三维转换波静校正技术
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摘要
利用大庆油田喇嘛甸区块三维三分量地震数据,依据静校正量由大到小分层次解决的思路,首先采用模型法解决了与基准面有关的长波长静校正分量问题,然后在共检波点叠加剖面上利用纵波和转换波的反射信息解决中长波长静校正分量问题,最终应用地表一致性剩余静校正解决短波长静校正分量问题。实际应用结果表明,喇嘛甸区块三维转换波成像剖面与纵波剖面在构造、断层上的形态一致,而且波组保持了纵、横波各自的特点,为后续利用纵、横波联合进行储集层物性分析奠定了基础。
The static correction of converted wave is far complicated than that of P-wave,and it directly influences the imaging quality of the converted wave.On the basis of 3D3C seismic data in Lamadian studied area,the statics are corrected via step-by-step solution from large to small of statics.The model method is firstly adopted to solve the problem of the static component of the long wave length related with the datum level,and then by using the reflection information of P-wave and converted wave on common receiver stack profile,the medium-long wave length can be dealt with.Finally,the same task for the short wave length can be also completed through surface-consistent residual static correction.The practical results show that the 3D converted wave imaging profile in Lamadian studied area is accordant with the P-wave profile in styles of structure and fault,furthermore,the wave group sustains the individual characteristics of P-wave and S-wave,thus the above achievements have laid the foundation of the petrophysical property analysis of the reservoirs using P-wave and S-wave combination.
The static correction of converted wave is far complicated than that of P-wave,and it directly influences the imaging quality of the converted wave.On the basis of 3D3C seismic data in Lamadian studied area,the statics are corrected via step-by-step solution from large to small of statics.The model method is firstly adopted to solve the problem of the static component of the long wave length related with the datum level,and then by using the reflection information of P-wave and converted wave on common receiver stack profile,the medium-long wave length can be dealt with.Finally,the same task for the short wave length can be also completed through surface-consistent residual static correction.The practical results show that the 3D converted wave imaging profile in Lamadian studied area is accordant with the P-wave profile in styles of structure and fault,furthermore,the wave group sustains the individual characteristics of P-wave and S-wave,thus the above achievements have laid the foundation of the petrophysical property analysis of the reservoirs using P-wave and S-wave combination.
引文
[1]赵邦六.多分量地震勘探技术、理论与实践[M].北京:石油工业出版社,2007.
[2]黄绪德,杨文霞.转换波地震勘探[M].北京:石油工业出版社,2008.
[3]姚姚.多波地震勘探的发展历程和趋势展望[J].勘探地球物理进展,2005,28(3):27-31.
[4]赵峰,李献民,彭勇,等.电阻率测井及瞬变电磁法在表层结构研究中的应用[J].新疆石油地质,2008,29(1):102-105.
[5]刘洋,魏修成.转换型折射波传播规律及其在转换波静校正中的应用研究[J].中国科学,2008,38(增刊Ⅰ):204-210.
[6]高磊,潘树林,周熙囊,等.利用转换波初至进行转换波剩余静校正[J].大庆石油地质与开发,2008,27(1):130-133.
[7]何兵寿,张会星,彭苏萍.共转换点道集的抽取与转换波时变静校正[J].海洋地质与第四纪地质,2006,26(6):149-144.
[8]杜庆龙,朱丽红.喇萨杏油田特高含水期剩余油分布及描述技术[J].大庆石油地质与开发,2009,28(5):99-105.
[9]Stewart R R,Gaiser J E,Brown R J,et al.Converted-waveseismic exploration:methods[J].Geophysics,2002,68(5):1 348-1 363.
[2]黄绪德,杨文霞.转换波地震勘探[M].北京:石油工业出版社,2008.
[3]姚姚.多波地震勘探的发展历程和趋势展望[J].勘探地球物理进展,2005,28(3):27-31.
[4]赵峰,李献民,彭勇,等.电阻率测井及瞬变电磁法在表层结构研究中的应用[J].新疆石油地质,2008,29(1):102-105.
[5]刘洋,魏修成.转换型折射波传播规律及其在转换波静校正中的应用研究[J].中国科学,2008,38(增刊Ⅰ):204-210.
[6]高磊,潘树林,周熙囊,等.利用转换波初至进行转换波剩余静校正[J].大庆石油地质与开发,2008,27(1):130-133.
[7]何兵寿,张会星,彭苏萍.共转换点道集的抽取与转换波时变静校正[J].海洋地质与第四纪地质,2006,26(6):149-144.
[8]杜庆龙,朱丽红.喇萨杏油田特高含水期剩余油分布及描述技术[J].大庆石油地质与开发,2009,28(5):99-105.
[9]Stewart R R,Gaiser J E,Brown R J,et al.Converted-waveseismic exploration:methods[J].Geophysics,2002,68(5):1 348-1 363.
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