SYSTEM AND METHOD FOR UNDERWATER SEISMIC DATA ACQUISITION
    1.
    发明申请
    SYSTEM AND METHOD FOR UNDERWATER SEISMIC DATA ACQUISITION 审中-公开
    水下地震数据采集系统与方法

    公开(公告)号:US20100226203A1

    公开(公告)日:2010-09-09

    申请号:US12771608

    申请日:2010-04-30

    IPC分类号: G01V1/38

    摘要: A seismic source is provided that uses suitable low frequency acoustic transducers enabling a complex chirp to be used while increasing the effective power level and keeping the peak power down to a fraction of this effective power. The transducers can be driven using a pseudo-random coding of chirps that change frequency in each contiguous burst within the chirp and the interval between chirps varied to provide a pseudo-random duty cycle allowing multiple signals to be present in the water at the same time with a wider spectral coverage. By changing the timing of the drive signal for specific transducers, the direction of the source beam can be altered to steer the beam towards or away from certain objects or areas.

    摘要翻译: 提供了一种地震源,其使用合适的低频声学换能器,使得能够使用复杂的啁啾声,同时增加有效功率电平并将峰值功率降低到该有效功率的一部分。 可以使用啁啾的伪随机编码来驱动换能器,该线性调频脉冲在线性调频脉冲内的每个连续脉冲串中改变频率并且啁啾之间的间隔变化以提供伪随机占空比,从而允许多个信号同时存在于水中 具有更广泛的光谱覆盖。 通过改变特定换能器的驱动信号的定时,可以改变源光束的方向以将光束转向或远离某些物体或区域。

    Sugar binding surface
    3.
    发明申请
    Sugar binding surface 审中-公开
    糖结合面

    公开(公告)号:US20060251693A1

    公开(公告)日:2006-11-09

    申请号:US10533063

    申请日:2003-10-29

    IPC分类号: G01N1/28 G01N33/53 G01N33/00

    CPC分类号: G01N33/548

    摘要: The invention provides a method for the immobilisation of at least one type of carbohydrate molecule comprising contacting a surface with a plasma of at least one monomer to provide a plasma polymer coated surface and contacting said polymer surface with a carbohydrate molecule.

    摘要翻译: 本发明提供了一种用于固定至少一种类型的碳水化合物分子的方法,包括使表面与至少一种单体的血浆接触以提供等离子体聚合物涂覆的表面并使所述聚合物表面与碳水化合物分子接触。

    Detecting failures of flexible multistrand steel structures
    5.
    发明申请
    Detecting failures of flexible multistrand steel structures 有权
    检测柔性多股钢结构的失效

    公开(公告)号:US20060145693A1

    公开(公告)日:2006-07-06

    申请号:US10562148

    申请日:2004-06-17

    IPC分类号: G01N27/82

    CPC分类号: G01N27/82 G01N27/83

    摘要: A flexible elongate structure, such as a flexible riser (10), comprising at least one layer (20) of steel wires near the surface which extend at least partly along the length of the structure, can be monitored by inducing a small, alternating magnetic field in the steel wires using an electromagnetic coil, and monitoring the magnetic flux density near the surface of the structure so as to asses the stress and hence detect if any wires have broken. By using an array of stress-measuring electromagnetic probes (24) around the structure some spatial resolution can be provided as to the location of any break in the wires.

    摘要翻译: 柔性细长结构,例如柔性提升管(10),其可包括至少一层沿着结构的长度至少部分延伸的表面附近的钢丝网(20),该层可以通过诱导小的交替磁性 使用电磁线圈对钢丝进行磁场测量,并且监测结构表面附近的磁通密度,以评估应力,从而检测是否有任何电线断裂。 通过使用围绕结构的应力测量电磁探头(24)阵列,可以提供关于电线中任何断裂位置的空间分辨率。

    Measurement with a magnetic field
    6.
    发明申请
    Measurement with a magnetic field 有权
    用磁场测量

    公开(公告)号:US20050001612A1

    公开(公告)日:2005-01-06

    申请号:US10492135

    申请日:2002-10-07

    申请人: David Buttle

    发明人: David Buttle

    摘要: Material properties such as stress in a ferromagnetic material may be measured using an electromagnetic probe. While generating al alternating magnetic field in the object, and sensing the resulting magnetic field with a sensor, the signals from the magnetic sensor may be resolved into in-phase and guadrature components. The signals are affected by both geomaterical parameters such as lift-off any by material properties, but these influences may be separated by mapping the in-phase and quadrature components directly into material property and lift-off components, and hence a material property and/or the lift-off may be determined. The mapping may be represented in the impedance plane as two sets of contours representing signal variation with lift-off (A) (for different values of stress) and signal variation with stress (B) (for different values of liftoff), the contours of both sets (A, B) being curved. The stress contours (B) at a constant angle. Hence calibration measurements taken along a few contours of each set enable.

    摘要翻译: 诸如铁磁材料中的应力的材料特性可以使用电磁探针来测量。 当在物体中产生交变磁场并且用传感器感测所得到的磁场时,来自磁传感器的信号可被分解为同相和脉动分量。 这些信号受到地质参数的影响,例如通过材料性质的剥离,但是这些影响可以通过将同相和正交分量直接映射到材料性质和剥离部件中而分离,因此材料性质和/ 或者可以确定剥离。 映射可以在阻抗平面中表示为两组轮廓,表示具有提升(A)(对于不同的应力值)和信号随应力的变化(B)的信号变化(对于不同的提升值),轮廓线 两组(A,B)均弯曲。 应力轮廓(B)以恒定角度。 因此,沿着每组的几个轮廓进行的校准测量使能。