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    • 5. 再颁专利
    • Nonlinear electroseismic exploration
    • 非线性电地震勘探
    • USRE41829E1
    • 2010-10-19
    • US10912769
    • 2004-08-05
    • Scott C. HornbostelArthur H. ThompsonThomas C. HalseyRobert A. RaschkeClint A. Davis
    • Scott C. HornbostelArthur H. ThompsonThomas C. HalseyRobert A. RaschkeClint A. Davis
    • G01V1/00G01V11/00
    • G01V11/007G01V1/003G01V1/02G01V3/082Y02A90/342
    • A method for seismic exploration using nonlinear conversions between electromagnetic and seismic energy, with particular attention to the electromagnetic source waveform used. According to the invention, seismic returns from a source waveform are correlated with a reference waveform, with both waveforms custom designed to minimize both correlation side lobes and interference from linear electroseismic effects. A waveform element is selected which may be sequenced by a binary or similar digital code embodying the desired custom design to generate an input sweep with the needed depth penetration and noise suppression. Correlation of the seismic response with the reference waveform in a data processing step mathematically aggregates the seismic response from the input sweep into a single wavelet. Preferred binary digital codes include prescribed variations of maximal length shift-register sequences. Also, an apparatus for generating the desired waveforms.
    • 一种使用电磁和地震能量之间的非线性转换的地震勘探方法,特别注意所用的电磁源波形。 根据本发明,来自源波形的地震返回与参考波形相关联,两个波形定制设计以最小化相关旁瓣和来自线性电震效应的干扰。 选择波形元件,其可以通过体现所需定制设计的二进制或类似数字代码进行排序,以产生具有所需深度穿透和噪声抑制的输入扫描。 在数据处理步骤中,地震响应与参考波形的相关性将从输入扫描的地震响应数学地聚集成单个小波。 优选的二进制数字码包括最大长度移位寄存器序列的规定变化。 而且,一种用于产生所需波形的装置。