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1.发明申请ELECTROMAGNETIC AND SEISMIC STREAMER CABLE AND METHOD FOR USING SUCH A STREAMER CABLE 审中-公开电磁和地震流线电缆及使用这种流线电缆的方法
公开(公告)号：WO2010002263A3
公开(公告)日：2010-07-15
申请号：PCT/NO2009000097
申请日：2009-03-16
Applicant: MULTIFIELD GEOPHYSICS AS , JOHNSTAD SVEIN ERLING
Inventor： JOHNSTAD SVEIN ERLING
IPC: G01V11/00
CPC classification number: G01V11/00 , G01V1/201 , G01V3/083 , G01V3/12 , G01V2210/6163
Abstract: The invention is a marine geophysical sensor cable (1) with one or more sensor cable sections (2), - each of said sensor cable sections (2) provided with seimic and electromagnetic sensors (10, 20) arranged along said cable (1), - the seismic sensors (10) comprising a hydrophone (11) and a seismic component receiver (12) for seimic vector measurments while said sensor cable (1) being at the seafloor, - the electromagnetic sensors (20) comprising both E-field sensors (22) and H-field sensors (24) - said E-field sensors (22) comprising pairs of first and second electrodes (22a, 22b) arranged with different positions along the cable (1) and connected to a voltage amplifier (23), - The H-field sensors (24) comprising three mutually orthogonally arranged H-field component sensors (24x, 24y, 24z).
Abstract translation: 本发明是具有一个或多个传感器电缆部分（2）的海洋地球物理传感器电缆（1）， - 所述传感器电缆部分（2）中的每一个设置有沿着所述电缆（1）布置的有线和电磁传感器（10,20） ， - 当所述传感器电缆（1）位于海底时，所述地震传感器（10）包括用于海底矢量测量的水听器（11）和地震部件接收器（12）， - 所述电磁传感器（20）包括电场 （22）和H场传感器（24） - 所述E场传感器（22）包括成对的第一和第二电极（22a，22b），所述成对的第一和第二电极沿着所述电缆（1）布置有不同的位置并且连接到电压放大器 - 所述H场传感器（24）包括三个相互正交布置的H场分量传感器（24x，24y，24z）。
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2.发明申请ELECTROMAGNETIC AND SEISMIC STREAMER CABLE AND METHOD FOR USING SUCH A STREAMER CABLE 审中-公开电磁和地震电缆电缆及其使用方法
公开(公告)号：WO2010002263A2
公开(公告)日：2010-01-07
申请号：PCT/NO2009/000097
申请日：2009-03-16
Applicant: MultiField Geophysics AS , JOHNSTAD, Svein, Erling
Inventor： JOHNSTAD, Svein, Erling
CPC classification number: G01V11/00 , G01V1/201 , G01V3/083 , G01V3/12 , G01V2210/6163
Abstract: The invention is a marine geophysical sensor cable (1) with one or more sensor cable sections (2), - each of said sensor cable sections (2) provided with seimic and electromagnetic sensors (10, 20) arranged along said cable (1), - the seismic sensors (10) comprising a hydrophone (11) and a seismic component receiver (12) for seimic vector measurments while said sensor cable (1) being at the seafloor, - the electromagnetic sensors (20) comprising both E-field sensors (22) and H-field sensors (24) - said E-field sensors (22) comprising pairs of first and second electrodes (22a, 22b) arranged with different positions along the cable (1) and connected to a voltage amplifier (23), - The H-field sensors (24) comprising three mutually orthogonally arranged H-field component sensors (24x, 24y, 24z).
Abstract translation: 本发明是一种具有一个或多个传感器电缆部分（2）的海洋地球物理传感器电缆（1）， - 每个所述传感器电缆部分（2）设置有沿着所述电缆（1）布置的感性和电磁传感器（10,20） ， - 所述地震传感器（10）包括水听器（11）和地震成分接收器（12），用于在所述传感器电缆（1）处于海底时进行神经矢量测量，所述电磁传感器（20）包括两个E场 传感器（22）和H场传感器（24） - 所述E场传感器（22）包括沿着电缆（1）布置有不同位置的第一和第二电极对（22a，22b），并连接到电压放大器 23），H场传感器（24）包括三个相互正交排列的H场分量传感器（24x，24y，24z）。
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公开(公告)号：EP1987375B1
公开(公告)日：2012-12-12
申请号：EP07709226.0
申请日：2007-02-12
Applicant: Multifield Geophysics AS
CPC classification number: G01V3/12 , G01V3/083 , Y02A90/344
Abstract: A method for analyzing acquired electromagnetic measurements (R) made at or in a sea (4) over a seafloor (1) with rock formations (3) having relatively low resistivity (&rgr;3) for detecting a possibly underlying petroleum bearing reservoir formation (2) having relatively high resistivity (&rgr;2), wherein a low frequency electromagnetic transmitter (5) arranged in the sea (4) emits an electromagnetic field (P) propagating in the sea (4), in the rocks (3, 2) and in the air (0) above the sea; wherein electromagnetic sensors (6) are arranged with desired offsets (x) in the sea (4) for measuring the electromagnetic field (P(x)) while the field propagates, characterized in that one or more component of the electromagnetic field (P) is measured at least one large offset (xL) from the transmitter (5) where the field (P) essentially only has its origin from the field propagating as a field (P0) through the air (0); that the one or more components of the electromagnetic field (P) measured at the large offset (xL) is calculated back to a recalculated field (F0(x)) to one or more offsets (x) being shorter than the large offset (xL); that the recalculated field (P0(X)) is subtracted from the field (P(x)) for possibly highlighting a field which arising due to the possibly petroleum bearing reservoir formation (2) having relatively high resistivity (&rgr;2).
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公开(公告)号：EP1987375A4
公开(公告)日：2012-05-09
申请号：EP07709226
申请日：2007-02-12
Applicant: MULTIFIELD GEOPHYSICS AS
Inventor： WESTERDAHL HARALD , JOHNSTAD SVEIN ERLING , FARRELLY BRIAN ANTHONY
CPC classification number: G01V3/12 , G01V3/083 , Y02A90/344
Abstract: A method for analyzing acquired electromagnetic measurements (R) made at or in a sea (4) over a seafloor (1) with rock formations (3) having relatively low resistivity (&rgr;3) for detecting a possibly underlying petroleum bearing reservoir formation (2) having relatively high resistivity (&rgr;2), wherein a low frequency electromagnetic transmitter (5) arranged in the sea (4) emits an electromagnetic field (P) propagating in the sea (4), in the rocks (3, 2) and in the air (0) above the sea; wherein electromagnetic sensors (6) are arranged with desired offsets (x) in the sea (4) for measuring the electromagnetic field (P(x)) while the field propagates, characterized in that one or more component of the electromagnetic field (P) is measured at least one large offset (xL) from the transmitter (5) where the field (P) essentially only has its origin from the field propagating as a field (P0) through the air (0); that the one or more components of the electromagnetic field (P) measured at the large offset (xL) is calculated back to a recalculated field (F0(x)) to one or more offsets (x) being shorter than the large offset (xL); that the recalculated field (P0(X)) is subtracted from the field (P(x)) for possibly highlighting a field which arising due to the possibly petroleum bearing reservoir formation (2) having relatively high resistivity (&rgr;2).
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5.发明公开ELECTROMAGNETIC AND SEISMIC STREAMER CABLE AND METHOD FOR USING SUCH A STREAMER CABLE 审中-公开电磁和地震拖缆和使用这种拖缆方法
公开(公告)号：EP2307913A2
公开(公告)日：2011-04-13
申请号：EP09773796.9
申请日：2009-03-16
Applicant: Multifield Geophysics AS
Inventor： JOHNSTAD, Svein, Erling
IPC: G01V11/00
CPC classification number: G01V11/00 , G01V1/201 , G01V3/083 , G01V3/12 , G01V2210/6163
Abstract: A geophysical sensor cable has one or more sensor cable sections. Each of the sensor cable sections is provided with seismic and electromagnetic sensors arranged along said cable. The seismic sensors include a hydrophone and a seismic component receiver for seismic vector measurements while the sensor cable is at the sea-floor. The electromagnetic sensors include both E-field sensors and H-field sensors. The E-field sensors include pairs of first and second electrodes arranged with different positions along the cable and connected to a voltage amplifier. The H-field sensors include three mutually orthogonally arranged H-field component sensors.
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Patent Agency Ranking
公开(公告)号：EP1987375A1
公开(公告)日：2008-11-05
申请号：EP07709226.0
申请日：2007-02-12
Applicant: Multifield Geophysics AS
CPC classification number: G01V3/12 , G01V3/083 , Y02A90/344
Abstract: A method for analyzing acquired electromagnetic measurements (R) made at or in a sea (4) over a seafloor (1) with rock formations (3) having relatively low resistivity (&rgr;3) for detecting a possibly underlying petroleum bearing reservoir formation (2) having relatively high resistivity (&rgr;2), wherein a low frequency electromagnetic transmitter (5) arranged in the sea (4) emits an electromagnetic field (P) propagating in the sea (4), in the rocks (3, 2) and in the air (0) above the sea; wherein electromagnetic sensors (6) are arranged with desired offsets (x) in the sea (4) for measuring the electromagnetic field (P(x)) while the field propagates, characterized in that one or more component of the electromagnetic field (P) is measured at least one large offset (xL) from the transmitter (5) where the field (P) essentially only has its origin from the field propagating as a field (P0) through the air (0); that the one or more components of the electromagnetic field (P) measured at the large offset (xL) is calculated back to a recalculated field (F0(x)) to one or more offsets (x) being shorter than the large offset (xL); that the recalculated field (P0(X)) is subtracted from the field (P(x)) for possibly highlighting a field which arising due to the possibly petroleum bearing reservoir formation (2) having relatively high resistivity (&rgr;2).
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公开(公告)号：NO20083018L
公开(公告)日：2010-01-05
申请号：NO20083018
申请日：2008-07-04
Applicant: MULTIFIELD GEOPHYSICS AS
Inventor： JOHNSTAD SVEIN ERLING
IPC: G01V11/00
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公开(公告)号：CA2642633C
公开(公告)日：2013-07-02
申请号：CA2642633
申请日：2007-02-12
Applicant: MULTIFIELD GEOPHYSICS AS
Inventor： WESTERDAHL HARALD , JOHNSTAD SVEIN ERLING , FARRELLY BRIAN ANTHONY
Abstract: A method for analysing acquired electromagnetic measurements (R) made at or in a sea (4) over a seafloor (1) with rock formations (3) having relatively low resistivity (.rho.3) for detecting a possibly underlying petroleum bearing reservoir formation (2) having relatively high resistivity (.rho.2), wherein a low frequency electromagnetic transmitter (5) arranged in the sea (4) emits an electromagnetic field (P) propagating in the sea (4), in the rocks (3, 2) and in the air (0) above the sea; wherein electromagnetic sensors (6) are arranged with desired offsets (x) in the sea (4) for measuring the electromagnetic field (P(x)) while the field propagates, characterized in that one or more component of the electromagnetic field (P) is measured at least one large offset (xL) from the transmitter (5) where the field (P) essentially only has its origin from the field propagating as a field (P0) through the air (0); that the one or more components of the electromagnetic field (P) measured at the large offset (xL) is calculated back to a recalculated field (F0(x)) to one or more offsets (x) being shorter than the large offset (xL); that the recalculated field (P0(X)) is subtracted from the field (P(x)) for possibly highlighting a field which arising due to the possibly petroleum bearing reservoir formation (2) having relatively high resistivity (.rho.2).
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公开(公告)号：AU2007215628B2
公开(公告)日：2011-12-22
申请号：AU2007215628
申请日：2007-02-12
Applicant: MULTIFIELD GEOPHYSICS AS
Inventor： ERLING JOHNSTAD SVEIN , HARALD WESTERDAHL , ANTHONY FARRELLY BRIAN
Abstract: A method for analysing acquired electromagnetic measurements (R) made at or in a sea (4) over a seafloor (1) with rock formations (3) having relatively low resistivity (&rgr;) for detecting a possibly underlying petroleum bearing reservoir formation (2) having relatively high resistivity (&rgr;), wherein a low frequency electromagnetic transmitter (5) arranged in the sea (4) emits an electromagnetic field (P) propagating in the sea (4), in the rocks (3, 2) and in the air (0) above the sea; wherein electromagnetic sensors (6) are arranged with desired offsets (x) in the sea (4) for measuring the electromagnetic field (P(x)) while the field propagates, characterized in that one or more component of the electromagnetic field (P) is measured at least one large offset (x) from the transmitter (5) where the field (P) essentially only has its origin from the field propagating as a field (P) through the air (0); that the one or more components of the electromagnetic field (P) measured at the large offset (x) is calculated back to a recalculated field (F(x)) to one or more offsets (x) being shorter than the large offset (x); that the recalculated field (P(X)) is subtracted from the field (P(x)) for possibly highlighting a field which arising due to the possibly petroleum bearing reservoir formation (2) having relatively high resistivity (&rgr;).
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公开(公告)号：BRPI0707773A2
公开(公告)日：2011-05-10
申请号：BRPI0707773
申请日：2007-02-12
Applicant: MULTIFIELD GEOPHYSICS AS
Inventor： WESTERDAHL HARALD , JOHNSTAD SVEIN ERLING , FARRELY BRIAN ANTHONY
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