采油工区周期性噪声消除方法  

Periodic Noise Removal Method at Oil Extraction District

作　　者：沐建飞[1] 王成礼[2] 牟风明[2] 刘守伟 

机构地区：[1]上海交通大学数学系,上海200240 [2]胜利油田物探公司,东营257100 [3]上海锦迪软件开发有限公司,上海200093

出　　处：《上海交通大学学报》2009年第7期1177-1179,共3页Journal of Shanghai Jiaotong University

摘　　要：基于老油区地震勘探中抽油机、电机、钻井等周期性噪声的特点,提出了一种消除周期性噪声的方法.假定已知噪声的周期,利用周期函数的特殊性,忽略两端效应,推导出递归滤波器的算法,并对递归滤波算法进行适当修改,保证了滤波器的稳定性和物理可实现性.理论记录试算与实际资料处理表明,该方法能够有效压制干扰,且不损伤有效信号.Based on the characters of periodic noise, such as noises of pumping units, electromotors, drilling machines in mature oilfield exploration, this paper presented a method to eliminate them. The basic idea is supposing that the noise＇s period T is known, using the characters of periodic {unctions and ignoring the truncation effects to derive a recursive filter arithmetic. By mildly modifying the operator one can make sure the filter is stable and physically realizable. The tests on the synthetical record and real field data prove that this method can effectively suppress the noises without damaging the useful signals.

关 键 词：周期性噪声 递归滤波 噪声压制 

分 类 号：TE19[石油与天然气工程—油气勘探]