Towing methods and systems for geophysical surveys
    1.
    发明授权
    Towing methods and systems for geophysical surveys 有权
    用于地球物理勘测的牵引方法和系统

    公开(公告)号:US09217806B2

    公开(公告)日:2015-12-22

    申请号:US13447508

    申请日:2012-04-16

    IPC分类号: G01V1/38 G01V1/20 G01V11/00

    CPC分类号: G01V1/3808 G01V1/20 G01V11/00

    摘要: Disclosed are methods and systems for towing one or more electromagnetic sensor streamers from deflectors in an additional geophysical sensor streamer spread. An embodiment discloses a marine geophysical survey system, comprising: a survey vessel; an electromagnetic sensor streamer; and a geophysical sensor streamer spread configured to be towed by the survey vessel, wherein the geophysical sensor streamer spread comprises: sensor streamers configured to be laterally spaced apart from one another; and deflectors adapted to spread the sensor streamers substantially transversely in relation to a direction of motion of the survey vessel, wherein the electromagnetic sensor streamer is configured to be towed from at least one of the deflectors.

    摘要翻译: 公开了用于在附加的地球物理传感器拖缆传播中从偏转器牵引一个或多个电磁传感器拖缆的方法和系统。 一个实施例公开了一种海洋地球物理测量系统,包括:测量船; 电磁传感器拖缆; 以及构造成由所述测量船拖动的地球物理传感器拖缆,其中所述地球物理传感器拖缆散布包括:被配置成横向间隔开的传感器拖缆; 以及适于相对于所述测量船的运动方向基本上横向地传播所述传感器拖缆的偏转器,其中所述电磁传感器拖缆被配置为从所述偏转器中的至少一个被拖曳。

    Silicon Controlled Rectifier Control of Deep Towed Electromagnetic Source
    2.
    发明申请
    Silicon Controlled Rectifier Control of Deep Towed Electromagnetic Source 有权
    深导电磁源的可控硅整流器控制

    公开(公告)号:US20140253129A1

    公开(公告)日:2014-09-11

    申请号:US13787303

    申请日:2013-03-06

    IPC分类号: G01V3/08

    摘要: A method and apparatus for generating an electromagnetic (EM) field from a sub-sea source is disclosed. In one embodiment, a sub-sea source includes a step-down transformer coupled to receive a sinusoidal source wave via a tow cable, and is further coupled to output a sinusoidal wave to a silicon-controlled rectifier (SCR) circuit. A control circuit coupled to the SCR circuit is configured to selectively activate various ones of the SCRs therein in order to control a portion of the sinusoidal wave that is rectified. The output current provided by the SCR is determined by the portion of the sinusoidal wave that is rectified thereby. The output current is provided to electrodes coupled to the sub-sea source, and the output current is passed therebetween. The strength of the EM field is based on the output current.

    摘要翻译: 公开了一种用于从海底源产生电磁场的方法和装置。 在一个实施例中,一个海底源包括一个降压变压器,它被耦合以经由牵引电缆接收一个正弦波源波,并且还被耦合以将正弦波输出到可控硅整流器(SCR)电路。 耦合到SCR电路的控制电路被配置为选择性地激活其中的各种SCR,以便控制被整流的正弦波的一部分。 由SCR提供的输出电流由被整流的正弦波的部分决定。 输出电流被提供到耦合到海底源的电极,并且输出电流通过它们。 EM场的强度基于输出电流。

    POWER CONVERTER AND ELECTRODE COMBINATIONS FOR ELECTROMAGNETIC SURVEY SOURCE
    3.
    发明申请
    POWER CONVERTER AND ELECTRODE COMBINATIONS FOR ELECTROMAGNETIC SURVEY SOURCE 有权
    电力变压器和电极组合电磁测量源

    公开(公告)号:US20130093426A1

    公开(公告)日:2013-04-18

    申请号:US13274493

    申请日:2011-10-17

    IPC分类号: G01V3/00

    摘要: A marine electromagnetic survey source includes a power cable configured to couple to a high voltage power supply at one axial end and to a head unit at the other axial end. The head unit includes equipment configured to output a lower voltage at higher current than the current imparted thereto by high voltage power supply. The head unit has an electrically conductive exterior coupled to one output terminal of the equipment. An electromagnetic antenna cable having an electrode thereon is coupled to the head unit and configured to receive the output of another terminal of the head unit equipment. In some implementations, electromagnetic fields are induced in formations by conducting current to the equipment. Marine geophysical surveys are conducted utilizing such induction of electromagnetic fields.

    摘要翻译: 海洋电磁勘探源包括配置成在一个轴向端连接到高压电源并在另一个轴向端耦合到头单元的电力电缆。 头单元包括配置为以比通过高压电源赋予的电流更高的电流输出较低电压的设备。 头单元具有耦合到设备的一个输出端子的导电外部。 其上具有电极的电磁天线电缆被耦合到头单元并且被配置为接收头单元设备的另一终端的输出。 在一些实施方案中,通过将电流传导到设备,在地层中诱发电磁场。 利用电磁场的感应进行海洋地球物理勘测。

    High voltage DC power for electromagnetic survey source
    4.
    发明授权
    High voltage DC power for electromagnetic survey source 有权
    用于电磁测量源的高压直流电源

    公开(公告)号:US08797038B2

    公开(公告)日:2014-08-05

    申请号:US12932592

    申请日:2011-03-01

    IPC分类号: G01V3/04

    CPC分类号: G01V3/083

    摘要: A marine electromagnetic survey system includes a power cable configured to couple to a power supply at one axial end, and to a head unit at the other end. The power supply includes a source of direct current which is coupled to the power cable. The head unit includes equipment configured to output a lower voltage at a higher current than the source of direct current. At least one electromagnetic antenna is coupled to the head unit and is configured to receive the output of the head unit equipment.

    摘要翻译: 海洋电磁勘测系统包括配置成在一个轴向端连接到电源的电力电缆,以及另一端的头单元。 电源包括耦合到电力电缆的直流电源。 头单元包括配置成以比直流电源更高的电流输出较低电压的设备。 至少一个电磁天线耦合到头单元并且被配置为接收头单元设备的输出。

    Power converter and electrode combinations for electromagnetic survey source
    5.
    发明授权
    Power converter and electrode combinations for electromagnetic survey source 有权
    用于电磁测量源的功率转换器和电极组合

    公开(公告)号:US09081106B2

    公开(公告)日:2015-07-14

    申请号:US13274493

    申请日:2011-10-17

    IPC分类号: G01V3/00

    摘要: A marine electromagnetic survey source includes a power cable configured to couple to a high voltage power supply at one axial end and to a head unit at the other axial end. The head unit includes equipment configured to output a lower voltage at higher current than the current imparted thereto by high voltage power supply. The head unit has an electrically conductive exterior coupled to one output terminal of the equipment. An electromagnetic antenna cable having an electrode thereon is coupled to the head unit and configured to receive the output of another terminal of the head unit equipment. In some implementations, electromagnetic fields are induced in formations by conducting current to the equipment. Marine geophysical surveys are conducted utilizing such induction of electromagnetic fields.

    摘要翻译: 海洋电磁勘探源包括配置成在一个轴向端连接到高压电源并在另一个轴向端耦合到头单元的电力电缆。 头单元包括配置为以比通过高压电源赋予的电流更高的电流输出较低电压的设备。 头单元具有耦合到设备的一个输出端子的导电外部。 其上具有电极的电磁天线电缆被耦合到头单元并且被配置为接收头单元设备的另一终端的输出。 在一些实施方案中,通过将电流传导到设备,在地层中诱发电磁场。 利用电磁场的感应进行海洋地球物理勘测。

    Towing Methods and Systems for Geophysical Surveys
    6.
    发明申请
    Towing Methods and Systems for Geophysical Surveys 有权
    地球物理勘测牵引方法与系统

    公开(公告)号:US20130272090A1

    公开(公告)日:2013-10-17

    申请号:US13447508

    申请日:2012-04-16

    IPC分类号: G01V1/38 G01V1/20

    CPC分类号: G01V1/3808 G01V1/20 G01V11/00

    摘要: Disclosed are methods and systems for towing one or more electromagnetic sensor streamers from deflectors in an additional geophysical sensor streamer spread. An embodiment discloses a marine geophysical survey system, comprising: a survey vessel; an electromagnetic sensor streamer; and a geophysical sensor streamer spread configured to be towed by the survey vessel, wherein the geophysical sensor streamer spread comprises: sensor streamers configured to be laterally spaced apart from one another; and deflectors adapted to spread the sensor streamers substantially transversely in relation to a direction of motion of the survey vessel, wherein the electromagnetic sensor streamer is configured to be towed from at least one of the deflectors.

    摘要翻译: 公开了用于在附加的地球物理传感器拖缆传播中从偏转器牵引一个或多个电磁传感器拖缆的方法和系统。 一个实施例公开了一种海洋地球物理测量系统,包括:测量船; 电磁传感器拖缆; 以及构造成由所述测量船拖动的地球物理传感器拖缆,其中所述地球物理传感器拖缆散布包括:被配置成横向间隔开的传感器拖缆; 以及适于相对于所述测量船的运动方向基本上横向地传播所述传感器拖缆的偏转器,其中所述电磁传感器拖缆被配置为从所述偏转器中的至少一个被拖曳。

    High voltage DC power for electromagnetic survey source
    7.
    发明申请
    High voltage DC power for electromagnetic survey source 有权
    用于电磁测量源的高压直流电源

    公开(公告)号:US20120223718A1

    公开(公告)日:2012-09-06

    申请号:US12932592

    申请日:2011-03-01

    IPC分类号: G01V3/15

    CPC分类号: G01V3/083

    摘要: A marine electromagnetic survey system includes a power cable configured to couple to a power supply at one axial end, and to a head unit at the other end. The power supply includes a source of direct current which is coupled to the power cable. The head unit includes equipment configured to output a lower voltage at a higher current than the source of direct current. At least one electromagnetic antenna is coupled to the head unit and is configured to receive the output of the head unit equipment.

    摘要翻译: 海洋电磁勘测系统包括配置成在一个轴向端连接到电源的电力电缆,以及另一端的头单元。 电源包括耦合到电力电缆的直流电源。 头单元包括配置成以比直流电源更高的电流输出较低电压的设备。 至少一个电磁天线耦合到头单元并且被配置为接收头单元设备的输出。