RMS分析技术在拖缆地震资料采集质量控制中的应用

英文篇名：Application of RMS analysis technique in QC control of streamer seismic data acquisition
中文刊名：石油地球物理勘探
英文刊名：Oil Geophysical Prospecting
作者：昌松 ; 全海燕 ; 罗敏学 ; 郭毅
英文作者：Chang Song1 ; Quan Hai-yan1 ; 2 ; Lou Min-xue1 and Guo Yi1.1.Deep-sea Business Department ; BGP Inc.of CNPC ; Tianjin City ; 300475 ; China2.China University of Petroleum ; Beijing ; 102200 ; China
中文关键词：均方根值 ; 拖缆地震数据采集 ; 质量控制技术 ; 涌浪噪声 ; 灵敏度
英文关键词：Root mean square value ; streamer seismic data acquisition ; quality control technique ; ocean noise ; sensitivity
出版日期：2010-11-30
机构：东方地球物理公司国际部深海业务经理部;中国石油大学(北京);
年：2010
期：S1
出版单位：石油地球物理勘探

摘要

均方根值(RMS)分析技术是海上拖缆式地震采集过程中典型的质量控制方法之一。本文利用RMS技术对不同时域地震数据噪声强度和灵敏度进行了分析,分别选初至前时窗、目的层时窗、深层时窗,将RMS值按不同关键字平均,且详细地分析了噪声强度;同时对叠后数据取一定时窗进行RMS分析,若所得RMS值过小或者小于某一门槛值,则认为相应通道灵敏度不足。研究表明,RMS分析技术在相应质量控制过程中可更直观、更准确地反映资料噪声水平及各通道灵敏度情况。
RMS analysis technique is one of the typical QC methods used in ocean streamer seismic acquisition,by using the technique the noise strength and sensitivity of the seismic data in different time domains were analyzed in this paper,the RMS values from the time window before the first arrival,time window for the target zone and time window from the deep horizon were averaged for different keywords ,the noise strength were analyzed in detail,at the same time for the post-stack data a certain time window was taken to conduct RMS analysis,if the RMS value acquired is too small or less than a threshold,the sensitivity for the corresponding channel was regarded as not enough.The studies show that the RMS technique can be used directly in the related QC process,it could accurately reflect the noise level for the data and the sensitivity for each channel.

引文

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