| 近地表疏松介质吸收补偿的数学模拟研究 |
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| 引用本文： | 杜增利,施泽进,徐峰,诸玉环,王建宁.近地表疏松介质吸收补偿的数学模拟研究[J].西南石油学院学报,2007,29(1):44-46,50. |
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| 作者姓名： | 杜增利 施泽进 徐峰 诸玉环 王建宁 |
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| 作者单位： | [1]成都理工大学,四川成都610059 [2]“油气藏地质及开发工程”国家重点实验室·成都理工大学,四川成都610059 [3]西南石油大学,四川成都610059 [4]塔里木油田分公司,四川成都610059 |
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| 基金项目： | 中国石油天然气集团公司资助项目 |
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| 摘 要： | 为有效提高地震资料的分辨率,定量研究地震波在疏松介质中的吸收效应及补偿条件尤为重要.根据塔里木盆地针对性施工的微测井原始资料,采用频谱比法计算表层品质因子的分布规律;应用地震波在粘弹性介质中的传播机制,符合线性吸收机制原理,采用相移法在频率-空间域对地震波在疏松介质中的传播,进行正演及吸收衰减补偿的数学模拟.结果表明:疏松介质对地震波的高频吸收衰减,只有在特定的表层地震地质条件下,才能通过后续补偿处理得以恢复,给出了完全补偿这种吸收衰减效应的条件,为沙漠地区地震资料分辨率的合理上限提供了理论模拟数据.
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| 关 键 词： | 地震波 吸收 频散 补偿 数学模拟 |
| 文章编号： | 1000-2634（2007）01-0044-46 |
| 修稿时间： | 2006-09-12 |
THE MATHEMATICAL MODELING OF ABSORPTION COMPENSATION IN LOOSE MEDIUM at subsurface |
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| DL Zeng-li.THE MATHEMATICAL MODELING OF ABSORPTION COMPENSATION IN LOOSE MEDIUM at subsurface[J].Journal of Southwest Petroleum Institute,2007,29(1):44-46,50. |
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| Authors: | DL Zeng-li |
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| Abstract: | In order to improve the resolution of seismic data efficiently, it is important to study the absorption and the compensation of seismic wave in Joose medium quantitatively. The distribution law of quality factor is calculated with the spectrum ratio method according to the raw well logging data collected in Tarim basin. The mathematical modeling of seismic energy absorption attenuation compensation in loose medium is studied by the phase shift technique in f -x domain based on the propagation mechanics of seismic wave in elastic-viscid medium. The result shows that the absorption attenuation of energy of high frequency can only be recovered by the data processing in some given condition of surface seismic geology , the conditions of completely compensating the absorption attenuation effect is given, and theoretic numerical data is provided to the reasonable upper limit of seismic data resolution in desert area. |
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| Keywords: | seismic wave absorption dispersion compensation mathematical modeling |
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