MÉTHODE D'ATTÉNUATION DU BRUIT HARMONIQUE EN VIBROSISMIQUE PAR FILTRAGE TEMPS-VARIANT AVEC RÉFÉRENCE
    1.
    发明申请
    MÉTHODE D'ATTÉNUATION DU BRUIT HARMONIQUE EN VIBROSISMIQUE PAR FILTRAGE TEMPS-VARIANT AVEC RÉFÉRENCE 审中-公开
    通过参考时变滤波来衰减振动噪声的方法

    公开(公告)号:WO2011144215A2

    公开(公告)日:2011-11-24

    申请号:PCT/DZ2011/000003

    申请日:2011-04-17

    CPC classification number: G01V1/375 G01V2210/3246

    Abstract: Méthode d'amélioration de la qualité des données vibrosismiques, particulièrement celles acquises en mode slip-sweep, par estimation et atténuation des différentes composantes harmoniques (voir fig. 3). On estime ces composantes à partir du signal Ground-Force, par une technique de séparation à deux options, moindres carrées, ou temps-fréquence, toutes deux adaptées à la composante à extraire et on subdivise ce bruit en classes. On calcule les harmoniques propres à l'enregistrement considéré et on procède à leur soustraction. On calcule enfin les bruits de référence relatifs à chaque classe et on procède à leur ré-estimation par une méthode à entrées/sorties multiples avec prise en charge dynamique de la bande fréquentielle, réalisable selon l'une des trois options : globale, cascade ou multi-référence, puis soustraction de l'enregistrement contaminé. On améliore la qualité des données, par une mise en forme appropriée du signal source.

    Abstract translation: 本发明涉及通过估计和衰减不同谐波分量(参见图3)来提高抗震数据的质量的方法,特别是以滑动扫描模式获取的震动数据。 所述组件是使用具有两个选项的分离技术从Ground-Force信号估计的,这两个选项即最小二乘法或时间频率,它们都适用于要提取的组件,噪声被细分为等级。 对所记录的特定的谐波进行计算和减去。 最后,使用具有动态管理频带的多输入/输出方法来计算和重新估计相对于每个类的参考噪声,其可以使用全局,级联或多参考中的三个选项之一来实现,其次是 从受污染的记录中减去。 通过适当的源信号整形来提高数据质量。

    METHOD OF USING CASCADED SWEEPS FOR SOURCE CODING AND HARMONIC CANCELLATION
    3.
    发明申请
    METHOD OF USING CASCADED SWEEPS FOR SOURCE CODING AND HARMONIC CANCELLATION 审中-公开
    用于源代码和谐波消除的方法

    公开(公告)号:WO0233442A3

    公开(公告)日:2003-01-16

    申请号:PCT/US0132226

    申请日:2001-10-17

    CPC classification number: G01V1/005 G01V1/375 G01V2210/3246

    Abstract: A method of seismic surveying using one or more vibrational seismic energy sources activated by sweep signals. The highest order harmonic that has sufficient strength to cause significant harmonic distortion of a sweep segment is determined. A number of sweep segments in excess of the number of sources is selected. Initial phase angles are selected for each sweep segment of each seismic energy source so that substantially all harmonics up to and including the highest order harmonic are suppressed. Using cascaded sweeps, seismic data are acquired and processed to substantially attenuate harmonics upto the selected order.

    Abstract translation: 一种使用一个或多个由扫描信号激活的振动地震能量的地震勘测方法。 确定具有足够强度以引起扫描段的显着谐波失真的最高阶谐波。 选择超过源数量的多个扫描段。 为每个地震能量源的每个扫描段选择初始相位角,以便抑制直到并包括最高次谐波的基本上所有的谐波。 使用级联扫描,获取并处理地震数据,以基本上衰减到所选顺序的谐波。

    VIBRO SEISMIC SOURCE SEPARATION AND ACQUISITION
    4.
    发明申请
    VIBRO SEISMIC SOURCE SEPARATION AND ACQUISITION 审中-公开
    振动地震源分离与获取

    公开(公告)号:WO2014207148A1

    公开(公告)日:2014-12-31

    申请号:PCT/EP2014/063600

    申请日:2014-06-26

    CPC classification number: G01V1/375 G01V1/005 G01V2210/50

    Abstract: Methods and systems for separating seismic data acquired using a plurality of substantially simultaneously fired sources are described. The sources use sweep sequences having low cross correlation levels to generate seismic waves, and their source signatures are determined. Using the source signatures, the wave fields associated with each of the sources are extracted from the seismic data by, for example, performing a time domain deconvolution.

    Abstract translation: 描述用于分离使用多个基本上同时燃烧的源获取的地震数据的方法和系统。 源使用具有低互相关水平的扫描序列来产生地震波,并且确定其源特征。 使用源签名,通过例如执行时域反卷积从地震数据中提取与每个源相关联的波场。

    NOISE FILTERING OF SEISMIC DATA
    5.
    发明申请
    NOISE FILTERING OF SEISMIC DATA 审中-公开
    噪声数据的噪声滤波

    公开(公告)号:WO2011045641A3

    公开(公告)日:2011-06-30

    申请号:PCT/IB2010002385

    申请日:2010-09-20

    Inventor: JI YING

    CPC classification number: G01V1/364 G01V1/375 G01V2210/324 G01V2210/3246

    Abstract: Adaptive filtering method to remove ground roll from seismic data. In an M channel adaptive filter, weights Wi are set using an adaptive algorithm based on seeking the minimum in the partial differential of cost function J. The cost function includes an expansion of the primary trace d into d = dg + ?d (where: dg is ground roll contribution and ?d = dsig + dran, where dsig is the reflected signal component and dran is a random noise component) and a corresponding expansion of the reference x into x = xg + ?x (where xg is ground roll contribution and ?x = xsig + xran; where xsig is a reflected signal component and xran is a random noise component). The delta components are included in the denominator of cost function J to provide an optimal solution of the filter coefficients biased by the reflection signal and random noise is removed.

    Abstract translation: 从地震数据中去除地面卷的自适应滤波方法。 在M信道自适应滤波器中,使用基于寻求成本函数J的偏微分中的最小值的自适应算法来设置权重Wi。成本函数包括将主跟踪d扩展为d = dg +Δd(其中: dg是地面滚动贡献,并且Δd= dsig + dran,其中dsig是反射信号分量,dran是随机噪声分量),并且参考x的对应扩展为x = xg +Δx(其中xg是地面贡献 和xx = xsig + xran;其中xsig是反射信号分量,xran是随机噪声分量)。 增量分量包括在成本函数J的分母中,以提供由反射信号偏置的滤波器系数和随机噪声被去除的最佳解。

    HIGH FIDELITY VIBRATORY SOURCE SEISMIC METHOD
    6.
    发明申请
    HIGH FIDELITY VIBRATORY SOURCE SEISMIC METHOD 审中-公开
    高密度振动源地震方法

    公开(公告)号:WO1996035965A1

    公开(公告)日:1996-11-14

    申请号:PCT/US1996006386

    申请日:1996-05-03

    CPC classification number: G01V1/375 G01V1/366 G01V2210/324 G01V2210/53

    Abstract: A method for recording and pre-processing high fidelity vibratory seismic data includes measuring the motion of the vibrator (36) which is related to the vibrator applied force times a transfer function of minimum phase, causal, linar system relating the actual vibrator output with the measured vibrator motion, determining a ratio (52) by dividing the vibratory seismic data by the measured motion of the vibrator to remove the unknown applied force leaving the earcj reflectivity times a time derivative divided by a minimum phase function, minimum phase band pass filtering the resulting ratio and performing mimimum phase deconvolution to remove the time derivative divided by the transfer function of mimimum phase. The method may also include the steps of receiver ensemble deconvolution (56), statics correction (58), F-K filtering for noise (60), zero phase spiking deconvolution (64) and model dephasing (66). The actual signal that the vibrator (36) is sending into the ground is used in pre-processing.

    Abstract translation: 一种用于记录和预处理高保真振动地震数据的方法包括测量与振动器施加的力相关的振动器(36)的运动乘以与实际振动器输出相关的最小相位因果线性系统的传递函数 测量的振动器运动,通过将振动地震数据除以振动器的测量运动来确定比例(52),以消除离开耳塞反射率的未知施加力乘以时间导数除以最小相位函数,最小相位带通滤波 产生的比例和执行最小相位去卷积以除去时间导数除以最终相的传递函数。 该方法还可以包括以下步骤:接收机集合去卷积(56),静态校正(58),用于噪声的F-K滤波(60),零相位加标解卷积(64)和模型去相位(66)。 振动器(36)发送到地面的实际信号用于预处理。

    PEAK ANALYSIS OF MULTI-DIRECTIONAL SONIC AND ULTRASONIC WAVEFORMS FOR CEMENT BOND LOGGING
    7.
    发明申请
    PEAK ANALYSIS OF MULTI-DIRECTIONAL SONIC AND ULTRASONIC WAVEFORMS FOR CEMENT BOND LOGGING 审中-公开
    用于水泥粘结记录的多方向声波和超声波的峰值分析

    公开(公告)号:WO2016069000A1

    公开(公告)日:2016-05-06

    申请号:PCT/US2014/063483

    申请日:2014-10-31

    CPC classification number: E21B47/0005 G01N29/11 G01V1/375 G01V1/50 G01V3/38

    Abstract: A method for generating a cement bond log, in some embodiments, comprises transmitting sonic or ultrasonic waves in multiple directions from a logging tool disposed in a wellbore, receiving reflected waves at the logging tool and recording waveforms based on the received waves, processing the waveforms to determine numerical values that indicate a degree of bonding associated with multiple portions of a cement sheath disposed in the wellbore, aggregating the numerical values, and generating a composite image based on the aggregated numerical values.

    Abstract translation: 在一些实施例中,用于生成水泥结合对数的方法包括从设置在井眼中的测井工具沿多个方向传播声波或超声波,在测井工具处接收反射波并基于接收的波记录波形,处理波形 以确定表示与设置在井筒中的水泥护套的多个部分相关联的结合度的数值,聚集数值,以及基于聚集的数值生成合成图像。

    METHOD OF ACQUIRING SEISMIC DATA
    8.
    发明申请
    METHOD OF ACQUIRING SEISMIC DATA 审中-公开
    获取地震数据的方法

    公开(公告)号:WO2013004724A3

    公开(公告)日:2013-07-25

    申请号:PCT/EP2012062984

    申请日:2012-07-04

    CPC classification number: G01V1/005 G01V1/375 G01V2210/169

    Abstract: The method of acquiring seismic data comprises: allocating respective binary sequences to a plurality of seismic sources (30); emitting seismic waves into a medium during an acquisition time from the plurality of seismic sources, the acquisition time being divided into a plurality of slots and activation of a seismic source in the slots being conditioned by respective bits of the binary sequence allocated to that seismic source; obtaining a seismic signal sensed by a receiver (15) after propagation of the emitted seismic waves in the medium; and combining the seismic signal with the binary sequence allocated to one of the seismic sources.

    Abstract translation: 获取地震数据的方法包括:将多个二进制序列分配给多个地震源(30); 在来自多个地震源的采集时间期间将地震波发射到介质中,所述获取时间被划分为多个时隙,并且所述时隙中的地震源的激活被由分配给所述地震源的二进制序列的相应位调节 ; 在所述介​​质中发射的地震波传播之后,获得由接收器(15)感测的地震信号; 并将地震信号与分配给一个地震源的二进制序列进行组合。

    METHOD FOR ATTENUATING HARMONIC NOISE IN VIBROSEIS BY MEANS OF REFERENCED TIME-VARIANT FILTERING
    9.
    发明申请
    METHOD FOR ATTENUATING HARMONIC NOISE IN VIBROSEIS BY MEANS OF REFERENCED TIME-VARIANT FILTERING 审中-公开
    通过参考时变滤波来衰减振动噪声的方法

    公开(公告)号:WO2011144215A3

    公开(公告)日:2012-12-06

    申请号:PCT/DZ2011000003

    申请日:2011-04-17

    CPC classification number: G01V1/375 G01V2210/3246

    Abstract: The invention relates to a method for improving the quality of vibroseismic data, particularly vibroseismic data acquired in slip-sweep mode, by estimation and attenuation of the different harmonic components (see fig. 3). Said components are estimated from the Ground-Force signal using a separation technique with two options, namely least squares or time-frequency, both of which are adapted to the component to be extracted, and the noise is subdivided into classes. The harmonics specific to the recording in question are calculated and subtracted. Finally, the reference noises relative to each class are calculated and re-estimated using a multiple input/output method with dynamic management of the frequency band, which can be achieved using one of three options: global, cascade or multi-reference, followed by subtraction from the contaminated recording. The data quality is improved by means of appropriate source signal shaping.

    Abstract translation: 本发明涉及通过估计和衰减不同谐波分量(参见图3)来提高抗震数据的质量的方法,特别是以滑动扫描模式获取的震动数据。 所述组件是使用具有两个选项的分离技术从Ground-Force信号估计的,这两个选项即最小二乘法或时间频率,它们都适用于要提取的组件,噪声被细分为等级。 对所记录的特定的谐波进行计算和减去。 最后,使用具有动态管理频带的多输入/输出方法来计算和重新估计相对于每个类的参考噪声,其可以使用全局,级联或多参考中的三个选项之一来实现,其次是 从受污染的记录中减去。 通过适当的源信号整形来提高数据质量。

    FORWARD LOOKING SEISMICS FROM DRILL-BIT
    10.
    发明申请
    FORWARD LOOKING SEISMICS FROM DRILL-BIT 审中-公开
    从钻头前进寻找地震

    公开(公告)号:WO2012154059A2

    公开(公告)日:2012-11-15

    申请号:PCT/NO2012050085

    申请日:2012-05-09

    Abstract: Methods and instrumentation for detecting and representing at least one geologic formation in front of an operating drill-bit using the vibration noise generated by the operating drill-bit as a source, comprising at least one receive array comprising more than one receive vibration sensor elements, said at least one receive array are located in one or both of i) at least one receive well, and ii) submerged in water for sub-sea operation, and beam forming at least one receive signal from the signals from said more than one receive elements of said at least one receive array, and forming at least one reference signal representing the vibrations of the operating drill-bit, and correlating said at least one receive signal with said at least one reference signal with different correlation lags, and forming a seismic representation of the at least one geologic formation in front of the drill-bit through said correlating.

    Abstract translation: 用于使用由操作钻头作为源产生的振动噪声来检测和表示在操作钻头前面的至少一个地质构造的方法和仪器,包括至少一个包括多于一个接收振动传感器元件的接收阵列, 所述至少一个接收阵列位于i)至少一个接收井中的一个或两个中,并且ii)淹没在用于海底操作的水中,并且来自所述多于一个接收的信号的波束形成至少一个接收信号 所述至少一个接收阵列的元件,以及形成表示所述操作钻头的振动的至少一个参考信号,以及将所述至少一个接收信号与所述至少一个参考信号与不同相关滞后相关联,并形成地震 通过所述相关来表示在钻头前面的至少一个地质构造。

Patent Agency Ranking