CAJ | 학술논문

目前我国近海工程地震勘探主要使用单道地震拖缆接收,地层分辨率较低,无法进行速度分析、覆盖叠加等精细处理.为了解决此问题,本文提出近海高分辨率多道地震拖缆技术,并结合该技术的研究成果,简要介绍了多道地震勘探系统组成和地震拖缆的结构设计,讨论了拖缆水听器的选择,组内距、道间距的确定,并给出了一个工程应用实例.该系统可以满足今后海洋研究和工程勘探的需要,在试验和应用中取得了很好的探测效果,具有很好的应用前景.
목전아국근해공정지진감탐주요사용단도지진타람접수,지층분변솔교저,무법진행속도분석、복개첩가등정세처리.위료해결차문제,본문제출근해고분변솔다도지진타람기술,병결합해기술적연구성과,간요개소료다도지진감탐계통조성화지진타람적결구설계,토론료타람수은기적선택,조내거、도간거적학정,병급출료일개공정응용실례.해계통가이만족금후해양연구화공정감탐적수요,재시험화응용중취득료흔호적탐측효과,구유흔호적응용전경.
The main equipment of offshore seismic exploration of China is the single channel seismic explore system.It is difficult to enhance the resolution in shallow strata.Pointing to the problem,the offshore high resolution multichannel seismic streamer system is proposed.The system redounds to coastal research and ocean engineering.The quality of seismic profiles would enhance after onboard processings,such as velocity analysis,stacking and migration.The streamer has four sections.They are the deck segment,the leading vibration isolation segment,working segment,and tail segment.The hydrophones made by the Institute of Acoustics of Chinese Academy of Sciences are used.By means of calculation,the individual hydrophone element spacing in a group is determined as 0.15 m.The streamer group interval is determined as 3.125 m.Besides the structure discussion and an ocean engineering example are also presented in this paper.