罗家地区高密度三维地震勘探实例
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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.
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.
引文
[1]李庆忠.走向精确勘探的道路——高分辨率地震勘探系统工程剖析.北京:石油工业出版社,1994
[2]谢里夫,吉尔达特著;初英等译.勘探地震学(第二版),北京:石油工业出版社,1999
[3]俞寿朋.高分辨率地震勘探.北京:石油工业出版社,1993
[4]杨云岭,韩文功.胜利油区高分辨率地震勘探技术与实践.北京:石油工业出版社,2002
[5]李庆忠,地震高分辨率勘探中的误区与对策,石油地球物理勘探,1997,32(6):751~783Li Qing-zhong.Some mistaken concepts in high reso-lution seismic exploration and the corresponding coun-termeasures,OGP,1997,32(6):751~783
[6]蔡希玲,刘学伟,勾丽敏.地震采样波场的空间连续性分析方法.石油地球物理勘探,2007,42(4):370~379Cai Xi-ling,Liu Xue-wei,Gou Li-min.Analytic approa-ches for spatial continuity of seismic sampled wave-field.OGP,2007,42(4):370~379
[2]谢里夫,吉尔达特著;初英等译.勘探地震学(第二版),北京:石油工业出版社,1999
[3]俞寿朋.高分辨率地震勘探.北京:石油工业出版社,1993
[4]杨云岭,韩文功.胜利油区高分辨率地震勘探技术与实践.北京:石油工业出版社,2002
[5]李庆忠,地震高分辨率勘探中的误区与对策,石油地球物理勘探,1997,32(6):751~783Li Qing-zhong.Some mistaken concepts in high reso-lution seismic exploration and the corresponding coun-termeasures,OGP,1997,32(6):751~783
[6]蔡希玲,刘学伟,勾丽敏.地震采样波场的空间连续性分析方法.石油地球物理勘探,2007,42(4):370~379Cai Xi-ling,Liu Xue-wei,Gou Li-min.Analytic approa-ches for spatial continuity of seismic sampled wave-field.OGP,2007,42(4):370~379
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