摘要
在岩性地层勘探中,地震资料的分辨率常常制约着岩性圈闭的识别能力。而高分辨率地震资料处理涉及多个环节,其中反褶积是高分辨率地震资料处理的关键技术。在地表一致性反褶积的基础上,采用子波整形反褶积将最小相位子波变换为零相位子波,在一定信噪比的基础上适当地拓宽地震资料的频带,提升高频端的能量,提高了地震资料的分辨率。
In exploration of lithologic-stratigraphic reservoirs, the resolution of seismic data often restricts their identification. High-resolution seismic processing involves severallinks including the key technique-deconvolution. In this study, based on surface consistent deconvolution, wavelet shaping deconvolution is adopted to convert the minimum-phase wavelet into zero-phase wavelet. According to a certain signal-to-noise ratio (SNR), frequency band is widened appropriately to increase the energy of high frequency end and the resolution of seismic data. Those lay the foundation for identification of lithologic-stratigraphic traps.
引文
[1]李庆忠.走向精确勘探的道路:高分辨率地震勘探系统工程剖析[M].北京:石油工业出版社,1993:196.
[2]俞寿朋.高分辨率地震勘探[M].北京:石油工业出版社,1994:189.
[3]渥.伊尔马兹.地震数据处理[M].黄绪德,袁明德,译.北京:石油工业出版社,1994:300.
[4]李庆忠.地震高分辨率勘探中的误区与对策[J].石油地球物理勘探,1997,32(4):751-783.
[5]王进海,朱敏.高分辨率资料处理与高信噪比资料[J].石油地球物理勘探,1996,31(4):587-596.
[6]贾丽华,吴长江,罗焱鑫,等.地震资料高分辨率处理技术[J].石油物探,2002,41(4):484-488.