CAJ | 학술논문

常规单船海洋拖缆三维采集作业时，由于施工区存在钻井平台、采油平台等障碍物，经常会留有采集资料空白区，而使用双船作业方式（Undershooting）——一艘震源船进行震源激发；另一艘拖缆船上的震源不再激发（只保留震源上RGPS和声学装备的定位功能），而是尽可能地靠近障碍物使用拖缆接收地震数据，这样即可避免单船施工的缺陷而获得空白区的地震资料。本文详细介绍了双船作业时需要的设备及其相关配置和关键参数的设置。
상규단선해양타람삼유채집작업시，유우시공구존재찬정평태、채유평태등장애물，경상회류유채집자료공백구，이사용쌍선작업방식（Undershooting）——일소진원선진행진원격발；령일소타람선상적진원불재격발（지보류진원상RGPS화성학장비적정위공능），이시진가능지고근장애물사용타람접수지진수거，저양즉가피면단선시공적결함이획득공백구적지진자료。본문상세개소료쌍선작업시수요적설비급기상관배치화관건삼수적설치。
Blank areas often exist due to the drilling platform, oil platforms and other obstacles in conventional single streamer 3D acquisition operation. Undershooting mode will avoid the defects of single-boat and acquire seismic data in blank area. In this mode, one vibrator source excitation, another one only keep the RGPS and acoustic positioning function and as close as possible to obstacles to receive seismic data with streamer. This paper introduces how to get the Undershooting configuration and how to set key parameters.