressional wave from a vertical shear wave. The method includes reflecting a seismic energy from a subsurface interface to produce a reflected seismic energy wave that has a compressional energy and vertical shear energy associated therewith. A first seismic energy receiver is oriented such that it is aligned with an angle of emergence of the reflected seismic energy wave to thereby maximize the vertical shear energy received by a second seismic energy receiver.

    摘要翻译： 地震能量源和地震能量接收器的系统和方法，用于将压缩波与垂直剪切波基本上分开。 该方法包括从地下界面反射地震能量以产生具有与之相关联的压缩能量和垂直剪切能的反射地震能量波。 第一地震能量接收器被定向成使得其与反射的地震能量波的出现角度对准，从而最大化由第二地震能量接收器接收的垂直剪切能量。

    Method and apparatus for maximizing seismic shear wave production
    9.
    发明授权
    Method and apparatus for maximizing seismic shear wave production 失效
    最大化地震剪切波产生的方法和装置

    公开(公告)号：US4980874A

    公开(公告)日：1990-12-25

    申请号：US359151

    申请日：1989-05-31

    申请人： Mahlon G. Justice, Jr.

    发明人： Mahlon G. Justice, Jr.

    IPC分类号： G01V1/053

    CPC分类号： G01V1/053

    摘要： An apparatus and method for maximizing the shear wave energy imparted into the soil upon the impacting of a base plate by an impact mass from a seismic generator. A seismic generator is disposed at an angle relative to a line generally perpendicular to the surface to the ground. The angle varies with soil conditions and the angle is determined by locating an accelerometer on the base plate of the generator and observing the horizontal acceleration rate as indicated by the accelerometer. If the acceleration rate exceeds a predetermined value, the anguular disposition of the generator s changed to decrease the angle either manually or automatically until the acceleration rate no longer exceeds a predetermined value.

    摘要翻译： 一种用于使来自地震发生器的冲击质量撞击基板时施加到土壤中的剪切波能量最大化的装置和方法。 地震发生器相对于大体上垂直于地面的地线的一定角度设置。 角度随土壤条件而变化，角度通过将加速度计定位在发电机底板上来确定，并按照加速度计所示的方式观察水平加速度。 如果加速度超过预定值，则发生器的角度偏移改变为手动或自动地减小角度，直到加速度不再超过预定值。