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1. 发明申请

WO2009037419A2 ELECTROMAGNETIC SURVEYING 审中-公开
标题翻译：电磁测量
公开(公告)号：WO2009037419A2
公开(公告)日：2009-03-26
申请号：PCT/GB2008/002921
申请日：2008-08-29
申请人： OHM LIMITED , ANDREIS, David , MACGREGOR, Lucy , GOLUBEV, Nikolay
发明人： ANDREIS, David , MACGREGOR, Lucy , GOLUBEV, Nikolay
IPC分类号： G01V3/12
CPC分类号： G01V3/12 , E21B2043/0115 , G01V3/083
摘要： A method of analysing results from an electromagnetic survey of an area that is thought or known to contain a subterranean resistive or conductive body within a background strata configuration is described. The method comprises providing a set of electromagnetic field data obtained using at least one electromagnetic receiver and at least one electromagnetic source for a range of source-receiver separations, e.g. providing conventional controlled-source electromagnetic survey data. A subset of the electromagnetic field data is identified that comprises data obtained for source-receiver separations greater than a selected threshold offset. The threshold offset is chosen so that data beyond this offset are characteristic of magnetotelluric data. Thus the subset of data is then processed in accordance with a first technique to obtain information on the background strata configuration. Other electromagnetic field data obtained for source-receiver separations less than the threshold offset may then be processed in accordance with a second technique to obtain information on any subterranean resistive or conductive body within the background strata configuration.
摘要翻译：描述了一种分析来自在背景层构造中被认为或已知含有地下电阻或导电体的区域的电磁勘测的结果的方法。该方法包括提供使用至少一个电磁接收器获得的一组电磁场数据和用于一系列源 - 接收器分离的至少一个电磁源。提供常规的受控源电磁勘测数据。识别电磁场数据的子集，其包括为大于所选阈值偏移的源 - 接收器分离获得的数据。选择阈值偏移，使得超出该偏移的数据是大地电磁数据的特征。因此，根据第一技术来处理数据子集以获得关于背景层配置的信息。然后可以根据第二技术来处理获得的小于阈值偏移的源 - 接收器分离的其它电磁场数据，以获得关于背景层构造内的任何地下电阻或导电体的信息。

2. 发明申请

WO2007135359A2 ELECTROMAGNETIC SURVEYING 审中-公开
标题翻译：电磁测量
公开(公告)号：WO2007135359A2
公开(公告)日：2007-11-29
申请号：PCT/GB2007/001497
申请日：2007-04-24
申请人： OHM LIMITED , MACGREGOR, Lucy , ANDREIS, David , BARKER, Neville
发明人： MACGREGOR, Lucy , ANDREIS, David , BARKER, Neville
CPC分类号： G01V3/083
摘要： A method of analysing results from a controlled source electromagnetic survey of a region of interest containing a previously identified geological structure suitable for bearing hydrocarbons is described. The method comprises providing a first survey data set obtained outside the region of interest, i.e. off-target, for a range of source-receiver orientations and offsets, and providing a second survey data set obtained inside the region of interest, i.e. on target, for a range of source-receiver offsets. The method further comprises performing a mathematical inversion of the first survey data set to provide a model of the subterranean strata outside the region of interest, and processing the second survey data set to provide a model of the subterranean strata inside the region of interest, wherein the processing of the second survey data set takes account of the results of the inversion of the first survey data set.
摘要翻译：描述了从包含先前确定的适于承载烃的地质结构的感兴趣区域的受控源电磁勘测中分析结果的方法。该方法包括：在源 - 接收器取向和偏移的范围内提供在感兴趣区域之外获得的第一勘测数据集，即偏靶，以及提供在感兴趣区域内即即目标上获得的第二勘测数据集，用于一系列源 - 接收器偏移。该方法还包括执行第一勘测数据集的数学倒置以提供感兴趣区域外的地下层的模型，以及处理第二勘测数据集以提供感兴趣区域内的地下层的模型，其中第二勘测数据集的处理考虑了第一勘测数据集的反转结果。

3. 发明申请

WO2008081162A1 METHOD FOR INTERPRETING SEISMIC DATA AND CONTROLLED SOURCE ELECTROMAGNETIC DATA TO ESTIMATE SUBSURFACE RESERVOIR PROPERTIES 审中-公开
标题翻译：用于解释地震数据和控制源电磁数据以估计地表储层性质的方法
公开(公告)号：WO2008081162A1
公开(公告)日：2008-07-10
申请号：PCT/GB2007/004869
申请日：2007-12-18
申请人： ROCK SOLID IMAGES, INC. , OHM LIMITED , MACGREGOR, Lucy , HARRIS, Peter
发明人： MACGREGOR, Lucy , HARRIS, Peter
IPC分类号： G01V11/00
CPC分类号： G01V11/00 , G01V3/083 , G01V2210/6163
摘要： A method for mapping a property of a subsurface reservoir includes determining a value of at least one reservoir property (20) from measurements obtained from a well drilled through the reservoir (18). A relationship is determined between the at least one property of the reservoir (20) and at least one seismic attribute (14) and at least one electromagnetic survey attribute (16) at a geodetic position of the well. A value of the at least one reservoir property is determined at least one other geodetic position (24) from a value of the at least one seismic attribute, a value of the at least one electromagnetic survey attribute at the at least one other geodetic position, and from the determined relationship.
摘要翻译：用于映射地下储层的性质的方法包括从通过储层（18）钻出的井获得的测量值确定至少一个储层性质（20）的值。在油井（20）的至少一个性质与至少一个地震属性（14）和井的大地测量位置的至少一个电磁勘测属性（16）之间确定关系。根据所述至少一个地震属性的值，所述至少一个其它大地测量位置处的所述至少一个电磁勘测属性的值，确定所述至少一个储层特性的值至少一个另外的大地测量位置（24）并从确定的关系。

4. 发明申请

WO2008152361A1 ELECTROMAGNETIC DETECTOR FOR MARINE SURVEYING 审中-公开
标题翻译：用于海洋勘测的电磁探测器
公开(公告)号：WO2008152361A1
公开(公告)日：2008-12-18
申请号：PCT/GB2008/001925
申请日：2008-06-05
申请人： OHM LIMITED , MACGREGOR, Lucy , PRATT, David, Charles, Newall , NICHOLLS, Jonathan, Harvey , SINHA, Martin, C.
发明人： MACGREGOR, Lucy , PRATT, David, Charles, Newall , NICHOLLS, Jonathan, Harvey , SINHA, Martin, C.
IPC分类号： G01V3/12
CPC分类号： G01V3/12 , G01V3/083
摘要： A detector for underwater electromagnetic surveying is described. The detector (123) comprises first, second, third and fourth electrodes which are arranged to define first, second and third electric dipole antennae (201) extending between pairs of the electrodes. Each dipole antennae extends between a pair of the electrodes and the fourth electrode is common to all three dipole antennae. Thus the first electrode is separated from the fourth electrode (140) along a first direction to provide the first dipole antenna, the second electrode is separated from the fourth electrode along a second direction to provide the second dipole antenna, and the third electrode is separated from the fourth electrode along a third direction to provide the third dipole antenna. The electrodes are arranged so that the first, second and third directions are inclined at an angle of between 20 and 70 degrees to a surface on which the detector rests when in normal use.
摘要翻译：描述了一种用于水下电磁测量的探测器。检测器（123）包括第一，第二，第三和第四电极，其布置成限定在成对的电极之间延伸的第一，第二和第三电偶极天线（201）。每个偶极天线在一对电极之间延伸，第四电极对于所有三个偶极子天线是共同的。因此，第一电极沿着第一方向与第四电极（140）分离以提供第一偶极子天线，第二电极沿着第二方向与第四电极分离以提供第二偶极子天线，并且第三电极被分离从第四电极沿着第三方向提供第三偶极子天线。电极被布置成使得当正常使用时，第一，第二和第三方向以与检测器搁置的表面成20至70度的角度倾斜。

5. 发明公开

EP2021834A2 ELECTROMAGNETIC SURVEYING 审中-公开
标题翻译： ELEKTROMAGNETISCHE VERMESSUNGEN
公开(公告)号：EP2021834A2
公开(公告)日：2009-02-11
申请号：EP07732536.3
申请日：2007-04-24
申请人： OHM Limited
发明人： MACGREGOR, Lucy , ANDREIS, David , BARKER, Neville
IPC分类号： G01V3/12
CPC分类号： G01V3/083
摘要： A method of analysing results from a controlled source electromagnetic survey of a region of interest containing a previously identified geological structure suitable for bearing hydrocarbons is described. The method comprises providing a first survey data set obtained outside the region of interest, i.e. off-target, for a range of source-receiver orientations and offsets, and providing a second survey data set obtained inside the region of interest, i.e. on target, for a range of source-receiver offsets. The method further comprises performing a mathematical inversion of the first survey data set to provide a model of the subterranean strata outside the region of interest, and processing the second survey data set to provide a model of the subterranean strata inside the region of interest, wherein the processing of the second survey data set takes account of the results of the inversion of the first survey data set.
摘要翻译：描述了一种分析来自感兴趣区域的受控源电磁勘测的结果的方法，其包含先前确定的适于承载烃的地质结构。该方法包括提供在感兴趣区域之外获得的第一勘测数据集，所述第一勘测数据集在源 - 接收者取向和偏移的范围内，即在目标区域内获得的第二勘测数据集，用于一系列源 - 接收器偏移。该方法还包括执行第一勘测数据集的数学倒置以提供感兴趣区域外的地层的模型，以及处理第二勘测数据集以提供感兴趣区域内的地下层的模型，其中第二勘测数据集的处理考虑了第一勘测数据集的反转结果。

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