摘要
多次波压制是个科学、循序渐进的过程,去多次波速度的拾取应紧密参考工区井资料数据,更能提高速度拾取精度。当工区存在多次波干扰时,针对多次波衰减前的一次波速度分析原则上,先拾取在多次波速度和一次波速度之间,靠近一次波速度;运用radon变换衰减多次波后,再拾取一次波速度,要求做到精确细致。然后叠加剖面以及在道集、速度谱、自相关和剖面上,多种手段反复对比衰减多次波效果条件下,反复迭代一次速度,最终逐步逼近真实、可靠的精确一次波速度。
Multiple suppression is a scientific and progressive process.Multiple elimination velocity picking should be based on well data in the work area to improve velocity picking precision.Aiming at multi-wave interference in the work area,pick first up primary wave velocity between multi-wave velocity and one wave velocity according to primary wave velocity analysis theory before multiples attenuation.Pick up once more primary wave velocity after Radon is used to change multiples attenuation to ensure its accuracy.Then repeat iteration of primary wave velocity by using various means to repeat comparison of multiples attenuation effect so as to approach step by step true and reliable primary wave velocity.
作者
舒望红
SHU Wanghong(Geophysical Prospecting Research Institute of Jianghan Oilfield Company,SINOPEC,Qianjiang,Hubei,433100,China)
出处
《江汉石油职工大学学报》
2018年第4期4-6,共3页
Journal of Jianghan Petroleum University of Staff and Workers
关键词
多次波
速度分析
一次波速度拾取
叠加成像
Multiple Waves
Velocity Analysis
Primary Wave Velocity Picking
Stack Imaging
