叠前深度偏移技术在李埠地区的应用
|
摘要
江汉盆地江陵李埠地区地下断层、构造复杂,速度横向变化剧烈,利用常规的叠后时间偏移技术很难得到高质量的地下地质信息。因此,针对江汉油田的Inline146、Inline166的地震资料,经GeoDepth软件的常规分析处理,其结果表明,叠前深度偏移剖面较叠后时间偏移有许多优点:断层成像效果好、偏移归位准确、复杂构造成像效果好等。
In Libu Area of Jianghan Basin, underground fault structure is complex, lateral velocity changes severely, it is very hard to obtain high-quality underground geologic information with conventional post-stack time migration. Therefore, based on the seismic data of Inline 146 and Inline 166 in Jianghan Oilfield, conventional analysis is made with GeoDepth software. The result shows that compared with post-stack time migration, pre-stack depth migration profile has many advantages, including better fault imaging, accurate migration homing and better effect of complex structural imaging.
In Libu Area of Jianghan Basin, underground fault structure is complex, lateral velocity changes severely, it is very hard to obtain high-quality underground geologic information with conventional post-stack time migration. Therefore, based on the seismic data of Inline 146 and Inline 166 in Jianghan Oilfield, conventional analysis is made with GeoDepth software. The result shows that compared with post-stack time migration, pre-stack depth migration profile has many advantages, including better fault imaging, accurate migration homing and better effect of complex structural imaging.
引文
[1]马在田.地震成像技术(有限差分偏移)[M].北京:石油工业出版社,1989.
[2]祝文亮,刘俊杰,梁峰等.三维叠前深度偏移技术在千米桥潜山勘探中的应用与效果[J].石油地球物理勘探,2001,36(1):86~92.
[3]陆基孟.地震勘探原理[M].北京:石油工业出版社,1986.
[4]陈广军,陈喜禄,杨永生等.地震技术的一个崭新领域[J].油气地质与采收率,2001,8(4):38~41.
[5]李家蓉,蒋进勇,徐丽萍.二维叠前深度偏移技术在新疆塔北地区的应用[J].石油物探,1999,38(2):87~92.
[2]祝文亮,刘俊杰,梁峰等.三维叠前深度偏移技术在千米桥潜山勘探中的应用与效果[J].石油地球物理勘探,2001,36(1):86~92.
[3]陆基孟.地震勘探原理[M].北京:石油工业出版社,1986.
[4]陈广军,陈喜禄,杨永生等.地震技术的一个崭新领域[J].油气地质与采收率,2001,8(4):38~41.
[5]李家蓉,蒋进勇,徐丽萍.二维叠前深度偏移技术在新疆塔北地区的应用[J].石油物探,1999,38(2):87~92.
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