公开(公告)号：EP0864882A2

公开(公告)日：1998-09-16

申请号：EP98200712.2

申请日：1998-03-06

申请人： Jason Geosystems B.V.

发明人： Debeye, Hendrik Willem Johan ,  Sabbah, Eyad ,  Van der Made, Pieter Maarten

IPC分类号： G01V1/28

CPC分类号： G01V1/301 ,  G01V1/282 ,  G01V11/00 ,  G01V2210/614

摘要： The present invention provides for a method for estimating or simulating one or more parameters of a stratum structure, comprising the steps of:

determining a first model of the stratum structure;
determining one or more variograms of one or more parameters in one or more of the strata;
measuring the value of a parameter in a number of points;
estimating on the basis of a variogram a probability density function (PDF) of the parameter at locations in the strata close to or at some distance from the locations where the parameter has been measured; and
determining by using seismic data an acceptable value of the parameter at the location where the probability density function of the parameter has been determined using a variogram.

摘要翻译： 本发明提供了一种用于估计或模拟层结构的一个或多个参数的方法，包括以下步骤：确定层结构的第一模型; 确定一个或多个所述层中的一个或多个参数的一个或多个变异函数; 在多个点测量参数的值; 基于变差函数估计在距离参数测量的位置接近或距离某一距离的地层中的参数的概率密度函数（PDF）; 并且使用地震数据确定已经使用变差函数确定参数的概率密度函数的位置处的参数的可接受值。

公开(公告)号：EP0796443A1

公开(公告)日：1997-09-24

申请号：EP96931108.0

申请日：1996-09-11

申请人： ELF AQUITAINE PRODUCTION

发明人： KESKES, Naamen ,  RABILLER, Philippe ,  YE, Shinju

IPC分类号： G01V1 ,  E21B41

CPC分类号： G01V1/34 ,  E21B2041/0028 ,  G01V1/301 ,  G01V1/38

摘要： Method for obtaining a representation of the textures of a geological structure, characterised in that images characteristic of the sedimentology of said environment are formed, parameters corresponding to the nature of said images are estimated at every point of each image and in a spatial domain around said point, so as to determine a texture vector for each of said points and to obtain a set of texture vectors; texture vectors representative of the characteristic textures of said geological environment are selected in said set of texture vectors; a neural network formed of cells distributed in two dimensions, and which contains as many cells as characteristic textures, is used, and the selected texture vectors are used to submit said neural network to a learning process so that a final topology map of the textures characteristic of said geological environment is obtained.

公开(公告)号：EP0796442A1

公开(公告)日：1997-09-24

申请号：EP96936094.0

申请日：1996-09-30

申请人： AMOCO CORPORATION

发明人： MARFURT, Kurt, J. ,  KIRLIN, R., Lynn ,  FARMER, Steven, L. ,  BAHORICH, Michael, S.

IPC分类号： G01V1

CPC分类号： G01V1/288 ,  G01V1/301

摘要： A method, a map and an article of manufacture for the exploration of hydrocarbons. In one embodiment of the invention, the method comprises the steps of: accessing 3D seismic data; dividing the data into an array of relativey small three-dimensional cells; determining in each cell the semblance/similarity, the dip and dip azimuth of the seismic traces contained therein; and displaying dip, dip azimuth and the semblance/similarity of each cell in the form of a two-dimensional map. In one embodiment, semblance/similarity is a function of time, the number of seismic traces within the cell, and the apparent dip and apparent dip azimuth of the traces within the cell; the semblance/similarity of a cell is determined by making a plurality of measurements of the semblance/similarity of the traces within the cell and selecting the largest of the measurements. In addition, the apparent dip and apparent dip azimuth, corresponding to the largest measurement of semblance/similarity in the cell, are deemed to be estimates of the true dip and true dip azimuth of the traces therein. A color map, characterized by hue, saturation and lightness, is used to depict semblance/similarity, true dip azimuth and true dip of each cell; true dip azimuth is mapped onto the hue scale, true dip is mapped onto the saturation scale, and the largest measurement of semblance/similarity is mapped onto the lightness scale of the color map.

公开(公告)号：EP0548341B1

公开(公告)日：1995-10-25

申请号：EP92915759.2

申请日：1992-07-06

申请人： LANDMARK GRAPHICS CORPORATION

发明人： HILDEBRAND, Harold, A. ,  ALAM, Aftab ,  CARAGOUNIS, Peter

IPC分类号： G01V1/30

CPC分类号： G01V1/301

摘要： A method and apparatus of rapidly generating horizon maps (110) from a three dimensional volume of seismic traces is disclosed. During batch processing of the digital data representing trace wavelets, '1''s or '0''s are determined for each seismic trace of the volume. A bit volume (102) is produced of which a '1' at a depth of a trace indicates that a horizon exists at that depth and at other depths of '1''s of adjacent traces which are within a predetermined depth. In a real time mode, an explorationist selects a seed point thereby identifying a '1' on a particular trace at a particular depth. An automatic scanning procedure finds all other '1''s at depths of adjacent traces. Each found '1' of adjacent traces is redesignated a seed point and the process is continued until no more '1''s can be found. A horizon map (110) is created from the depths of each found '1'. An alternative method and apparatus is disclosed by which such bit volume is replaced with a compressed trace volume where each bit of the bit volume is replaced with a numerical value corresponding to the precise depth location of the attribute extremum represented by the bit. Such depth values are stored consecutively to form compressed traces. Interpolation of wavelets to find maximum or minimum attributes of such wavelets identifies depths above or below a bit of the bit volume which allows the production of an interpolated compressed trace volume.

公开(公告)号：EP0513448A1

公开(公告)日：1992-11-19

申请号：EP91304335.2

申请日：1991-05-15

申请人： CHEVRON RESEARCH AND TECHNOLOGY COMPANY

发明人： Hale, Ira David

IPC分类号： G01V1/28

CPC分类号： G01V1/28 ,  G01V1/301 ,  G01V2210/51

摘要： A method for migrating seismic data for formations that are located in geological media that cause seismic waves to be refracted so substantially that the waves turn upward, which includes the steps of tabulating a first phase shift function as a function of wave vector and the angular frequency of seismic waves in the geological media, tabulating a second phase shift function, storing the tabulated values of the first and second phase shift functions, calculating a third phase shift function based upon the first and second phase shift functions; and migrating recorded seismic data using the first, second and third functions.

摘要翻译： 一种用于迁移位于地质介质中的地层的地震数据的方法，其导致地震波被折射，从而使得波浪向上转动，其中包括列出作为波矢和角频率的函数的第一相移函数的步骤 地震介质中的地震波，列出第二相移函数，存储第一和第二相移函数的列表值，基于第一和第二相移函数计算第三相移函数; 并使用第一，第二和第三功能迁移记录的地震数据。

公开(公告)号：EP0442719A3

公开(公告)日：1992-03-18

申请号：EP91301159.9

申请日：1991-02-13

申请人： CONOCO INC.

发明人： Hanson, Douglas W. ,  Parsons, Roger K.

IPC分类号： G01V1/30

CPC分类号： G01V1/301

摘要： A method for determining accurately the migration velocities for use in seismic migration processing of seismic data. The method presorts the seismic data into common-offset sections (14). The common-offset data is then migrated repeatedly with a selected range of velocities (16-22). The migrated data for each velocity is further sorted into a common-image point profile (24). The correct velocity per depth may then be determined by either determining the least time moveout for the common-image point at each depth (26), or computing the semblance for each common-image point and each test velocity and selecting the largest semblance value.

摘要翻译： 准确地确定地震数据地震偏移处理中使用的迁移速度的方法。 该方法将地震数据预设为共偏移部分（14）。 然后，以选定的速度范围（16-22）重复迁移公差补偿数据。 每个速度的迁移数据被进一步分类到公共图像点轮廓（24）中。 然后可以通过确定在每个深度（26）处的公共图像点的最小时间偏移来计算每个深度的正确速度，或者计算每个公共图像点和每个测试速度的相似度并选择最大相似值。

公开(公告)号：EP0181216A3

公开(公告)日：1987-04-01

申请号：EP85308104

申请日：1985-11-07

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： Flinchbaugh, Bruce E.

IPC分类号： G01V01/30

CPC分类号： G01V1/301

摘要： An electronic system automatically produces representations of three-dimensional recommended horizons (50a-50e) from processed seismic data (40), Significant events, in the form of turnings, are identified in all of the digitized traces that make up the processed seismic data. Pairs of significant events in adjacent traces are determined. The system determines these pairs through a mutual nearest neighbor technique, together with a technique for detecting similar signs. The system measures the curvature of the path formed by the paired turnings in successive digital traces and terminates the path at any point where the curvature exceeds a predetermined limit. The system then looks for three-dimensional continuity by looking for a closed loop of at least four turnings making up four pairs of turnings. These techniques yield at least one horizon represented in a first format. The recommended horizon (50a-50e), represented in a second format, is essentially extracted by the system through a recursive "walking" procedure for identifying all of the turnings in the recommended horizon and designating those turnings in the second format. At the same time, vertical uniqueness of each of the turnings in the recommended horizon is examined and if a subsequent turning is found to be on the same digital trace as a prior detected turning, the subsequent turning is not permitted. The second format is used for storage of the horizon and subsequent display.