柴达木盆地尖顶山地区低频可控震源“两宽一高”地震资料处理关键技术应用研究  

The key technique application research on low frequency vibrator "two-wide and one-high" seismic data processing in Jiandingshan area of Qaidam Basin

作　　者：周锦钟 张金海 牛全兵 张惠瑜 王海峰 朱波 李丽 尹思 王娜 ZHOU Jin-Zhong;ZHANG Jin-Hai;NIU Quan-Bing;ZHANG Hui-Yu;WANG Hai-Feng;ZHU Bo;LI Li;YIN Si;WANG Na(Qinghai Oilfield Company Exploration and Development Research Institute of PetroChina,Dunhuang 736202,China;Production Logging Center of China Petroleum Logging Co.Ltd.,Xi'an 710200,China)

机构地区：[1]中国石油青海油田分公司勘探开发研究院,甘肃敦煌736202 [2]中国石油测井有限公司生产测井中心,陕西西安710200

出　　处：《物探与化探》2020年第2期313-320,共8页Geophysical and Geochemical Exploration

基　　金：中国石油青海油田分公司“柴达木盆地2017年天然气勘探地震资料处理解释及目标选择”子课题“尖顶山地区地震资料精细处理解释及储层预测”。

摘　　要：为精细研究尖北构造及断裂体系特征,探索侏罗系地层空间展布规律,提高断点、断面成像精度,落实小断层及隐伏断层的分布,为基岩岩性圈闭提供有力支撑,在柴达木盆地尖顶山地区采用低频可控震源"两宽一高"(宽方位、宽频带、高密度)的高精度地震勘探技术,此技术能够较完整地记录波场信息,低频信息丰富、空间假频少,有利于薄互层油气藏的宽频带处理及方位各向异性的研究。从该区的波场特征、信噪比及频率等方面出发,利用低频可控震源"两宽一高"宽频带、宽方位的高分辨率保幅处理技术,对小断层及基岩成像进行了精细的刻画,体现了"两宽一高"在宽频带和宽方位资料处理中具有的独特优势。In order to finely implement the characteristics of the Jianbei structure and fault system,explore the spatial distribution law of Jurassic strata,improve the imaging accuracy of breakpoints and sections,and implement the distribution of small faults and concealed faults so as to provide strong support for bedrock lithologic traps,the authors used high-precision seismic exploration technology with low-frequency vibrator "two widths and one high"(wide azimuth,wide band,high density) in this area.This technology can record wave field information more completely,with low frequency information and less space and false noise.It is conducive to the study of broadband processing and azimuthal anisotropy of thin interbedded reservoirs.In this paper,from the aspects of wave field characteristics,signal-to-noise ratio and frequency of the region,the authors used the low-frequency vibrator "two widths and one high" wide-band,wide-azimuth high-resolution amplitude-preserving processing technology to image small faults and bedrocks.The fine characterization shows that the "two widths and one height" method has unique advantages in wideband and wide-range data processing.

关 键 词：两宽一高 假频 波场 各向异性 信噪比 

分 类 号：P631.4[天文地球—地质矿产勘探]