公开(公告)号：US09075161B2

公开(公告)日：2015-07-07

申请号：US13718159

申请日：2012-12-18

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Jun Cao ,  Joel D. Brewer ,  Xianhuai Zhu

IPC: G01V1/34 ,  G01V1/30

CPC classification number: G01V1/345 ,  G01V1/301 ,  G01V1/303 ,  G01V2200/14

Abstract: The illumination/imaging of a theorized target horizon that is below a theorized velocity contrast horizon where the velocity contrast horizon may represent the bottom of a salt dome by assessing the path of seismic energy for critical angle reflection/refraction and tabulates the successful paths and unsuccessful paths. For some subsurface locations, seismic energy will not reach the surface above the velocity contrast due to the shapes of the velocity contrast horizon and target horizon and the velocity model through which the studied waves propagate. Displays may be prepared and used for understanding illumination/imaging of the geology for drilling, reacquisition, and reprocessing to elicit information about subsurface geology that may have been overlooked or ignored. Future surveys avoid expensive surveying which cannot obtain useful seismic data as determined by the velocity contrast for the target locations due to the shapes of the horizons and the velocity model.

Abstract translation: 理论上的目标地平线的照明/成像低于理论速度对比度水平线，其中速度对比度边界可以通过评估临界角反射/折射的地震能量的路径来表示盐穹顶的底部，并列出成功的路径和不成功 路径。 对于一些地下位置，由于速度对比度水平和目标水平的形状以及研究的波传播的速度模型，地震能量将不会到达速度对比度以上的表面。 显示器可以准备并用于理解用于钻井，再采集和再处理的地质学的照明/成像，以引出可能被忽视或忽略的地下地质信息。 未来的调查避免了昂贵的测量，由于地平线和速度模型的形状，无法获得由目标位置的速度对比度确定的有用的地震数据。