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    • 5. 发明公开
    • METHOD FOR IMAGING OF TARGETED REFLECTORS
    • VERFAHREN ZUR ABBILDUNG VON GEZIELTEN REFLEKTOREN
    • EP2376944A4
    • 2017-02-22
    • EP09836664
    • 2009-12-04
    • EXXONMOBIL UPSTREAM RES CO
    • HOUCK RICHARD TWINBOW GRAHAM A
    • G01V1/30G01V1/28
    • G01V1/282G01V1/301G01V1/308G01V2210/612
    • Techniques are disclosed for performing time-lapse seismic monitor surveys with sparsely sampled monitor data sets. A more accurate 3D representation (e.g., image) of a target area (e.g., a hydrocarbon bearing subsurface reservoir) is constructed using the sparsely sampled monitor data set (11). The sparsely sampled monitor data set may be so limited that it alone is insufficient to generate an accurate 3D representation of the target area, but accuracy is achieved through use of certain external information (14). The external information may include information accurately identifying a shape of the seismic reflector(s) present in the target area. The shape may be predetermined from a fully sampled base survey, and used to enable an accurate 3D representation (12) of the target area to be later generated for a monitor survey using a sparsely sampled monitor data set.
    • 公开了用于执行具有稀疏采样监视数据集的延时地震监测器测量的技术。 使用稀疏采样的监视数据集(11)构建目标区域(例如,含烃地下储层)的更准确的3D表示(例如,图像)。 稀疏采样的监视器数据集可以被限制,使得它不足以产生目标区域的精确3D表示,但是通过使用某些外部信息来实现精确度(14)。 外部信息可以包括准确地识别存在于目标区域中的地震反射器的形状的信息。 该形状可以从完全采样的基础测量中预先确定,并且用于使得能够使用稀疏采样的监视数据集来对目标区域的精确3D表示(12)进行监视测量。
    • 8. 发明公开
    • METHOD OF CONSTRAINING SEISMIC INVERSION
    • VERFAHREN ZURBESCHRÄNKUNGVON地震仪反演
    • EP3004948A2
    • 2016-04-13
    • EP14726352.9
    • 2014-05-23
    • Total S.A.
    • BLANCHARD, Thomas DavidTHORE, Pierre Daniel
    • G01V99/00G01V1/30
    • G01V99/005G01V1/306G01V1/308G01V2210/6122G01V2210/614G01V2210/6169G01V2210/6242G06F17/18
    • Disclosed is a method a seismic inversion for petrophysical properties of a subsurface volume comprising the steps of: obtaining petrophysical data relating to valid geological and/or dynamical scenarios, converting this data into valid combinations of elastic parameters; projecting the valid combinations of elastic parameters onto a spherical plot; and determining a penalty term from the distances between each cell of the spherical plot and the nearest valid combination of elastic parameters within the subsurface volume. Valid geological and/or dynamical scenarios comprise those which are petrophysically possible. The penalty term is then used to constrain an inversion minimising a cost function associated with seismic mismatch between two or more seismic surveys.
    • 公开了一种用于地下体积的岩石物理性质的地震反演方法,包括以下步骤:获得与有效地质和/或动力场景相关的岩石物理数据,将该数据转换成弹性参数的有效组合; 将弹性参数的有效组合投射到球形图上; 并且从球面图的每个单元格之间的距离和地下体积内的最接近的弹性参数的有效组合之间确定罚分项。 有效的地质和/或动力场景包括具有岩石物理可能性的场景。 然后,惩罚项用于约束使两次或更多次地震勘测之间的地震失配相关联的成本函数最小化的反演。