深拖平缆采集资料中鬼波衰减方法探讨

doi:10.11720/wtyht.2019.1045

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Abstract

Ghost attenuation,the key step of broadband processing,is a very important step in data-processing of deep towing flat streamer.Therefore,this paper analyzes the features of deep towing flat cable data,derives time distance curve equation of ghost and,on such a basis,introduces the basic principle of the linear least square inversion in Radon domain method for ghost attenuation.First,no ghost data is obtained by the least square method in Radon domain,then the primary wave operator is used in inverse transform,so as to realize the attenuation of ghost.The processing effect of model and actual data shows that,after ghost attenuation,the frequency notches of deep towing flat cable data can be compensated,and the effective frequency bandwidth can be broadened,thus achieving the effect of broadband processing.

Key words： broadband deep towing flat streamer ghost attenuation time distance curve equation Radon domain the least square

Received: 29 January 2018 Published: 20 February 2019

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	Articles by authors
	Hui-Long LI
	Zheng WANG
	Xin SONG
	Chao WU
	De-Zhi MA
	Meng-Chang SHI
	Liang ZHAO

Cite this article:

Hui-Long LI,Zheng WANG,Xin SONG, et al. The application of broadband processing technology to deep towing flat streamer data[J]. Geophysical and Geochemical Exploration, 2019, 43(1): 176-182.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2019.1045 OR https://www.wutanyuhuatan.com/EN/Y2019/V43/I1/176

The diagram of primary and ghost wave
a—primary reflection;b—the source ghost wave;c—the cable ghost wave;d—the source and cable comprehensive ghost wave

Forward modeling shot gather

Forward modeling shot gather frequency spectrum

Principal chart of time distance curve equation of ghost

Streamer ghost attenuation results
a—original shot gather;b—shot gather after ghost attenuation

Streamer ghost attenuation spectrum results
a—original spectrum;b—spectrum after ghost attenuation

The ghost attenuation results on field shot gather
a—before ghost attenuation;b—after ghost attenuation;c—the difference of ghost attenuation before and after

Shot frequency spectrum before(red) and after(green) ghost attenuation

The ghost attenuation results on migration section
a—before ghost attenuation;b—after ghost attenuation

Migration section frequency spectrum before(red) and after(green)
a—rectangle 1;b—rectangle 2

[1]	余本善, 孙乃达 . 海上宽频地震采集技术新进展[J].石油科技论坛, 2015(1):41-45.
[1]	Yu B S, Sun N D . Latest development of marine braodband seismic acquisition technology[J].Oil Forum, 2015(1):41-45.
[2]	吴志强 . 海洋宽频带地震勘探技术新进展[J]. 石油地球物理勘探, 2014,49(3):421-430.
[2]	Wu Z Q . New advances in marine broadband seismic exploration[J]. Oil Geophysical Prospecting, 2014,49(3):421-430.
[3]	Barr F J, Sanders J I. Attenuation of water column reverberations using pressure and velocity detector in a water-bottom cable [C]//59 ^th Annual International Meeting,SEG Expanded Abstracts , 1989: 460-467.
[4]	龚旭东, 周滨, 高梦晗 , 等. 检波点水深误差对OBC双检资料合并处理的影响与对策[J]. 石油物探, 2014,53(3):324-329.
[4]	Gong X D, Zhou B, Gao M H , et al. The influence and strategy of water depth error at receivers on dual-sensor summing processing[J]. Geophysical Prospecting for Petroleum, 2014,53(3):324-329.
[5]	徐强 . 海底电缆资料双检合并处理技术研究与应用[J]. 工程地球物理学报, 2017,14(2):130-134.
[5]	Xu Q . The Research and application of dual detection and processing technology of sea-bottom cable data[J]. Chinese Journal of Engineering Geophysics, 2017,14(2):130-134.
[6]	Robertsson, Moore I, Vassallo M , et al. On the use of multicomponent streamer recordings for reconstruction of pressure wavefields in the crossline direction[J]. Geophysics, 2008,73:A45-A49.
[7]	Sonneland L, Berg L E, Eidsvig P, et al. 2D deghosting using vertical receiver array [C]//56^th Annual International Meeting,SEG Expanded Abstracts , 1986: 516-519.
[8]	刘春成, 刘志斌, 顾汉明 . 利用上/下缆合并算子确定海上上/下缆采集的最优沉放深度组合[J]. 石油物探, 2013,52(5):623-629.
[8]	Liu C C, Liu Z B, Gu H M . The determination of optimal sinking depths of over/under streamers in offshore survey by merge operator[J]. Geophysical Prospecting for Petroleum, 2013,52(6):623-629.
[9]	李洪建, 韩立国, 巩向博 .频率域起伏双缆数据合并策略[J].石油物探, 2015,54(6):674-680.
[9]	Li H J, Han L G, Gong X B . Merge strategy for fluctuate double streamers in frequency domain[J]. Geophysical Prospecting for Petroleum, 2015,54(6):674-680.
[10]	Soubaras R. Deghosting by joint deconvolution of a migration and mirror migration [C]//80 ^th Annual International Meeting,SEG Expanded Abstracts , 2010: 3406-3410.
[11]	许自强, 方中于, 顾汉明 , 等. 海上变深度缆数据最优化压制鬼波方法及其应用[J]. 石油物探, 2015,54(4):404-413.
[11]	Xu Z Q, Fang Z Y, Gu H M , et al. The application of optimal deghosting algorithm on marine variable-depth streamer data[J]. Geophysical Prospecting for Petroleum, 2015,54(4):404-413.
[12]	Song J G, Gong Y L, Li S . High-resolution frequency-domain Radon transform and variable-depth streamer data deghosting[J]. Applied Geophysics, 2015,12(4):564-572.
[13]	王冲, 顾汉明, 许自强 , 等. 最小二乘反演迭代算法在压制海上变深度缆采集数据虚反射中的应用[J]. 地球物理学报, 2016,59(5):1790-1803.
[13]	Wang C, Gu H M, Xu Z Q , et al. The application of least-squares inversion iteration algorithm to deghost for marine variable-depth streamer data[J]. Chinese J. Geophys. (in Chinese), 2016,59(5):1790-1803.
[14]	Weglein A B, Shaw S A, Matson K H, et al. New approaches to deghosting towed-streamer and ocean-bottom pressure measurements [C]//72 ^nd Annual International Meeting,SEG Expanded Abstracts , 2002: 1016-1019.
[15]	Mayhan J D, Weglein A B . First application of Greens theorem-derived source and receiver deghosting on deep-water Gulf of Mexico synthetic (SEAM) and field data[J].Geophysics, 2013, 78(2):WA77-WA89.
[16]	杨金龙 , Weglein Arthur B. 基于格林理论的鬼波压制方法及其应用[J]. 石油物探, 2017,56(4):507-515.
[16]	Yang J L, Weglein Arthur B . A deghosting method based on Greens theorem and its application[J]. Geophysical Prospecting for Petroleum, 2017,56(4):507-515.
[17]	张威, 韩立国, 李洪建 . 基于起伏海水表面的拖缆鬼波压制方法[J]. 石油物探, 2017,56(4):500-506.
[17]	Zhang W, Han L G, Li H J . Deghosting method based on avariable sea surface for conventional streamer seismic data[J]. Geophysical Prospecting for Petroleum, 2017,56(4):500-506.
[18]	贾连凯 . 南海深水区多次波压制技术研究[D].北京:中国科学院研究生院( 海洋研究所),2014.
[18]	Jia L K . Study of multiple elimination techniques in the deepwaterarea of south China Sea[D].Beijing:Chinese Academy of Sciences( Institute of Oceanology),2014.