SRME与Radon滤波方法组合衰减深水多次波

Multiple Attenuation in Deep Water Seismic Exploration with Combined Application of SRME and Radon Filtering

深水地震资料多次波具有能量强、周期长的特点,影响了成像质量,降低了信噪比。尤其是深水崎岖海底多次波、绕射多次波发育严重,常规衰减方法很难压制。分析深水多次波的成因、类别、特征是有效衰减多次波的前提,研究多次波衰减技术的优缺点并合理选择、组合是衰减多次波的关键。本文以Q区深水地震资料为例,通过分析比较选择基于模型的3D-SRME方法与高分辨率Radon方法组合衰减深水地震资料多次波,取得了显著的衰减效果,试算结果表明,合理选择并优化组合衰减技术是衰减深水多次波的关键。

Multiple in deep water is of strong energy and long period,which affects the image quality and reduces the S/N.In the deep rough sea,it is very difficult to attenuate submarine multiple and diffraction multiple with conventional attenuation method.The first thing we should do is analyzing the cause of the multiple,multiple type and the characteristics of the multiple.The investigation of the advantages and disadvantages of multiple attenuation techniques so as to make a reasonable choice and combination is the key to attenuate multiple.After analyzing and comparing,the multiple in the deep water of Q area is significantly attenuated by using combined 3D-SRME and high resolution Radon filter technology.The results processed shows that a reasonable choice and optimized combination of attenuation technologies is the key to attenuate multiple in deep water.