海南特殊地理环境下的地震资料处理技术研究
|
摘要
海南福山凹陷地理环境特殊,属于陆地与浅海过渡区域,其地表条件及地质条件复杂多样,由此导致了地震资料品质差、分辨率低。通过开展地震资料处理技术研究与应用,处理后的资料效果令人满意。关键的处理技术包括微测井积分法静校正技术、匹配滤波法子波整形技术以及交互减去法压制多次波技术。针对海南特殊地理地表条件,在大炮初至、折射法静校正和层析法静校正等常规静校正技术无法发挥作用的情况下,开发研制的微测井积分法静校正技术较好地解决了静校正问题,使得有效反射的连续性得到明显的改善。在对主要的地震资料一致性处理方法优缺点对比的基础上,采用匹配滤波法子波整形技术消除了不同接收条件下的地震信号的不一致性。研究区内浅表层火成岩的存在,导致了多次波异常发育,采用交互减去法压制多次波技术后,消除了多次波干扰,有效地保护了一次有效反射信号。
Fushan sag,Hainan Island is special in geography.It is located in the transition area of land and shallow sea,featuring complex surface and subsurface conditions.The data acquired from the sag are poor in quality and low in resolution.Object-oriented data processing study has been carried out,and a suite of techniques has been developed.The techniques mainly include uphole integral static correction,matched filtering wavelet shaping,and interactive multiple removal.The uphole integral static correction was developed to replace commonly used static correction methods such as shooting first break,refraction statics,and tomographic statics to improve the continuity of reflections.The matched filtering wavelet shaping is used to remove the disagreement of seismic signatures acquired in different receiving conditions.Multiples are well developed due to the presence of igneous rocks in shallow formation.Interactive multiple removal is effective in protecting primaries in seismic data.
Fushan sag,Hainan Island is special in geography.It is located in the transition area of land and shallow sea,featuring complex surface and subsurface conditions.The data acquired from the sag are poor in quality and low in resolution.Object-oriented data processing study has been carried out,and a suite of techniques has been developed.The techniques mainly include uphole integral static correction,matched filtering wavelet shaping,and interactive multiple removal.The uphole integral static correction was developed to replace commonly used static correction methods such as shooting first break,refraction statics,and tomographic statics to improve the continuity of reflections.The matched filtering wavelet shaping is used to remove the disagreement of seismic signatures acquired in different receiving conditions.Multiples are well developed due to the presence of igneous rocks in shallow formation.Interactive multiple removal is effective in protecting primaries in seismic data.
引文
1赵峰,郑鸿明,杨晓海,等.地震数据处理中静校正对动校正速度的影响[J].新疆石油地质,2004,25(4):390~393
2李辉峰,邹强.非地表一致性静校正方法探讨[J].石油地球物理勘探,2005,40(增刊):128~137
3张凤军,吕延防.地震老资料连片高分辨率处理方法[J].大庆石油学院学报,2004,28(1):7~9
4云美厚,丁伟,王开燕,等.地震资料一致性处理方法研究与初步应用[J].石油物探,2006,45(1):65~69
5宋玉龙.滩浅海地区地震勘探存在问题及其解决办法[J].石油物探,2005,44(4):343~347
6马在田.反射地震成像分辨率的理论分析[J].同济大学学报,2005,33(9):1 144~1 152
7陆基孟.地震勘探原理(上册)[M].东营:石油大学出版社,1993.242
8李文莲,冯和平.变倾角扫描提取有效信号技术及应用[J].勘探地球物理进展,2002,25(2):11~13
9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李辉峰,邹强.非地表一致性静校正方法探讨[J].石油地球物理勘探,2005,40(增刊):128~137
3张凤军,吕延防.地震老资料连片高分辨率处理方法[J].大庆石油学院学报,2004,28(1):7~9
4云美厚,丁伟,王开燕,等.地震资料一致性处理方法研究与初步应用[J].石油物探,2006,45(1):65~69
5宋玉龙.滩浅海地区地震勘探存在问题及其解决办法[J].石油物探,2005,44(4):343~347
6马在田.反射地震成像分辨率的理论分析[J].同济大学学报,2005,33(9):1 144~1 152
7陆基孟.地震勘探原理(上册)[M].东营:石油大学出版社,1993.242
8李文莲,冯和平.变倾角扫描提取有效信号技术及应用[J].勘探地球物理进展,2002,25(2):11~13
9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
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心