| 基于广义S变换的吸收衰减梯度检测 |
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| 引用本文： | 张固澜,贺振华,李家金,李琰,吴长江,李可恩.基于广义S变换的吸收衰减梯度检测[J].石油地球物理勘探,2011(6):905-910,1012,832. |
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| 作者姓名： | 张固澜 贺振华 李家金 李琰 吴长江 李可恩 |
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| 作者单位： | 东方地球物理公司新兴物探开发处;成都理工大学油气藏地质及开发工程国家重点实验室;中国石油塔里木油田公司;中国石油西部钻探工程有限公司定向井技术服务公司; |
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| 摘 要： | 利用时频分析可以对地震波进行时频分解,进而获得地震波高频段吸收衰减梯度,用于油气检测。然而当地震记录中高频干扰较强时,高频段时频谱的吸收衰减梯度并不能很好反映真实的吸收衰减情况。本文提出利用目前时频分辨能力较高的广义S变换求取地震波低频段时频谱的衰减梯度,并与高频段的吸收衰减梯度进行对比,以期更好地指示油气。理论推导、数值模拟及实际应用结果表明:基于广义S变换的低频吸收衰减梯度可以与高频吸收衰减梯度相互佐证,更可靠地指示油气的存在。
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| 关 键 词： | 高频 吸收衰减梯度 广义S变换 低频 |
Absorption attenuation gradient detection based on generalized S transform |
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| Zhang Gu-lan,He Zhen-hua,Li Jia-jin,Li Yan,Wu Chang-jiang , Li Ke-en..Deuelopment , Production Seismic Division BGP Inc.,CNPC,Zhuozhou,Hebei,China.State Key Lab of Oil , Gas Reservoir Geology , Exploitation,Chengdu University of Technology,Chengdu,Sicuan ,China.Tarim Oil Field,Korla,Xinjiang ,China.Directional Drilling Technology Services Company of Western Drilling Engineering Limited,Urumqi,Xinjiang ,China.Absorption attenuation gradient detection based on generalized S transform[J].Oil Geophysical Prospecting,2011(6):905-910,1012,832. |
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| Authors: | Zhang Gu-lan He Zhen-hua Li Jia-jin Li Yan Wu Chang-jiang Li Ke-enDeuelopment Production Seismic Division BGP Inc CNPC Zhuozhou Hebei ChinaState Key Lab of Oil Gas Reservoir Geology Exploitation Chengdu University of Technology Chengdu Sicuan ChinaTarim Oil Field Korla Xinjiang ChinaDirectional Drilling Technology Services Company of Western Drilling Engineering Limited Urumqi Xinjiang China |
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| Affiliation: | Zhang Gu-lan1,He Zhen-hua2,Li Jia-jin3,Li Yan4,Wu Chang-jiang1 and Li Ke-en1.1.Deuelopment and Production Seismic Division BGP Inc.,CNPC,Zhuozhou,Hebei,072751,China2.State Key Lab of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu,Sicuan 610059,China3.Tarim Oil Field,Korla,Xinjiang 841000,China4.Directional Drilling Technology Services Company of Western Drilling Engineering Limited,Urumqi,Xinjiang 830026,China |
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| Abstract: | Time-frequency analysis can be used to time-frequency decomposition of seismic waves,and thus to obtain absorption attenuation gradient of high-frequency for hydrocarbon detection.However,when there is strong high-frequency interference in seismic records,the absorption attenuation gradient of high frequency is not a very good response to the real absorption attenuation of layer.In this paper,we take the advantage of higher time-frequency resolution of the generalized S transform and use the time-frequency ... |
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| Keywords: | high frequency absorption attenuation gradient generalized S transform low frequency |
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