检波器倾斜值对地震数据采集的影响分析  

The impact of geophone tilt angle on seismic acquisition data

作　　者：齐永飞 张慕刚 李国发[1] 鄂殿梁 张翊孟 Qi Yongfei;Zhang Mugang;Li Guofa;Ao Dianliang;Zhang Yimeng

机构地区：[1]中国石油大学,北京100249 [2]东方地球物理公司国际勘探事业部

出　　处：《物探装备》2022年第5期281-286,共6页Equipment for Geophysical Prospecting

摘　　要：地震勘探施工中,检波器倾斜测试(Tilt Test)作为仪器采集系统日检的重要项之一,经常被误认为是对检波器埋置垂直程度的一种检测,但其真正作用是通过脉冲信号对测线上各地震道响应的一致性进行监控。检波器野外埋置的倾斜角度(以下简称倾斜角度)对倾斜测试结果有着不同程度的影响,对地震采集数据质量有着很大影响使其成为地震采集中关注的焦点。本文简要介绍了检波器在线倾斜度测试(Tilt)原理,并采用SG-10(3串3并)检波器串进行了一系列检波器倾斜埋置接收对比试验,分析了该种检波器组合中,检波器埋置倾斜角度和仪器倾斜测试(Tilt)之间的关系,以及检波器倾斜角度对地震采集数据的影响,对纠正相关技术人员认识误区,应对施工过程中检波器倾斜Tilt测试超标问题具有一定的指导意义。During seismic acquisition operation,the Tilt Test is one of the important items in the daily instrument tests.It is often considered to be a test for the verticality of the geophone planting.However,it truly aims at the consistency of the response to the given pulse in each seismic trace.In fact,the tilt angle of the geophone laid out in the field(hereinafter referred to as the tilt angle)brings a great impact on the quality of seismic data,and affects the tilt test result as well.This article briefly introduces the principle of the geophone tilt test(Tilt),and use SG-10 geophone string with 9 elements(3 in series and 3 in parallel)to conduct a series of tilt comparison tests with different tilt angle,to analyze the relationship between the tilt angle and the instrument tilt test result(Tilt),and the impact on seismic acquisition data.It will guide the technicians to correct their misunderstanding and know how to deal with the tilt over limit issue.

关 键 词：检波器组合 检波器倾斜度 Tilt Test 检波器倾斜角度 

分 类 号：P631.44[天文地球—地质矿产勘探]