关键词: 近地表, 调查方法, 岩性探测, 分层技术, 胜利油区

Abstract: As the accuracy of seismic data acquisition is getting higher for oilfield exploration and development, the accuracy of near-surface structure is particularly important. To improve accuracy of seismic data acquisition, first is to get accurate surface data, looking for the best lithology shooting. This will improve the quality of seismic data considerably. In the course of study, test, analysis and summary are conducted on many survey methods for surface structure relying on the Shinan-Haojia seismic exploration project, developing the layered technology of speed, detection technology of lithology and layered technology of geotechnical physical parameters, etc. Test shows that selecting one or more appropriate methods for near-surface survey and making full use of their advantages could get the depth, speed and lithologic data for low velocity layer, based on the use of different methods and joint explanation, providing evidence for selecting shooting and receiving parameters and offering accurate data for static correction of seismic data.