System and method for determining positions of towed marine seismic streamers
    51.
    发明授权
    System and method for determining positions of towed marine seismic streamers 有权
    确定拖曳海洋地震拖缆位置的系统和方法

    公开(公告)号:US07376045B2

    公开(公告)日:2008-05-20

    申请号:US11256390

    申请日:2005-10-21

    CPC classification number: G01V1/3835 G01S15/46 G01S2015/465

    Abstract: A system comprises a plurality of acoustic transmitters, mounted inside the streamers, adapted to transmit broadband signals having low cross-correlation between the signals of different transmitters; a plurality of acoustic receivers, mounted inside the streamers, adapted to receive the signals from the transmitters; at least one processor adapted to cross-correlate the signals received at the receivers with copies of transmitter signals to determine identities of the transmitters of the received signals and to determine travel times of the received signals; and a main processor adapted to convert the travel times to distances between the identified transmitters and the receivers and to determine relative positions of the streamers from the distances.

    Abstract translation: 一种系统包括安装在拖缆内的多个声发射器,适于发射在不同发射机的信号之间具有低互相关的宽带信号; 多个声音接收器,安装在拖缆内,适于接收来自发射器的信号; 至少一个处理器,其适于将在接收机处接收的信号与发射机信号的副本进行交叉相关,以确定接收信号的发射机的标识并确定接收到的信号的行进时间; 以及主处理器,其适于将所述行进时间转换为所识别的发射器与所述接收器之间的距离,并且从所述距离确定所述拖缆的相对位置。

    System for combining signals of pressure sensors and particle motion sensors in marine seismic streamers
    52.
    发明授权
    System for combining signals of pressure sensors and particle motion sensors in marine seismic streamers 有权
    用于组合海洋地震拖缆中压力传感器和颗粒运动传感器信号的系统

    公开(公告)号:US07359283B2

    公开(公告)日:2008-04-15

    申请号:US10792510

    申请日:2004-03-03

    CPC classification number: G01V1/3808

    Abstract: Signals of pressure sensors and particle motion sensors located in marine seismic streamers are combined to generate pressure sensor data and particle motion data with substantially the same broad bandwidth. The noisy low frequency part of the motion signals are calculated from the recorded pressure signals and merged with the non-noisy motion signals. The two broad bandwidth data sets can then be combined to calculate the full up- and down-going wavefields.

    Abstract translation: 位于海洋地震拖缆中的压力传感器和颗粒运动传感器的信号被组合以产生具有基本上相同的宽带宽的压力传感器数据和粒子运动数据。 运动信号的噪声低频部分由记录的压力信号计算,并与非噪声运动信号合并。 然后可以组合两个宽带宽数据集,以计算完整的上下波场。

    Apparatus and methods for multicomponent marine geophysical data gathering
    53.
    发明授权
    Apparatus and methods for multicomponent marine geophysical data gathering 有权
    多组分海洋地球物理数据采集的装置和方法

    公开(公告)号:US07239577B2

    公开(公告)日:2007-07-03

    申请号:US10233266

    申请日:2002-08-30

    CPC classification number: G01V1/181 G01V1/185 G01V1/189 G01V1/3808 G01V2210/56

    Abstract: In one embodiment the invention comprises a particle velocity sensor that includes a housing with a geophone mounted in the housing. A fluid that substantially surrounds the geophone is included within the housing. The particle velocity sensor has an acoustic impedance within the range of about 750,000 Newton seconds per cubic meter (Ns/m3) to about 3,000,000 Newton seconds per cubic meter (Ns/m3). In another embodiment the invention comprises method of geophysical exploration in which a seismic signal is generated in a body of water and detected with a plurality of co-located particle velocity sensors and pressure gradient sensors positioned within a seismic cable. The output signal of either or both of the particle velocity sensors or the pressure gradient sensors is modified to substantially equalize the output signals from the particle velocity sensors and the pressure gradient sensors. The output signals from particle velocity sensors and pressure gradient sensors are then combined.

    Abstract translation: 在一个实施例中,本发明包括粒子速度传感器,其包括具有安装在壳体中的地震检波器的壳体。 基本上围绕地震检波器的流体包括在壳体内。 粒子速度传感器的声阻抗在每立方米约750,000牛顿秒(Ns / m 3)至约3,000,000牛顿秒/立方米(Ns / m 3 / SUP>)。 在另一个实施例中,本发明包括地球物理勘探方法,其中在水体中产生地震信号并且利用位于地震缆索内的多个共同定位的粒子速度传感器和压力梯度传感器进行检测。 粒子速度传感器或压力梯度传感器中的任一个或两者的输出信号被修改为基本上均衡来自粒子速度传感器和压力梯度传感器的输出信号。 然后组合来自粒子速度传感器和压力梯度传感器的输出信号。

    Apparatus and method for bubble shielding towed marine cable
    54.
    发明授权
    Apparatus and method for bubble shielding towed marine cable 有权
    用于气泡屏蔽拖缆船用电缆的设备和方法

    公开(公告)号:US06982926B2

    公开(公告)日:2006-01-03

    申请号:US10264364

    申请日:2002-10-04

    CPC classification number: B63B1/38 B63B21/66 Y02T70/122

    Abstract: A cable for towing marine devices is disclosed. The cable includes a strength member and at least one conduit associated with the strength member. The conduit has apertures therein at selected locations along the conduit. The apertures are adapted to conduct gas from a source into water in which the cable is disposed. Also disclosed is a method for improving the flow of a cable through water. The method includes releasing a gaseous bubble stream proximate an outer surface of said cable while the water is moving relative to the cable.

    Abstract translation: 公开了一种用于牵引船用装置的电缆。 电缆包括强度构件和与强度构件相关联的至少一个导管。 导管在沿着导管的选定位置处具有孔。 这些孔适于将来自源的气体输送到其中设置电缆的水中。 还公开了一种改善电缆通过水流的方法。 该方法包括在水相对于电缆运动的同时释放靠近所述电缆的外表面的气泡流。

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