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1.发明授权公开(公告)号：US08559275B2
公开(公告)日：2013-10-15
申请号：US13585213
申请日：2012-08-14
申请人： John J. Sallas
发明人： John J. Sallas
IPC分类号： G01V1/00
摘要： A sweep generator is employed to generate a sweep to be used by a seismic vibrator device for generating a desired target output spectrum, wherein the frequency sweep is designed so as to comply with one or more constraints imposed by the seismic vibrator device and/or imposed by the environment in which the device is to be used. In one embodiment, a sweep generator determines a sweep for achieving a desired target output spectrum by a given seismic vibrator device in compliance with at least a pump flow constraint imposed by the seismic vibrator device. In another embodiment, a sweep generator determines a sweep for achieving a desired target output spectrum by a given seismic vibrator device in compliance with all of multiple operational constraints of the seismic vibrator device, such as both mass displacement and pump flow constraints. Environmental constraints may also be accounted for in certain embodiments.
摘要翻译： 采用扫描发生器来产生要由地震振动器装置用于产生期望的目标输出频谱的扫描，其中频率扫描被设计成符合地震振动器装置施加的一个或多个约束和/或施加 由设备使用的环境。 在一个实施例中，扫描发生器确定用于通过至少由地震振动器装置施加的泵流约束由给定的地震振动器装置实现期望的目标输出频谱的扫描。 在另一个实施例中，扫描发生器确定用于通过符合地震振动器装置的所有多个操作约束（例如质量位移和泵流限制）的给定地震振动装置来实现所需目标输出频谱的扫描。 在某些实施方案中也可以考虑环境约束。
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公开(公告)号：US20130163381A1
公开(公告)日：2013-06-27
申请号：US13337396
申请日：2011-12-27
申请人： John J. SALLAS
发明人： John J. SALLAS
IPC分类号： G01V1/36
CPC分类号： G01V1/005
摘要： A method for seismic prospecting that includes a step of deploying plural vibratory sources on the ground; a step of receiving at each vibratory source a corresponding pilot signal for driving the vibratory source; a step of asynchronously actuating the vibratory sources to generate seismic waves into the ground; and a step of continuously recording seismic signals produced by the seismic waves. Pilot signals for the plural vibratory sources are obtained by spectrally shaping starting sequences into continuous pseudorandom sequences that are weakly correlated over a predetermined time interval.
摘要翻译： 一种地震勘探方法，包括在地面上部署多个振动源的步骤; 在每个振动源处接收用于驱动振动源的相应导频信号的步骤; 异步地致动振动源以产生地震波到地面的步骤; 以及连续记录由地震波产生的地震信号的步骤。 通过将起始序列光谱整形成在预定时间间隔内弱相关的连续伪随机序列来获得多个振动源的导频信号。
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公开(公告)号：US20090010103A1
公开(公告)日：2009-01-08
申请号：US11774055
申请日：2007-07-06
申请人： John J. Sallas , John B. Gibson
发明人： John J. Sallas , John B. Gibson
IPC分类号： G01V1/36
CPC分类号： G01V1/005 , G01V1/37 , G01V2210/127
摘要： A method for the simultaneous operation of multiple seismic vibrators using unique modified pseudorandom sweeps and recovery of the transmission path response from each vibrator is disclosed. The vibrator sweeps are derived from pseudorandom binary sequences modified to be weakly correlated over a time window of interest, spectrally shaped and amplitude level compressed. Cross-correlation with each pilot signal is used to perform an initial separation of the composite received signal data set. Recordings of the motion of each vibrator are also cross-correlated with each pilot, windowed, and transformed to form a source cross-spectral density matrix in the frequency domain useful for source signature removal and for additional crosstalk-suppression between the separated records. After source signature removal in the frequency domain an inverse transform is applied to produce an estimate of each source-to-receiver earth response in the time domain. The method has application to both land and marine geophysical exploration.
摘要翻译： 公开了一种使用独特的修改的伪随机扫描同时操作多个地震振动器并且从每个振动器恢复传输路径响应的方法。 振动器扫描源自在所关注的时间窗口被修改为弱相关的伪随机二进制序列，频谱形状和振幅水平被压缩。 使用与每个导频信号的互相关来执行复合接收信号数据集的初始分离。 每个振动器的运动记录也与每个导频相互交叉，进行窗口化和变换，以形成频域中的源交叉谱密度矩阵，可用于源签名去除和分离记录之间的附加串扰抑制。 在频域中的源签名去除之后，应用逆变换以在时域中产生每个源到接收机地球响应的估计。 该方法适用于陆地和海洋地球物理勘探。
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公开(公告)号：US4930113A
公开(公告)日：1990-05-29
申请号：US331615
申请日：1989-03-30
申请人： John J. Sallas
发明人： John J. Sallas
IPC分类号： G01V1/04 , G10K11/178
CPC分类号： G10K11/1788 , G01V1/04 , G10K2210/10 , G10K2210/3037 , G10K2210/501
摘要： Air wave noise caused by a vibrating baseplate on a seismic vibrator is reduced or eliminated through active cancellation of sound. In active cancellation, the detection of acceleration of the baseplate is used to form a counterpart wave which is equal in amplitude but opposite in phase; a speaker produces an opposite air wave to cancel the baseplate air wave.
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5.发明授权
公开(公告)号：US4670863A
公开(公告)日：1987-06-02
申请号：US799883
申请日：1985-11-20
申请人： John J. Sallas , Toby R. Trevino
发明人： John J. Sallas , Toby R. Trevino
CPC分类号： G01V1/04
摘要： A vibrator seismic source has a sweep generator for providing a pilot signal and sensors for generating a feedback signal representative of the force imparted to the ground by the vibrator pad. Circuitry is incorporated for separating the fundamental signal from the feedback signal and for separating the distortion from the feedback signal. Means are provided for generating a control signal for controlling the action of the vibrator means. Included are means for reducing the amplitude of the pilot signal a designated amount, determined by the distortion, and means for algebraically summing the reduced amplitude pilot signal and the fundamental signal to provide an error signal. The error signal is input to a loop filter to perform real time correction of the control signal. The reduced amplitude pilot signal is input to means for adjusting the control signal for trends in the distortion. Additionally, the control system employs a phase detector circuit that outputs any phase difference between the feedback and pilot signals. The phase difference is applied to the control signal to shift the feedback signal phase to correspond to the pilot signal.
摘要翻译： 振动器地震源具有用于提供导频信号的扫描发生器和用于产生表示由振动器垫传递给地面的力的反馈信号的传感器。 引入电路用于将基本信号与反馈信号分离，并将失真与反馈信号分离。 提供了用于产生用于控制振动器装置的作用的控制信号的装置。 包括用于减小由失真确定的指定量的导频信号的幅度的装置，以及用于对减小的幅度导频信号和基本信号进行代数求和以提供误差信号的装置。 误差信号被输入到环路滤波器，以执行控制信号的实时校正。 减小的幅度导频信号被输入到用于调整失真趋势的控制信号的装置。 此外，控制系统采用相位检测器电路，其输出反馈和导频信号之间的任何相位差。 将相位差施加到控制信号，以使反馈信号相位相应于导频信号。
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公开(公告)号：US09348042B2
公开(公告)日：2016-05-24
申请号：US13337431
申请日：2011-12-27
申请人： John J. Sallas
发明人： John J. Sallas
摘要： A seismic source configured to generate seismic waves underground. The source includes a tank configured to be buried underground, the tank having a cavity; an actuation mechanism provided inside the cavity, wherein the actuation mechanism is configured to have at least one movable part that moves back and forth to generate a seismic wave having a desired frequency; and a first fluid provided inside the cavity and around the actuation mechanism and configured to transform the back and forth movement of the at least one movable part into a varying pressure that directly acts on walls of the tank.
摘要翻译： 地震源被配置为在地下产生地震波。 源包括配置为埋在地下的罐，罐具有空腔; 设置在所述腔体内的致动机构，其中所述致动机构被配置为具有来回移动的至少一个可移动部件以产生具有期望频率的地震波; 以及第一流体，其设置在所述空腔内并且围绕所述致动机构并且被配置为将所述至少一个可移动部件的所述前后运动变换成直接作用在所述罐的壁上的变化压力。
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公开(公告)号：US08792300B2
公开(公告)日：2014-07-29
申请号：US13335093
申请日：2011-12-22
申请人： John J. Sallas
发明人： John J. Sallas
CPC分类号： G01V1/005
摘要： Computer software, computer and method for generating with a computing device a desired pilot signal for driving a vibratory source to generate seismic waves. The method includes steps for compressing a pilot signal in a force domain and also compressing a mass displacement in a displacement domain. The resulting desired pilot signal boosts the low-frequency end of the vibratory source.
摘要翻译： 用于利用计算设备产生用于驱动振动源以产生地震波的期望导频信号的计算机软件，计算机和方法。 该方法包括用于压缩力域中的导频信号并且还压缩位移域中的质量位移的步骤。 所得到的所需导频信号提升振动源的低频端。
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公开(公告)号：US5046056A
公开(公告)日：1991-09-03
申请号：US533656
申请日：1990-06-05
申请人： John J. Sallas , Jack G. Clemens
发明人： John J. Sallas , Jack G. Clemens
摘要： A self-orienting vertically sensitive accelerometer is disclosed for measuring a vertical component of acceleration independently of the orientation of the accelerometer. The accelerometer of the present invention includes a spherical plastic shell having a plurality of perforations disposed therein and a thin film of metallic coated piezoelectric polymer bonded to the exterior thereof, forming a small diaphragm at each perforation. In response to acceleration a dynamic pressure is developed within a fluid mass partially filling the spherical plastic shell which creates a strain and resultant charge in each small diaphragm of piezoelectric polymer. The vast difference in density between the fluid mass and the air in the remaining volume of the spherical plastic shell permits the charge developed in each small diaphragm under fluid pressure to be attributed solely to the vertical component of acceleration applied to the fluid mass. In a preferred embodiment of the present invention the self-orienting vertically sensitive accelerometer is mounted within a low density open cell foam and utilized within a marine seismic streamer wherein orientation of each accelerometer is not easily controlled.
摘要翻译： 公开了一种独立于加速度计的取向的用于测量加速度的垂直分量的自定向垂直灵敏加速度计。 本发明的加速度计包括具有多个穿孔的球形塑料外壳，和其外部粘合有金属涂敷的压电聚合物的薄膜，在每个穿孔处形成小隔膜。 响应于加速度，在流体质量部分填充球形塑料壳体内产生动态压力，其在压电聚合物的每个小隔膜中产生应变和所得电荷。 在球形塑料壳的剩余体积中，流体质量和空气之间的密度差异巨大，允许在流体压力下在每个小隔膜中产生的电荷仅归因于施加到流体质量的加速度的垂直分量。 在本发明的优选实施例中，自定向垂直敏感加速度计安装在低密度开孔泡沫中，并且在海洋地震拖缆中使用，其中每个加速度计的取向不容易控制。
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公开(公告)号：US4918668A
公开(公告)日：1990-04-17
申请号：US304786
申请日：1989-01-30
申请人： John J. Sallas
发明人： John J. Sallas
IPC分类号： G01V1/02
CPC分类号： G01V1/006 , Y10S367/905
摘要： A method of reducing horizontally propagating pressure waves in marine seismic exploration improves the signal-to-noise ratio at associated receivers and reduces interference at unassociated receivers. Marine vibrators are arranged into an array with a given separation between each vibrator, so that horizontally propagating pressure waves from the vibrators which generally traverse the array are out-of-phase at most frequencies of vibration. The amplitude output from each vibrator varies with the output frequency of each vibrator to maximize the cancellation of out-of-phase pressure waves along the array. A receiver, which usually includes a plurality of hydrophones disposed in a streamer, is spaced from the marine vibrators at a distance sufficient to establish the receiver as being in the far-field. The output of each of the marine vibrators is locked in phase and frequency with a known pilot signal so that downwardly propagating pressure waves are substantially unaffected. The overall effect is a narrowing of the radiation pattern of the pressure waves. The resulting radiation pattern effectively directs pressure waves downwardly toward an underwater land formation, and reduces horizontally propagating pressure waves which normally result in interference with marine seismic receivers.
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公开(公告)号：US20130163386A1
公开(公告)日：2013-06-27
申请号：US13337431
申请日：2011-12-27
申请人： John J. SALLAS
发明人： John J. SALLAS
IPC分类号： G01V1/135
摘要： A seismic source configured to generate seismic waves underground. The source includes a tank configured to be buried underground, the tank having a cavity; an actuation mechanism provided inside the cavity, wherein the actuation mechanism is configured to have at least one movable part that moves back and forth to generate a seismic wave having a desired frequency; and a first fluid provided inside the cavity and around the actuation mechanism and configured to transform the back and forth movement of the at least one movable part into a varying pressure that directly acts on walls of the tank.
摘要翻译： 地震源被配置为在地下产生地震波。 源包括配置为埋在地下的罐，罐具有空腔; 设置在所述腔体内的致动机构，其中所述致动机构被配置为具有来回移动的至少一个可移动部件以产生具有期望频率的地震波; 以及第一流体，其设置在所述空腔内并且围绕所述致动机构并且被配置为将所述至少一个可移动部件的所述前后运动变换成直接作用在所述罐的壁上的变化压力。
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