公开(公告)号：US20150035537A1

公开(公告)日：2015-02-05

申请号：US14518233

申请日：2014-10-20

Applicant: PGS Geophysical AS

Inventor： Andras Robert Juhasz ,  Gustav Göran Mattias Südow ,  Ulf Peter Lindqvist

IPC: G01V3/08

CPC classification number: G01V3/083 ,  Y02A90/344

Abstract: An electromagnetic survey acquisition system includes a sensor cable and a source cable, each deployable in a body of water, and a recording system. The sensor cable includes an electromagnetic sensor thereon. The source cable includes an electromagnetic antenna thereon. The recording system includes a source current generator, a current sensor, and an acquisition controller. The source current generator powers the source cable to emit an electromagnetic field from the antenna. The current sensor is coupled to the source current generator. The acquisition controller interrogates the electromagnetic sensor and the current sensor at selected times in a synchronized fashion.

Abstract translation: 电磁勘测采集系统包括传感器电缆和源电缆，每个电缆可部署在水体中，以及记录系统。 传感器电缆在其上包括电磁传感器。 源电缆在其上包括电磁天线。 记录系统包括源电流发生器，电流传感器和采集控制器。 源电流发生器为源电缆供电从天线发出电磁场。 电流传感器耦合到源电流发生器。 采集控制器以选择的时间同步地询问电磁传感器和电流传感器。

公开(公告)号：US20140266216A1

公开(公告)日：2014-09-18

申请号：US13828239

申请日：2013-03-14

Applicant: PGS GEOPHYSICAL AS

Inventor： Ulf Peter Lindqvist ,  Andras Robert Juhasz ,  Rune Johan Magnus Mattsson ,  Lars Erik Magnus Bjornemo

IPC: G01V13/00 ,  G01V3/12

CPC classification number: G01V3/12 ,  G01V3/083 ,  G01V3/15

Abstract: Disclosed are methods and systems for suppression of noise in electromagnetic surveying that includes stacking two or more frames of electromagnetic data. An example embodiment discloses a method for suppressing swell-induced noise in an electromagnetic survey, comprising: measuring an electromagnetic field parameter at one or more positions to provide an electromagnetic signal, the electromagnetic signal comprising a swell-induced portion; and stacking two or more frames of the electromagnetic signal to provide a stacked signal in which the swell-induced portion is suppressed, wherein the swell-induced portion is out of phase between the two or more frames.

Abstract translation: 公开了用于抑制电磁勘测中的噪声的方法和系统，包括堆叠两个或更多个电磁数据帧。 一个示例性实施例公开了一种用于抑制电磁勘测中的膨胀引起的噪声的方法，包括：测量一个或多个位置处的电磁场参数以提供电磁信号，所述电磁信号包括溶胀诱发部分; 并且堆叠电磁信号的两个或更多个帧以提供其中抑制了溶胀诱发部分的堆叠信号，其中膨胀诱发部分在两个或更多个帧之间不相位。

公开(公告)号：US09798029B2

公开(公告)日：2017-10-24

申请号：US14708414

申请日：2015-05-11

Applicant: PGS Geophysical AS

Inventor： Andras Robert Juhasz ,  Gustav Göran Mattias Südow ,  Rune Johan Magnus Mattsson ,  Ulf Peter Lindqvist

IPC: G01V1/38 ,  G01V1/36 ,  G01V1/20

CPC classification number: G01V1/362 ,  G01V1/201 ,  G01V2001/204 ,  G01V2001/205 ,  G01V2210/1423 ,  G01V2210/32

Abstract: A sensor streamer stretch section. At least some of the example embodiments are methods including measuring at least one parameter related to noise while towing the sensor streamer through a body of water with a towing vessel, and adjusting at least one of a spring constant and a damping coefficient of a stretch section disposed proximate the sensor streamer such that the measured parameter is minimized.

公开(公告)号：US20170059502A1

公开(公告)日：2017-03-02

申请号：US15239628

申请日：2016-08-17

Applicant: PGS Geophysical AS

Inventor： Andras Robert Juhasz ,  Ulf Peter Lindqvist

IPC: G01N27/04 ,  G01V3/15

CPC classification number: G01R27/08 ,  G01N17/00 ,  G01N17/02 ,  G01N27/04 ,  G01V3/02 ,  G01V3/15 ,  G01V13/00 ,  Y02A90/342 ,  Y02A90/344

Abstract: A system and method is provided for identifying degrading electrodes in a marine electromagnetic survey system. A system may comprise a sensor array operable for use in a marine electromagnetic survey system, wherein the sensor array comprises a plurality of electrodes. The system may comprise a shunt resistor connected to the electrodes and a processor operable to vary a resistance of the shunt resistor in the presence of a voltage across the electrodes. A method for identifying degrading electrodes may comprise measuring an electric field in a body of water with a pair of electrodes, wherein a shunt resistor is connected between the pair of electrodes. The method may comprise varying a resistance of the shunt resistor. The method may comprise measuring a voltage across the shunt resistor while varying the resistance of the shunt resistor to obtain measured voltages for different shunt resistor values. The method may comprise comparing the measured voltages of the different shunt resistor values to calculate resistance of the pair of electrodes.

Abstract translation: 提供了用于识别海洋电磁勘测系统中的降解电极的系统和方法。 系统可以包括可操作用于海洋电磁勘测系统的传感器阵列，其中传感器阵列包括多个电极。 该系统可以包括连接到电极的分流电阻器和可操作以在存在电极两端的电压的情况下改变分流电阻器的电阻的处理器。 用于识别降解电极的方法可以包括用一对电极测量水体中的电场，其中分流电阻器连接在所述一对电极之间。 该方法可以包括改变分流电阻器的电阻。 该方法可以包括测量分流电阻器两端的电压，同时改变分流电阻器的电阻以获得用于不同分流电阻器值的测量电压。 该方法可以包括比较不同分流电阻值的测量电压以计算该对电极的电阻。

公开(公告)号：US09459368B2

公开(公告)日：2016-10-04

申请号：US14518233

申请日：2014-10-20

Applicant: PGS Geophysical AS

Inventor： Andras Robert Juhasz ,  Gustav Göran Mattias Südow ,  Ulf Peter Lindqvist

IPC: G01V3/08

CPC classification number: G01V3/083 ,  Y02A90/344

Abstract: An electromagnetic survey acquisition system includes a sensor cable and a source cable, each deployable in a body of water, and a recording system. The sensor cable includes an electromagnetic sensor thereon. The source cable includes an electromagnetic antenna thereon. The recording system includes a source current generator, a current sensor, and an acquisition controller. The source current generator powers the source cable to emit an electromagnetic field from the antenna. The current sensor is coupled to the source current generator. The acquisition controller interrogates the electromagnetic sensor and the current sensor at selected times in a synchronized fashion.

公开(公告)号：US20150241585A1

公开(公告)日：2015-08-27

申请号：US14708414

申请日：2015-05-11

Applicant: PGS Geophysical AS

Inventor： Andras Robert Juhasz ,  Gustav Göran Mattias Südow ,  Rune Johan Magnus Mattsson ,  Ulf Peter Lindqvist

IPC: G01V1/36 ,  G01V1/20

CPC classification number: G01V1/362 ,  G01V1/201 ,  G01V2001/204 ,  G01V2001/205 ,  G01V2210/1423 ,  G01V2210/32

Abstract: A sensor streamer stretch section includes at least one spring. A means for coupling the spring at each end to at least one of a sensor streamer and a lead in cable is included. A cable is coupled at its ends to the means for coupling. The cable is capable of carrying at least one of electrical and optical signals. The cable is formed such that the cable undergoes substantially no axial strain when the shock cord is elongated. An adjustable damper is coupled between the means for coupling at each end of the stretch section.

Abstract translation: 传感器拖缆伸展部分包括至少一个弹簧。 包括用于将每个端部处的弹簧耦合到传感器拖缆和电缆中的引线中的至少一个的装置。 电缆在其端部连接到用于联接的装置。 电缆能够携带至少一个电信号和光信号。 电缆形成为使得当电击绳被拉长时，电缆基本上不经受轴向应变。 可调节阻尼器联接在用于在拉伸部分的每个端部处联接的装置。