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“深度成像”是近年来使复杂构造地震成像发生深刻变化最具决定意义的技术。这项技术对于勘探盐下构造远景区带起着关键作用,其成功的应用已使墨西哥湾成为当前勘探活动最活跃的地区。与常规时间成像相比,深度成像明显的优点是揭示了盐下构造的形态和提高了成像的清晰度。 尽管盐下构造远景区正使深度成像获得名声远扬,但是深度成像对其他类型的复杂和隐蔽构造远景区带勘探也能取得显著效果。特别是对于断层屏蔽区和逆冲断层带这两种远景区,深度成像技术能大大提高勘探的成功率。本篇文章将重温偏移成像的基本原理,并且针对地质情况论述这项技术在什么时候可能是有效的。
“Deep imaging” is the most decisive technology that has undergone profound changes in seismic imaging of complex structures in recent years. This technology plays a key role in the exploration of the submarine tectonic foreground zone and its successful application has made the Gulf of Mexico the most active area for exploration activity. The obvious advantage of deep imaging compared to conventional time imaging is that it reveals the morphology of the subsalt structure and improves the sharpness of the image. Although the submarine tectonic vantage zone is gaining a fame for deep imaging, deep imaging can also have significant effects on other types of complex and covert tectonic prospect zones. Especially for the two fault zones, the fault zone and the thrust zone, deep imaging technology can greatly improve the success rate of exploration. This article will revisit the fundamentals of migration imaging and address the geological conditions at what time of the day this technique may be effective.