检波器—大地耦合响应的野外规模测量与衰减方法

发布时间：2018-01-26 06:19

本文关键词： 检波器—大地耦合响应测耦检波器振动力学解耦反褶积　出处：《石油地球物理勘探》2017年03期 　论文类型：期刊论文

【摘要】：检波器—大地耦合响应是地震检波系统中非常重要的环节。如果不考虑自身滤波响应,检波器接收到的信号仅是"检波器外壳的振动",并不是"地表的振动"。而勘探的目的则希望接收到后者,二者之间的差异就是"检波器—大地耦合响应"。受技术条件的限制,尽管人们确知二者之间存在差异,也在实验室或者野外小规模地进行了一些试验性测试,但是野外大规模的"检波器—大地耦合响应测量"一直没有实现。在论证了测试方法的理论合理性后,发展了一项专利技术——"测耦检波器",实现了检波器—大地耦合响应的大规模、高效率野外测量及相应耦合参数的记录。同时,根据野外记录的响应参数,通过室内计算(解耦反褶积),可以有效衰减甚至消除耦合响应对地震数据的影响,提高高频信号的道间一致性,为提高地震数据的信噪比、分辨率,特别是高频微弱反射信号的识别能力提供保真度更高的基础数据。
[Abstract]:Geophone-earth coupling response is a very important link in seismic detection system. If the filter response is not considered, the signal received by geophone is only the vibration of geophone shell. The purpose of exploration is to receive the latter. The difference between the two is "geophone-earth coupling response", which is limited by technical conditions. Although there are known differences between the two, a number of experimental tests have also been carried out in the laboratory or on a small scale in the field. But the field large-scale "geophone-geodetic coupling response measurement" has not been realized. After proving the theoretical rationality of the test method, a patent technology, the "coupled geophone", has been developed. The large scale and high efficiency field measurement of geophone-earth coupling response and the recording of corresponding coupling parameters are realized. At the same time, according to the response parameters of field record, the indoor calculation (decoupling deconvolution) is carried out. It can effectively attenuate and even eliminate the influence of coupling response on seismic data, improve the consistency of high-frequency signals between tracks, and improve the signal-to-noise ratio and resolution of seismic data. In particular, the recognition ability of high frequency weak reflection signals provides higher fidelity basic data.
【作者单位】：中石化石油工程地球物理公司胜利分公司;
【分类号】：P631.436
【正文快照】： 魏继东.检波器—大地耦合响应的野外规模测量与衰减方法.石油地球物理勘探,2017,52(3):411-417.1引言耦合在物理学上指两个或两个以上的体系或两种运动形式之间通过各种相互作用而彼此影响、相互联合的现象。在石油地震勘探中,震源激发后,地震波传播到地下反射界面再反射回地

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