海洋空气枪点震源阵列优化组合设计与应用
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
应用气枪震源子波模拟软件,通过不同气枪阵列组合的震源子波模拟试算进行海上宽方位地震数据采集的点震源阵列设计。阐述了阵列组合对于点震源阵列优化设计的意义;分析了阵列间距和沉放深度对子波模拟结果的影响;针对渤海某工区海底复杂断裂带中、深层目的层成像问题,并结合BH518震源船的实际生产条件,设计了四子阵非对称分布点震源阵列并选出其最优阵列参数,使得其激发的远场子波在子波性能、频谱质量和能谱分布上达到各方面兼顾。将此点震源阵列应用于研究工区的地震采集试验,所获资料的最终成像效果得到显著改善,表明所设计的四子阵非对称分布点震源阵列是适用于实际宽方位地震资料采集作业的较优点震源阵列。
We apply air-gun source wavelet simulation software to test the point-source array design pressure signal of offshore wide-azimuth seismic data acquisition with different air-gun array combinations.The meaning of array combinations on the point-source array optimization design is characterized.Moreover,the impact of array spacing and array depth on wavelet simulation result is analyzed.Aiming at the target imaging problem of the middle-deep layers in ocean-bottom complex faulted zone at Bohai Area,combining with the actual operation conditions of BH518 geophysical vessel,four sub-arrays asymmetric distribution point-source array is proposed to adapt to offshore seismic exploration.The far-field wavelet stimulated by the point-source array meets the requirements in the wavelet performance,spectrum quality and spectral energy distribution.The results show that four sub-arrays asymmetric distribution point-source array is suitable for the offshore wide-azimuth seismic data acquisition.
引文
[1]Ziolkowski A.A method for calculating the output pressure waveform from an air-gun[J].Geophysical Journal Royal Astronomical Society,1970,21(2):137-161
    [2]陈浩林,宁书年,熊金良,等.气枪阵列子波数值模拟[J].石油地球物理勘探,2003,38(4):363-368Chen H L,Ning S N,Xiong J L,et al.Numerical simulation of air-gun array wavelet[J].Oil Geophysical Prospecting,2003,38(4):363-368
    [3]杨怀春,高生军.海洋地震勘探中空气枪震源激发特性研究[J].石油物探,2004,43(4):323-330Yang H C,Gao S J.The signatures of seismic wavelet excited by air guns in marine seismic survey[J].Geophysical Prospecting for Petroleum,2004,43(4):323-330
    [4]李绪宣,温书亮,顾汉明,等.海上气枪阵列震源子波数值模拟研究[J].中国海上油气,2009,21(4):216-220Li X X,Wen S L,Gu H M,et al.A numerical simulation of wavelets from offshore air-gun array seismic source[J].China Offshore Oil and Gas,2009,21(4):216-220
    [5]杨凯,陈华,顾汉明.深水立体延迟激发气枪震源的设计与应用[J].工程地球物理学报,2011,8(6):641-647Yang K,Chen H,Gu H M.The design and application of tridimensional delayed excitation air-gun arrays to deep water seismic exploration[J].Chinese Journal of Engineering Geophysics,2011,8(6):641-647
    [6]王建花,李绪宣,顾汉明.海上多子阵立体组合气枪震源优化设计[J].地质科技情报,2012,31(2):133-138Wang J H,Li X X,Gu H M.The optimal design of3Dair-gun arrays combination in marine seismic exploration[J].Geological Science and Technology Information,2012,31(2):133-138
    [7]Hopperstad J F,Synnevaag J,Vermeer P.An azimuth-invariant source array[J].Expanded Abstracts of 71st Annual Internat SEG Mtg,2001,52-55
    [8]Moldoveanu N,Uribe J.Point-source/point-receiver land acquisition:Torrecillas-Mexico experiment[J].Expanded Abstracts of 74th Annual Internat SEG Mtg,2004,21-24
    [9]Quigley J.An integrated 3Dacquisition and processing technique using point sources and point receivers[J].Expanded Abstracts of 74th Annual Internat SEG Mtg,2004,17-21
    [10]Saunders M,Howe D,Kommedal J,et al.An efficient compact omni-directional air gun array for the Valhall 4D/4C seismic survey[J].Expanded Abstracts of 66th EAGE Annual Conference,2004,1-5
    [11]Niang C,Ni Y,Svay J.Monitoring of air-gun source signature directivity[J].Expanded Abstracts of83rd Annual Internat SEG Mtg,2013,41-45
    [12]陈浩林,全海燕,刘军,等.基于近场测量的气枪阵列模拟远场子波[J].石油地球物理勘探,2005,40(6):703-707Chen H L,Quan H Y,Liu J,et al.Simulation of farfield wavelet based on near-field measuring gun-array[J].Oil Geophysical Prospecting,2005,40(6):703-707
    [13]陈浩林,全海燕,於国平,等.气枪震源理论与技术综述(下)[J].物探装备,2008,18(5):300-308,312Chen H L,Quan H Y,Yu G P,et al.Summary of airgun source theory and technology(2)[J].Equipment for Geophysical Prospecting,2008,18(5):300-308,312
    [14]Hopperstad J F,Laws R.Where is the center of a multi-depth marine source array[J].Expanded Abstracts of 78th Annual Internat SEG Mtg,2008,40-44
    [15]李绪宣,王建花,杨凯,等.海上深水区气枪震源阵列优化组合研究与应用[J].中国海上油气,2012,24(3):1-6Li X X,Wang J H,Yang K,et al.A study on optimization of seismic air-gun array source and its application in offshore deep water[J].China Offshore Oil and Gas,2012,24(3):1-6

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心