【摘要】 红北地区位于准噶尔盆地,构造复杂,地层倾角大,三维叠后时间偏移成像效果不好,为此,在该地区开展了三维叠前时间偏移处理技术的研究。介绍了三维叠前时间偏移方法的基本原理和实现过程,对该方法在红北地区的应用效果进行了分析。叠前时间偏移剖面和叠后时间偏移剖面的对比说明,地震资料的成像精度得到了较大的提高,剖面上断点清楚,断层清晰,地震波组特征明显,与井的吻合程度高。更多还原

【Abstract】 Hongbei area is located in Junggar Basin, with complex structure, steep dip-sangle strata and abundant faults. Image of 3-D poststack time migration is poor in HB area; however, results show that 3-D prestack time migration technique can improve effectively the image precision of seismic data. The result section are characterized by clearer faults, reliable breakpoint, and matching well with well data. The results allowed for high precise structural interpretation. This paper presented the basic theory and main steps and processing efficient of 3-D prestack time migration.更多还原