-
公开(公告)号：US06370477B1
公开(公告)日：2002-04-09
申请号：US09605511
申请日：2000-06-28
IPC分类号： G01V132
CPC分类号： G01V1/22
摘要： Methods and apparatus for seismic data compression are described, making use of a local discrete sine/cosine transform of the type IV applied to a data set which is limited by a stationary window function which reduces the overlap to the adjoining windows.
摘要翻译： 描述了用于地震数据压缩的方法和装置，利用施加到由静止窗函数限制的数据集的类型IV的局部离散正弦/余弦变换，其减少与相邻窗口的重叠。
-
公开(公告)号：US6104982A
公开(公告)日：2000-08-15
申请号：US77634
申请日：1998-08-13
CPC分类号： G01V1/22
摘要： The method includes the steps of applying a local spatial trigonometric transformation to seismic data to generate transformed data and compressing the transformed data. Compression may be achieved by retaining a selected part of the transformed data at reduced accuracy. The selected part may be a high frequency part of the transformed data. A window function is chosen so that the transformations are applied over a central window and overlap with the adjoining windows. Suitable transformations for use with the method include a local cosine transformation, a discrete cosine transformation of type IV, a local sine transformation and a Fourier transformation. For example, a HF part of the transformed data is retained at reduced accuracy. The transformed data is compressed by a coarser re-quantization of the transformed data. A temporal transformation is applied to the seismic data, that is local and of the trigonometric type. A window function is selected so that the transformations are applied over a central window and an overlap with adjoining windows. The transformations preserve the number of samples. A reduced redundancy in the transformed data is used to further reduce the compressed data.
摘要翻译： PCT No.PCT / GB96 / 02885第 371日期1998年8月13日 102（e）日期1998年8月13日PCT 1996年11月22日PCT公布。 出版物WO97 / 21115 日期1997年6月12日该方法包括对地震数据应用局部空间三角变换以产生变换数据并压缩变换数据的步骤。 可以通过以降低的精度保留所选部分的变换数据来实现压缩。 所选择的部分可以是变换数据的高频部分。 选择窗口函数，使得变换应用在中心窗口上并与相邻的窗口重叠。 用于该方法的合适变换包括局部余弦变换，IV型离散余弦变换，局部正弦变换和傅里叶变换。 例如，转换数据的HF部分以精确度降低的方式被保留。 变换数据被变换数据的较粗略的重新量化压缩。 对地震数据应用时间变换，即地理数据和三角类型。 选择窗口函数，使得变换应用于中心窗口并与邻接窗口重叠。 转换保留样本数。 变换数据中减少的冗余被用于进一步减少压缩数据。
-
公开(公告)号：US08205711B2
公开(公告)日：2012-06-26
申请号：US10239443
申请日：2001-03-09
CPC分类号： G01V1/006 , G01V1/3861
摘要： A seismic source array 15 comprises a plurality of seismic source 26 arranged about a central point of the source array 15 in such a way that an imaginary circle drawn with said central point at its center, and containing all of said seismic sources 26, can be divided into at least three whole sectors each of which contains a substantially identical arrangement of seismic sources 26.
摘要翻译： 地震源阵列15包括围绕源极阵列15的中心点布置的多个地震源26，使得在其中心处以所述中心点绘制并包含所有所述地震源26的虚拟圆可以是 分为至少三个整个扇区，每个扇区都包含基本相同的地震源26的布置。
-
公开(公告)号：US09575193B2
公开(公告)日：2017-02-21
申请号：US13302770
申请日：2011-11-22
CPC分类号： G01V1/003
摘要： Methods and systems are disclosed to enhance surveying techniques. In one embodiment, a virtual response is estimated that corresponds to energy propagated within a subsurface region between a virtual source and a virtual source estimation receiver, wherein the subsurface region corresponds to a survey zone including: a plurality of receivers deployed within the survey zone, a first subzone having at least one actual source, a second subzone within the first subzone; the virtual source is a first receiver disposed in the second subzone; and the virtual source estimation receiver is a second receiver.
摘要翻译： 披露方法和系统以增强测量技术。 在一个实施例中，估计对应于在虚拟源和虚拟源估计接收器之间的地下区域内传播的能量的虚拟响应，其中所述地下区域对应于测量区域，包括：部署在所述测量区域内的多个接收器， 具有至少一个实际源的第一子区域，所述第一子区域内的第二子区域; 虚拟源是设置在第二子区域中的第一接收器; 虚拟源估计接收机是第二接收机。
-
公开(公告)号：US20130250723A1
公开(公告)日：2013-09-26
申请号：US13427363
申请日：2012-03-22
IPC分类号： G01V1/36
CPC分类号： G01V1/005 , G01V1/366 , G01V2210/32
摘要： An embodiment of the invention includes combining pseudorandom sweeps with an independent, or nearly independent, survey acquisition technique. Targeted design of pseudorandom sweeps can direct the majority of cross-correlation noise to lie outside key time-lags of the record (i.e., windows of interest). Embodiments of the invention are described herein.
摘要翻译： 本发明的实施例包括将伪随机扫描与独立或几乎独立的测量采集技术相结合。 伪随机扫描的目标设计可以将大多数互相关噪声引导到记录的关键时间滞后（即，感兴趣的窗口）之外。 本文描述了本发明的实施例。
-
公开(公告)号：US09341724B2
公开(公告)日：2016-05-17
申请号：US13427363
申请日：2012-03-22
CPC分类号： G01V1/005 , G01V1/366 , G01V2210/32
摘要： An embodiment of the invention includes combining pseudorandom sweeps with an independent, or nearly independent, survey acquisition technique. Targeted design of pseudorandom sweeps can direct the majority of cross-correlation noise to lie outside key time-lags of the record (i.e., windows of interest). Embodiments of the invention are described herein.
摘要翻译： 本发明的实施例包括将伪随机扫描与独立或几乎独立的测量采集技术相结合。 伪随机扫描的目标设计可以将大多数互相关噪声引导到记录的关键时间滞后（即，感兴趣的窗口）之外。 本文描述了本发明的实施例。
-
公开(公告)号：US20130131988A1
公开(公告)日：2013-05-23
申请号：US13302770
申请日：2011-11-22
IPC分类号： G06F19/00
CPC分类号： G01V1/003
摘要： Methods and systems are disclosed to enhance surveying techniques. In one embodiment, a virtual response is estimated that corresponds to energy propagated within a subsurface region between a virtual source and a virtual source estimation receiver, wherein the subsurface region corresponds to a survey zone including: a plurality of receivers deployed within the survey zone, a first subzone having at least one actual source, a second subzone within the first subzone; the virtual source is a first receiver disposed in the second subzone; and the virtual source estimation receiver is a second receiver.
摘要翻译： 披露方法和系统以增强测量技术。 在一个实施例中，估计对应于在虚拟源和虚拟源估计接收器之间的地下区域内传播的能量的虚拟响应，其中所述地下区域对应于测量区域，包括：部署在所述测量区域内的多个接收器， 具有至少一个实际源的第一子区域，所述第一子区域内的第二子区域; 虚拟源是设置在第二子区域中的第一接收器; 虚拟源估计接收机是第二接收机。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.023 秒)
