Study On High Density Digital Seismic Acquisition Technology In Jurong Area Of Lower Yangtze

Digital seismic exploration technology using high density acquisition,broadband access is the effective way to improve the resolution,fidelity and accuracy of seismic imaging,is also the development direction of the seismic exploration.China carried out some exploration and high precision digital collection,digital seismic tests are conducted in Sichuan,Xinjiang,Shandong.Good results have been achieved.The study based on the Yangtze Jurong seismic acquisition project,focuses on the research of the ultra shallow seismic acquisition method and high density digital image acquisition technology,two-dimensional high density digital pilot test was carried out in the first,the ultra trail from the observation system on the degradation process,choose the optimal distance and receiver the line element.and the offset,offset,the coverage of a detailed analysis and research,the initial formation of the acquisition and processing method of the area,the digital geophone and analog geophone were compared and analyzed,the digital detector can effectively improve the resolution of the target zone,through the indoor combination after receiving the effect is better than analog geophone.Based on the two-dimensional pilot test,for the very shallow layer of the establishment and analysis of three-dimensional physical model of the earth,the verification and optimization of the observation system,the effective implementation of the complex surface observation system and focuses on the obstacle is studied,combined with construction of vibrator and explosive source are summarized and analyzed in this paper.Eventually formed a very shallow layer seismic exploration technology in Jurong area of the whole process.This research project from 2010 Jurong pilot test of 2D to 2011 seismic 3D seismic acquisition,which lasted 2 years,and analyzing the collected data was highly praised by the company,has made a breakthrough in the exploration.