-
公开(公告)号：US20080312878A1
公开(公告)日：2008-12-18
申请号：US11762509
申请日：2007-06-13
CPC分类号： G01V1/36 , G01V2210/56
摘要： A technique includes obtaining particle motion data and pressure data that are acquired by seismic sensors while in tow. The sensors are part of a plurality of streamers, and the pressure and particle motion data contain surface ghosts. The technique includes processing the particle motion data and the pressure data to generate a data set that is indicative of a pressure wavefield at positions between the streamers and is substantially free of the surface ghosts.
摘要翻译： 一种技术包括获取由地震传感器采集的粒子运动数据和压力数据。 传感器是多个拖缆的一部分，并且压力和粒子运动数据包含表面重影。 该技术包括处理粒子运动数据和压力数据以产生指示拖缆之间位置处的压力波场并且基本上没有表面重影的数据集。
-
公开(公告)号：US07466625B2
公开(公告)日：2008-12-16
申请号：US11426058
申请日：2006-06-23
IPC分类号： G01V1/38
CPC分类号： G01V1/201 , G01V1/36 , G01V1/3808 , G01V2210/32 , G01V2210/34 , G01V2210/56
摘要： A method includes recording a first set of data using a first type of sensor; recording a second set of data using a second type of sensor, the first and second sets of data being contemporaneously acquired by co-located sensors; and removing noise from the first data set using the second data set. An apparatus includes a survey vessel towing an array of towed streamers including a plurality of paired, co-located sensors densely distributed along the streamers. A first one of each sensor pair is of a first type and a second one of each sensor pair is of a second type. A computing apparatus records a first set of data acquire by the first type of sensor and a second data set acquire by the second type of sensor. The computing apparatus then removes noise from the first data set using the second data set.
摘要翻译： 一种方法包括使用第一类型的传感器记录第一组数据; 使用第二类型的传感器记录第二组数据，所述第一和第二组数据同时由同位传感器获取; 以及使用所述第二数据集从所述第一数据集中去除噪声。 一种装置包括一个拖曳拖曳拖缆阵列的测量船，包括沿拖缆密集分布的多个成对的共同定位的传感器。 每个传感器对中的第一个是第一类型，每个传感器对中的第二个是第二类型。 计算装置记录由第一类型的传感器获取的第一组数据和由第二类型的传感器采集的第二数据集。 计算设备然后使用第二数据集从第一数据集中去除噪声。
-
公开(公告)号：US20080294347A1
公开(公告)日：2008-11-27
申请号：US12129585
申请日：2008-05-29
IPC分类号： G01V1/28
CPC分类号： G01V1/364 , G01V2210/27
摘要： A method of acquiring or processing multi-component seismic data obtained from seismic signals propagating in a medium, the method comprising the steps of: selecting a first portion of the seismic data in which the first arrival contains only upwardly propagating seismic energy above the seafloor; and determining a first calibration filter from the first portion of the seismic data, the first calibration filter being to calibrate a first component of the seismic data relative to a second component of the seismic data.
摘要翻译： 一种获取或处理从在介质中传播的地震信号获得的多分量地震数据的方法，所述方法包括以下步骤：选择第一部分地震数据的第一部分，其中第一到达仅包含在海底上方向上传播的地震能量; 以及从地震数据的第一部分确定第一校准滤波器，第一校准滤波器是相对于地震数据的第二分量来校准地震数据的第一分量。
-
公开(公告)号：US07418349B2
公开(公告)日：2008-08-26
申请号：US10502451
申请日：2003-01-20
CPC分类号： G01V1/286 , G01V1/362 , G01V2210/53
摘要： A method of processing seismic data that includes including first and second modes of seismic energy where the second mode has been generated by partial mode conversion of the first mode at a boundary face of a layer of the seabed includes the step of cross-correlating a trace acquired at a receiver and including events corresponding to the first mode with a trace acquired at the same receiver and including events corresponding to the second mode. An event in the cross-correlated data that corresponds to partial mode conversion is identified, and the amplitude of this event is normalized, for example relative to the amplitude of the peak in the cross-correlogram at zero time delay. Information about the effects of the static shift produced by the layer and/or about vector infidelity can be arrived from normalized cross-correlograms for receivers in a receiver array.
摘要翻译： 一种处理地震数据的方法，包括包括地震能量的第一和第二模式，其中通过在海底层的边界面处的第一模式的部分模式转换已经产生第二模式，包括将迹线互相关的步骤 在接收机处获取并且包括与在第一模式相对应的事件，其中在同一接收机处获取的跟踪包括与第二模式对应的事件。 识别对应于部分模式转换的交叉相关数据中的事件，并且该事件的幅度例如相对于零时间延迟的交叉相关中的峰值的幅度被归一化。 关于由层产生的静态移位和/或关于向量不忠的影响的信息可以从接收机阵列中的接收机的标准化交叉相关图得出。
-
公开(公告)号：US20080049551A1
公开(公告)日：2008-02-28
申请号：US11641416
申请日：2006-12-19
CPC分类号： G01V1/364 , G01V1/38 , G01V2210/20
摘要： A method includes conditioning a set of multicomponent seismic data and sensor orientation data, the multicomponent seismic data including pressure data and particle motion data, acquired in a towed array, marine seismic survey; digital group forming the conditioned pressure data, a vertical particle motion component of the conditioned particle motion data, and the conditioned sensor orientation data; and summing the digitally group formed pressure data and the digitally group formed vertical particle motion component.
-
公开(公告)号：US08605541B2
公开(公告)日：2013-12-10
申请号：US11629339
申请日：2005-06-07
IPC分类号： G01V1/38
CPC分类号： G01V1/38 , G01V1/364 , G01V2210/56
摘要： The method presented accounts for three-dimensional effects when deghosting marine seismic data. The method relies on having second-order spatial derivatives in the cross-line direction available. The second-order cross-line derivative can be estimated directly or through indirect measurements of other wavefield quantities and by using wave-equation techniques to compute the desired term. The method preferably employs either a multicomponent streamer towed in the vicinity of the sea surface, a twin-streamer configuration near the sea-surface, or a configuration of three streamers that are separated either vertically or horizontally to estimate the second-order vertical derivative of pressure.
摘要翻译： 所提出的方法说明了海洋地震数据消失时的三维效应。 该方法依赖于在交叉线方向上具有二阶空间导数可用。 可以直接估计二阶交叉线导数，或者通过间接测量其他波场量，并通过使用波方程技术来计算所需项。 该方法优选采用在海面附近拖曳的多组分拖缆，靠近海面的双拖缆配置，或垂直或水平分离的三个拖缆的构造，以估计二次垂直导数 压力。
-
37.发明授权Mitigation of noise in marine multicomponent seismic data through the relationship between wavefield components at the free surface 有权通过自由表面波场成分之间的关系，减少海洋多组分地震资料中的噪声公开(公告)号：US08077543B2
公开(公告)日：2011-12-13
申请号：US11736392
申请日：2007-04-17
IPC分类号： G01V1/38
CPC分类号： G01V1/36 , G01V1/38 , G01V2210/32 , G01V2210/56
摘要： A method and apparatus implementing a technique for mitigating noise in seismic data are presented. The technique includes estimating a noise component in a set of multicomponent seismic data representing a recorded wavefield from the relationship at the free surface of an upgoing component and a downgoing component decomposed from the recorded wavefield; and removing the estimated noise component from the seismic data. The noise component can be estimated by decomposing a recorded wavefield into an upgoing component and a downgoing component and isolating a noise component in the recorded wavefield from the relationship of the decomposed upgoing and downgoing components at the free surface.
摘要翻译： 提出了一种实现减轻地震数据中噪声的技术的方法和装置。 该技术包括根据从记录的波场分解的上行分量和下行分量的自由表面的关系估计表示记录波场的一组多分量地震数据中的噪声分量; 并从地震数据中去除估计的噪声分量。 可以通过将记录的波场分解为上行分量和下行分量并将记录波场中的噪声分量与自由表面上的分解上行分量和下行分量的关系隔离来估计噪声分量。
-
38.发明授权Reconstructing low frequency data recordings using a spread of shallow and deep streamers 有权使用浅层和深层拖缆的扩展来重建低频数据记录公开(公告)号：US07835224B2
公开(公告)日：2010-11-16
申请号：US12058903
申请日：2008-03-31
IPC分类号： G01V1/38
CPC分类号： B63B21/56 , G01V1/36 , G01V1/3808 , G01V2210/57
摘要： A technique includes obtaining first data indicative of seismic measurements acquired by seismic sensors of a first set of towed streamers and obtaining second data indicative of seismic measurements acquired by seismic sensors of a second set of towed streamers. The second set of towed streamers is towed at a deeper depth than the first set of towed streamers. The technique includes interpolating seismic measurements based on the first and second data. The interpolation includes assigning more weight to the second data than to the first data for lower frequencies of the interpolated seismic measurements.
摘要翻译： 一种技术包括获得指示由第一组牵引拖缆的地震传感器获取的地震测量的第一数据，并且获得指示由第二组牵引拖缆的地震传感器获取的地震测量的第二数据。 拖曳拖缆的第二组拖曳深度比第一组拖曳拖缆深。 该技术包括基于第一和第二数据内插地震测量。 插值包括为第二数据分配比对于内插地震测量的较低频率的第一数据更多的权重。
-
公开(公告)号：US07715987B2
公开(公告)日：2010-05-11
申请号：US12176356
申请日：2008-07-19
CPC分类号： G01V1/286 , G01V1/362 , G01V2210/53
摘要： A method of processing seismic data that includes including first and second modes of seismic energy where the second mode has been generated by partial mode conversion of the first mode at a boundary face of a layer of the seabed includes the step of cross-correlating a trace acquired at a receiver and including events corresponding to the first mode with a trace acquired at the same receiver and including events corresponding to the second mode. An event in the cross-correlated data that corresponds to partial mode conversion is identified, and the amplitude of this event is normalized, for example relative to the amplitude of the peak in the cross-correlogram at zero time delay. Information about the effects of the static shift produced by the layer and/or about vector infidelity can be arrived from normalized cross-correlograms for receivers in a receiver array.
摘要翻译： 一种处理地震数据的方法，包括包括地震能量的第一和第二模式，其中通过在海底层的边界面处的第一模式的部分模式转换已经产生第二模式，包括将迹线互相关的步骤 在接收机处获取并且包括与在第一模式相对应的事件，其中在同一接收机处获取的跟踪包括与第二模式对应的事件。 识别对应于部分模式转换的交叉相关数据中的事件，并且该事件的幅度例如相对于零时间延迟的交叉相关中的峰值的幅度被归一化。 关于由层产生的静态移位和/或关于向量不忠的影响的信息可以从接收机阵列中的接收机的标准化交叉相关图得出。
-
40.发明申请RECONSTRUCTING LOW FREQUENCY DATA RECORDINGS USING A SPREAD OF SHALLOW AND DEEP STREAMERS 有权使用浅层和深层流水线的扩展重新构造低频数据记录公开(公告)号：US20090245021A1
公开(公告)日：2009-10-01
申请号：US12058903
申请日：2008-03-31
CPC分类号： B63B21/56 , G01V1/36 , G01V1/3808 , G01V2210/57
摘要： A technique includes obtaining first data indicative of seismic measurements acquired by seismic sensors of a first set of towed streamers and obtaining second data indicative of seismic measurements acquired by seismic sensors of a second set of towed streamers. The second set of towed streamers is towed at a deeper depth than the first set of towed streamers. The technique includes interpolating seismic measurements based on the first and second data. The interpolation includes assigning more weight to the second data than to the first data for lower frequencies of the interpolated seismic measurements.
摘要翻译： 一种技术包括获得指示由第一组牵引拖缆的地震传感器获取的地震测量的第一数据，并且获得指示由第二组牵引拖缆的地震传感器获取的地震测量的第二数据。 拖曳拖缆的第二组拖曳深度比第一组拖曳拖缆深。 该技术包括基于第一和第二数据内插地震测量。 插值包括为第二数据分配比对于内插地震测量的较低频率的第一数据更多的权重。
-
-
-
-
-
-
-
-
-
搜索结果
46 条记录 (耗时 0.029 秒)
