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公开(公告)号：US08126651B2
公开(公告)日：2012-02-28
申请号：US11922815
申请日：2006-06-06
CPC分类号： G01V1/306
摘要： Method for obtaining rock parameters such as porosity and vshale directly from inversion of seismic data corresponding to a single trace location. This method is distinguished from existing methods that obtain elastic properties from inversion of seismic data, then relate the elastic parameters to rock lithology parameters such as porosity or vshale because it is accomplished in one step, can incorporate anisotropy and does not require multiple trace locations for stability. The data are separated into partial stacks, and a wavelet is specified for each stack. A set of linearized equations are constructed relating seismic reflectivity to changes in elastic parameters, and another set of linearized equations is constructed relating the changes in elastic parameters to the lithologic parameters. The linearized reflectivity equations are combined with the linearized rock physics equations, convolved with the specified wavelets, and equated to the seismic data. The resulting matrix equations are then inverted and a solution is obtained for all offsets simultaneously.
摘要翻译： 直接从对应于单一轨迹位置的地震数据反演获得岩石参数如孔隙度和垂直叶片的方法。 该方法与从地震数据反演获得弹性性质的现有方法不同，然后将弹性参数与岩石岩性参数（如孔隙度或vshale）相关联，因为它在一个步骤中完成，可以包含各向异性，并且不需要多个迹线位置 稳定性。 数据被分成部分堆栈，并为每个堆栈指定一个小波。 构造了一组线性方程，将地震反射率与弹性参数的变化相关联，另外建立了一组线性化方程，将弹性参数的变化与岩性参数相关联。 线性化反射率方程与线性化岩石物理方程组合，与指定的小波卷积，并等同于地震数据。 然后将所得到的矩阵方程反相，同时获得所有偏移的解。
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公开(公告)号：US20090271118A1
公开(公告)日：2009-10-29
申请号：US11922815
申请日：2006-06-06
IPC分类号： G01V1/28
CPC分类号： G01V1/306
摘要： Method for obtaining rock parameters such as porosity and vshale directly from inversion of seismic data corresponding to a single trace location. This method is distinguished from existing methods that obtain elastic properties from inversion of seismic data, then relate the elastic parameters to rock lithology parameters such as porosity or vshale because it is accomplished in one step, can incorporate anisotropy and does not require multiple trace locations for stability. The data are separated into partial stacks, and a wavelet is specified for each stack. A set of linearized equations are constructed relating seismic reflectivity to changes in elastic parameters, and another set of linearized equations is constructed relating the changes in elastic parameters to the lithologic parameters. The linearized reflectivity equations are combined with the linearized rock physics equations, convolved with the specified wavelets, and equated to the seismic data. The resulting matrix equations are then inverted and a solution is obtained for all offsets simultaneously.
摘要翻译： 直接从对应于单一轨迹位置的地震数据反演获得岩石参数如孔隙度和垂直叶片的方法。 该方法与从地震数据反演获得弹性性质的现有方法不同，然后将弹性参数与岩石岩性参数（如孔隙度或vshale）相关联，因为它在一个步骤中完成，可以包含各向异性，并且不需要多个迹线位置 稳定性。 数据被分成部分堆栈，并为每个堆栈指定一个小波。 构造了一组线性方程，将地震反射率与弹性参数的变化相关联，另外建立了一组线性化方程，将弹性参数的变化与岩性参数相关联。 线性化反射率方程与线性化岩石物理方程组合，与指定的小波卷积，并等同于地震数据。 然后将所得到的矩阵方程反相，同时获得所有偏移的解。
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3.发明授权公开(公告)号：US07424367B2
公开(公告)日：2008-09-09
申请号：US11587418
申请日：2005-01-24
IPC分类号： G01V1/00
CPC分类号： G01V1/306
摘要： Method for predicting lithology and porosity of subsurface rocks from seismic reflection data. The seismic data is inverted to yield elastic properties of the rocks such as the compressional and shear impedances. A rock physics model is built to relate porosity, the shale volume fraction, the fluid content of the rock and the elastic properties of the rock. The model is run backward in a second inversion process to solve for porosity and lithologic properties such as the shale volume fraction.
摘要翻译： 从地震反射数据预测地下岩石的岩性和孔隙度的方法。 地震数据反演，以产生岩石的弹性特性，如压缩和剪切阻抗。 建立了岩石物理模型，用于将孔隙度，页岩体积分数，岩石的流体含量和岩石的弹性性质相关联。 该模型在第二次反演过程中向后运行，以解决孔隙度和岩性等页岩体积分数。
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4.发明授权公开(公告)号：US08126648B2
公开(公告)日：2012-02-28
申请号：US11922817
申请日：2006-06-26
IPC分类号： G01V9/00
CPC分类号： G01V1/306
摘要： Method for determining best and worst cases for values of model parameters such as porosity and shale volume fraction generated by non-unique matrix inversion of physical data such as seismic reflection amplitudes. The matrix is diagonalized, and then orthonormal basis vectors associated with insignificant diagonal elements are used to generate upper and lower bounds on the solution. Best and worst case solutions are determined as linear combinations of the null basis vectors, where the expansion coefficients are determined by making a best fit to the upper and lower bounds.
摘要翻译： 用于确定模型参数值的最佳和最差情况的方法，例如通过物理数据（如地震反射幅度）的非唯一矩阵反演产生的孔隙度和页岩体积分数。 矩阵被对角化，然后使用与无效对角线元素相关联的正交基矢量来在解上产生上限和下限。 最佳和最差情况解决方案被确定为空基向量的线性组合，其中通过对上限和下限进行最佳拟合来确定膨胀系数。
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5.发明授权公开(公告)号：US06446007B1
公开(公告)日：2002-09-03
申请号：US09419588
申请日：1999-10-18
IPC分类号： G06F1900
CPC分类号： G01V1/364 , G01V1/28 , G01V2210/51
摘要： A method for controlled-amplitude prestack time migration of seismic data traces. According to the inventive method, common-offset gathers of the prestack seismic data traces are 3-D Fourier transformed from the space-time domain to a preselected alternate data domain, such as the frequency-wavenumber domain, the wavenumber-time domain, or the slant-stack domain. A migration operator that substantially preserves the seismic amplitudes of the original data traces is computed in the {right arrow over (p)}−z domain. This migration operator is applied to the transformed data traces in the alternate data domain, an imaging condition is applied, and the resulting migrated data traces are then transformed back to the space domain.
摘要翻译： 一种用于地震数据轨迹的受控幅度叠前时间偏移的方法。 根据本发明的方法，叠前地震数据轨迹的共偏移集合从时空域被傅里叶变换为预选的备用数据域，例如频率波数域，波数时域或 倾斜堆栈域。 在{右箭头（p）} -z域计算基本上保留原始数据迹线的地震幅度的迁移算子。 该迁移操作符应用于备用数据域中的变换数据跟踪，应用成像条件，然后将生成的迁移数据跟踪转换回空间域。
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