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公开(公告)号：US20090278541A1
公开(公告)日：2009-11-12
申请号：US12223914
申请日：2007-02-12
IPC分类号： G01V3/00
CPC分类号： G01V3/12 , G01V3/083 , Y02A90/344
摘要： 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 (ρ3) for detecting a possibly underlying petroleum bearing reservoir formation (2) having relatively high resistivity (ρ2), 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 (ρ2).
摘要翻译： 一种用于分析在具有相对较低电阻率（rho3）的岩层（3）的海底（1）上或在海上（4）制造的获取的电磁测量（R）的方法，用于检测可能的潜在石油轴承储层形成（2） 具有相对较高的电阻率（rho2），其中布置在海中的低频电磁发射器（5）发射在海中（4）中传播的电磁场（P），在岩石（3,2）和 海上空气（0） 其中电磁传感器（6）在场传播时在海（4）中以希望的偏移（x）布置以测量电磁场（P（x）），其特征在于，电磁场（P）的一个或多个分量 测量来自发射机（5）的至少一个大偏移（xL），其中场（P）基本上仅具有通过空气（0）作为场（P0）传播的场的起点; 在大偏移（xL）处测量的电磁场（P）的一个或多个分量被计算回到重新计算的场（F0（x））到一个或多个偏移量（x）短于大偏移（xL ）; 重新计算的场（P0（X））从场（P（x））中减去，可能突出显示由于具有相对高的电阻率（rho2）的石油轴承储层形成（2）而引起的场。
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公开(公告)号：US07982465B2
公开(公告)日：2011-07-19
申请号：US12223914
申请日：2007-02-12
CPC分类号： G01V3/12 , G01V3/083 , Y02A90/344
摘要： 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 (ρ3) for detecting a possibly underlying petroleum bearing reservoir formation (2) having relatively high resistivity (ρ2), 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 (ρ2).
摘要翻译： 一种用于分析在具有相对低电阻率（3）的岩层（3）的海底（1）上或在海上（4）制造的获取的电磁测量（R）的方法，用于检测可能的潜在石油轴承储层形成 2）具有相对高的电阻率（2），其中布置在海中的低频电磁发射器（5）在岩石（3,2）中发射在海中传播的电磁场（P） ）和在海上的空气（0）; 其中电磁传感器（6）在场传播时在海（4）中以希望的偏移（x）布置以测量电磁场（P（x）），其特征在于，电磁场（P）的一个或多个分量 测量来自发射机（5）的至少一个大偏移（xL），其中场（P）基本上仅具有通过空气（0）作为场（P0）传播的场的起点; 在大偏移（xL）处测量的电磁场（P）的一个或多个分量被计算回到重新计算的场（F0（x））到一个或多个偏移量（x）短于大偏移（xL ）; 从场（P（x））中减去重新计算的场（P0（X）），以便可能突出显示由于具有相对较高电阻率（2）的石油轴承储层形成（2）而引起的场。
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公开(公告)号：US20090267608A1
公开(公告)日：2009-10-29
申请号：US11794665
申请日：2006-01-09
IPC分类号： G01V3/12
CPC分类号： G01V3/083 , G01V3/12 , Y02A90/344
摘要： A method for determining electrical properties of a submarine petroleum fluid-bearing formation (1) under overburden geological layers (2) of thickness (s) under a seafloor (3) of a sea (4),said method comprising the following steps: arranging one or more transmitter antennas (9) in said sea (4), and arranging one or more electromagnetic receivers (8) in said sea (4), said sea having a shallow sea depth (d) of 50-350 meters; using said transmitter antenna (9) transmitting electromagnetic signals (10) of one or more pulses (11) having frequency of very low frequency between 0.01 Hz and 0.10 Hz; using said receiver antennas (8) having an offset from said transmitter (9), for receiving propagated electromagnetic signals (12) due to said emitted; electromagnetic signals (10); analysing one or more components of said received signals (12) from receivers (8) having offsets between about 1 km and 12 km, whether said signals (12) differ significantly from a corresponding signal that would occur from a water-bearing formation (1), indicating a petroleum fluid-bearing formation (1).
摘要翻译： 一种用于确定海底（3）海底（3）下厚度的上覆岩层地层（2）的海底石油流体承载地层（1）的电性能的方法，所述方法包括以下步骤： 在所述海（4）中的一个或多个发射器天线（9），并且在所述海（4）中布置一个或多个电磁接收器（8），所述海具有浅海深度（d）为50-350米; 使用所述发射机天线（9）传送在0.01Hz和0.10Hz之间具有非常低频率频率的一个或多个脉冲（11）的电磁信号（10） 使用具有来自所述发射机（9）的偏移的所述接收机天线（8），用于由于所述发射接收传播的电磁信号（12）; 电磁信号（10）; 从具有约1km到12km之间的偏移的接收器（8）分析所述接收信号（12）的一个或多个分量，所述信号（12）是否与从含水地层（1 ），表明含石油流体的地层（1）。
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4.发明授权公开(公告)号：US08299794B2
公开(公告)日：2012-10-30
申请号：US12227577
申请日：2007-05-16
IPC分类号： G01V3/00
摘要： A method for electromagnetic geophysical surveying of rock formations (1) under a sea-floor (3) comprising the following steps: *—towing first and second alternating field (E1, E2) emitting sources (s1, S2) in first and second depths below the sea surface, said first field (E1) having a first phase (Φ1);—said second alternating field (E2) given a second phase (Φ2) different from said first phase (Φ1), said sources (S1, S2) constituting a phased array emitter antenna with directivity for transmitting a major proportion of the combined electromagnetic energy downwards;—said first and second fields (E1, E2) for propagating partly down through the sea-floor (3) and being reflected and/or refracted through said rock formations (1) and partly propagating back through the seafloor (3);—said first and said second fields (E1, E2) for merging to a total field and being measured by electromagnetic receivers (r1, r2, . . . , rn) recording corresponding field registrations (Er1(t), Er2(t), Er3(t), . . . , Ern(t)).
摘要翻译： 一种用于在海底（3）下的岩层（1）的电磁地球物理测量方法，包括以下步骤：*在第一和第二深度中牵引第一和第二交变场（E1，E2）发射源（s1，S2） 所述第一场（E1）具有第一相位（Φ1）; - 所述第二交变场（E2）给出与所述第一相位（Φ1）不同的第二相位（Φ2），所述源极（S1，S2） 构成相对阵列发射天线，具有用于向下传输组合电磁能的主要部分的方向性; - 第一和第二场（E1，E2），用于部分向下传播通过海底（3）并被反射和/或折射 通过所述岩层（1）并部分地通过所述海底（3）传播; - 所述第一和所述第二场（E1，E2），用于合并到总场并由电磁接收器（r1，r2，...）测量。 ，rn）记录对应的场注册（Er1（t），Er2（t ），Er3（t），。 。 。 ，Ern（t））。
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公开(公告)号：US07812611B2
公开(公告)日：2010-10-12
申请号：US11794665
申请日：2006-01-09
CPC分类号： G01V3/083 , G01V3/12 , Y02A90/344
摘要： A method for determining electrical properties of a submarine petroleum fluid-bearing formation (1) under overburden geological layers (2) of thickness (s) under a seafloor (3) of a sea. The method includes:*arranging one or more transmitter antennas (9) in the sea, and arranging one or more electromagnetic receivers (8) in the sea, *the sea having a shallow sea depth (d) of 50-350 meters; *using the transmitter antenna (9) transmitting electromagnetic signals (10) of one or more pulses (11) having frequency of very low frequency between 0.01 Hz and 0.10 Hz; *using the receiver antennas (8) having an offset from the transmitter (9), for receiving propagated electro-magnetic signals (12) due to the emitted electromagnetic signals (10); *analyzing one or more components of the received signals (12) from receivers (8) having offsets between about 1 km and 12 km, whether the signals (12) differ significantly from a corresponding signal that would occur from a water-bearing formation (1), indicating a petroleum fluid-bearing formation (1).
摘要翻译： 一种用于确定海底海底（3）厚度的上覆岩层地层（2）的海底石油流体承载地层（1）的电性能的方法。 该方法包括：*在海中布置一个或多个发射天线（9），并在海中配置一个或多个电磁接收器（8），海底深度为深度（d）为50-350米; *使用发射天线（9）发射具有0.01Hz至0.10Hz之间的非常低频率频率的一个或多个脉冲（11）的电磁信号（10） *使用具有来自发射器（9）的偏移的接收机天线（8），用于由于所发射的电磁信号（10）而接收传播的电磁信号（12）。 从具有约1km到12km之间的偏移的接收机（8）分析接收信号（12）的一个或多个分量，信号（12）是否与从含水地层发生的对应信号显着不同（ 1），表示含石油流体的地层（1）。
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6.发明申请公开(公告)号：US20090243617A1
公开(公告)日：2009-10-01
申请号：US12227577
申请日：2007-05-16
IPC分类号： G01V3/12
摘要： A method for electromagnetic geophysical surveying of rock formations (1) under a sea-floor (3) comprising the following steps: * —towing first and second alternating field (E1, E2) emitting sources (s1, S2) in first and second depths below the sea surface, said first field (E1) having a first phase (Φ1); —said second alternating field (E2) given a second phase (Φ2) different from said first phase (Φ1), said sources (S1, S2) constituting a phased array emitter antenna with directivity for transmitting a major proportion of the combined electromagnetic energy downwards; —said first and second fields (E1, E2) for propagating partly down through the sea-floor (3) and being reflected and/or refracted through said rock formations (1) and partly propagating back through the seafloor (3); —said first and said second fields (E1, E2) for merging to a total field and being measured by electromagnetic receivers (r1, r2, . . . , rn) recording corresponding field registrations (Er1(t), Er2(t), Er3(t), . . . , Ern(t)).
摘要翻译： 一种用于在海底（3）下的岩层（1）的电磁地球物理测量方法，包括以下步骤：*在第一和第二深度中牵引第一和第二交变场（E1，E2）发射源（s1，S2） 在海面以下，所述第一场（E1）具有第一相（Phi1）; 给定与第一相（Phi1）不同的第二相（Phi2）的第二交变场（E2），所述源（S1，S2）构成相控阵发射天线，具有用于向下传送组合电磁能的主要部分的方向性 ; （E1，E2），用于部分向下传播通过海底（3）并被反射和/或折射通过所述岩层（1）并部分地传播通过海底（3）; （E1，E2），用于合并到总场并由电磁接收机（r1，r2，...，rn）测量，记录对应的场注册（Er1（t），Er2（t）， Er3（t），...，Ern（t））。
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