海洋可控源电磁勘探中双对称发射波形的优化
发布时间：2018-11-06 19:29
【摘要】：海洋可控源电磁勘探(Marine Controlled-Source Electromagnetic,MCSEM)是一门新兴的海洋油气勘探技术.在MCSEM测量中最常采用的发射信号就是方波信号,但方波信号各谐波成分的能量随着奇次谐波次数n的增加严重衰减,这可能使得很多谐波成分在有效传输距离内检测不到.为了有效提高MCSEM信号的信噪比,学者D.Myer对发射波形进行了优化,提出了一种双对称波形.但D.Myer针对双对称波形只是进行了初步的理论分析并没有进行实验验证,本文对双对称波形的实现提出了合理的实验方案,并从中选取了最优波形.
[Abstract]:Ocean controllable source electromagnetic exploration (Marine Controlled-Source Electromagnetic,MCSEM) is a new offshore oil and gas exploration technology. The most commonly used transmission signal in MCSEM measurement is square wave signal. However, the energy of harmonic components of square wave signal attenuates seriously with the increase of odd harmonic number n, which may make many harmonic components undetectable within effective transmission distance. In order to improve the signal-to-noise ratio (SNR) of MCSEM signal effectively, the transmitted waveform is optimized by D.Myer, and a double symmetric waveform is proposed. But D.Myer has only carried on the preliminary theoretical analysis to the double symmetry waveform and has not carried on the experimental verification, this article proposed the reasonable experiment plan to the realization of the double symmetry waveform, and selected the best waveform from it.
【作者单位】： 中国石油大学(华东)信息与控制工程学院;浙江省绍兴市上虞区产品质量监督检验所;
【基金】：中国石油集团东方地球物理勘探有限责任公司委托项目“海洋可控源电磁勘探中MT噪声的降噪方法研究”资助
【分类号】：P631.325;P744.4
[Abstract]:Ocean controllable source electromagnetic exploration (Marine Controlled-Source Electromagnetic,MCSEM) is a new offshore oil and gas exploration technology. The most commonly used transmission signal in MCSEM measurement is square wave signal. However, the energy of harmonic components of square wave signal attenuates seriously with the increase of odd harmonic number n, which may make many harmonic components undetectable within effective transmission distance. In order to improve the signal-to-noise ratio (SNR) of MCSEM signal effectively, the transmitted waveform is optimized by D.Myer, and a double symmetric waveform is proposed. But D.Myer has only carried on the preliminary theoretical analysis to the double symmetry waveform and has not carried on the experimental verification, this article proposed the reasonable experiment plan to the realization of the double symmetry waveform, and selected the best waveform from it.
【作者单位】： 中国石油大学(华东)信息与控制工程学院;浙江省绍兴市上虞区产品质量监督检验所;
【基金】：中国石油集团东方地球物理勘探有限责任公司委托项目“海洋可控源电磁勘探中MT噪声的降噪方法研究”资助
【分类号】：P631.325;P744.4
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