摘要
随着近年地震勘探装备技术的提高,以高空间采样率为显著特征的高密度地震勘探技术取得了重大进展。本文介绍的胜利油田罗家地区陆上高密度三维地震采集试验,首次进行了超万道、全数字、单点、三分量高密度三维地震采集。在区域噪声特征分析的基础上,采用束状正交集中式对称观测系统,提高了采集数据的连续性和均匀性;施工前采用多种手段进行详细的表层结构调查,建立了精细表层结构模型;采集作业中,在改进检波器耦合条件的同时,强化了试验资料和施工记录的现场监控处理分析,获得了高品质的高密度多波资料,探索并形成了高效的高密度超万道地震数据采集组织管理模式。
With the advance in both field equipment and seismic technology,significant progress of HD(high density) seismic acquisition has been made in recent years.In 2008,Shengli Oil Field of Sinopec has conducted a land HD seismic acquisition in Luojia area.This was the first HD acquisition with over 10,000 live channels of 3C digital sensors in China.We adopted single-receiving technique that means that a single 3C sensor was planted at each receiver point.Based on noise characteristics analysis in the working area,a centralized swath orthogonal symmetric geometry was used.This geometry improves continuity and uniformity of seismic events.Many methods were used to investigate near surface structures.Some minor near surface structure models were built.In field acquisition,receiver coupling was improved and data quality control was monitored by on-site processing.So high quality 3C data were acquired.At the same time,an efficient field operation procedure for large-live-channel-count survey was developed.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2011年第2期182-186,156,共5页
Oil Geophysical Prospecting
关键词
高密度三维地震
数据采集
数字检波器
单点接收
表层调查
high density 3D seismic,seismic data acquisition,digital sensor,single-receiving,near surface investigation
