含压实效应的沙丘曲线静校正方法及其应用
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摘要
沙漠地区表层结构较为复杂,静校正问题是难点.利用炮点井深、替换速度、潜水面和地表高程等资料,给出了固定基准面位于地表以上的沙丘曲线静校正量和最小二乘法压实系数的具体计算公式,并与野外测量的静校正量进行对比,从实际资料的单炮和叠加结果可以看出,该方法能够有效解决沙漠地区的长波长静校正问题,且其应用效果要优于野外测量的静校正量,从而能够提高沙漠地区静校正量的计算效率和地震资料的处理精度.
The desert surface’s structure is complex, and the difficulty is the static problem. With information of shot point well depth, replacement velocity, ground water plane and surface elevation, and so on, the paper proposes a sand dune curve static computational equation with fixed datum above the surface and compaction coefficient computational equation by the least square method, and carries out comparison with the field measuring statics, it sees from single shot and stack section that the proposed method can effectively solve the long wavelength statics in the desert area, and its application result is better than with the field measuring statics, thus it can improve the static’s computational efficiency and the seismic data processing accuracy in the desert area.
The desert surface’s structure is complex, and the difficulty is the static problem. With information of shot point well depth, replacement velocity, ground water plane and surface elevation, and so on, the paper proposes a sand dune curve static computational equation with fixed datum above the surface and compaction coefficient computational equation by the least square method, and carries out comparison with the field measuring statics, it sees from single shot and stack section that the proposed method can effectively solve the long wavelength statics in the desert area, and its application result is better than with the field measuring statics, thus it can improve the static’s computational efficiency and the seismic data processing accuracy in the desert area.
引文
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[9]杨瑞召,王媛媛,王兴元,等.煤田三维地震采区小断层解释方法及应用[J].矿业工程研究,2010,25(1):12-15.YANG Ruizhao,WANG Yuanyuan,WANG Xingyuan,et al.Interpretation of small faults in coalfield3D seismic survey methods and application[J].Mineral Engineering Research,2010,25(1):12-15.
[10]崔凡,鲁博,刘微,等.三维地震属性在潘三矿地质异常识别中的应用[J].矿业工程研究,2010,25(1):41-44.CUI Fan,LU Bo,LIU Wei,et al.Application of3D seismic attributes in the survey of geological anomalies in Pansan coal mine[J].Mineral Engineering Research,2010,25(1):41-44.
[11]杨微,陈可洋.利用图像细化算法检测地震反射同相轴[J].复杂油气藏,2011,4(2):31-34.YANG Wei,CHEN Keyang.The seismic reflection cophasal axes checked by using image thin algorithm[J].Complex Hydrocarbon Reservoirs,2011,4(2):31-34.
[2]戴云,张建中.长波长静校正问题的一种解决方法[J].石油地球物理勘探,2000,35(3):315-325.DAI Yun,ZHANG Jianzhong.A method for long-wavelength static correction[J].Oil Geophysical Prospecting,2000,35(3):315-325.
[3]贾丽华,曾庆才,段洪有,等.塔中沙漠地区深层地震资料处理方法[J].物探与化探,2002,26(3):232-235.JIA Lihua,ZENG Qingcai,DUAN Hongyou,et al.Deep seismic data processing technique for central Taklimakan desert area[J].Geophysical and Geochemical Exploration,2002,26(3):232-235.
[4]胡鹏飞,康艳芳,李钢,等.塔里木盆地低信噪比地震资料处理方法研究[J].石油地球物理勘探,2003,38(2):203-207.HU Pengfei,KANG Yanfang,LI Gang,et al.Study on processing method for seismic data with low S/N ratio in Tarim basin[J].Oil Geophysical Prospecting,2003,38(2):203-207.
[5]赵军才,李铮,崔喜凤,等.塔中沙漠区地震资料静校正和去噪[J].勘探地球物理进展,2004,27(2):123-127.ZHAO Juncai,LI Zheng,CUI Xifeng,et al.Static correction and noise removal for data from the center of Tarim Basin[J].Progress in Exploration Geophysics,2004,27(2):123-127.
[6]杜耀武,齐中山,李贺,等.塔里木盆地大沙漠区沙丘曲线静校正方法研究[J].河南石油,2005,19(4):16-17,32.DU Yaobin,QI Zhongshan,LI He,et al.Study of dune curve static correction method in large desert area in Tarim basin[J].Henan Petroleum,2005,19(4):16-17,32.
[7]吴长江.一种用于沙漠地区地震资料静校正的沙丘曲线公式[J].石油天然气学报,2008,30(4):88-91.WU Changjiang.A new and simple curve equation for correcting dune seismic data[J].Journal of Oil and Gas Technology,2008,30(4):88-91.
[8]孔剑冰,庄道川,高雁,等.塔里木盆地沙漠区低信噪比地震资料静校正和去噪方法[J].物探与化探,2005,29(3):257-260.KONG Jianbin,ZHUANG Daochuan,GAO Yan,et al.A study of static correction and denoising method for low signal-to-noise ratio seismic data from the desert area of TARIM basin and its application[J].Geophysical and Geochemical Exploration,2005,29(3):257-260.
[9]杨瑞召,王媛媛,王兴元,等.煤田三维地震采区小断层解释方法及应用[J].矿业工程研究,2010,25(1):12-15.YANG Ruizhao,WANG Yuanyuan,WANG Xingyuan,et al.Interpretation of small faults in coalfield3D seismic survey methods and application[J].Mineral Engineering Research,2010,25(1):12-15.
[10]崔凡,鲁博,刘微,等.三维地震属性在潘三矿地质异常识别中的应用[J].矿业工程研究,2010,25(1):41-44.CUI Fan,LU Bo,LIU Wei,et al.Application of3D seismic attributes in the survey of geological anomalies in Pansan coal mine[J].Mineral Engineering Research,2010,25(1):41-44.
[11]杨微,陈可洋.利用图像细化算法检测地震反射同相轴[J].复杂油气藏,2011,4(2):31-34.YANG Wei,CHEN Keyang.The seismic reflection cophasal axes checked by using image thin algorithm[J].Complex Hydrocarbon Reservoirs,2011,4(2):31-34.
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