分频技术在储层预测中的应用
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摘要
由于多个波阻抗界面产生的子波叠加效应和鸣振效应．使得地震道不能直观反跌界面位置和地层组合特点,而且不同的地质目标对地震资料的不同频率成分的敏感程度也不同。因此,利用地震信号的特定频率或频带信息来突出地质目标的成像效果,一直是石油物探技术研究的重要内容。利用分频反演、小波分频成像和时频三原色等分频技术,对N9井区的三维地震资料进行了综合研究,得到了比较清晰和合理的储层解释结果,证实了分频技术在储层预测中的有效性和实用性。
The wavelet stacking and ringing arisen from different wave impedance interfaces make it impossible for seismic traces to depict the interface location and the characteristics of formation association visually. Different geological objects have different sensitivities to different frequency components of seismic data. Therefore, using a specific frequency to outstand the images of geological objects is always the primary concern of geophysical studies. We studied the 3-D seismic data of Niu 9 well field by using frequency-divided inversion, wavelet frequency-divided imaging and time-frequency three primary colors. A reasonable reservoir interpretation has been obtained, which demonstrated the validity and applicability of the frequency-divided technique.
The wavelet stacking and ringing arisen from different wave impedance interfaces make it impossible for seismic traces to depict the interface location and the characteristics of formation association visually. Different geological objects have different sensitivities to different frequency components of seismic data. Therefore, using a specific frequency to outstand the images of geological objects is always the primary concern of geophysical studies. We studied the 3-D seismic data of Niu 9 well field by using frequency-divided inversion, wavelet frequency-divided imaging and time-frequency three primary colors. A reasonable reservoir interpretation has been obtained, which demonstrated the validity and applicability of the frequency-divided technique.
引文
1韩申庭,杨华,王大兴等．鄂尔多斯盆地榆林区山西组砂岩气藏岩性地震勘探[J]．天然气工业,1998,18(5): 10-13
2朱红涛,冉崎．分频吸收系数技术在莺歌海盆地乐东地区储层横向预测中的应用[J]．天然气勘探与开发, 2002,25(4):62-67
3王云高,周夏丽,于湘海等．多目标储层地震分时频处理技术[J]．勘探地球物理进展,2004,27(4):274-279
4姜秀清,江洁,高平等．地震属性分析技术在不同油气藏中的应用[J]．石油物探,2004,43(增刊):70-72
5胡光义,王加瑞,武士尧．利用地震分频处理技术预测河流相储层[J]．中国海上油气,2005,17(4):237-241
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7宿淑春,王晓华．分频波阻抗反演方法及其应用[J]．石油大学学报(自然科学版),2000,24(1):85-87
8张波,印兴耀,吴国忱等．用小波分析和反演方法联合去除随机噪声的研究[J]．石油地球物理勘探,1999, 34(6):635-641
2朱红涛,冉崎．分频吸收系数技术在莺歌海盆地乐东地区储层横向预测中的应用[J]．天然气勘探与开发, 2002,25(4):62-67
3王云高,周夏丽,于湘海等．多目标储层地震分时频处理技术[J]．勘探地球物理进展,2004,27(4):274-279
4姜秀清,江洁,高平等．地震属性分析技术在不同油气藏中的应用[J]．石油物探,2004,43(增刊):70-72
5胡光义,王加瑞,武士尧．利用地震分频处理技术预测河流相储层[J]．中国海上油气,2005,17(4):237-241
6王西文,刘全新,赵应成等．小波域的波阻抗反演方法[J]．石油地球物理勘探,2000,35(1):89-96
7宿淑春,王晓华．分频波阻抗反演方法及其应用[J]．石油大学学报(自然科学版),2000,24(1):85-87
8张波,印兴耀,吴国忱等．用小波分析和反演方法联合去除随机噪声的研究[J]．石油地球物理勘探,1999, 34(6):635-641
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