Analysis of geophone array method in low SNR complex area of Ordos Basin
-
摘要: 在鄂尔多斯盆地西北部，低信噪比复杂地区存在严重的随机干扰，这导致该区地震资料信噪比很低。在不提高覆盖次数情况下，针对该区造成地震资料信噪比低的严重随机干扰问题，开展检波器组合压制随机干扰的方法研究。研究了随机干扰对动静校正量准确求取的影响，检波器组合对干扰波的压制作用，组内高差和组合基距对地震采集资料高频的影响，对比分析检波器组内距对随机干扰的衰减效果。研究结果表明：在盆地低信噪比复杂地区，野外检波器组合重点压制严重的随机干扰波，提高地震资料信噪比；小于1 m的检波器组内高差对该区地震采集资料110 Hz以下高频成分影响有限，小于13 m组合基距对中、深目的层地震资料70 Hz以内频率影响有限；理论计算和试验资料综合确定的随机干扰半径为1.7~2.0 m，大于随机干扰半径的检波器组合内距能有效压制随机干扰波，其中组内距3 m比较稳定；以上参数确定的检波器组合接收方法压制随机干扰波后，所得到的地震单炮记录相比单点接收、高覆盖次数压制随机干扰波所得到的资料在70 Hz有限频带内更能提高信噪比、频率，而且成本相对低。该结果在鄂尔多斯盆地低信噪比复杂地区地震勘探野外采集中具有指导作用。Abstract: In the northwest of Ordos Basin, there is serious random interference in the complex area, which leads to the low signal-to-noise ratio of seismic data in this area. In order to solve the problem of low signal-to-noise ratio(SNR) of seismic data in this area, a method study of suppressing random interference by geophone array is carried. The influence of random interference on the accurate calculation of NMO correction and static correction, the suppression of interference wave by geophone array, the influence of intra group height difference and array base distance on high frequency of seismic acquisition data are studied, and the attenuation effect of geophone array internal distance on random interference is compared and analyzed. The results show that: in the area with low signal-to-noise ratio in the basin, the field geophone array mainly suppresses the serious random interference wave and improves the signal-to-noise ratio of seismic data; the height difference of geophone array less than 1 m has limited influence on the high-frequency components below 110 Hz of the seismic acquisition data in this area, and the base distance less than 13 m has limited influence on the frequency within 70 Hz of seismic data of medium and deep target layers; The random interference radius determined by theoretical calculation and experimental data is 1.7-2.0 m. the inner distance of geophone array larger than the random interference radius can effectively suppress the random interference wave, among them, the effect of the geophone group inner distance of 3 m is more stable. The results show that the method of geophone array receiving with the above parameters can improve the signal-to-noise ratio and frequency in the limited frequency band of 70 Hz, and the cost is relatively low. This conclusion has a guiding role in seismic exploration field acquisition in low SNR complex area of Ordos Basin.
-
-
[1] 李庆忠.地震高分辨率勘探中的误区与对策[J]. 石油地球物理探,1997,32(6):751-783. LI Qingzhong. Some mistaken concepts in high-resolution seismic exploration and the corresponding countermeasures[J]. Oil Geophysical Prospecting,1997,32(6):751-783.
[2] 曹务祥. 检波器组合问题的分析[J]. 石油物探,2008,47(5):505-510. CAO Wuxiang. Analysis on the problems of geophone array[J]. Geophysical Prospecting for Petroleum,2008,47(5):505-510.
[3] 李庆忠,魏继东.论检波器横向拉开组合的重要性[J]. 石油地球物理勘探,2008,43(4):375-382. LI Qingzhong,WEI Jidong. Talk about importance of cross-line array of geophone on spread[J]. Oil Geophysical Prospecting,2008,43(4):375-382.
[4] 魏继东,丁伟.检波器野外组合因素对地震资料品质的影响分析[J].石油物探,2010,49(3):312-318. WEI Jidong,DING Wei. Impact analysis of geophone array factors on seismic data quality[J]. Geophysical Prospecting for Petroleum,2010,49(3):312-318.
[5] 雷扬,吴闻静,刘远志,等. 羌塘盆地地震资料采集检波器组合方法研究[J]. 复杂油气藏,2012,5(2):36-40. LEI Yang,WU Wenjing,LIU Yuanzhi,et al. Research of combinatorial methods of geophone for seismic data acquisition in Qiangtang Basin[J]. Complex Hydrocarbon Reservoirs,2012,5(2):36-40.
[6] 索重辉,杨勤勇,吕公河,等. 塔河地区检波器组合方式选择及效果分析[J]. 石油地球物理勘探,2015,50(3):393-398. SUO Chonghui,YANG Qinyong,LYU Gonghe,et al. Geophone array patterns for seismic acquisition in Tahe[J]. Oil Geophysical Prospecting,2015,50(3):393-398.
[7] 王永刚,段世民,朱兆林,等.复杂地表条件下检波器组合的特性分析[J].石油地球物理勘探,2003,38(2):126-130. WANG Yonggang,DUAN Shimin,ZHU Zhaolin,et al. Characteristic analysis of receiver-array in complicated surface conditions[J]. Oil Geophysical Prospecting,2003,38(2):126-130.
[8] 魏继东,李庆忠.检波器组内高差对高频信息压制的理论分析[J].石油地球物理勘探,2007,42(5):597-602. WEI Jidong,LI Qingzhong. Theoretical analysis on suppression of high-frequency information by elevation difference within geophone array[J]. Oil Geophysical Prospecting,2007,42(5):597-602.
[9] 刘胜,杨继友,文雪康,等. 龙门山大山区检波器组合高差认识[J]. 复杂油气藏,2015,8(4):27-30. LIU Sheng,YANG Jiyou,WEN Xuekang,et al. Understanding altitude difference of geophone array in Longmen Mountain area[J]. Complex Hydrocarbon Reservoirs,2015,8(4):27-30.
[10] 王志强,韩立国,巩向博,等. 起伏地表检波器组合响应[J].吉林大学学报(地球科学版),2014,44(2):694-703. WANG Zhiqiang,HAN Liguo,GONG Xiangbo,et al. Geophone array response on undulating surface[J]. Journal of Jilin University(Earth Science Edition),2014,44(2):694-703.
[11] 蒋连斌,崔文鹏,傅朝奎,等. 震检联合组合在高分辨率地震资料采集中的应用[J]. 石油物探,2000,39(3):73-78. JIANG Lianbin,CUI Wenpeng,FU Chaokui,et al. Application of source and geophone uniting array in the high resolution seismic data acquisition[J]. Geophysical Prospecting for Petroleum,2000,39(3):73-78.
[12] 梁传坤,韩军. 提高地震分辨率的检波器组合设计[J]. 物探装备,2006,16(1):29-32. LIANG Chuankun,HAN Jun. Design of geophone array for improving seismic resolution[J]. Equipment for Geophysical Prospecting,2006,16(1):29-32.
[13] 罗岐峰,彭章池,王海立,等. 重新认识地震组合检波的作用[J]. 石油地球物理勘探,2008,43(3):257-264. LUO Qifeng,PENG Zhangchi,WANG Haili,et al. Understanding role of seismic geophone array again[J]. Oil Geophysical Prospecting,2008,43(3):257-264.
[14] 王珂. 检波器组合对高分辨率地震勘探的影响[J]. 中国煤炭地质,2010,22(7):61-65. WANG Ke. Geophone array's impact on HR seismic prospecting[J]. Coal Geology of China,2010,22(7):61-65.
[15] 于宝华,刘凤智,杨全斌,等. 组合接收误差对静校正的影响分析[J]. 石油地球物理勘探,2016,51(增刊1):38-41. YU Baohua,LIU Fengzhi,YANG Quanbin,et al. Influences of geophone arrays on static corrections[J]. Oil Geophysical Prospecting,2016,51(Sup.1):38-41.
[16] 李庆忠,魏继东. 高密度地震采集中组合效应对高频截止频率的影响[J]. 石油地球物理勘探,2007,42(4):363-369. LI Qingzhong,WEI Jidong. Influence of array effect on cutoff frequency of high frequency in high density seismic acquisition[J]. Oil Geophysical Prospecting,2007,42(4):363-369.
[17] 卫东,倪良建,田雨东. 盒子波调查技术在塔中沙漠区的应用[J]. 新疆石油地质,2005,26(6):701-703. WEI Dong,NI Liangjian,TIAN Yudong. Application of square array of geophone to desert Tazhong area,Tarim Basin[J]. Xinjiang Petroleum Geology,2005,26(6):701-703.
[18] 王飞,裴金梅,刘凤智,等.羌塘盆地尼玛地区盒子波分析[J]. 物探与化探,2018,42(2):352-357. WANG Fei,PEI Jinmei,LIU Fengzhi,et al.Box wave analysis of Nima area in Qiangtang Basin[J]. Geophysical and Geochemical Exploration,2018,42(2):352-357.
[19] 陆基孟,王永刚.地震勘探原理(第三版)[M]. 青岛:中国石油大学出版社,2011. LU Jimeng,WANG Yonggang.The principle of seismic exploration[M]. Qingdao:China University of Petroleum Press,2011.
-
期刊类型引用(3)
1. 温亨聪. 矿井地震检波器安装方式对信号采集的影响研究. 煤矿安全. 2024(09): 231-236 . 
百度学术
2. 彭更新，徐峰，徐凯驰，刘福烈，李勇军. 基于宽频子波的检波组合目标函数优化方法. 西南石油大学学报(自然科学版). 2023(02): 32-42 . 百度学术
3. 聂明涛，占春启，郎文立，梁顺利，张健宸. 6串1并与3串2并检波器串连接方式对比分析. 石油管材与仪器. 2022(06): 81-84+90 . 百度学术
其他类型引用(3)
计量
- 文章访问数: 143
- HTML全文浏览量: 21
- PDF下载量: 15
- 被引次数: 6
下载:
