| 塔里木盆地巴楚隆起低信噪比地震资料处理方法研究 |
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| 引用本文： | 汪功怀,赵铁枫,张中灵.塔里木盆地巴楚隆起低信噪比地震资料处理方法研究[J].中国地质,2011,38(4):1048-1060. |
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| 作者姓名： | 汪功怀 赵铁枫 张中灵 |
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| 作者单位： | 中国石油化工股份有限公司中原油田分公司物探研究院,河南濮阳,457001 |
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| 基金项目： | 中石化科技部项目(P07030)资助 |
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| 摘 要： | 塔里木盆地巴楚隆起勘探程度较低,是开展油气勘探的主要潜力区之一。受近地表激发条件差、低降速带结构变化大、目的层埋藏较深等地表和深层地质条件的影响,研究区地震资料信噪比低、品质较差,严重地制约了地震资料解决地质问题的能力。本文在分析研究区新采集的原始地震资料基础上,建立了精确的近地表模型,采用层析静校正、交互迭代静校正方法求准静校正量;利用多域多阶段联合去除噪声,采取近道内切除等多种方法串联综合应用消除多次波干扰;采用全面统计、逐点处理的地表一致性处理技术进行振幅能量补偿;精细速度分析,优选提高深层弱信号成像质量的偏移方法等一系列的关键技术,使本区低信噪比资料的信噪比、同相轴连续性和构造成像质量得到了较大的改善和提高,取得了较好的应用效果。
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| 关 键 词： | 信噪比 静校正 干扰波 地震速度 多次波 偏移成像 |
The method for low signal-noise ratio seismic data processing in Bachu uplift, Tarim Basin |
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| WANG Gong-huai,ZHAO Tie-feng,ZHANG Zhong-ling.The method for low signal-noise ratio seismic data processing in Bachu uplift, Tarim Basin[J].Chinese Geology,2011,38(4):1048-1060. |
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| Authors: | WANG Gong-huai ZHAO Tie-feng ZHANG Zhong-ling |
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| Institution: | WANG Gong-huai,ZHAO Tie-feng,ZHANG Zhong-ling(Geophysical Research Institute,Zhongyuan Oilfield Company,Sinopec,Puyang 457001,Henan,China) |
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| Abstract: | The prospecting extent in the whole Bachu uplift of Tarim Basin is relatively low,which however is a potential area for oil and gas exploration.The poor near-surface shooting conditions,deeply buried target areas and deep geological conditions result in the serious seismic data static correction problem,highly-developed interference wave,difficulties in correct recognition of multiple wave,improvement of the energy of deep reflection wave and accurate obtaining of the velocity and migration imaging.Low S/N ... |
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| Keywords: | S/N ratio static correction interference wave seismic velocity multiple wave migration imaging |
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