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    • 2. 发明申请
    • 탄성파 다성분 자료에 대한 중합전 EGS 구조보정 방법
    • 用于地震波多分量数据的PRESTACK EGS移动方法
    • WO2016060513A1
    • 2016-04-21
    • PCT/KR2015/010951
    • 2015-10-16
    • 한국지질자원연구원
    • 김병엽변중무설순지이호영
    • G01V1/28G01V1/30G06T11/00G06T17/05
    • G01V1/362G01V1/28G01V1/282G01V1/286G01V1/30G01V1/32G01V2210/51G01V2210/512G06T11/00
    • 본 발명은 수평적 속도 변화가 존재하는 매질에서 파의 전파를 빠르게 계산할 수 있는 기존의 SGS(Scalar Generalized-Screen) 기법을 탄성 파동방정식(elastic wave equation)으로 확장하는 것에 의해, 지하 매질의 경계면들을 전파하면서 P파와 S파 상호간의 모드 전환을 거치는 탄성파의 거동을 효율적으로 표현할 수 있는 EGS(Elastic Generalized-Screen) 전파자(wave propagator)를 이용한 단방향 파동방정식(one-way wave equation) 중합 전 심도 구조보정(prestack depth migration) 방법에 관한 것으로, 본 발명에 따르면, 전파자의 수직 느리기항(vertical slowness term)의 테일러 급수전개를 2차까지 확장하여 복잡한 구조의 매질에서 보다 높은 정확도의 파동장을 계산할 수 있으며, 모드 분리 연산자를 전파자에 포함시킴으로써 다성분 자료를 P파와 S파로 분리할 필요 없이 음원 모음(shot gather)을 바로 구조보정 입력으로 사용하여 P파 및 S파 영상 단면을 생성할 수 있는 데 더하여, S파 영상화 전에 파수-주파수 영역에서 극성 전환에 대한 보정을 행하여 S파 구조보정 영상의 품질을 향상시킬 수 있도록 구성되는 탄성파 다성분 자료에 대한 중합전 EGS 구조보정 방법이 제공된다.
    • 本发明涉及一种使用能够有效地表现通过P波和S之间的相互模式转换的弹性波的运动的弹性广义屏蔽(EGS)波传播器的单向波方程叠前深度偏移方法 在通过扩展地下介质的边界面的同时,通过将弹性波方程扩展到能够快速计算在具有水平速度变化的介质中的波的传播的常规标量广义屏幕(SGS)技术 并且根据本发明,提供了一种用于地震波多分量数据的叠前EGS迁移方法,其可以在具有复杂结构的介质中通过扩展到泰勒的第二项来计算具有更高精度的波场 传播者的垂直慢度项的系列扩展; 包括传播器中的模式分离算子,以便直接使用射击聚集作为迁移输入,而不需要将多分量数据分离为P波和S波,从而实现P波和S波图像 要生成的部分; 并且被配置为通过在S波成像之前校正波数频域中的极性转换来提高S波迁移图像的质量。
    • 3. 发明申请
    • METHOD FOR SIMULATING LOCAL PRESTACK DEPTH MIGRATED SEISMIC IMAGES
    • 用于模拟局部叠前深度偏移地震图像的方法
    • WO2004090575A1
    • 2004-10-21
    • PCT/NO2004/000103
    • 2004-04-06
    • NORSARLECOMTE, Isabelle
    • LECOMTE, Isabelle
    • G01V1/28
    • G01V1/286G01V1/282G01V2210/512G01V2210/614
    • Method simulating local prestack depth seismic migrated images from target models, without using either real or synthetic recorded data. The input is a background model and some surveys, with the possibility of defining some acquisition surfaces to describe any acquisition geometry of potential surveys. In addition, detailed target models are given, generated from different type of input, such as parameter grids, interpreted time- or depth- horizons with attributes, reservoir models, and other models .In the most efficient application of the invention, a point in the background model is chosen by the user and will act as a node for Green's functions calculation between the surveys/acquisition surfaces and that point. Green's functions can be calculated in many ways (classic ray tracing, Wavefront Construction, and Eikonal solvers are possible methods), the mandatory information being slowness vectors to form a sum vector called the scattering wavenumber. According to some survey choices, the scattering wavenumbers are extracted, with various sub-selections, sorting, re-ordering, and used to create filters in the scattering wavenumber domain. Amplitudes, pulses, scattering pattern, Fresnel-zone effects, and other effects can be included in the filters. The latter are then applied to each target model to give a simulated prestack local image in depth after some transformation, like Fast Fourier Transform, from the wavenumber domain to the space domain. For better accuracy, local images for neighboring Green's functions nodes can be merged to form a classic prestack depth migrated section. A variant of the present invention is to simulate seismic traces in the time domain. The inner core of the invention, with application of scattering wavenumbers to build filters to apply to target models, can be applied in other domains, such as Ground Penetrating Radar, and possibly acoustical and medical imaging.
    • 方法模拟来自目标模型的局部叠前深度地震偏移图像,而不使用真实或合成记录的数据。 输入是背景模型和一些调查,可以定义一些采集表面来描述潜在调查的任何采集几何。 另外,给出了详细的目标模型,其由不同类型的输入产生,诸如参数网格,具有属性的解释时间或深度层,储层模型和其他模型。在本发明的最有效应用中, 背景模型由用户选择,并将作为调查/采集表面和该点之间的格林函数计算的节点。 格林函数可以用许多方法计算(经典光线追踪,波前构建和Eikonal求解器是可能的方法),强制性信息是慢度矢量以形成称为散射波数的和矢量。 根据一些调查选择,散射波数被提取,具有各种子选择,排序,重新排序以及用于在散射波数域中创建滤波器。 幅度,脉冲,散射图案,菲涅耳区效应和其他效应可以包含在滤波器中。 然后将后者应用于每个目标模型,以便在从波数域到空间域的一些变换(例如快速傅里叶变换)之后深入地给出模拟的叠前局部图像。 为了获得更好的精度,可以合并相邻格林函数节点的局部图像,形成经典的叠前深度偏移剖面。 本发明的变型是模拟时域中的地震轨迹。 本发明的内核利用散射波数来构建应用于目标模型的滤波器,可以应用于其他领域,例如地面穿透雷达,以及可能的声学和医学成像。
    • 6. 发明申请
    • METHOD OF PROCESSING SEISMIC DATA ACQUIRED BY MEANS OF MULTICOMPONENT SENSORS
    • 处理由多媒体传感器获取的地震数据的方法
    • WO2005040857A1
    • 2005-05-06
    • PCT/IB2004/003703
    • 2004-10-22
    • COMPAGNIE GENERALE DE GEOPHYSIQUEGRATACOS, Bruno
    • GRATACOS, Bruno
    • G01V1/28
    • G01V1/286
    • The invention relates to a method of processing seismic data acquired by means of a sensor having at least three geophone components, characterized in that estimators are determined which are combinations of these components making it possible to isolate the various data depending on whether they correspond to propagation with reflection or with conversion. The estimators find application in particular for determining a sensor reconstruction according to which the operators to be applied to the various components of the sensor are determined in such a way as to minimize the deviation between reference data and data obtained by applying the estimators to the sensor reconstruction, the operators thus determined being applied to the data acquired.
    • 本发明涉及一种处理通过具有至少三个地震检波器部件的传感器获取的地震数据的方法,其特征在于,确定哪些是这些分量的组合的估计器,使得可以根据它们对应于传播来隔离各种数据 与反思或转换。 估计器特别用于确定传感器重建,根据该重建,应用于传感器的各个部件的操作者以这样的方式确定参考数据与将估计器应用于传感器获得的数据之间的偏差最小化 重建,因此确定的运算符被应用于所获取的数据。
    • 9. 发明申请
    • SEISMIC PROSPECTING METHOD USING CONVERTED WAVE PROCESSING
    • 使用转换波处理的地震前景方法
    • WO01031364A1
    • 2001-05-03
    • PCT/FR2000/002984
    • 2000-10-26
    • G01V1/28
    • G01V1/286
    • The invention concerns a seismic prospecting method which consists in emitting underground a compressional seismic wave and picking up with sensors seismic data having at least a shearing component and in processing the data corresponding to said shearing component to deduce therefrom an information concerning the underground geological structure. The invention is characterised in that the method consists in determining an estimate of the ratio (a), wherein vp and vs are real local speed values of compression and shearing, wherein l represents the underground depth co-ordinate, and wherein z is the value of said depth co-ordinate at the bottom surface of the last layer to be analysed, and by inverting the seismic data so as to deduce the local speed values of compression and shearing for said layer to be analysed, using a modelling process wherein said estimate is used for the first invariant parameter gamma eff.
    • 本发明涉及一种地震勘探方法,其包括在地下发射压缩地震波,并且拾取具有至少剪切分量的传感器地震数据,并处理与所述剪切部件相对应的数据,以从其推导出关于地下地质结构的信息。 本发明的特征在于,该方法包括确定比率(a)的估计,其中vp和vs是压缩和剪切的实际局部速度值,其中l表示地下深度坐标,并且其中z是值 的所述深度坐标在待分析的最后层的底表面上,并且通过反转地震数据,以便使用建模过程来推断所述待分析层的压缩和剪切的局部速度值,其中所述估计 用于第一个不变参数γeff。
    • 10. 发明申请
    • CONVERTED-WAVE PROCESSING IN MANY-LAYERED, ANISOTROPIC MEDIA
    • 多波段介质中的转换波处理
    • WO99054758A1
    • 1999-10-28
    • PCT/US1999/008002
    • 1999-04-13
    • G01V1/28G01V1/36
    • G01V1/286A47B2037/005G01V1/362G01V2210/52
    • The instant invention provides a method for processing converted-wave data into interpretable images using a compact two-parameter model. The method broadly comprises the steps of: collecting both P-wave and converted-wave seismic data; identifying the arrival times of the P-wave and the converted-wave data; computing the vertical velocity ratio from the arrival time data; computing the moveout velocity ratio from the corresponding moveout velocities; computing the effective velocity ratio from the vertical velocity ratio and the moveout velocity ratio; and computing the conversion point from the short-spread P-wave moveout velocity for each reflector, from the effective velocity ratio, the C-wave moveout velocity ratio, and from the arrival time data.
    • 本发明提供了一种使用紧凑的双参数模型将转换波数据处理成可解释图像的方法。 该方法广泛地包括以下步骤:收集P波和转换波地震数据; 识别P波和转换波数据的到达时间; 从到达时间数据计算垂直速度比; 从相应的移动速度计算出移动速度比; 从垂直速度比和移出速度比计算有效速比; 并根据有效速度比,C波移出速度比和到达时间数据,计算出每个反射器的短波P波移动速度的转换点。