盒子波技术在下扬子地区油气勘探中的应用研究  

Study on the Application of Box-Wave Technique for Petroleum Exploration in Lower Yangzi Area

作　　者：倪宁晖[1] 鲍峥[2] 薛曙[2] 白天成 

机构地区：[1]中国石油大学(华东),山东省东营市257061 [2]中国石化江苏油田分公司物探技术研究院,江苏省南京市210046

出　　处：《中国石油勘探》2006年第5期35-40,共6页China Petroleum Exploration

摘　　要：针对江苏下扬子地区中古生界勘探中地震资料信噪比非常低的特点,为此开展中古生界地震勘探盒子波攻关试验。首先对该区干扰波特征进行分析,然后利用盒子波技术分别从切比索夫加权组合、时频谱分析等方面进行信噪比的定量分析和噪声识别,以得到优化的野外组合方法,来压制干扰并确定出合适的野外采集方案。通过新、老资料采集、处理对比分析,盒子波技术综合应用研究取得良好效果,是压制各种干扰的有效手段。In consideration of the low signal to noise ratio of seismic data in the exploration of Mesozoic & Paleozoic region, Lower Yangzi area, brainstorm tests are launched for seismic exploration of Mesozoic & Paleozoic region on the basis of box-wave technique.In the process, the features of interference wave in this area are analyzed first. Then the box-wave technique is applied in the quantitativeanalysis and noise identification of signal to noise ratio from the perspectives of Chebyshev weighted array and time-frequency spectrumanalysis with an aim to optimize geophone arrays to suppress noise and get suitable scheme for field acquisition. Based on comparativeanalysis on the old and new data, box-wave technique is proved to be effective to suppress backscattered seismic noise.

关 键 词：盒子波 检波器组合 切比索夫加权组合 信噪比 

分 类 号：P631.4[天文地球—地质矿产勘探]