数字检波器三分量地震勘探技术的应用
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摘要
在东濮凹陷MC地区进行了数字三分量检波器二维地震采集试验,所获得的纵波单炮记录中高频成分的能量明显增强。经保幅处理后,剖面的分辨率较二维老剖面有明显提高。通过转换波处理得到X分量和Y分量剖面,对剖面沿时间轴进行压缩处理,压缩后的转换波剖面与纵波剖面有较好的对比性。该区气藏的顶面纵波振幅和横波振幅分别表现为"暗点"和"亮点",通过振幅比技术确定气藏区,低振幅比异常对应着含气区。该区马62井振幅比异常显示和钻探情况吻合。
Using 3-component digital geophone for the first time interiorly, Institute of Geophysical Exploration, ZPEB proceed to 2-D seismic acquisition experiment in Dongpu depression MC area. High frequency energy of single cannon record in P wave seismic data is strengthened obviously. After analyzing amplitude fidelity section, the resolution of digital geophone section, which is compared with the old section, is more enhancive than 2 D old section obviously, and corresponds with 3-D old section. After processing converted wave, X aspect seismic section and Y aspect seismic section are obtained. Then they are compressed along time axis, and are compared P wave section to analyze their amplitude, then gas singular vision of amplitude ratio in M-62 well is as the same as drilling results.
Using 3-component digital geophone for the first time interiorly, Institute of Geophysical Exploration, ZPEB proceed to 2-D seismic acquisition experiment in Dongpu depression MC area. High frequency energy of single cannon record in P wave seismic data is strengthened obviously. After analyzing amplitude fidelity section, the resolution of digital geophone section, which is compared with the old section, is more enhancive than 2 D old section obviously, and corresponds with 3-D old section. After processing converted wave, X aspect seismic section and Y aspect seismic section are obtained. Then they are compressed along time axis, and are compared P wave section to analyze their amplitude, then gas singular vision of amplitude ratio in M-62 well is as the same as drilling results.
引文
1 黄中玉.多分量地震勘探的机遇和挑战[J].石油物探, 2001,40(2):131-137
2 徐丽萍,杨勤勇.多波多分量地震技术发展与展望[J]. 勘探地球物理进展,2002,25(3):47-52
3 刘洋,魏修成.转换波地震勘探的若干问题与对策[J]. 勘探地球物理进展,2003,26(4):247-251
4 刘洋.我国陆上转换波质量评价[J].石油地球物理勘 探,2002,37(2):191-195
2 徐丽萍,杨勤勇.多波多分量地震技术发展与展望[J]. 勘探地球物理进展,2002,25(3):47-52
3 刘洋,魏修成.转换波地震勘探的若干问题与对策[J]. 勘探地球物理进展,2003,26(4):247-251
4 刘洋.我国陆上转换波质量评价[J].石油地球物理勘 探,2002,37(2):191-195
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