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公开(公告)号：US09383475B2
公开(公告)日：2016-07-05
申请号：US12135729
申请日：2008-06-09
申请人： Lucy MacGregor , Peter Harris
发明人： Lucy MacGregor , Peter Harris
摘要： A method of analyzing controlled source electromagnetic (CSEM) survey data to determine probability density functions (PDFs) for values of an electromagnetic parameter at locations in a subterranean region of interest is provided. Structural features in the subterranean strata are identified, e.g. from seismic survey data. An initial PDF for values of the electromagnetic parameter is then assigned to each feature. Models specifying values for the parameter in each structural feature are generated by sampling the PDFs. A subset of the models are deemed acceptable based on an acceptance criterion. The PDF for each feature is modified based on values for the parameter in the subset of accepted models to generate replacement PDFs for each feature. The process may be iterated a number of times to generate final PDFs for values of the electromagnetic parameter in the structural features identified in the subterranean region of interest.
摘要翻译： 提供了一种分析受控源电磁（CSEM）测量数据以确定在感兴趣的地下地区的电磁参数的值的概率密度函数（PDF）的方法。 确定地层中的结构特征，例如。 从地震勘测数据。 然后将电磁参数的值的初始PDF分配给每个特征。 指定每个结构特征参数值的模型是通过对PDF进行抽样来生成的。 基于验收标准，模型的一部分被认为是可以接受的。 每个功能的PDF都会根据接受模型子集中的参数值进行修改，以生成每个功能的替换PDF。 该过程可以迭代多次，以产生在感兴趣的地下区域中识别的结构特征中的电磁参数的值的最终PDF。
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公开(公告)号：US20140102694A1
公开(公告)日：2014-04-17
申请号：US13650920
申请日：2012-10-12
发明人： Neil HARGREAVES , Sven TREITEL
摘要： A computer-implemented method for processing a seismic trace of a subterranean region comprising: (a) deriving a seismic wavelet for a time-window of seismic trace; (b) generating a model for the subterranean region corresponding to that time-window comprising a plurality of seismic reflectors by comparing the seismic wavelet with the time-window of the seismic trace to identify locations for the seismic reflectors, wherein the locations of the seismic reflectors are subject to a separation constraint requiring neighboring seismic reflectors to be separated by at least a minimum separation threshold which is greater than a separation corresponding to a sampling interval for the seismic trace; (c) defining a model seismic wavelet having a model seismic wavelet amplitude spectrum with a frequency bandwidth which is greater than that of the seismic wavelet amplitude spectrum determined for the time-window of the seismic trace; and (d) generating a model of the time-window of the seismic trace for the subterranean region based on the plurality of seismic reflectors of the model for the subterranean region corresponding to that time window and the model seismic wavelet.
摘要翻译： 一种用于处理地下地震的地震迹线的计算机实现的方法，包括：（a）导出地震波的时间窗的地震小波; （b）通过将地震小波与地震轨迹的时间窗口进行比较来识别包括多个地震反射器的时间窗对应的地下区域的模型，以识别地震反射器的位置，其中地震的位置 反射器经受分离约束，要求相邻的地震反射器至少被分开至少一个最小分离阈值，该最小分离阈值大于对应于地震迹线的采样间隔的间隔; （c）定义具有频率带宽大于地震轨迹时间窗确定的地震小波振幅谱的模型地震小波振幅谱的模型地震小波; 以及（d）基于与该时间窗口对应的地下区域的模型的多个地震反射器和模型地震小波，生成用于地下区域的地震轨迹的时间窗口的模型。
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公开(公告)号：US09268047B2
公开(公告)日：2016-02-23
申请号：US13650920
申请日：2012-10-12
发明人： Neil Hargreaves , Sven Treitel
摘要： A computer-implemented method for processing a seismic trace of a subterranean region comprising: (a) deriving a seismic wavelet for a time-window of seismic trace; (b) generating a model for the subterranean region corresponding to that time-window comprising a plurality of seismic reflectors by comparing the seismic wavelet with the time-window of the seismic trace to identify locations for the seismic reflectors, wherein the locations of the seismic reflectors are subject to a separation constraint requiring neighboring seismic reflectors to be separated by at least a minimum separation threshold which is greater than a separation corresponding to a sampling interval for the seismic trace; (c) defining a model seismic wavelet having a model seismic wavelet amplitude spectrum with a frequency bandwidth which is greater than that of the seismic wavelet amplitude spectrum determined for the time-window of the seismic trace; and (d) generating a model of the time-window of the seismic trace for the subterranean region based on the plurality of seismic reflectors of the model for the subterranean region corresponding to that time window and the model seismic wavelet.
摘要翻译： 一种用于处理地下地震的地震迹线的计算机实现的方法，包括：（a）导出地震波的时间窗的地震小波; （b）通过将地震小波与地震轨迹的时间窗口进行比较来识别包括多个地震反射器的时间窗对应的地下区域的模型，以识别地震反射器的位置，其中地震的位置 反射器经受分离约束，要求相邻的地震反射器至少被分开至少一个最小分离阈值，该最小分离阈值大于对应于地震迹线的采样间隔的间隔; （c）定义具有频率带宽大于地震轨迹时间窗确定的地震小波振幅谱的模型地震小波振幅谱的模型地震小波; 以及（d）基于与该时间窗口对应的地下区域的模型的多个地震反射器和模型地震小波，生成用于地下区域的地震轨迹的时间窗口的模型。
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4.发明授权Method for interpreting seismic data and controlled source electromagnetic data to estimate subsurface reservoir properties 有权用于解释地震数据和受控源电磁数据以估计地下储层性质的方法公开(公告)号：US08064287B2
公开(公告)日：2011-11-22
申请号：US11646935
申请日：2006-12-28
申请人： Peter Harris , Lucy MacGregor
发明人： Peter Harris , Lucy MacGregor
IPC分类号： G01V1/00
CPC分类号： G01V11/00 , G01V2210/6163
摘要： A method for mapping a property of a subsurface reservoir includes determining a value of at least one reservoir property from measurements obtained from a well drilled through the reservoir. A relationship is determined between the at least one property of the reservoir and at least one seismic attribute and at least one electromagnetic survey attribute at a geodetic position of the well. A value of the at least one reservoir property is determined at at least one other geodetic position 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钻出的井获得的测量值确定至少一个储层性质的值。 在井的大地位置之间确定储层的至少一个性质与至少一个地震属性与至少一个电磁勘探属性之间的关系。 从至少一个地震属性的值，至少一个其他大地测量位置上的至少一个电磁勘测属性的值，以及从至少一个其它大地测量位置 确定的关系。
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公开(公告)号：US11163080B2
公开(公告)日：2021-11-02
申请号：US15983452
申请日：2018-05-18
发明人： Carlos Cobos , Marco Zanzi , Lucy MacGregor , Francisco Bolivar , Pedro Alvarez , David Andreis , Dario Grana
摘要： A computer implemented method is provided for generating a subsurface rock and/or fluid model on a determined domain. The subsurface rock and/or fluid model generated by the invention combines acoustic data and data obtained by an electromagnetic survey in such a way that the resulting model avoids the need of generating an image of the resistivity with the low resolution imposed by the known techniques inverting EM electromagnetic survey data.
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