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    • 1. 发明申请
    • 3-D PRESTACK/POSTSTACK MULTIPLE PREDICTION
    • 3-D PRESTACK / POSTSTACK多重预测
    • WO2004077099A2
    • 2004-09-10
    • PCT/US2004/005816
    • 2004-02-26
    • LANDMARK GRAPHICS CORPORATIONLEVIN, Stewart, A.
    • LEVIN, Stewart, A.
    • G01V
    • G01V1/36G01V2210/52G01V2210/56
    • System and method for analyzing seismic data from a formation. Stacked seismic data are provided, including a plurality of stack traces, e.g., by collecting seismic data from source and receiver locations and stacking the collected seismic data to produce the stacked seismic data. 3-dimensional (3 D) prestack traces are generated from the plurality of stack traces, e.g., by performing inverse moveout of stack traces, e.g., in a specified neighborhood, at common-depth-points, e.g., by inverse normal moveout, ray tracing, spike synthesis, etc. The inverse moveout corrected traces are convolved to compute predicted multiples which are useable in analyzing the formation. The multiples may be adaptively subtracted from the stacked seismic data, or optionally, from prestack data, to generate processed seismic data useable in analyzing the formation, e.g., for petroleum production potential. Dip moveout (DMO) corrected seismic data may be used, where DMO velocities are adjusted by dividing by cosine of the dip angle.
    • 用于分析地层数据的系统和方法。 提供堆叠的地震数据,包括多个堆叠迹线,例如通过从源和接收器位置收集地震数据并堆叠收集的地震数据以产生叠加的地震数据。 例如,通过在公共深度点(例如通过反向正常移动)执行堆栈轨迹的反向移动(例如,在指定的邻域)中,从多个堆叠轨迹生成3维(3D)叠前迹线 跟踪,尖峰合成等。逆向移动校正轨迹被卷积以计算可用于分析地层的预测倍数。 可以从叠加的地震数据或可选地从叠前数据中自适应地减去倍数,以产生可用于分析地层的经处理的地震数据,例如用于石油生产潜力。 可以使用倾斜偏移(DMO)校正的地震数据,其中通过除以倾角的余弦来调整DMO速度。
    • 4. 发明申请
    • 3-D PRESTACK/POSTSTACK MULTIPLE PREDICTION
    • 3D预测/ POSTSTACK多预测
    • WO2004077099A3
    • 2004-12-23
    • PCT/US2004005816
    • 2004-02-26
    • LANDMARK GRAPHICS CORPLEVIN STEWART A
    • LEVIN STEWART A
    • G01V1/36
    • G01V1/36G01V2210/52G01V2210/56
    • System and method for analyzing seismic data from a formation. Stacked seismic data are provided, including a plurality of stack traces, e.g., by collecting seismic data from source and receiver locations and stacking the collected seismic data to produce the stacked seismic data. 3-dimensional (3 D) prestack traces are generated from the plurality of stack traces, e.g., by performing inverse moveout of stack traces, e.g., in a specified neighborhood, at common-depth-points, e.g., by inverse normal moveout, ray tracing, spike synthesis, etc. The inverse moveout corrected traces are convolved to compute predicted multiples which are useable in analyzing the formation. The multiples may be adaptively subtracted from the stacked seismic data, or optionally, from prestack data, to generate processed seismic data useable in analyzing the formation, e.g., for petroleum production potential. Dip moveout (DMO) corrected seismic data may be used, where DMO velocities are adjusted by dividing by cosine of the dip angle.
    • 用于分析地层地震数据的系统和方法。 提供了叠加的地震数据,包括多个叠加轨迹,例如通过收集来自源和接收器位置的地震数据并叠加收集的地震数据以产生叠加的地震数据。 例如通过在公共深度点处(例如通过反向正常时差)射线(例如,在指定的邻域中)执行堆栈轨迹的反向移出,从多个堆栈轨迹中生成三维(3D)叠前轨迹 追踪,尖峰综合等。将反向时差校正迹线卷积以计算可用于分析地层的预测倍数。 可以从叠加的地震数据中自适应地减去倍数,或者可选地从叠前数据中减去倍数,以产生可用于分析地层的经处理的地震数据,例如用于石油生产潜力。 可以使用倾斜时差(DMO)校正的地震数据,其中DMO速度通过除以倾角的余弦来调整。