理论模型研究存在伪效果风险

Pseudo effect risk of theoretical model study

理论模型研究对指导和验证实际地震资料的处理解释具有重要的实用意义。介绍了VSP逆时偏移基本原理及脉冲响应研究,同时采用两种地震成像条件对国际标准的岩丘理论模型进行VSP逆时成像处理研究,并将成像条件应用于实际井中VSP地震资料逆时成像处理和效果对比,由此探讨理论模型研究可能存在的伪效果风险问题,并给出模型效果可实用性的验证思路,以此供业内同行参考。

Studying on the theoretical model has important practical significance for the guidance and verification of the actual seismic data processing and interpretation, this paper introduces the basic principle of VSP reverse time migration and does the VSP impulse response study, at the same time, carries out VSP reverse time migration research on the international standard salt theoretic model with two kinds of seismic imaging conditions, and uses the imaging conditions to the practical borehole VSP seismic data processing and the reverse time imaging results are compared, so as to explore the pseudo effect risk of theoretic model study may exist, and present the practical ideas which can be verified, thus providing reference for the others in the industry.