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受地震勘探资料的采集施工方法、地表激发接收条件、复杂的地下传播介质等因素的影响会导致同一区块同一地层反射波组的频率、波形不同,静校正不彻底、速度不准会导致剩余时差,动校正拉伸会导致波形畸变,通常在常规一致性处理后的CMP/CRP道集数据仍然存在一些不一致性问题,会影响资料潜力的发挥,资料的一致性处理对处理成果品质的提高起到至关重要的作用,尤其是在多块三维连片处理、时延地震处理、过渡带探区资料处理、叠前反演处理、高分辨率处理、高精度成像处理等方面均对资料的一致性提出了更高的要求.针对该现实问题,介绍了依赖于图像的相似和有局部光滑变形(或位移)场的非刚性匹配处理技术.该技术在常规一致性处理的基础上,首先将叠前数据分选成炮检距数据,优选部分炮检距数据形成模型,然后对每一炮检距数据逐一与模型进行非刚性匹配,实现数据的一致性处理.给出了实际资料非刚性匹配一致性处理的效果,证实了该技术在提高数据的一致性、改善数据处理成果品质、保持分辨率不降低和振幅保真方面具有一定的优势.因此,该技术可适用于时延地震匹配处理、叠前角道集拉平、叠前CMP/CRP道集拉平、振幅随角度变化(AVA)处理、PS波与PP波同相轴匹配处理等.
Affected by such factors as seismic exploration data acquisition and construction method, surface excitation receiving conditions and complicated underground propagation medium, the frequency and waveform of reflected wave groups in the same formation in the same block are different, the static correction is not complete, and the speed may not be allowed to cause residual Time lag and dynamic correction stretch will lead to waveform distortion. Generally, there are still some inconsistencies in CMP / CRP gather data after routine consistency processing, which will affect the potential of data. The consistency of data processing will improve the quality of processing results Play a crucial role, especially in the multi-piece 3D contiguous processing, delay seismic processing, transition zone data processing, prestack inversion processing, high-resolution processing, high-precision imaging processing and other aspects of the data The paper puts forward a non-rigid match processing technique which is dependent on the similarity of image and a local smooth deformation (or displacement) field.This technique is based on the conventional consistency processing, First, the prestack data is divided into offset data, and the preferred partial offset data is formed. Then, the data of each offset is compared with the model one by one Non-rigid matching, to achieve the consistency of data processing.Given the actual data non-rigid matching consistency of the effect, confirmed that the technology to improve data consistency, improve the quality of data processing results, to maintain the resolution does not reduce the amplitude and Paul Therefore, this technique can be applied to time-lapse seismic matching processing, pre-stack gobo ramp, pre-stack CMP / CRP gobo ramp, amplitude vs. angle change (AVA) Axis matching and so on.