Q-Marine技术及其在海洋勘探中的应用
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摘要
常规海上三维地震勘探存在很多的问题,如震源激发不同步,地震记录噪声大,电缆横向间距难以控制等问题。WestemGeco公司的Q-Marine技术可以较好的解决问题。采用震源标定技术,提高震源的一致性;采用单一检波器记录提高记录数据的信噪比与分辨率;拖缆上采用综合全声学定位网络提高定位精度;采用Q-Fin技术实现电缆深度和水平调整。通过对Q-Marine技术的简单介绍,并以勘探实例为例,对Q-Marine技术进行分析。
Many problems might occur with conventional 3D seismic survey,such as synchronization error of air gun firing,strong noise in hydrophone during acquisition,and difficult maintenance of constant space between streamers in bed sea state.The Q-Marine technology developed by WesternGeco can solve these problems effectively.Using seismic source calibration technology,the consistency of source signal between different shootings can be improved.Using single hydrophone to record raw seismic signal separately in acquisition(In traditional streamer,the seismic signal of a channel is the average value of a group of hydrophones),and then by proper processing,both signal/noise ratio and resolution of the final seismic data can been improved.In Q-Marine technology,the streamers are equipped with full-scale integrated acoustic positioning networks.This can greatly improve the accuracy of streamer positioning.The Q-Fin technology in Q-Marine can effectively adjust the lateral distance between streamers.In this paper,an over-all introduction on Q-Marine acquisition technology has been discussed,and actual seismic acquisition examples with Q-Marine technology have been analyzed.
Many problems might occur with conventional 3D seismic survey,such as synchronization error of air gun firing,strong noise in hydrophone during acquisition,and difficult maintenance of constant space between streamers in bed sea state.The Q-Marine technology developed by WesternGeco can solve these problems effectively.Using seismic source calibration technology,the consistency of source signal between different shootings can be improved.Using single hydrophone to record raw seismic signal separately in acquisition(In traditional streamer,the seismic signal of a channel is the average value of a group of hydrophones),and then by proper processing,both signal/noise ratio and resolution of the final seismic data can been improved.In Q-Marine technology,the streamers are equipped with full-scale integrated acoustic positioning networks.This can greatly improve the accuracy of streamer positioning.The Q-Fin technology in Q-Marine can effectively adjust the lateral distance between streamers.In this paper,an over-all introduction on Q-Marine acquisition technology has been discussed,and actual seismic acquisition examples with Q-Marine technology have been analyzed.
引文
[1]Ed Kragh,Robert Laws,Ali(O|¨)zbek.Source signature estimationattenuation of the sea-bottom reflection error from near-field measurements[J].First Break,2000,18(6):260-264.
[2]Brink M,Spackman J.Solid streamers and single hydrophones[C].2004 SEG Annual Meeting,Denver,Colorado.
[3]何文.浅析海上地震勘探Q-Marine新技术[J].中国化工贸易,2012(5):62-62,141.
[2]Brink M,Spackman J.Solid streamers and single hydrophones[C].2004 SEG Annual Meeting,Denver,Colorado.
[3]何文.浅析海上地震勘探Q-Marine新技术[J].中国化工贸易,2012(5):62-62,141.
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