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P-SV转换波静校正问题是陆地多波勘探的“瓶颈”问题,目前尚未有公认的有效解决方法。针对大庆地区的实际情况,提出了一种转换波组合静校正方法,即将基于三分量微测井资料的模型法和改进型共接收点叠加道集相干法组合在一起进行转换波静校正。模型法较好地解决了转换波长波长静校正问题,改进型共接收点叠加道集相干法解决了转换波中、短波长静校正问题。两种方法的有机结合,较好地解决了该地区转换波静校正问题,消除了因静校正问题造成的假构造现象,增强了同相轴的连续性,提高了转换波地震剖面的品质。
The problem of P-SV converted wave static correction is a “bottleneck ” problem of multi-wave exploration on land. There is no recognized effective solution. Aiming at the actual situation in Daqing area, a new method of static correction of converted wave combination is proposed, which combines the model method based on three-component micro-well logging data and the improved co-receiver overlap superposition gaze coherent method to carry out converted-wave static correction. The model method solves the problem of static correction of the wavelength of the converted wavelength, and the improved coherent receiving point superposition of the channel sets coherent method solves the problem of the short wavelength static correction in the converted wave. The organic combination of the two methods can well solve the problem of static correction of converted waves in the region, eliminate the false tectonics caused by the static correction problem, enhance the continuity of the events and improve the quality of converted seismic wave profile.