利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

7 条记录 (耗时 0.011 秒)

    Shot Point Dithering Techniques for Marine Seismic Surveys
    2.
    发明申请
    Shot Point Dithering Techniques for Marine Seismic Surveys 有权

    公开(公告)号：US20210349228A1

    公开(公告)日：2021-11-11

    申请号：US17254132

    申请日：2019-06-21

    申请人： PGS Geophysical AS

    发明人： Christian Strand ,  Edwin Hodges

    IPC分类号： G01V1/38

    摘要： Techniques are disclosed relating to performing marine surveys according to dither values generated based on one or more dithering constraints. This may include for example, determining a set of nominal shot points for a marine seismic energy source and determining dither values for ones of the nominal shot points. In some embodiments, the dither values are randomly generated, subject to a duplication constraint such that at most a threshold number of dither differences between consecutive shot points that fall within discrete ranges. In some embodiments, actual shot points are determined for the planned sail line based on application of the determined dither values to the nominal shot points. In various embodiments, the disclosed techniques may facilitate a separate de-blending procedure to separate signals from the marine seismic energy source and signals from one or more other seismic energy sources to be used for the seismic survey.

    Surveying Techniques using Multiple Different Types of Sources
    4.
    发明申请
    Surveying Techniques using Multiple Different Types of Sources 审中-公开

    公开(公告)号：US20190187314A1

    公开(公告)日：2019-06-20

    申请号：US16213214

    申请日：2018-12-07

    申请人： PGS Geophysical AS

    发明人： Edwin Hodges ,  Manuel Beitz

    IPC分类号： G01V1/38

    CPC分类号： G01V1/3808 ,  G01V2210/121 ,  G01V2210/127

    摘要： Techniques are disclosed relating to acquisition and imaging for marine surveys. In some embodiments, a transition survey that uses both one or more sources of a first type (e.g., impulsive sources) and one or more sources of a second type (e.g., vibratory sources) may facilitate calibration of prior surveys that use the first type of sources with subsequent surveys that use the second type of source. In some embodiments, the different types of sources may be operated simultaneously at approximately the same location. In some embodiments, signals generated by the sources are separated, e.g., using deconvolution. The signals may then be compared to generate difference information, which in turn may be used to adjust sensor measurements from a previous or subsequent survey. In various embodiments, the disclosed techniques may improve accuracy in images of geological formations and may facilitate transitions to new types of seismic sources while maintaining continuity in 4D surveys.

    Surveying techniques using multiple different types of sources
    6.
    发明授权
    Surveying techniques using multiple different types of sources 有权

    公开(公告)号：US11899151B2

    公开(公告)日：2024-02-13

    申请号：US16213214

    申请日：2018-12-07

    申请人： PGS Geophysical AS

    发明人： Edwin Hodges ,  Manuel Beitz

    IPC分类号： G01V1/38

    CPC分类号： G01V1/3808 ,  G01V2210/121 ,  G01V2210/127 ,  G01V2210/1212 ,  G01V2210/1214 ,  G01V2210/61 ,  G01V2210/612

    摘要： Techniques are disclosed relating to acquisition and imaging for marine surveys. In some embodiments, a transition survey that uses both one or more sources of a first type (e.g., impulsive sources) and one or more sources of a second type (e.g., vibratory sources) may facilitate calibration of prior surveys that use the first type of sources with subsequent surveys that use the second type of source. In some embodiments, the different types of sources may be operated simultaneously at approximately the same location. In some embodiments, signals generated by the sources are separated, e.g., using deconvolution. The signals may then be compared to generate difference information, which in turn may be used to adjust sensor measurements from a previous or subsequent survey. In various embodiments, the disclosed techniques may improve accuracy in images of geological formations and may facilitate transitions to new types of seismic sources while maintaining continuity in 4D surveys.