泌阳凹陷南部高陡构造带三维地震资料处理方法
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摘要
针对泌阳凹陷南部陡坡带断面倾角大、地表条件复杂,地震速度横向变化剧烈的地质构造特点,采用初至波层析反演、波动方程延拓基准面校正等高精度静校正技术解决静校正问题,采用Kirchhoff叠前深度偏移技术使其南部边界大断面准确归位。地震成果剖面信噪比、分辨率整体上有明显提高,边界大断面及凹陷基底反射清晰,各种地质现象清楚,为南部陡坡带的勘探提供了可靠的地震资料。
Aimed at the geologic features of the big cross section ,complex surface conditions,severe horizontal changes of seismic velocity in the southern steep slope zone of Biyang Depression,the high precision static correction technology of tomographic inversion by first break and wave equation were used,datum correction was used to solve the problem of static correction ,and Kirchhoff pre-stack migration was used to make a regression of big southern cross section of Biyang Depression accurately.The seismic processing results of signal-to-noise ratio and resolution are obviously improved ,the reflection of boundary cross section and base of the depression and all kinds of geologic phenomena are clear,it provides the reliable seismic data for the exploration of southern steep slope zone of Biyang Depression.
Aimed at the geologic features of the big cross section ,complex surface conditions,severe horizontal changes of seismic velocity in the southern steep slope zone of Biyang Depression,the high precision static correction technology of tomographic inversion by first break and wave equation were used,datum correction was used to solve the problem of static correction ,and Kirchhoff pre-stack migration was used to make a regression of big southern cross section of Biyang Depression accurately.The seismic processing results of signal-to-noise ratio and resolution are obviously improved ,the reflection of boundary cross section and base of the depression and all kinds of geologic phenomena are clear,it provides the reliable seismic data for the exploration of southern steep slope zone of Biyang Depression.
引文
[1]邬达理,杨子兴,朱文杰.复杂条件下三维地震资料处理中的几个关键问题[J].石油物探,2002,41(2):179~185.
[2]林伯香,孙晶梅,刘清林.层析成像低速带速度反演和静校正方法[J].石油物探,2002,41(2):136~140.
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[4]张宏,邱荣华,孙耀华,等.三维地震一体化勘探技术研究及其在泌阳凹陷的应用[J].石油天然气学报,2007,29(5):72~75.
[5]余功铭,张永华.复杂断裂构造带三维地震勘探技术及效果[J].新疆石油地质,2007,28(1):101~103.
[2]林伯香,孙晶梅,刘清林.层析成像低速带速度反演和静校正方法[J].石油物探,2002,41(2):136~140.
[3]王喜双,梁奇,徐凌,等.叠前深度偏移技术应用与进展[J].石油地球物理勘探,2007,42(6):727~732.
[4]张宏,邱荣华,孙耀华,等.三维地震一体化勘探技术研究及其在泌阳凹陷的应用[J].石油天然气学报,2007,29(5):72~75.
[5]余功铭,张永华.复杂断裂构造带三维地震勘探技术及效果[J].新疆石油地质,2007,28(1):101~103.
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