| 力信号反褶积方法在可控震源单炮资料提取中的应用 |
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| 引用本文： | 马涛,王彦春,柳兴刚,倪宇东,李红远,王博士,白杰.力信号反褶积方法在可控震源单炮资料提取中的应用[J].地球物理学进展,2020(4):1438-1444. |
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| 作者姓名： | 马涛 王彦春 柳兴刚 倪宇东 李红远 王博士 白杰 |
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| 作者单位： | 中国地质大学（北京）地球物理与信息技术学院;中国石油东方地球物理公司采集技术中心 |
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| 基金项目： | 国家重点研发计划深地专项项目(2016YFC0601100)资助。 |
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| 摘 要： | 随着油气勘探难度的加大,对资料保真度方面提出了更高的要求.针对可控震源资料提高保真度的问题,实现了可控震源力信号反褶积方法提取可控震源单炮记录.根据理论褶积模型,对比了可控震源参考信号互相关方法和力信号反褶积方法的优劣.得到以下结论:力信号反褶积资料子波能量更集中,无谐波干扰,子波相位更接近地下反射系数序列,是保真度更高的资料.在实际资料的对比中,力信号反褶积相比常规参考信号互相关数据,初至清晰,相位准确,波形保真度及剖面深层能量反射清晰度方面都有提升.该方法克服了参考信号互相关的固有缺陷,对于提高可控震源资料品质,特别是提高资料保真度起到了积极的作用,有较好的规模化应用前景.
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| 关 键 词： | 可控震源 地震勘探 力信号 反褶积 保真度 |
Application of deconvolution method with ground force in vibroseis raw shots calculation |
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| MA Tao,WANG Yan-chun,LIU Xing-gang,NI Yu-dong,LI Hong-yuan,WANG Bo-shi,BAI Jie.Application of deconvolution method with ground force in vibroseis raw shots calculation[J].Progress in Geophysics,2020(4):1438-1444. |
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| Authors: | MA Tao WANG Yan-chun LIU Xing-gang NI Yu-dong LI Hong-yuan WANG Bo-shi BAI Jie |
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| Institution: | (School of Geophysics and Information Technology,China University of Geoscience,Beijing 100083,China;Acquisition Technique Center,BGP Inc.,CNPC,Zhuozhou 072751,China) |
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| Abstract: | With the increasing difficulty of oil and gas exploration,higher requirements are put forward for vibroseis acquisition technology,especially the fidelity requirement.This paper analyzes and summarizes the efforts made by predecessors in improving the fidelity of vibroseis.After theoretically study and comparison the method of ground force deconvolution and pilot cross-correlation to calculate the vibrator raw shots,such conclusion is made:the deconvolution data has better waveform,better energy concentration,no harmonic distortion,better phase accuracy,and better fidelity and resolution.In the comparison of raw shot data,the data quality of ground force deconvolution is improved to a certain extent compared with the conventional pilot cross-correlation data.It has better first arrival clarity,better phase accuracy.And in the section comparison,it improves the data quality in phase accuracy and deeper layer imaging.The ground force deconvolution method solved several intrinsic problems of cross-correlation,and it plays a positive role in improving the data quality especially the fidelity of viborseis data.This method will be promising. |
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| Keywords: | Vibrator Seismic exploration Ground force Deconvolution Fidelity |
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