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1.发明申请公开(公告)号：US20140241117A1
公开(公告)日：2014-08-28
申请号：US13780043
申请日：2013-02-28
IPC分类号： G01V1/38
CPC分类号： G01V1/3808 , G01V1/005 , G01V1/006 , G01V2210/127
摘要： There is provided herein a method of seismic acquisition that utilizes an arrangement of marine sources where each source is positioned at a water depth shallow enough for the surface ghost notch to fall at a frequency greater than or equal to the maximum radiated frequency of interest. If the marine seismic source has a ratio of signal bandwidth to maximum frequency that is less than one half, then it is possible to deploy it at a greater depth at which ghost notches fall below and above its frequency band but not in it. Further, by placing two or more sources at different depths for the same frequency, any undesired nulls in the radiation pattern caused by the deeper tow can be filled in.
摘要翻译： 这里提供了一种利用海洋源的布置的地震采集方法，其中每个源位于足够深的水深处，以使表面重影陷波以大于或等于感兴趣的最大辐射频率的频率下降。 如果海洋地震源具有小于一半的信号带宽与最大频率的比率，则可以以更大的深度部署它，其中，幽灵陷波低于和高于其频带，但不在其中。 此外，通过将两个或更多个源放置在相同频率的不同深度处，可以填充由较深的丝束引起的辐射图中的任何不期望的零点。
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2.发明授权System and method for preventing cavitation in controlled-frequency marine seismic source arrays 有权在受控频率海洋地震源阵列中防止气蚀的系统和方法公开(公告)号：US09329292B2
公开(公告)日：2016-05-03
申请号：US13780043
申请日：2013-02-28
CPC分类号： G01V1/3808 , G01V1/005 , G01V1/006 , G01V2210/127
摘要： There is provided herein a method of seismic acquisition that utilizes an arrangement of marine sources where each source is positioned at a water depth shallow enough for the surface ghost notch to fall at a frequency greater than or equal to the maximum radiated frequency of interest. If the marine seismic source has a ratio of signal bandwidth to maximum frequency that is less than one half, then it is possible to deploy it at a greater depth at which ghost notches fall below and above its frequency band but not in it. Further, by placing two or more sources at different depths for the same frequency, any undesired nulls in the radiation pattern caused by the deeper tow can be filled in.
摘要翻译： 这里提供了一种利用海洋源的布置的地震采集方法，其中每个源位于足够深的水深处，以使表面重影陷波以大于或等于感兴趣的最大辐射频率的频率下降。 如果海洋地震源具有小于一半的信号带宽与最大频率的比率，则可以以更大的深度部署它，其中，幽灵陷波低于和高于其频带，但不在其中。 此外，通过将两个或更多个源放置在相同频率的不同深度处，可以填充由较深的丝束引起的辐射图中的任何不期望的零点。
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公开(公告)号：US20150204992A1
公开(公告)日：2015-07-23
申请号：US14602050
申请日：2015-01-21
CPC分类号： G01V1/3861 , G01V1/04 , G01V1/145 , G01V2210/1293
摘要： A method for controlling trajectory in a resonant marine seismic source comprises: controlling the source frequency and controlling the motion trajectory. Controlling the source frequency includes: estimating the source frequency from its internal state and the state of its environment; deriving a frequency error as the difference between the estimated frequency and the frequency of the desired trajectory; and driving the frequency error to zero. Controlling the motion trajectory includes: detecting a motion trajectory of the source; deriving a motion trajectory error as the difference between the desired motion trajectory and detected motion trajectory; and driving the motion trajectory error to zero.
摘要翻译： 一种用于控制谐振海洋地震源的轨迹的方法，包括：控制源频率并控制运动轨迹。 控制源频率包括：从内部状态估计源频率及其环境状态; 导出频率误差作为所需轨迹的估计频率和频率之间的差; 并将频率误差驱动到零。 控制运动轨迹包括：检测源的运动轨迹; 导出运动轨迹误差作为所需运动轨迹与检测到的运动轨迹之间的差; 并将运动轨迹误差驱动到零。
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公开(公告)号：US20150120200A1
公开(公告)日：2015-04-30
申请号：US14525451
申请日：2014-10-28
IPC分类号： G01V1/28
CPC分类号： G01V1/303 , G01V1/005 , G01V2210/6222
摘要： A computer-implemented process includes: performing a first foil waveform inversion on an initial subsurface attribute model using low frequency, known source-signature data and low frequency humming seismic data to generate a first updated subsurface attribute model; and performing a second full waveform inversion on the first updated subsurface attribute model using low-frequency, narrowband sweeping known source-signature data and low-frequency, swept seismic data to generate a second updated subsurface attribute model. The process may be performed by a suitably programmed computing apparatus, the program residing on some form of non-transitory program storage medium.
摘要翻译： 计算机实现的过程包括：使用低频，已知的源签名数据和低频哼唱地震数据在初始地下属性模型上执行第一箔波形反转，以产生第一更新的地下属性模型; 以及使用低频窄带扫描已知源签名数据和低频扫频地震数据在所述第一更新的地下属性模型上执行第二全波形反转，以生成第二更新的地下属性模型。 该过程可以由适当编程的计算设备执行，该程序驻留在某种形式的非暂时性程序存储介质上。
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5.发明授权公开(公告)号：US09702991B2
公开(公告)日：2017-07-11
申请号：US14487317
申请日：2014-09-16
CPC分类号： G01V1/04 , G01V1/005 , G01V1/0475 , G01V1/38 , G01V1/40
摘要： The output spectrum of a controllable swept-frequency acoustic source at a given frequency can be controlled by making the rate of change of frequency equal to the desired output power spectrum divided by the squared envelope amplitude of the source output signal, both measured at the time after the start of its frequency sweep at which the sweep frequency passes through the given frequency. The system and method can also be used to correct for propagation effects outside the source by dividing the desired spectrum by the propagation effect. The method can further be used either to obtain an output spectrum of a desired shape from a source operating at maximum output or to design a sweep of a minimum feasible duration that will result in an output spectrum of a specified shape and with a specified amplitude.
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公开(公告)号：US20130028051A1
公开(公告)日：2013-01-31
申请号：US13547922
申请日：2012-07-12
CPC分类号： G01V1/288 , G01V2210/123 , G01V2210/125
摘要： There is provided herein a method of passive seismic acquisition that utilizes real time or near real time computation to reduce the volume of data that must be moved from the field to the processing center. Much of the computation that is traditionally applied to passive source data can be done in a streaming fashion. The raw data that passes through a field system can be processed in manageable pieces, after which the original data can be discarded and the intermediate results accumulated and periodically saved. These saved intermediate results are at least two, more likely three, orders of magnitude smaller than the raw data they are derived from. Such a volume of data is trivial to store, transport or transmit, allowing passive seismic acquisition to be practically used for continuous near-real-time seismic surveillance.
摘要翻译： 这里提供了一种无源地震采集方法，利用实时或接近实时的计算来减少必须从现场到处理中心的数据量。 传统上应用于被动源数据的大部分计算可以以流式方式完成。 通过现场系统的原始数据可以在可管理的部分进行处理，之后可以丢弃原始数据，累积并定期保存中间结果。 这些保存的中间结果至少比原始数据少两个，更有可能三个数量级。 这样的数据量对于存储，传输或传输是微不足道的，允许被动地震采集实际上用于连续近实时地震监测。
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公开(公告)号：US11269094B2
公开(公告)日：2022-03-08
申请号：US15968073
申请日：2018-05-01
摘要： A compact seismic source for seismic acquisition generating a humming signal includes a casing and a low-frequency reciprocating drive. The casing defines a fluid tight chamber and comprises a first casing section and a second casing section of roughly equal mass. The drive is disposed within the fluid tight chamber and, in operation, reinforces the natural reciprocating oscillation of the first and second casing sections relative to one another at a low seismic frequency. In one aspect, this action omni-directionally radiates the low frequency, humming seismic signal. On another aspect, the compact seismic source is substantially smaller than the wavelength of the low seismic frequency. Such a compact source may be deployed to omni-directionally radiate a low frequency, humming seismic signal during a seismic survey.
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公开(公告)号：US10139512B2
公开(公告)日：2018-11-27
申请号：US14602050
申请日：2015-01-21
摘要： A method for controlling trajectory in a resonant marine seismic source comprises: controlling the source frequency and controlling the motion trajectory. Controlling the source frequency includes: estimating the source frequency from its internal state and the state of its environment; deriving a frequency error as the difference between the estimated frequency and the frequency of the desired trajectory; and driving the frequency error to zero. Controlling the motion trajectory includes: detecting a motion trajectory of the source; deriving a motion trajectory error as the difference between the desired motion trajectory and detected motion trajectory; and driving the motion trajectory error to zero.
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公开(公告)号：US09983322B2
公开(公告)日：2018-05-29
申请号：US14626307
申请日：2015-02-19
摘要： A compact seismic source for seismic acquisition generating a humming signal includes a casing and a low-frequency reciprocating drive. The casing defines a fluid tight chamber and comprises a first casing section and a second casing section of roughly equal mass. The drive is disposed within the fluid tight chamber and, in operation, reinforces the natural reciprocating oscillation of the first and second casing sections relative to one another at a low seismic frequency. In one aspect, this action omni-directionally radiates the low frequency, humming seismic signal. On another aspect, the compact seismic source is substantially smaller than the wavelength of the low seismic frequency. Such a compact source may be deployed to omni-directionally radiate a low frequency, humming seismic signal during a seismic survey.
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10.发明申请SYSTEM AND METHOD FOR PERFORMING SEISMIC SURVEYS WITH A CONTROLLED SOURCE USING MAXIMUM-POWER SWEEPS 有权使用最大功率扫描对受控源执行地震测量的系统和方法公开(公告)号：US20150092517A1
公开(公告)日：2015-04-02
申请号：US14487317
申请日：2014-09-16
IPC分类号： G01V1/04
CPC分类号： G01V1/04 , G01V1/005 , G01V1/0475 , G01V1/38 , G01V1/40
摘要： The output spectrum of a controllable swept-frequency acoustic source at a given frequency can be controlled by making the rate of change of frequency equal to the desired output power spectrum divided by the squared envelope amplitude of the source output signal, both measured at the time after the start of its frequency sweep at which the sweep frequency passes through the given frequency. The system and method can also be used to correct for propagation effects outside the source by dividing the desired spectrum by the propagation effect. The method can further be used either to obtain an output spectrum of a desired shape from a source operating at maximum output or to design a sweep of a minimum feasible duration that will result in an output spectrum of a specified shape and with a specified amplitude.
摘要翻译： 可以通过使频率变化率等于期望的输出功率谱除以源输出信号的平方包络幅度来控制给定频率处的可控扫频声源的输出频谱，这两者都是在此时测得的 在扫频频率通过给定频率的频率扫描开始之后。 该系统和方法还可用于通过将所需频谱除以传播效应来校正源外的传播效应。 该方法还可以用于从在最大输出处操作的源获得期望形状的输出光谱，或者设计将导致指定形状和指定幅度的输出光谱的最小可行持续时间的扫描。
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