莺歌海盆地OBC多分量地震虚反射和鸣震压制及其效果分析
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摘要
利用中国海洋石油总公司在莺歌海盆地采集的海底电缆(OBC)多分量地震数据,分析了虚反射及鸣震产生的物理过程和压制方法的原理,分别利用平均能量法及自相关求取海底反射系数的方法求取合适的叠加系数,将OBC资料中的压力分量和垂直位移分量进行叠加以消除虚反射和鸣震,取得了较好的压制效果,为该地区后续的高精度偏移成像和解释工作奠定了基础。
By using the multicomponent seismic data acquired with ocean bottom cable(OBC)systems by China National Offshore Oil Corporation(CNOOC)in Yinggehai basin,the physical processes to produce ghost reflection and reverberation and the principles to suppress them were analyzed,and the appropriate stacking coefficients were calculated by the average energy algorithm and by the tool to obtain ocean bottom reflectivity through autocorrelation respectively.Then the pressure component in the OBC data was stacked with the vertical displacement component in order to eliminate the ghost and reverberation,resulting in quite good suppression effects.This suppression method may lay a foundation for the subsequent high-precision migration imaging and geological interpretation.
By using the multicomponent seismic data acquired with ocean bottom cable(OBC)systems by China National Offshore Oil Corporation(CNOOC)in Yinggehai basin,the physical processes to produce ghost reflection and reverberation and the principles to suppress them were analyzed,and the appropriate stacking coefficients were calculated by the average energy algorithm and by the tool to obtain ocean bottom reflectivity through autocorrelation respectively.Then the pressure component in the OBC data was stacked with the vertical displacement component in order to eliminate the ghost and reverberation,resulting in quite good suppression effects.This suppression method may lay a foundation for the subsequent high-precision migration imaging and geological interpretation.
引文
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[19]何汉漪,朱宏彰,张树林.海上多波地震在莺歌海盆地的应用[J].中国海上油气(地质),1999,13(5):310-315.
[2]谢玉洪,范彩伟.莺歌海盆地东方区黄流组储层成因新认识[J].中国海上油气,2010,22(6):355-359.
[3]孟晓光.Sirius叠前深度偏移在莺歌海盆地“泥拱模糊带”处理中的应用[J].中国海上油气(地质),1998,12(6):54-59.
[4]陈宝书,李松康,张丽焕.地震资料叠前偏移处理技术应用[J].中国海上油气(地质),2001,15(5):62-65.
[5]骆宗强,叶康礼.莺歌海盆地模糊带地震资料的成像处理技术[J].天然气工业,1999,19(1):64-66.
[6]王守君.海底电缆地震技术优势及在中国近海的应用效果[J].中国海上油气,2012,24(2):9-12.
[7]庄祖垠,陈继宗,王征,等.深水地震资料特性及相关处理技术探析[J].中国海上油气,2011,23(1):26-31.
[8]温书量,朱宏彰,沈丽丽.海上多分量地震资料静校正[J].中国海上油气,2004,16(5):16-19.
[9]傅旦丹,何汉漪,朱宏彰,等.海上多分量地震资料处理技术研究[J].中国海上油气(地质),2003,17(4):37-41.
[10]F J B.双检波器海底电缆技术[J].刘玉班,译.国外油气勘探,1998,10(1):68-75.
[11]陈金海,周国良,徐金祥.虚反射和海水鸣震干扰的消除[J].海洋石油,2000(3):34-42.
[12]宁日亮,张文坡,张淑梅.深海拖缆二维地震资料处理技术[J].石油地球物理勘探,2006,41(5):519-524.
[13]李仁甫,王婧韫,刘克文.伊犁盆地压制地震多次波处理方法试验[J].石油物探,2002,41(1):92-99.
[14]何樵登.地震勘探原理和方法[M].北京:地质出版社,1989:38.
[15]王振华,夏庆龙,田立新,等.消除海底电缆双检地震资料中的鸣震干扰[J].石油地球物理勘探,2008,43(6):626-635.
[16]BERRYHILL J R.Wave-equation datuming[J].Geophysics,1979,44(8):1329-1344.
[17]R W H,SATISH C,SINGH,et al.Receiver response from dual-streamer data and applications in deep reflection seismology[J].Geophysics,1966,61(1):232-243.
[18]许文源,徐伯勋,王怀恩,等.从鸣震记录估计海底反射系数的一种新方法[J].石油物探,1983,22(3):89-99.
[19]何汉漪,朱宏彰,张树林.海上多波地震在莺歌海盆地的应用[J].中国海上油气(地质),1999,13(5):310-315.
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