双传感器拖缆采集技术在珠江口盆地中生界地层中的应用
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摘要
常规的海上地震数据采集方法到目前为止一直采用单源(即多枪组合)和单缆接收地震波的二维或多缆接收地震波的三维进行地震数据采集。双传感器是在传统的传感器外增加了速度传感器,它们集成于固体拖缆中,两种传感器彼此互补,具有压制陷波、提供较大的带宽,增强穿透性的海上地震双传感器拖缆技术设备。利用这种拖缆技术对珠江口盆地北部潮汕地区中生界地层采集的地震数据与常规采集数据处理后的成果比较,证明这种新采集方法对地层倾角较陡、中深层反射弱、成像差、信噪比低等都有很大改善,为在潮汕地区中生界地层中开展地震资料采集工作提供了新的采集技术和方法。
The conventional methods of marine seismic data acquisition so far have been the single source(multi-gun combination) and a single cable received two-dimensional seismic or multi-cable received three-dimensional seismic wave of seismic data acquisition.For conventional sensors,the speed sensors were installed on the dual sensors,they are integrated in the solid streamer,and the two sensors were complemented each other.The dual-sensor streamer marine seismic patented technology and equipment could suppress trap waves and broaden the frequency band,increase penetration for seismic data acquisition and processing.In Mesozoic Group of the Pearl-river Mouth Basin in the north Chaoshan Area,the collected data are compared with conventional data,it shows that this new method can improve the weak reflection,poor imaging and low signal to noise ratio.It provides a new acquisition technique and method for seismic data collection to the Mesozoic in Chaoshan Area.
The conventional methods of marine seismic data acquisition so far have been the single source(multi-gun combination) and a single cable received two-dimensional seismic or multi-cable received three-dimensional seismic wave of seismic data acquisition.For conventional sensors,the speed sensors were installed on the dual sensors,they are integrated in the solid streamer,and the two sensors were complemented each other.The dual-sensor streamer marine seismic patented technology and equipment could suppress trap waves and broaden the frequency band,increase penetration for seismic data acquisition and processing.In Mesozoic Group of the Pearl-river Mouth Basin in the north Chaoshan Area,the collected data are compared with conventional data,it shows that this new method can improve the weak reflection,poor imaging and low signal to noise ratio.It provides a new acquisition technique and method for seismic data collection to the Mesozoic in Chaoshan Area.
引文
[1]郝沪军,施和生,张向涛,等.潮汕坳陷中生界及其石油地质条件——基于LF35-1-1探索井钻探结果的讨论[J].中国海上油气,2009,21(3):151～155.
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[3]何汉漪.海上高分辨率地震技术及其应用[M].北京:地质出版社,2001.80～82.
[2]William H D.Air gun array specs:A tutorial[J].The Leading Edge of Exploration,1990,9(1):24～33.
[3]何汉漪.海上高分辨率地震技术及其应用[M].北京:地质出版社,2001.80～82.
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