Please wait a minute...
E-mail Alert Rss
 
物探与化探  2011, Vol. 35 Issue (2): 238-242    
  方法技术研究 本期目录 | 过刊浏览 | 高级检索 |
检波器数量对组合压噪能力的影响
魏继东
胜利石油管理局 物探公司,山东 东营 262400
THE EFFECTS OF THE NUMBER OF GEOPHONES IN ARRAY ON NOISE ATTENUATION
WEI Ji-dong
Geophysical Corporation,Shengli Oil Administration Bureau,Dongying 262400,China
全文: PDF(910 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 

根据组合压噪的有关理论,在其他因素不变的情况下,采用数量越多的检波器,组合压制干扰波的效果越好。这使得人们认为在施工中应该采用尽量多的检波器以提高资料的信噪比。但是通过分析组合中检波器数量对规则干扰波,随机干扰波以及耦合高频微震衰减的影响证明:在其他因素不变的情况下,线性等灵敏度组合增加到"γmax+3"个检波器以后(其中γmax=组合基距/最小干扰波视波长), 组合对于规则干扰波的衰减能力不再随着检波器数量的增加而显著提高。在组合基距确定的情况下,检波器数量越多,对随机干扰的衰减越明显(包括在组内距小于随机干扰相关半径的情况下);但是增加到一定数量后,衰减效果不再出现明显变化。检波器数量的多少对衰减耦合高频微震没有明显作用。同时指出,确定组合中合理的检波器数量要与组合的摆放形式相结合;组合图形不合理的情况下,增加检波器数量不会显著提高组合的压噪能力;灵敏度分布不合理,是导致组合压噪能力降低的重要原因。在线性等灵敏度组合的基础上,利用玫瑰图进行分析,可以确定工区面积组合(包括道间混波后)中使用的合理的检波器数量。

服务
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章
Abstract

The geophone array in field data acquisition can suppress both the regular interference noise and the scattering interference noise. The regular interference noise is mainly suppressed by directional effect,while the scattering interference noise is mainly suppressed by statistical effect. Relevant theories hold that, when other factors remain fixed, the more geophones are used, the better results are obtained. It seems therefore that more geophones should be used to improve the seismic data quality; nevertheless, the authors' studies have proved that, if the number of geophones in a liner array whose sensitivities are suitably weighted is more than " +3"(where =effective-array-length /minimum-wavelength of regular interference noise), no obvious advantage can be seen by using more geophones. On such a basis, by calculating rose diagrams, the suitable number of geophones in an area-geophone-array or smearing can be pointed out, which is more economical. On the other hand, for the purpose of attenuating environmental noise, the more geophones are used in an array, the better result can be obtained under the condition that the effective array length is fixed. However, when the number of geophones reaches a certain level, no obvious improvement can be made. In addition,the authors' study also shows that the number of geophones has no definite relationship with the couple resonance noise. If the number of geophones in array is to be fixed, the geophone pattern should be taken into account. If the geophone pattern is unsuitable, adding geophones will not be beneficial to the noise attenuation. If the geophone sensitivity is not reasonably distributed, it cannot be helpful to the noise attenuation.

收稿日期: 2010-04-08      出版日期: 2011-04-15
: 

P631.4

 
基金资助:

中石化重点项目"超万道单点高密度数字地震采集试验与应用"(P09072)资助

作者简介: 魏继东(1974-) ,男,山东寿光人,2007年毕业于中国海洋大学海洋地球物理专业,获博士学位,目前在胜利油田博士后工作站物探公司分站从事地震采集方法研究工作,公开发表学术论文数篇。
引用本文:   
魏继东. 检波器数量对组合压噪能力的影响[J]. 物探与化探, 2011, 35(2): 238-242.
WEI Ji-dong. THE EFFECTS OF THE NUMBER OF GEOPHONES IN ARRAY ON NOISE ATTENUATION. Geophysical and Geochemical Exploration, 2011, 35(2): 238-242.
链接本文:  
https://www.wutanyuhuatan.com/CN/      或      https://www.wutanyuhuatan.com/CN/Y2011/V35/I2/238


[1] 陆基孟.地震勘探原理
[M].北京:石油大学出版社. 1990.

[1] 唐世庚, 薛颖. 浅层地震在煤矿采空区勘查中应注意的问题[J]. 物探与化探, 2012, 36(S1): 128-131.
[2] 王军, 杜琦伟, 牛晓辰. 叠前时间偏移技术在构造复杂区地震处理中的应用[J]. 物探与化探, 2012, 36(S1): 146-149.
[3] 韩少明. 利用地震时间剖面反射波特征解释煤矿采空区的方法[J]. 物探与化探, 2012, 36(S1): 175-177.
[4] 曹丽丹. 利用三维地震勘探技术勘查煤矿采空区[J]. 物探与化探, 2012, 36(S1): 178-179.
[5] 曹杰. 应用三维地震勘探技术解释煤田推覆体逆掩构造[J]. 物探与化探, 2012, 36(S1): 137-140.
[6] 扈本娜, 刘国辉, 苗景春. 综合物探方法探测城市地下巷道的可行性[J]. 物探与化探, 2012, 36(S1): 150-153.
[7] 毛星. 地震波CT在注浆效果检测评价中的应用[J]. 物探与化探, 2012, 36(S1): 154-157.
[8] 申有义, 刘海平. 地震属性方法在煤矿采空区解释上的应用[J]. 物探与化探, 2012, 36(S1): 65-69.
[9] 田伟, 常锁亮, 陈强. 观测系统类型及参数对采空区探测的影响[J]. 物探与化探, 2012, 36(S1): 70-77.
[10] 曾维望, 许玉莹, 成跃. 基于地震属性分析的采空区探测技术与应用[J]. 物探与化探, 2012, 36(S1): 78-82.
[11] 王鹤宇. 采空区地球物理勘探技术方法[J]. 物探与化探, 2012, 36(S1): 34-39.
[12] 王军. 利用地震波勘探方法探测小煤矿采空区[J]. 物探与化探, 2012, 36(S1): 124-127.
[13] 张兆芳, 李婧, 刘海军, 江汶波, 李清. 煤田多层采空复杂区物探综合解释技术的应用[J]. 物探与化探, 2012, 36(S1): 141-145.
[14] 曹云勇. 地震CT技术在龙排冲隧道煤窑采空区勘探中的应用[J]. 物探与化探, 2012, 36(S1): 161-163.
[15] 周竹生, 谢金伟. 基于模拟退火法的弯曲射线追踪[J]. 物探与化探, 2011, 35(6): 793-797.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
京ICP备05055290号-3
版权所有 © 2021《物探与化探》编辑部
通讯地址:北京市学院路29号航遥中心 邮编:100083
电话:010-62060192;62060193 E-mail:whtbjb@sina.com