时频电磁技术的新进展及应用效果

发布时间：2018-01-23 14:32

本文关键词： 时频电磁法采集技术处理技术极化率电阻率　出处：《石油地球物理勘探》2016年S1期 　论文类型：期刊论文

【摘要】：时频电磁探测方法是10年前发展起来的一项油气目标探测和评价技术,其原理是通过发射机发射不过零方波信号,接收机记录频率域和时间域数据,从时间域数据获得电阻率信息,从频率域数据提取极化率信息,再根据电阻率和极化率信息进行油气目标预测,目前的时频电磁法能够发射过零和非过零两种方波信号。通过研究发展了针对这两种信号的预处理方法、定性极化参数提取方法以及地震测井信息约束下的反演技术。为了检验时频电磁法的应用效果,在阿曼PDO时频电磁勘探项目中进行了应用,结果表明,数据质量和处理精度比以往有明显改进,处理结果与已知信息完全吻合。
[Abstract]:Time-frequency electromagnetic detection (TFM) is an oil and gas target detection and evaluation technology developed 10 years ago. The principle of which is to transmit zero square wave signal through transmitter, and the receiver records data in frequency domain and time domain. Resistivity information is obtained from time domain data, polarizability information is extracted from frequency domain data, and oil and gas target prediction is carried out according to resistivity and polarizability information. The current time-frequency electromagnetic method can transmit zero-crossing and non-zero-crossing square wave signals. Qualitative polarization parameter extraction method and inversion technique under the constraint of seismic logging information. In order to test the application effect of time-frequency electromagnetic method, the method has been applied in PDO time-frequency electromagnetic exploration project in Oman. The results show that. The data quality and processing accuracy are obviously improved, and the results are in good agreement with the known information.
【作者单位】：东方地球物理公司综合物化探处;西南石油大学地球科学与技术学院;
【分类号】：P631.325
【正文快照】： 1引言为提高重磁电技术在石油天然勘探中的应用效果,20世纪90年代初东方地球物理公司(原中石油物探局)引进了大功率建场法[1-3],即电性源瞬变电磁测深法(LOTEM)。当时建场法在油气勘探领域的盆地、区域构造、潜山等勘探中发挥了积极的作用。由于建场测深法测量的是垂直磁感应

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