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    CONTROL SYSTEM FOR A MARINE VIBRATOR
    3.
    发明公开
    CONTROL SYSTEM FOR A MARINE VIBRATOR 审中-公开
    海洋振动器控制系统

    公开(公告)号：EP3232231A1

    公开(公告)日：2017-10-18

    申请号：EP17166773.6

    申请日：2017-04-18

    申请人： PGS Geophysical AS

    发明人： TENGHAMN, Stig Rune Lennart

    IPC分类号： G01V1/00 ,  G01V1/38

    摘要： Disclosed are control systems for marine vibrators. An example method may comprise recording a signal at a seismic sensor; running an iterative learning control characterization for a marine vibrator on the signal from the seismic sensor; measuring movement of an outer shell of the marine vibrator using a motion sensor to obtain a motion sensor signal; and controlling the marine vibrator using the motion sensor signal as a reference signal.

    摘要翻译： 公开了用于海洋振动器的控制系统。 示例方法可以包括在地震传感器处记录信号; 对来自地震传感器的信号运行海洋振动器的迭代学习控制表征; 使用运动传感器测量海洋振动器的外壳的运动以获得运动传感器信号; 以及使用运动传感器信号作为参考信号来控制海上振动器。

    STEERABLE MARINE GEOPHYSICAL SOURCE
    5.
    发明公开
    STEERABLE MARINE GEOPHYSICAL SOURCE 审中-公开

    公开(公告)号：EP3336585A1

    公开(公告)日：2018-06-20

    申请号：EP17206894.2

    申请日：2017-12-13

    申请人： PGS Geophysical AS

    发明人： MATTSSON, Anders Goran ,  TENGHAMN, Stig Rune Lennart

    IPC分类号： G01V1/38 ,  G01V1/145 ,  G01V1/04

    CPC分类号： G01V1/3826 ,  G01V1/04 ,  G01V1/145 ,  G01V3/15 ,  G01V2210/1214

    摘要： A method for geophysical source steering including towing (610) a first geophysical source through a body of water; and adjusting (620) a first steering parameter of the first geophysical source while towing the first geophysical source. An apparatus for geophysical source steering including a first marine vibrator source having a first housing structure; a first vibrational surface (110) functionally coupled to the first housing structure such that at least a portion of the first vibrational surface can vibrate relative to the first housing structure; and first steering control equipment.

    MATCHING COMBINED SENSITIVITIES OF ARRAYS OF HYDROPHONES
    9.
    发明公开
    MATCHING COMBINED SENSITIVITIES OF ARRAYS OF HYDROPHONES 审中-公开
    匹配虹吸阵列的组合灵敏度

    公开(公告)号：EP3312638A1

    公开(公告)日：2018-04-25

    申请号：EP17197179.9

    申请日：2017-10-18

    申请人： PGS Geophysical AS

    发明人： TENGHAMN, Stig Rune Lennart

    IPC分类号： G01V1/16 ,  G01V1/18 ,  G01V1/38 ,  G01V13/00

    CPC分类号： G01V1/186 ,  G01V1/162 ,  G01V1/201 ,  G01V1/38 ,  G01V13/00 ,  G01V2210/1423

    摘要： A system can include a first array of hydrophones and a second array of hydrophones. Each of the hydrophones can include a first detector and a second detector. A sensitivity of the first detector can be matched with a sensitivity of the second detector and a combined sensitivity of the first array of hydrophones can be matched with a combined sensitivity of the second array of hydrophones.

    摘要翻译： 系统可以包括第一阵列的水听器和第二阵列的水听器。 每个水听器可以包括第一检测器和第二检测器。 第一检测器的灵敏度可以与第二检测器的灵敏度匹配，并且第一阵列的水听器的组合灵敏度可以与第二阵列的水听器的组合灵敏度匹配。

    METHOD FOR CALIBRATING THE FAR-FIELD ACOUSTIC OUTPUT OF A MARINE VIBRATOR
    10.
    发明公开
    METHOD FOR CALIBRATING THE FAR-FIELD ACOUSTIC OUTPUT OF A MARINE VIBRATOR 审中-公开
    方法校准所述远场声OPTICS甲SEEVIBRATORS作者

    公开(公告)号：EP3090283A1

    公开(公告)日：2016-11-09

    申请号：EP14821677.3

    申请日：2014-12-30

    申请人： PGS Geophysical AS

    发明人： TENGHAMN, Stig Rune Lennart ,  BERNHARDSSON, Bo Magnus ,  KRÖLING, Nils Gunnar Olof ,  GUNNARSSON, Per Birger

    IPC分类号： G01V1/38 ,  G01V1/143

    摘要： Techniques are disclosed relating to control of seismic sources such as marine vibrators. According to some embodiments, iterative learning control (ILC) systems may be used to control such vibrator including an excitation signal and seismic sources. According to some embodiments, a control unit provides first input signals to the marine vibrator which include an excitation signal and a high-amplitude, low-frequency signal, the latter is operable to decrease friction effects in the marine vibrator. Furthermore local sensor(s) placed in, on, or near a seismic source and/or remote sensors placed in the far-field region to measure the acoustic output of the marine vibrator. The control unit is further configured to generate initial values for a transfer function of the marine vibrator based on the measured acoustic output.