专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO1998019182A1 METHOD OF REDUCTION OF NOISE FROM SEISMIC DATA TRACES 审中-公开
标题翻译：减少地震数据跟踪噪声的方法
公开(公告)号：WO1998019182A1
公开(公告)日：1998-05-07
申请号：PCT/US1997019477
申请日：1997-10-22
申请人： PGS TENSOR (US), INC.
发明人： PGS TENSOR (US), INC. , BARNES, Simon, Rice , HAWKINS, Keith, Silvae , FOOKES, Gregory, Peter, Gwyn
IPC分类号： G01V01/36
CPC分类号： G01V1/364 , G01V2210/3246
摘要： A method of suppression of burst coherent noise in seismic data is provided comprising: a) comparing a threshold amplitude characteristic acceptance value for a time window of a reference trace to an amplitude characteristic of a test trace of a set of traces within the window and, b) applying a non-zero scalar to the test trace in the time window if an amplitude of the test trace within the time window is not within the threshold amplitude characteristic acceptance value.
摘要翻译：提供了一种在地震数据中抑制突发相干噪声的方法，包括：a）将参考轨迹的时间窗口的阈值振幅特性接受值与窗口内的一组迹线的测试轨迹的振幅特性进行比较， b）如果时间窗内的测试迹线的振幅不在阈值幅值特征接受值内，则在时间窗口中将非零标量应用于测试迹线。

2. 发明申请

WO1998022835A1 DETECTION OF GROUND ROLL CONE 审中-公开
标题翻译：地基螺旋锥体的检测
公开(公告)号：WO1998022835A1
公开(公告)日：1998-05-28
申请号：PCT/GB1997003039
申请日：1997-11-05
申请人： GECO-PRAKLA (UK) LIMITED , BAETEN, Guido, Josef, Maria , LEMENAGER, Erwann
发明人： GECO-PRAKLA (UK) LIMITED
IPC分类号： G01V01/36
CPC分类号： G01V1/36 , G01V1/288 , G01V2210/21 , G01V2210/52
摘要： The present invention relates to a method to detect areas of acquired seismic data that contain ground roll. The method according to the invention allows the detection of ground roll cone on the basis of an estimate of the local ground roll velocity or even without any knowledge of the ground roll velocity. The method according to the invention is furthermore very useful for an automatic process of ground roll detection.
摘要翻译：本发明涉及一种用于检测包含地面卷的获取的地震数据的区域的方法。根据本发明的方法允许基于当地地面侧倾速度的估计或者甚至不知道地面侧倾速度来检测地面圆锥体。此外，根据本发明的方法对于地面辊检测的自动处理非常有用。

3. 发明申请

WO1998010312A1 METHOD FOR RECONSTRUCTING SEISMIC WAVEFIELDS 审中-公开
标题翻译：重建地震波形的方法
公开(公告)号：WO1998010312A1
公开(公告)日：1998-03-12
申请号：PCT/US1997012889
申请日：1997-07-23
申请人： EXXON PRODUCTION RESEARCH COMPANY
发明人： EXXON PRODUCTION RESEARCH COMPANY , DUREN, Richard, E. , ERIKSEN, Eric, A. , TRANTHAM, Eugene, Clark
IPC分类号： G01V01/36
CPC分类号： G01V1/362 , G01V2210/52 , G01V2210/56
摘要： A method for reconstructing (138) a selected wavefield at a designated common midpoint and offset location (132) from a set of prestack seismic data traces (126). The method uses actual data traces from other common midpoint and offset locations to reconstruct the selected wavefield at the designated reconstruction location. The method may be used to reconstruct any selected wavefield, including both primary reflection wavefields and secondary wavefields such as water-bottom multiple wavefields, and may be used with both 2-D and 3-D seismic data. If the reconstructed wavefield is a secondary wavefield, it may be subtracted from the restack seismic data traces to eliminate interference between wavefields. The method may also be used to reconstruct data from missing shots to avoid spatial aliasing problems in other data processing operations.
摘要翻译：一种用于在指定的共同中点和偏移位置（132）处从一组叠前地震数据迹线（126）重建（138）所选波场的方法。该方法使用来自其他公共中点和偏移位置的实际数据轨迹来重构在指定重建位置处的所选波场。该方法可用于重构任何选定的波场，包括主反射波场和二次波场如水底多波场，并可与二维和三维地震数据一起使用。如果重建的波场是二次波场，则可以从恢复地震数据轨迹中减去，以消除波场之间的干扰。该方法还可以用于从丢失的镜头重建数据，以避免其他数据处理操作中的空间混叠问题。

4. 发明申请

WO1998003886A1 PHYSICAL ATTRIBUTE MIGRATION METHOD FOR A MEDIUM 审中-公开
标题翻译：中介的物理属性迁移方法
公开(公告)号：WO1998003886A1
公开(公告)日：1998-01-29
申请号：PCT/FR1997001247
申请日：1997-07-09
申请人： ELF EXPLORATION PRODUCTION , DUNAND, Jean-Pierre , De BAZELAIRE, Eric
发明人： ELF EXPLORATION PRODUCTION
IPC分类号： G01V01/36
CPC分类号： G01V1/362 , G01V2210/52
摘要： A physical attribute migration method for a medium is disclosed. The method comprises forming at least one collection of seismic traces associated with an area of the medium and classified according to a predetermined criterion, and a stack section is produced on the basis of said seismic trace collection using a stacking speed field related to said area. According to the method, (a) the product of a term related to the trace amplitude and a term related to the stacking speeds is determined; (b) the amplitude data and the product are migrated at an initial migration speed to give a migrated amplitude image and a migrated product image, respectively; (c) a ratio is established between the migrated product image data and the migrated amplitude image data to give a migrated position speed; and (d) steps (b) and (c) are iterated in such a way that the migration speed of each iteration is the same as the migrated position speed from the preceding iteration, until the deviation between the migrated position speed of the final iteration (n) and that of the penultimate iteration (n-1) is below a predetermined threshold.
摘要翻译：公开了一种介质的物理属性迁移方法。该方法包括形成与介质的区域相关联的至少一组地震迹线集合并且根据预定标准进行分类，并且使用与所述区域相关的堆叠速度场，基于所述地震迹线收集来生成堆叠部分。根据该方法，（a）确定与轨迹幅度有关的项和与堆积速度相关的项的乘积; （b）幅度数据和产品以初始迁移速度迁移以分别给出迁移的幅度图像和迁移的产品图像; （c）在迁移的产品图像数据和迁移的幅度图像数据之间建立比例以提供迁移的位置速度; 和（d）步骤（b）和（c）被迭代，使得每次迭代的迁移速度与从前一次迭代的迁移位置速度相同，直到最终迭代的迁移位置速度之间的偏差（n）和倒数第二次迭代次数（n-1）低于预定阈值。

5. 发明申请

WO1998015849A1 METHOD OF GENERATING A FOLD DISTRIBUTION AND OF EVALUATING A SEISMIC SURVEY 审中-公开
标题翻译：生成折叠分布和评估地震调查的方法
公开(公告)号：WO1998015849A1
公开(公告)日：1998-04-16
申请号：PCT/GB1997002791
申请日：1997-10-09
申请人： GECO-PRAKLA (UK) LIMITED , FERBER, Ralf-Gunter
发明人： GECO-PRAKLA (UK) LIMITED
IPC分类号： G01V01/36
CPC分类号： G01V1/003 , G01V1/362 , G01V2210/522
摘要： A method of generating a fold distribution for a seismic survey comprises selecting a bin in a survey area in which there is a plurality of seismic sources and seismic receivers. A dip ( theta ) and a strike ( phi ) are selected to be within predetermined ranges, and the fold is determined. The process is repeated for all other values of dip and strike within the predetermined ranges, so that the fold distribution for the bin, as a function of dip and strike, is determined. This process is then repeated for each bin in the survey area. The fold distribution will show whether the disposition of the seismic sources and seismic receivers is acceptable, or whether unacceptable shadow zones are present.
摘要翻译：产生地震测量的折叠分布的方法包括在其中存在多个地震源和地震接收器的勘测区域中选择一个仓。浸渍（theta）和打击（phi）被选择在预定范围内，并确定折痕。对于在预定范围内的所有其它浸渍和重复的值重复该过程，从而确定作为浸渍和打击的函数的料仓的折叠分布。然后对测量区域中的每个仓重复该过程。折叠分布将显示地震源和地震接收机的布置是否可接受，或者是否存在不可接受的阴影区域。

6. 发明申请

WO1997026559A1 METHOD FOR REMOVING BOREHOLE RUGOSITY NOISE FROM WELL LOG DATA 审中-公开
标题翻译：从井记录数据中去除井眼RU噪声的方法
公开(公告)号：WO1997026559A1
公开(公告)日：1997-07-24
申请号：PCT/US1996000449
申请日：1996-01-16
申请人： MOBIL OIL CORPORATION
发明人： MOBIL OIL CORPORATION , KEYS, Robert, G. , NIETO, John, A. , PANN, Keh , SCHMITT, Denis, P.
IPC分类号： G01V01/36
CPC分类号： G01V1/48 , G01V1/364 , G01V2210/32
摘要： A method for removing sinusoidal noise without affecting the response of the formation means that the actual formation responses of the logging tools are recovered, and the logs can be used quantitatively. Removal of sinusoidal noise from a log is accomplished in three steps. First, the log is reduced to a zero-mean, stationary series. Second, the wavenumber of the sinusoidal noise is identified by its peak in the Fourier amplitude spectrum (18). And third, the noise is removed by applying a zero-phase notch filter (46). In order to preserve the quantitative data integrity, the low wavenumber trend is kept. Preserving the quantitative data integrity is accomplished by approximating the log with a least-squares cubic spline which retains the overall log character, ignoring the sinusoidal noise. A zero mean stationary series is formed by subtracting the least-squares cubic spline from the data. The remaining steps, Fourier analysis and filtering are performed on the difference series. Recombining the filtered series with the spline restores the log data without the sinusoidal noise.
摘要翻译：一种在不影响地层响应的情况下消除正弦噪声的方法意味着恢复测井工具的实际地层响应，可以定量使用测井。从日志中去除正弦噪声分三步完成。首先，日志被减少到零均值，固定的系列。第二，正弦噪声的波数由傅立叶振幅谱中的峰值识别（18）。第三，通过应用零相位陷波滤波器（46）去除噪声。为了保持定量数据的完整性，保持低波数趋势。保持定量数据完整性是通过用保留总体对数字符的最小二乘三次样条逼近对数来实现的，忽略正弦噪声。通过从数据中减去最小二乘三次样条来形成零平均静止序列。对差分序列执行剩余步骤，傅立叶分析和滤波。将滤波后的系列与样条重新组合可恢复日志数据，而不会产生正弦噪声。

7. 发明申请

WO1994028439A1 QUALITY ASSURANCE OF SPATIAL SAMPLING FOR DMO 审中-公开
标题翻译： DMO空间采样质量保证
公开(公告)号：WO1994028439A1
公开(公告)日：1994-12-08
申请号：PCT/US1994005676
申请日：1994-05-20
申请人： WESTERN ATLAS INTERNATIONAL, INC.
发明人： WESTERN ATLAS INTERNATIONAL, INC. , BEASLEY, Craig, J. , WORKMAN, Ricky, L.
IPC分类号： G01V01/36
CPC分类号： G01V1/362 , G01V1/3861 , G01V2210/522
摘要： This invention provides a method for examining the geometry of the disposition of a plurality of sources (18-24) and receivers (10-16) over an area to be surveyed with a view to optimizing the array to avoid data shadow zones and to optimize the resulting seismic image. The method depends upon studying the statistical distribution of dip polarity in dip bins along selected CMP azimuths.
摘要翻译：本发明提供了一种用于在待测区域上检查多个源（18-24）和接收器（10-16）的布置的几何形状的方法，以便优化阵列以避免数据阴影区域并优化得到的地震图像。该方法取决于研究沿着选定的CMP方位角的浸渍箱中浸渍极性的统计分布。

8. 发明申请

WO1994010586A1 A METHOD FOR COMPENSATING 3- DMO FOR THE EFFECTS OF AN INHOMOGENEOUS EARTH 审中-公开
标题翻译：一种用于补偿3-DMO用于不均匀地球的影响的方法
公开(公告)号：WO1994010586A1
公开(公告)日：1994-05-11
申请号：PCT/US1993007494
申请日：1993-08-10
申请人： WESTERN ATLAS INTERNATIONAL, INC.
发明人： WESTERN ATLAS INTERNATIONAL, INC. , GONZALEZ, Alfonso , MOBLEY, Everett, C. , CHAMBERS, Ronald, E.
IPC分类号： G01V01/36
CPC分类号： G01V1/362 , G01V2210/522
摘要： A three dimensional residual modeling operator is applied to seismic times that have been preprocessed by application of NMO and velocity independent DMO. The residual operator compensates for vertical velocity variation and anisotropy and its use precludes the need for ray tracing.
摘要翻译：将三维残差建模算子应用于通过应用NMO和速度独立DMO进行预处理的地震时间。残余运算符补偿垂直速度变化和各向异性，并且其使用排除了对光线追踪的需要。

9. 发明申请

WO1998019181A1 METHOD AND SYSTEM FOR INCREASING FOLD TO STREAMER LENGTH RATIO 审中-公开
标题翻译：方法和系统增加折叠长度比率
公开(公告)号：WO1998019181A1
公开(公告)日：1998-05-07
申请号：PCT/US1997019355
申请日：1997-10-22
申请人： PGS EXPLORATION (US), INC.
发明人： PGS EXPLORATION (US), INC. , JACOBSEN, Nils-Erik , RONNINGEN, Rolf , VAAGE, Svein, Torleif
IPC分类号： G01V01/36
CPC分类号： G01V1/3808
摘要： A method and system are provided for use in marine seismic data surveys to increase fold and offset without increasing streamer length or drag on the streamer boat. Generally the method comprises the use of a second source boat positioned in the streamer path and firing the second source (S2) at a time before the recording of information from the first source (S1) is finished. By positioning the second source (S2) about one streamer length in front of the closest hydrophone (R1), the fold is increased by two for the same length streamer.
摘要翻译：提供了一种用于海洋地震数据调查的方法和系统，以增加折叠和偏移，而不增加流光船长度或拖缆。通常，该方法包括使用位于流光路径中的第二源舟，并且在来自第一源（S1）的信息的记录完成之前的时间点火第二源（S2）。通过将第二源（S2）定位在最近的水听器（R1）前面的一个拖缆长度上，对于相同长度的拖缆，折叠增加了两倍。

10. 发明申请

WO1997025632A1 NOISE FILTERING METHOD FOR SEISMIC DATA 审中-公开
标题翻译：噪声数据的噪声滤波方法
公开(公告)号：WO1997025632A1
公开(公告)日：1997-07-17
申请号：PCT/GB1997000055
申请日：1997-01-08
申请人： GECO A/S , OZBEK, Ali
发明人： GECO A/S
IPC分类号： G01V01/36
CPC分类号： G01V1/364 , G01V2210/324 , G01V2210/3246
摘要： A method for filtering noise from discrete noisy seismic signals in a time interval ([1, ..., T]) is provided, said method comprising the steps of using said noisy seismic signals for determining at least one reference channel (x(t)) for said time interval as an estimate of said noise; determining coefficients for M temporally local filters (w(i, t)), said filters forming a filter bank, and M being a number equal to or larger than two, by minimizing a cost function (J(t)) representing a measure of the error of the output of said filter bank; and applying said filter bank to said at least one estimate (x(t)) to determine M filtered estimates of said noise. The filtered estimates are multiplied with temporal windows (h(i, t)).
摘要翻译：提供了一种用于在时间间隔（[1，...，T]）中从离散噪声地震信号中滤除噪声的方法，所述方法包括以下步骤：使用所述噪声地震信号来确定至少一个参考信道（x ））作为所述噪声的估计; 确定M个时间局部滤波器（w（i，t））的系数，所述滤波器形成一个滤波器组，并且M是等于或大于2的数，通过最小化代表度量的成本函数（J（t））所述滤波器组的输出误差; 以及将所述滤波器组应用于所述至少一个估计（x（t））以确定所述噪声的M个滤波估计。滤波估计与时间窗（h（i，t））相乘。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式