摘要
地震勘探仪器的同步精度、同步稳定性、同步一致性和井口时间是地震勘探作业时用于表征数据采集和炮点激发的重要检验指标。在实际生产过程中,需要将同步精度调整到规定的要求,即通过调整电台参数使钟TB和验证TB同步,保证采集数据的起始时刻和炮点的激发时刻的一致性。同时,还需要对同步稳定性、同步一致性和井口时间进行验证,确保地震采集资料的品质。为了获得准确的参数,一般通过使用示波器或者井口仿真器等设备来检测,但在国际项目运作时存在测试所需设备数量不充足、调拨不方便等原因。因此,本文介绍一种自主井口仿真测试工具的设计、制作和测试方法,并通过了Sercel的e SGA软件实际应用效果检测,为野外测试提供技术借鉴。
The synchronization accuracy,synchronization stability,synchronization consistency and uphole time of seismic exploration instruments are important inspection indicators for characterizing data acquisition and shot excitation during se ismic exploration operations.During the production process,the synchronization accuracy needs to be adjusted to the specified requirements,that is,the clock TB and the verification TB need to be synchronized through adjusting parameter radio to ensu re the final accuracy of the seismic data.At the same time,it is also necessary to verify the synchronization stability,synchronization consistency and uphole time to ensure the quality of the acquired seismic data.In order to obtain accurate parameters,equip ment such as oscilloscope testing or uphole simulators can be used for testing,but there are reasons such as insufficient equipment required for testing and inconvenient deployment during the international projects.This article introduces the design,make,and testing way of an independent unhole simulation test tool,and has passed the actual application effect test of Sercel’s eSGA software.
作者
魏麦忠
孔春超
Wei Maizhong;Kong Chunchao
出处
《物探装备》
2021年第3期168-171,共4页
Equipment for Geophysical Prospecting
关键词
井口时间
仿真测试
同步精度
eSGA
uphole time
simulation test
synchronization accuracy
eSGA
