摘要
南海北部陆坡区大部分为深水崎岖海底地貌,各种类型多次波十分发育,多次波的辨识和压制历来是该区地震资料处理的难点和重点。选取适合的多次波压制技术方法是获得高质量成像地震剖面的关键。通过对东西向排列的三条测线原始资料中多次波的发育情况研究,分析了该区多种类型多次波的特点,组合应用τ-p域预测反褶积、自由表面多次波衰减(SRME)、高精度Radon变换和分频能量衰减法,对各种多次波进行有效压制,使叠加效果和质量明显得到改善,中、深层反射波组特征清楚,易于辨识和解释。
There is mostly rough deep sea bottom topography on the northern slope of the South China Sea. All types of multiples are welldeveloped.Identification and suppression of multiple have always been the emphasis and difficulty in the area＇s seismic data processing.The selection of a suitable method from multiple attenuation techniques is the key to obtaining high quality imaging of seismic profile.Through the study of multiple in original seismic data of three lines located on the northern slope of the South China Sea from the east to the west,the authors analyzed the characteristics of various types of multiple,appliedτp domain deconvolution prediction,SRME （ Surface Related Multiple Elimination） ,highprecision Radon transform and frequency versus energy decay method to effectively suppress various types of multiple,thus making improvement of the quality and effects of composition and clarifying characteristics of reflected waves in the middle and deep layer.As a result,the distinction and explanation become easy.
出处
《物探与化探》
CAS
CSCD
2015年第5期985-993,共9页
Geophysical and Geochemical Exploration
基金
中国地质调查局项目"南海北部陆坡及台湾海峡盆地西部油气地质特征与赋存规律研究"(GZH201200511)
国土资源部全国油气资源战略选区专项"南海北部中生界油气资源前景调查与战略选区"(2009GYXQ03)
关键词
南海北部陆坡
τ-p域预测反褶积
高精度Radon变换
分频能量衰减法
多次波
组合压制技术
SRME
northern slope of South China Sea
τ-p domain prediction deconvolution
SRME
high-precision Radon transform
frequency versus energy decay method
multiples
combination of multiple attenuation techniques
